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Modshack 05-16-2009 02:41 PM

DIY: Oil Cooler (scratch built install, lottsa pics).....>.
 
OK...A lot of you have been waiting for this. Given the controversy over oil temps you can either wring your hands, point fingers, assign blame and hope Nissan will do something, or just knuckle down, spend a few bucks and take care of the problem yourself. Your car will like you for it. Actually my car does not seem to run exceptionally hot. Some frisky running in the hills of western NC last weekend rarely saw temps above 245. Regardless, I'm a fan of cool, be it intakes, engine compartment temps or whatever. A cooler was in the plan. I've done several before on Audi TT's so this was not new. I will have to say, the 370 layout made it much easier than I'm used to. I decided to go with a 180 degree thermostatic plate (Mocal) and a Cooler core that I've used before (Tru-cool). The choice of Aeroquipt socketless hose may be controversial, but I suggest you do a google search before rendering judgement on those. Lets get started:

Why? A little research indicates:
"TORQUE CUT CONTROL (AT HIGH ENGINE OIL TEMPERATURE)
The ECM receives engine oil temperature signals from engine oil temperature sensor.
To avoid VVEL performance degradation, the ECM performs the engine torque cut control at high engine oil temperatures.
If engine oil temperature is too high, engine oil viscosity will change. As a result, engine oil pressure is
decreased. This control affects the VVEL operating angle by operating the VVEL actuator sub assembly.
If this control is operated, engine performance will decrease, then maximum engine speed is reduced a bit (Various levels of Limp Mode depending on temp).
.
The VVEL is a fairly complex system, with a relatively high amount of reciprocating mass and multiple linkages. The lubrication demands are very high to ensure Nissan's life expectancy goals are met. The shearing loads and high pressures exerted on the oil dictate a proper viscosity be maintained in order to resist lubrication failure due to these loads. Because an oil's ability to resist shearing weakens as it gets hot and thins out; a phenomenon plotted as a function of viscosity and shear stability known as the Stribeck curve, it is essential that the oil maintain it's specified viscosity at the appropriate operating temperature. This is why Nissan has engineered a fail-safe which limits power until the oil cools back to its specified operating temperature, because at that temperature it should be at the proper viscosity to withstand the high loads of the VVEL system.

http://images50.fotki.com/v1514/phot...andlife-vi.jpg
(Note: The engine life graph is just a representation pulled from an article discussing 300,000 mile Porsche 911's and the effect of oil temps on longevity. Take it for what it's worth)

Have all your parts handy and do the pre-assembly (Parts list at my link below): Total cost on this system, including a Thermostatic plate is $270 shipped.

10 AER-FBN1000 -10 Aeroquip Socketless Hose, Black $43.70
2 AER-FCM2039 Aeroquip 90 Degree Male Elbow, Aluminum - Aeroquip 90 Degree Male Elbow, Alum. -10 to 1/2" Adapter $22.48
2 AER-FCM1534 Aeroquip Socketless 90 Degree Elbow Fitting - -10 Aeroquip Socketless 90 Degree Elbow Fitting $33.36
2 AER-FCM1514 Aeroquip Straight Socketless Fitting - -10 Aeroquip Socketless Straight Fitting $14.50
1 MOC-2BM810A Mocal 1/2" x -10 ORB fitting $15.99
1 MOC-SP1FT Mocal Sandwich Plate- 20mm Thread $86.95
1 TRU-L7B TRU-Cool 24 Row Racing Oil Cooler $44.95 (11" x 5.75" x 1.5")

Shipping Rate: $8.85
Subtotal: $270.78

Alternative Stainless and socketed hose assembly, use these parts in lieu of the socketless hose and fittings above. It is recommended you go with this set-up if you plan to do any tracking of your car where temps may be elevated, and engine movement on the mounts may be exaggerated... : Cost difference is approx + $30

10' section of Aeroquipt Stainless AN10 hose AER-FBA1000-10 $75
(2) Mocal 90 degree fittings MOC-F90-10 @ 15.15 each $30.30
(2) Mocal straight AN10 connectors MOC-FS-10 @ $7.49 $14.98

