Jim Wolf Cam testing for the VQ37VHR -- Results inside!
When the time came for the 370Z Exhaust cams to be produced, we were more than happy to work with them to get a car in here and do some test work with the prototypes. After working with Jim Wolf for many years, we always jump at the chance to work with their new products as its always fun to see what they do. The VVEL system is so well designed in this car, and intake cam is just not needed as an upgrade. We are excited to work more on testing the limits of the VVEL in the future but that is for a different post! This is not an easy task for sure, but I think in the end the results are worth it, even more so as an add on to a motor build or a turbo set up when the motor is already out of the car. PM ME FOR A PRICE ON THIS SET UP The first Step in the process is to disconnect all the lines and wires that will connect the engine and transmission to the chassis, from there you will pull the driveshaft and all subframe mounting bolts, and trans mount bolts (With the engine cradle supported) and lift the chassis off the cradle. http://www.ma-motorsports.com/wp-con...3024636751.jpg http://www.ma-motorsports.com/wp-con...3025047132.jpg Once that is completed, the next step will be to pull all the accessories and intake manifold from the engine to gain access to the valve covers. http://www.ma-motorsports.com/wp-con...3024660671.jpg http://www.ma-motorsports.com/wp-con...3024670992.jpg With that done, you will now pull the valve covers and front cover off the motor. Then you will remove the VVEL Motors. (Make sure cylinder one is at TDC) http://www.ma-motorsports.com/wp-con...3024679883.jpg Moving on to all the moving components in the timing system, you will want to lock the tensioner in place and remove all the chains and gears from the front of the cams and be very careful about keeping this all in order, we used an empty table to mark and lay out each grouping of components to keep it all organized. http://www.ma-motorsports.com/wp-con...3024689175.jpg You will now remove all the cam cap bolts and the bed plate including the VVEL components. Be sure to keep all of this in order. http://www.ma-motorsports.com/wp-con...3024698234.jpg http://www.ma-motorsports.com/wp-con...3024708549.jpg http://www.ma-motorsports.com/wp-con...3024721321.jpg With all of that off, you will now work on the springs, we use a tool to pressurize the cylinders, and a simple spring compressor to pull the clips and retainers out. Repeat this process on all exhaust springs and replace it with the JWT springs from the kit. http://www.ma-motorsports.com/wp-con...3024738127.jpg http://www.ma-motorsports.com/wp-con...3024758970.jpg http://www.ma-motorsports.com/wp-con...3024774537.jpg Moving on, you will now want to place a small bead of RTV for the valve covers as it will need some time to set. http://www.ma-motorsports.com/wp-con...3024791650.jpg To install the cams, apply a liberal dose of assembly lube to the journals and set the cams in then apply lube to the top of the cams and place the cam cap assembly and VVEL assembly on. Torque it all down to spec and re-place VVEL motor on the rear. http://www.ma-motorsports.com/wp-con...3024804189.jpg http://www.ma-motorsports.com/wp-con...3024816249.jpg http://www.ma-motorsports.com/wp-con...3024828300.jpg From there you will assemble all the timing components and torque to spec http://www.ma-motorsports.com/wp-con...3024841504.jpg http://www.ma-motorsports.com/wp-con...3024853507.jpg http://www.ma-motorsports.com/wp-con...3024866822.jpg Reassemble the accessories and intake and drop chassis back over the cradle and bolt it all in. http://www.ma-motorsports.com/wp-con...3024877419.jpg These specific cams where a very conservative grind (Think of it as a stage 1) just to see how the motor would react, we are currently working on a set that will go into a Fast Intentions Twin turbo build, and are also working with JWT on some larger profile units so we can start to push it all a little farther. Here is a comparison to the stock cam: http://www.ma-motorsports.com/wp-con...3024888275.jpg This car baselined at 298hp and 227tq (This was after an uprev tune, on a motor with a cat back and intake) after the cams the motor produced 309.5hp 258tq to the wheels. So the real star of this was the torque increase in the midrange as that is very noticeable when behind the wheel. http://www.ma-motorsports.com/wp-con...WT370ZDYNO.jpg PM ME FOR A PRICE ON THIS SET UP Feel free to post up any questions you may have! |
Awesome results. I'd be curious to know what the all in cost on something like this would be. Definitely not something I'd be able to handle in my garage.
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They came out with this sooner than i expected? Are they making a valvetrain upgrade as well?
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Exciting stuff !
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Awesome i just pm'd you.
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Interesting. About time we got several choices.
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Is this grind a new billet or re-grind?
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Once thing to be aware of, and I am working with JWT to nail down some solid info. For a brief period of time Nissan did not do a DLC coating on the exhaust side cam bucket. Those buckets are required for these cams due to the tolerances. Its an easy and cheap swap, and once we have exact manufacture dates I will keep everyone updated as far as who needs to buy those with the cams.
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Is jwt still working on a cam conversion for the intake side?
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Yes they are, but really unless you are swapping the car to another chassis that has space constraints it not going to be a power adder really. |
I gotcha
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So the car that was tested on had stock Cats? Also Pm price to 66215 with springs
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Also will the cams change the idle sound?
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any vids?
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What angle is it? Any idea how it compares to the JUN 282 degree cam? Thanks.
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There is a bit of cam hickup at idle but nothing stellar...will pass for stock to the untrained ear.
Torque increase is noticeable while driving for sure...especially on the low end, if you look at the graph around 3500rpm there is a bump of about 20ft/lbs; as most daily driving is done from 1000-4000rpm its a nice addition. I'd expect gains to be larger with a set of proper headers but the goal of this test was to put them in a 'typical street z' and see what they would do... that being said this car still has factory headers, which are shorties. |
I would be interested in one to match a NA stroker motor build at high compression. JWT have anything in the works for that?
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Heads inspected and cleaned Heads redecked Ported exhaust and intake runners 3 angle valve job New OEM Valve stem seals installed Valve Stem Heights set Cold Clearance set for stock cams Heads prepped and assembled Cam install. Money doesnt grow on trees but at the same time i purchased a 2k exhaust, 1k intake. Just gotta save and do what makes you happy. |
30 ft-lbs of torque is a real nice gain. Damn you guys. I thought I was done modding my car.
Sent from my Nexus 7 using Tapatalk |
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Think of these as S1 cams, next set will be S2 and so on...in theory we can only improve on these as in the grand scheme of things these are not crazy at all. So long story short, yes, there is something in the works more aggressive. |
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Subd awaiting stage 2!!!
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Guess i'm going to have to talk to my Seb@specialtyz and see what he will charge for install..
Any idea as to when the cam will be available to buy? |
guys are really considering this :/
30 WHTQ for 25HRS of labor ,what's that like cost like $2,000 plus parts and misc crap , I'll pass, waste of $$$ |
You can blame nissan for making the heads so complicated. It's not a bad mod, just its labor intensive, or just download an fsm and do it yourself. For 1600 you can have these cams installed with built heads.
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I embrace this to anyone of purchases this mod. At the end of the day its there money, im sure some people say the same thing with whatever mods anyone has done to tier vehicles.
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oh yeah to far away from me..lol..ill talk to the shop that does all my installs next month when i get my headers install and see what they will charge
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20-25 labor lol
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For cams :/ |
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I want to see stage 2 numbers before pulling the trigger on these |
Same here, im waiting for an intake mainfold to come out. Before i pull the trigger.on the cams
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Need a better flowing manifold also
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