Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Announcing the release of the STILLEN race oil cooler (http://www.the370z.com/engine-drivetrain/8687-announcing-release-stillen-race-oil-cooler.html)

Kyle@STILLEN 09-08-2009 06:09 PM
Quote:
Originally Posted by ZForce (Post 187501)
Kyle, my apologies if I sounded pushy, I did not realize you were indeed taking care of the 370Z community. Appreciate the response on street recommendations versus track. Keep up the great work guys.
No apologies necessary. I understand your enthusiasm and I thank you for it! If you guys have any questions please do not hesitate to ask!

I will admit that I don't get to spend as much time on the forums talking about our parts as I'd like. I'm kind of nosey so I'm always out in the shop or in R&D snooping around and trying to gather more information. I try to come back as often as I can though to offer more information.

imag 09-08-2009 06:10 PM
Quote:
Originally Posted by Minicobra1 (Post 187166)
So is there a dis-advantage to running the race cooler on the street? I was just driving in traffic yesterday (it was hot, bout 98deg) and was not even close to driving aggressive, my oil temp was fluctuating from 240 - 250. Even on a cool day, my average oil temp is 220. If the race cooler has a 40 degree reduction, would still be at 180 right? Also, I plan on running a supercharger, I have a feeling this will kick up temperatures a bit. Is running the car with too low an oil temp bad, and what is considered too low for this car?
I notice that the car runs really good and feels way more responsive when first starting up in the morning, but as soon as it starts creeping into the 200 range it starts to feel sluggish.
This may be too obvious to mention, but when you first start it up in the morning, it will run rich. This would make it feel more responsive. The ECU will obviously take that down after a few minutes of run time (it's usually only a minute or two for me at around 50-60 degrees ambient).

If the effect you're talking about is different and lasts all the way up to 190 degree oil temp, then please disregard this post :rolleyes:

imag 09-08-2009 06:17 PM
For those of us trying to decide between this and the Nissan Motorsports kit - did you guys upsize the lines to 5/8" for the race kit? Do the Stillen engineers think that matters?

I'm not trying to start a battle here, but I am trying to decide which route to take. It does seem like a 34-row cooler isn't getting fully utilized; it seems surprising that Nissan would screw that up. I guess I'm just trying to find something that will help tip the balance one way or the other...

Minicobra1 09-09-2009 03:24 AM
Quote:
Originally Posted by Kyle@STILLEN (Post 190296)
Judging by your list of modifications in your sig. I'm assuming you do not currently have our street oil cooler? I would suggest starting with this. For street use I think you would have a hard time pushing the temperatures beyond a safe point with the street cooler. The race cooler might be a bit much.

When we say that the race cooler might be a bit much we mean that in two ways: 1) financially speaking-At the end of the day the race cooler is substantially more expensive. We know this but the core is substantially larger so the cost is going to be more. I firmly believe in the philosophy that if you don't need to spend the money, why spend it? If you don't plan on driving your car hard on the race track then the street cooler will be fine for you. 2) Streetability- With the race oil cooler in particular you will want to have a thermostatic plate installed. We will have this option soon, we're just trying to find a source so that we can be competitively priced. As it stands right now you can pick up a thermostatic plate for pretty cheap from sources like Amazon.

It is possible to have your oil run too cold. 180-200 degrees is pretty much optimum and realistically 180 is on the cool side.
Thanks for the info and recommendations Kyle :tup:

Kyle@STILLEN 09-09-2009 10:27 AM
Quote:
Originally Posted by imag (Post 190309)
For those of us trying to decide between this and the Nissan Motorsports kit - did you guys upsize the lines to 5/8" for the race kit? Do the Stillen engineers think that matters?