More detail on page 13, post 189 on the stainless lines

From Racer Parts Wholesale
http://www.racerpartswholesale.com

Notes on installing NPT fittings into the cooler: http://www.mechanicsupport.com/articleFittingTight.html
A high temp sealant is probably the best sealer here, such as Loctite #567
http://images49.fotki.com/v1511/phot...MG_1723-vi.jpg

http://images43.fotki.com/v1505/phot...MG_1676-vi.jpg

Get the car in the air and pull off the nose and lower cover. This is an easy process documented elsewhere ( I have a lift which does make it easier!)
http://images47.fotki.com/v1485/phot...MG_1680-vi.jpg

Oh yeah....Ignore my accident damage (soon to be fixed) let's just say the impact bar did its job when I got shoved into that Jeep!
http://images47.fotki.com/v1401/phot...MG_1682-vi.jpg

Next up, mount the 20mm thread Mocal sandwich plate. Just screw the adapter onto the existing Oil filter threaded nipple:
http://images50.fotki.com/v1514/phot...MG_1684-vi.jpg

and decide where you want to route the lines. AN10 lines are pretty big and will need good radius clearances
http://images47.fotki.com/v1497/phot...MG_1683-vi.jpg

Cut the Hose holes in the rear:
http://images47.fotki.com/v1498/phot...MG_1687-vi.jpg

and the front. These panels are held in place with the plastic push pins or slide in tabs and remove easily.
http://images27.fotki.com/v1022/phot...MG_1692-vi.jpg

http://images47.fotki.com/v1401/phot...MG_1685-vi.jpg

Mock up a bracket for the cooler:
http://images46.fotki.com/v1506/phot...MG_1688-vi.jpg
http://images47.fotki.com/v1497/phot...MG_1691-vi.jpg

Powdercoat it (what I did) or paint to make it stealthy. Mount it with stainless M6 bolts and Nylock hardware using existing holes on the lower composit radiator support.:
http://images49.fotki.com/v1504/phot...MG_1696-vi.jpg

Measure and lay-out hoses. You'll need to buy 10 feet:
http://images46.fotki.com/v1506/phot...MG_1700-vi.jpg

Install ends...The socketless Aeroquipt lines make this a piece of cake. They just push on and are good to 250 psi, kinda like a Chinese finger handcuff :-) You'll need a 49" and a 63" hose (actual hose length, not including fittings):
Click here and scroll to the bottom for hose assembly instructions: http://64.202.180.37/files/phosend.pdf

For information and pictures on the socketed style Stainless hose and fittings, see page 13, post 189

http://images50.fotki.com/v1514/phot...MG_1699-vi.jpg

While your at it, upgrade your filter. See this thread http://myg37.com/forums/engine-drive...otsa-pics.html
http://images49.fotki.com/v1500/phot...MG_1707-vi.jpg

Hook up fittings and route lines:
http://images43.fotki.com/v1505/phot...MG_1701-vi.jpg

http://images47.fotki.com/v1485/phot...MG_1702-vi.jpg

http://images49.fotki.com/v1511/phot...MG_1693-vi.jpg

http://images50.fotki.com/v1514/phot...MG_1713-vi.jpg

Check everything carefully and fix hoses in place to avoid chafing and t maintain your radius bends:
http://images43.fotki.com/v1505/phot...MG_1708-vi.jpg

http://images46.fotki.com/v1506/phot...MG_1706-vi.jpg

Nice clean install, Have a beer, admire your work. All done:

http://images50.fotki.com/v1514/phot...MG_1709-vi.jpg

http://images47.fotki.com/v1499/phot...MG_1710-vi.jpg

Cooler with new Fang Vents mounted:
http://images50.fotki.com/v1514/phot...MG_1896-vi.jpg

Upon start up there were Zero leaks. Took the temps up to about 185 on the lift with no issues at all.. I have not road tested yet as I need to get the nose back on. I'm looking for about a 20 degree reduction in temps and will report back once road tested.

Road Test Update:

went out in the country today and thrashed the car about for 45 minutes or so. Ambient temps 75 degrees, average coolant temps 184, Average oil temps 190. I had to work hard to get it to 200 degrees and it would not get hotter than that. I'm seeing a 20-25 degree average reduction from what I would expect to see without the cooler under similar drive conditions...

5/19: Another drive today to run some errands. 56 degrees ambient, Oil stayed between 190-195. Very close to paralleling the water temps..

5/20: Ambient temps 80 degress. Pushed it a bit but only saw temps in the 195-210 range.

6/25: Ambient temps are a little hotter these days (85-90) and the oil temps seem to be holding in the same range. 400 miles since install. Day to day around town 195-200. Hotrodding around out on the country roads 200-215

9/8: Several months and 2000 miles since the install (3500 miles total)l. Daily temps continue to average 190-195. Pushing the car, maybe 210. I have yet to see temps over 225 on Pennsoil dino oil. Full synthetic to be added at the next change at 4K.

Some notes: This is not a difficult install, even when rolling your own with a Bag 'O parts. If you are at all squeamish about building a bracket, or putting hoses together, then by all means buy a pre-fabbed kit from Stillen, GTM or DDM. You can save a few bucks going the route I went, upgrade some components and have the satisfaction of a solid DIY. A thermostatic plate should be considered a necessity for anyone living in the Northern climes or anyone considering a larger cooler. None of the pre-packaged cooler kits for more money (except the GTM) seem to include this. Buyer beware. The only difference with this install is you have to fab up a bracket and assemble your own hoses. Both these tasks are very easy. Total cost was $270 including shipping for the component parts. Time involved was about 4 hours taking my time and a few beer breaks. You'll now need just over 6 quarts for a complete fill which, in itself, will aid in cooling due to the new +1 quart capacity. Any questions, feel free to ask, and go to my photo album here Oil Cooler fabrication and install album | Ttschwing | Fotki.com for more info, parts list, sources and pics.

If you found this helpful, shoot me some REP points too!....Stay cool....:tup:


WINTER UPDATE:
Since this install the weather has gotten cooler. Due to the way the Mocal Thermostatic plate works, the cooler is always in the system and receives flow no matter what the temp. It does not magically open at 180 degrees for a variety of reasons. See the Over-Cooling discussion here: http://www.the370z.com/engine-drivet...solutions.html

From Mocal:

Quote:

Mocal oil thermostats are designed to regulate oil flow
through cooling devices until optimal (minimum)
temperatures are reached. Cold oil enters the
thermostat and is bypassed through the center of the
unit returning to engine (figure 1). During warm-up
the thermostat never closes off oil flow to the cooler,
rather, it offers a less restrictive path for the oil to flow*
allowing the cooler to acclimate to system
temperature. As oil warms to 180 degrees (200 in high
temp versions) the operating "waxstat" closes the
bypass permitting full flow to cooler (figure 2).
*percentage of oil bypass can vary up to the point
where the bypass is closed and full flow to the cooler
is achieved.
Because of this, you may find, with a normally sized cooler, an inability to get the oil temps up to 180 degrees. There are a few solutions to this, one of which is to make an easily removable cover to reduce air flow through the cooler. I've found this works well and the temps can be brought up to 180 pretty easily even in 30 degree temps. The fab is easy and there are pics in my cooler photo album... http://public.fotki.com/ttschwing/37...oler-fabricat/

http://images53.fotki.com/v421/photo...MG_2211-vi.jpg

Adjust the size of the cover depending on the winter temps in your area..
http://images53.fotki.com/v420/photo...MG_2217-vi.jpg

wstar 05-16-2009 02:51 PM

Nice work. One thing - you mounted the cooler connections on the bottom instead of the top, which seems atypical compared to the other installs we've seen pics of here. There was some debate about this earlier, the upside of your arrangement being that you can drain the oil on changes easier, and the advantage of the 'connections up' method being that it retains oil to get things flowing faster on cold start. I'm guessing it's because of the thermo sandwich plate that that's no longer an issue in your setup, hence going for the 'better drain on oil changes' route?

Modshack 05-16-2009 03:04 PM

Quote:

Originally Posted by wstar (Post 73853)
going for the 'better drain on oil changes' route?


Thanks.....Yes, it's easy to crack the AN fittings at the cooler or the plate for a complete drain. All the other installs I've done have been with fittings down and no issues. The thermo plate does isolate the cooler and prevent drainback as it's routed through the filter (the Purolator has a more robust anti-drainback system as well). Another advantage to the cooler is the oil capacity is now up to just over 6 quarts which, in and of itself, helps with cooling..Without the ability to drain the cooler, you're left with 1+ quarts of dirty oil after a sump drain.

spearfish25 05-16-2009 03:20 PM

Do you have to do any special purge when you first start the engine after the install? Or does the system pressurize and fill itself without any need for other intervention?