I'm not trying to start a battle here, but I am trying to decide which route to take. It does seem like a 34-row cooler isn't getting fully utilized; it seems surprising that Nissan would screw that up. I guess I'm just trying to find something that will help tip the balance one way or the other...
We have decided to stick with the -8 braided lines. The main factor for this is the engine itself. The oil ports in the VQ37 where the oil comes out into the filter assembly (where the sandwich plate is located) are pretty small. There's no real point to going with a large line after coming out of a small opening. The -8 lines we use are about the same size as the oil channels and this ensures that the oil pressures do not fluctuate too far (if at all) from factory specs. The only benefit to a -10 line is the slightly increased volume. Other than that there will be no gain in pressure or performance.

imag 09-09-2009 11:19 AM
Fair enough. Thanks. Honestly, I'm actually leaning toward your cooler because 26 vs. 34 rows means less oil - and less weight - in the front of the car. If the top 8 rows aren't getting direct airflow, they aren't doing much anyway, so it seems like it's mostly just a volume addition.

I do have to hope that the extra few rows on your new cooler vs. the old cooler will be enough to take the heat from a supercharged engine on the track, should I want to go that route in the long run...

Valentino 09-09-2009 06:20 PM
Quote:
Originally Posted by imag (Post 191373)
I do have to hope that the extra few rows on your new cooler vs. the old cooler will be enough to take the heat from a supercharged engine on the track, should I want to go that route in the long run...
^I hope the same too. I already ordered The race cooler and the upgraded steering cooler. The good thing about the Stillen cooler is that the oil cooler is going to be on the passenger side. that and the bigger core made the decision for me.

ResIpsa 09-10-2009 11:45 AM
Quote:
Originally Posted by Kyle@STILLEN (Post 191310)
We have decided to stick with the -8 braided lines. The main factor for this is the engine itself. The oil ports in the VQ37 where the oil comes out into the filter assembly (where the sandwich plate is located) are pretty small. There's no real point to going with a large line after coming out of a small opening. The -8 lines we use are about the same size as the oil channels and this ensures that the oil pressures do not fluctuate too far (if at all) from factory specs. The only benefit to a -10 line is the slightly increased volume. Other than that there will be no gain in pressure or performance.
Kyle, my track cooler was just shipped today.

Question, would I have any issues with swapping in a Mocal 20mm thermostatic sandwich plate?

Modshack 09-10-2009 12:45 PM
Quote:
Originally Posted by ResIpsa (Post 192480)

Question, would I have any issues with swapping in a Mocal 20mm thermostatic sandwich plate?
Just make sure you order AN8 fittings for the plate inlet and outlet..

ResIpsa 09-10-2009 01:08 PM
Quote:
Originally Posted by Modshack (Post 192535)
Just make sure you order AN8 fittings for the plate inlet and outlet..
Do you know if the AN fittings supplied in the Stillen kit fit the Mocal?

Modshack 09-10-2009 01:25 PM
Quote:
Originally Posted by ResIpsa (Post 192562)
Do you know if the AN fittings supplied in the Stillen kit fit the Mocal?
No clue..

ResIpsa 09-10-2009 06:46 PM
Quote:
Originally Posted by Modshack (Post 192574)
No clue..
That is one of the most refreshing answers I have ever received on this forum.

No guessing...

No speculation...

No theorizing...

If you don't know, you don't know.

ResIpsa 09-12-2009 01:31 PM
Mocal Thermostatic Sandwich Plate
 
I have the answer regarding exchanging the Stillen sandwich plate with a Mocal thermostatic one. The supplied stillen fittings will not work. You need to get two 90 degree 1/2 BSP to 8 AN fitting and two Mocal bonded washers. The total cost is around $110.

This will allow the Mocal unit to replace the Stillen unit exactly.

If this all sounds like another language you can call BatInc. and they will assist you in getting the right parts.

My thermostatic sandwich plate and my Stillen track cooler are currently in transit. I will update with the performance of this setup when everything is installed.

I am hoping that temps will barely go north of 190 degrees on the street and 220 on the track.

1slow370 09-13-2009 03:45 AM
Quote:
Originally Posted by Kyle@STILLEN (Post 190296)
It is possible to have your oil run too cold. 180-200 degrees is pretty much optimum and realistically 180 is on the cool side.
That can't be the Nissan people told me 220-260 is optimal and perfectly fine(true story)

racerxj17 09-13-2009 03:49 AM
Quote:
Originally Posted by 1slow370 (Post 196786)
That can't be the Nissan people told me 220-260 is optimal and perfectly fine(true story)
i hope your being sarcastic.


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