Modshack 05-16-2009 03:24 PM

Quote:

Originally Posted by spearfish25 (Post 73865)
Do you have to do any special purge when you first start the engine after the install? Or does the system pressurize and fill itself without any need for other intervention?

Not really...The oil pressure and high Volume of the system take care of this almost instantaneously..The oil light didn't stay on any longer than it would for a normal filter change (IE out immediately). Not something I'd worry about..

chubbs 05-16-2009 05:21 PM

Excellent thread - Thank you.

Can you provide specs of the parts for people who want to copy you, prices and suppliers, or am I being cheeky?

Modshack 05-16-2009 05:31 PM

Quote:

Originally Posted by chubbs (Post 73887)
Excellent thread - Thank you.

Can you provide specs of the parts for people who want to copy you, prices and suppliers, or am I being cheeky?


Rather than take up more bandwidth (this has already been posted several times in other threads), just hit my link and go to the Cooler install album. All the info and prices are there..

travisjb 05-16-2009 05:42 PM

good stuff... off topic, but how do you like the bend pak scissor lift ? also, please tell us about the custom ramp you built to go with it. thanks

Modshack 05-16-2009 05:57 PM

Quote:

Originally Posted by travisjb (Post 73895)
good stuff... off topic, but how do you like the bend pak scissor lift ? also, please tell us about the custom ramp you built to go with it. thanks

Hi Travis! I've had the Bend-Pak for about 7 years now. It's an MD6-XP. Best $1500 I've ever spent. It's worked flawlessly, is very versatile, and allowed me to do things on my cars that would be impossible (or at least labor intensive) without it. I can pull a car in and have it in the air in less than a minute. Most of my cars have been low, so the ramps are necessary to get the clearances needed..
They're made with 2x stock. Simple to build. Here's a shot that sorta shows you how it all works:

http://images44.fotki.com/v1448/phot...SCF0185-vi.jpg

>135I 05-16-2009 06:12 PM

Do you think there will be any difference in longevity and quality between your setup and say a Stillen?

Modshack 05-16-2009 06:18 PM

Quote:

Originally Posted by >135I (Post 73907)
Do you think there will be any difference in longevity and quality between your setup and say a Stillen?

I would expect not. The Stillen uses a Setrab cooler which is a little pricier than a Tru-cool as is a Mocal, but all have good reputations, are sturdily built and have thousands of install successes. I had this exact Tru-cool in my TT for 6+ years with no issues and have had other friends that have done similar installs using this core. . Supposedly some Nascar teams use them, but that may be Ad hype. IMO the Tru-cool is very well built, easy to mount, and a true bargain at $45. An equivalent Setrab or Mocal is about 3 times that price (but imported from the UK for Mocal and Sweden for the Setrab which accounts for a large part of that I'm sure). They are very high quality units though. Another advantage to my system is the 180 degree thermostatic sandwich plate (which was actually the most expensive component). I would consider that a necessity in cooler climates. You could save $50 (taking the cost down to $220) on this set-up by going with a conventional (non-regulated) plate like the Stillen or DDM units use.

>135I 05-16-2009 06:27 PM

Could you elaborate a little more about thethermostatic sandwich plate please?

Modshack 05-16-2009 06:36 PM

Quote:

Originally Posted by >135I (Post 73913)
Could you elaborate a little more about thethermostatic sandwich plate please?

a 180 degree thermostatic plate does not open and start routing oil through the cooler until the oil temps get to 180 degrees.
On my old (non-regulated) system on my TT I found that oil temps took quite a while to get up to the desired 180 minimum on really cold days..
(But I'm in North Carolina so they were few and far between)

>135I 05-16-2009 07:32 PM

Thank you. I am thinking about doing this mod myself, but it wont be until after I move.

Gokart3 05-16-2009 08:39 PM

Nice work there Shack.... as always.

ZYUL8R 05-16-2009 08:43 PM

Very Nice! Thanks.

Modshack 05-16-2009 08:46 PM

Quote:

Originally Posted by Gokart3 (Post 73973)
Nice work there Shack.... as always.

Heh heh...Thanks. Funny seeing you here..:tup:

nizz23sd 05-16-2009 09:19 PM

:mad:nice upgrade! live here in southern cali and took the car on a canyon drive where i used to ride my bike until this lady crashed in to me and totalled my toy..it was about 85 degrees and the car didnt even hit 240..but im giving this car an oil cooler upgrade anyways..better safe than sorry right?i wish nissan do something bout this serious problem u guys are having.

spearfish25 05-16-2009 10:03 PM

Quote:

Originally Posted by Modshack (Post 73866)
Not really...The oil pressure and high Volume of the system take care of this almost instantaneously..The oil light didn't stay on any longer than it would for a normal filter change (IE out immediately). Not something I'd worry about..

Thanks for the DIY and for the reply. With this as a tool, I have some guidance should I need to install it myself (pending a potential Nissan fix).

+Rep

SoCal 370Z 05-17-2009 12:42 AM

Modshack,

If you have not reinstalled the front fascia can I please trouble you to get me rough dimensions of the engine radiator?

shumby 05-17-2009 03:41 AM

quick not. instead of tefflon tape. Locktite thread sealant works better and will not introduce and teflon pits into your oil system.

miguez 05-17-2009 05:30 AM

Great work Steve, thank you.

I see you ended up zip tying the hose connections to the AN fittings. In theory, that's not necessary, these hoses should stay on to 200+ psi without anything extra but pushing them in, correct? Was this precaution due to previous experience with a hose disconnecting?

Modshack 05-17-2009 08:04 AM

Quote:

Originally Posted by miguez (Post 74045)
Great work Steve, thank you.

I see you ended up zip tying the hose connections to the AN fittings. In theory, that's not necessary, these hoses should stay on to 200+ psi without anything extra but pushing them in, correct? Was this precaution due to previous experience with a hose disconnecting?

No real clamping is necessary and in fact could be detrimental to the joint integrity..I just snugged up the ties between the barbs as it seemed like a simple thing to do that made logical sense as it would control "Potential" hose expansion under heat, not that I believe this is a possibility from what I've read about socketless hose. Just a piece of mind thing is all. No need.

Modshack 05-17-2009 08:53 AM

Quote:

Originally Posted by SoCal 370Z (Post 74020)
Modshack,

If you have not reinstalled the front fascia can I please trouble you to get me rough dimensions of the engine radiator?

SoCal....

29" wide
19" high

Modshack 05-17-2009 10:21 AM

Road Test Update:

went out in the country today and thrashed the car about for 45 minutes or so. Ambient temps 75 degrees, average coolant temps 184, Average oil temps 190. I had to work hard to get it to 200 degrees and it would not get hotter than that. I'm seeing a 25-30 degree average reduction from what I would expect to see without the cooler under similar drive conditions...

Zeto 05-17-2009 11:44 AM

Do you plan to track the Z?

Modshack 05-17-2009 12:29 PM

Quote:

Originally Posted by Zeto (Post 74112)
Do you plan to track the Z?

No..It's just a street car..

miguez 05-18-2009 03:42 AM

Sounds like great temperatures Steve, thanks for the update. I am leaning more and more towards Tru-cool instead of Setrab, as I am starting to feel that buying Setrab is like buying a Porsche, a great product, but you pay a premium for the name.

LiquidZ 05-18-2009 07:14 AM

Question about your oil filter:

It looks like the PL14610 fits on our cars, but where do you go to check to see if it does in the first place?

Captain Tuttl 05-18-2009 07:43 AM

Can the stock oil pump handle the increased volume of the oil cooler, new piping, and slightly larger Pure One filter? Does the oil pressure decrease?

Modshack 05-18-2009 10:16 AM

Quote:

Originally Posted by LiquidZ (Post 74415)
Question about your oil filter:

It looks like the PL14610 fits on our cars, but where do you go to check to see if it does in the first place?

It's also a 20mm thread. Linked above the picture is this thread: Don't Use Nissan OEM Oil Filters (Long Post - Lotsa Pics) - MyG37

Read it...Very interesting!

Modshack 05-18-2009 10:20 AM

Quote:

Originally Posted by Captain Tuttl (Post 74419)
Can the stock oil pump handle the increased volume of the oil cooler, new piping, and slightly larger Pure One filter? Does the oil pressure decrease?


Increasing the oil volume has nothing to do with the pumps ability to pressurize the oiling system other than to keep temps down and therefore viscosity up. Cooler, higher viscosity oil will typically show a higher pressure were you to put a gauge on this.

shumby 05-18-2009 10:34 AM

^^^ right but you will see a drop in flow rate.

wstar 05-18-2009 10:38 AM

Interesting about using a longer filter. This inspired me to xref the K&N filters. Looks like, their model HP-1010 is the equivalent. The specs are identical to the HP-1008 some of us are already using except that it's about 7/8" longer.

wstar 05-18-2009 10:45 AM

Quote:

Originally Posted by shumby (Post 74475)
^^^ right but you will see a drop in flow rate.

I have no idea how our (or other) oil pumps are designed, but I would think depending on the pump design you would either see a drop in flow rate (from moving a larger volume of oil using the same force), or an increase in oil pump 'drag' on the engine but same flow rate (in the case that the pump is designed to move a fixed volume per stroke/rev/whatever regardless).

alan93rsa 05-18-2009 10:45 AM

Modshack,

Nice install and a very nice writeup. It should prove valuable to many on the list.

Alan

Gokart3 05-18-2009 11:00 AM

Quote:

Originally Posted by Modshack (Post 73977)
Heh heh...Thanks. Funny seeing you here..:tup:

Heh heh.... you never know. With your persuasive indoctrination skills, you may end up seeing more of me here. At least I didn't buy a Vette! :rofl2:

Modshack 05-18-2009 11:08 AM

Quote:

Originally Posted by wstar (Post 74481)
I have no idea how our (or other) oil pumps are designed, but I would think depending on the pump design you would either see a drop in flow rate (from moving a larger volume of oil using the same force), or an increase in oil pump 'drag' on the engine but same flow rate (in the case that the pump is designed to move a fixed volume per stroke/rev/whatever regardless).

I would think that the limitations in pressure and flow would be determined downstream of the filter and cooler, limited by Bearing clearances, oiling orfice sizes, the relief valve, viscosity, heat levels, thermal expansion etc. Once the system (cooler and filter) is pressurized the factors just listed will determine pressure and flow. There will naturally be less flow and higher pressure with cooler oil. This is mentioned in the service manual when testing on a cool engine and anyone who's ever had an oil pressure gauge on a car can confirm by observing pressure drops as an engine comes up to temperature....The VVEL failsafe system seems to be sensitive to pressure but is triggered by temps as it is assumed pressure and viscosity drops with extreme temperature rises (see graph at the top of my DIY)

SoCal 370Z 05-19-2009 02:03 AM

Quote:

Originally Posted by Modshack (Post 74070)
SoCal....

29" wide
19" high

Many thanks! :tup:

Gokart3 05-19-2009 10:30 AM

Hey Steve...

Thought I'd shoot up a quick comment. Not sure if you and I have ever discussed my Ghetto Grommet program. I used it when we put the Comptech supercharger and aftercooler in the S2000. The aftercooler had water lines that ran to a pump in the fender. You may already do this, so if it's a *R* epost, sorry. ;)

Since I'm paranoid of rubber hoses chafing on anything, when I cut holds for them to run thru, I usually go a tad bigger than I need, then make a grommet to surround the hole. I just cut some 1/4 inch rubber hose lengthwise, then wrap it over the cut edge of the plastic/metal that I cut a hole in. I drill a few small holes and then use zip ties to hold the Ghetto Grommet in place. Then I run the hoses thru so it's rubber on rubber instead of rubber on "anything else".

I even use this method in the reverse when running braided stainless line to keep it from sawing thru things. I use a piece of hose slightly larger than the stainless, wrap it, zip tie, etc.. Have a few of those on the STi now. Just thought I'd drop that one here.

You can just barely see the gray hose on the driver side of the aftercooler in this pic. There are two of them that run out of the bottom side of the aftercooler and down into the left front fender under the headlight. An our and return. Russ Scott and John LZ7W helped me with the routing/install/etc.. Good times.

http://images20.fotki.com/v382/photo...1010441-vi.jpg

I searched my Fotki acct but couldn't find any pics of the actual Ghetto Grommet, but I'm sure you get the idea. Now I've gotta look even closer at the 370Z since you're playing with one. Not sure if this here forum knows how much of a lottery they hit when you landed here, but sure they will soon if not already. :tup:

Any VTDA's out here yet??:icon17:


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