Engine Build Thread

[Nissan370]

96mm
sorry man its 96mm we went .5 overbore to clean the sleeves up

[elperuano]

Around how much does it cost for built motor?

[DIGItonium]

There are overkill builds, so don't hesitate to share since we can cherry pick some ideas from there.

Some of you pretty much answered my question about piston diameter, so I'll stick with 95.5.

I'm researching WPC versus Calico coatings. Supposedly, WPC can strengthen the metal and provide a better oiling surface. It is not a coating treatment. For surfaces not subjected to friction, perhaps some sort of coating should help? Just need to find a balance. [EDIT] Possibly WPC treated pistons with Calico top coat.

Okay, so if the valve train doesn't need upgrades I can retain the stock rev limit and $2k+ worth of parts and labor might not be justifiable. Since the valves aren't quite subjected to frictional stress, how about heat stress? Plus, I don't think I hear much about valve failure. Maybe the valves can be coated, and that we can get better seals? For my purpose, it's still a daily driver so it won't be subjected to 24 hours of Le Mans scenario haha.

[Nissan370]

cost me $8700 fully built blueprint installed total that included 1400 bucks for new vvel that i may or may not have needed and my dam 2012 summer with no car ( so not planned but its water under the bridge now)
and as you pointed out elperuano no were near my motors ability she should be able to hold 700+ whp and i am sitting at just over 400whp
lotta over head for me

ps. for me it was get another motor and drop it in or get the one i had built for a few more bucks so i just went with the rebuild
since leaving ford i dont fine much cheap about nissan

its 96mm not 95.5 we did a .5 overbore since the motor did blow to help clean the sleeves up (ie scratches on the walls)

[G37sHKS]

What we need is:

Forged Pistons
Wiseco VQ37 Forged Piston Sets
Forged/Billet Rods
K1 Technologies Connecting Rods for 09-10 infiniti g37 Import Image Racing
APR L19 Head Studs
ARP VQ37VHR L19 Head Studs
APR Main Studs
GTM Motorsports*::*ENGINE INTERNALS*::*ARP VQ35/37 Main Stud kit
Thicker Head gasket
Cosworth MLS Performance Head Gaskets for 370Z/G37 - Injected Performance
And buy new bearings and coat them in any local shop
Some high cc injectors and how flow fuel pump.

Now of course you can choose different brand of forged internal like eagle and CP pistons or what ever you feel comfortable with but for me they are all the same.. forged is forged

One thing I wanna suggest also is try not to bore you block.. I mean seriously.. if boring it will not harm the ridged of the sleeves, Nissan would be proudly done that from factory for extra hp/tq for free

[elperuano]

8700 for built motor and install plus the VVEL. That's good to know thanks, time to start saving my pennies!
Also g37s that is pretty much the blue print! Hopefully we start seeing builds like this soon! Kinda makes me wish I would have gone built motor from the beginning. Having just installed TT and driving 8 hours for tune, it's gonna suck to go thru it all again.
Side question, up to what psi is the stage 2 Gtm TT kit good for before its "over-spinning" and blowing hot air. I'm at 12 psi now and I'd like to turn it up some with built motor but I'm wondering if I'll have to upgrade to stage 3 with a built motor.

[G37sHKS]

12 psi on Daily drive?

[elperuano]

Yes sir!
Love my tune, 5k miles. DD with 12 lbs.

[DIGItonium]

That's nuts on a stock block haha. I have my MBC set to about 8-9 PSI, and on a daily basis my engine hardly sees 5 PSI (half throttle). Only times I have the need to max it out is for a few spirited tests or showing off to my friends with a test drive.

I'm more worried about spinning the bearings than snapping a rod. [shrugs]

I definitely won't bore the block, but to hone it and possibly run 96 mm pistons. That's it. Are the pins treated or coated in any fashion?

OK, I probably don't see the need for GTX turbos then. I wouldn't mind getting new/updated internals before re-installing, though.

[Nissan370]

dam i am tring to make that stillen kit work wish i did more research from the start. 1 step forward 2 steps back. now i have to save up for the turbo kit and hope to sell the stillen kit for atleast 3500.00 to get some kinda money back it was 9200 to buy,install and tune it

[G37sHKS]

Originally Posted by DIGItonium

That's nuts on a stock block haha. I have my MBC set to about 8-9 PSI, and on a daily basis my engine hardly sees 5 PSI (half throttle). Only times I have the need to max it out is for a few spirited tests or showing off to my friends with a test drive.

I'm more worried about spinning the bearings than snapping a rod. [shrugs]

I definitely won't bore the block, but to hone it and possibly run 96 mm pistons. That's it. Are the pins treated or coated in any fashion?

OK, I probably don't see the need for GTX turbos then. I wouldn't mind getting new/updated internals before re-installing, though.

Boring and honing is the same.. I would get 95.5 pistons and hone it a little bit for .045 Piston to wall clearance

As for pins.. yes Wiseco already offer upgraded pins for turbo cars, if I remember correctly it was $10 for upgrade per piece.. here the link. Automotive Accessories For Drag Racing, Sport Compacts & More. - Wiseco Piston Inc.
as you can see. there are different kind of pins..

[elperuano]

This is my 2nd boosted VQ. First g35 I had a gt35r and was about the max torque the stock block could handle. 8lbs at 420/400 on mustang dyno and I drove her hard everyday. The g37 is a stronger motor and the rods r beefier. This set-up I'm at 534/500 and it's an absolute blast to drive. She sees full boost almost every day. I guess I love te power, I feel like I got a little understanding how these cars like boost. With a good solid tune n install the 37 should be able to hold power well. So far no problems! But if I do blow my motor then I get to do my engine build sooner than later. I honestly feel like where I'm at now this motor will hold for awhile. Only time will tell but I sure didnt spend all this money to play it "safe". Up to a certain amount yes but you only live once and I wanna enjoy the hell outta this ride. Lots of street fun with buncha other boosted rides. Evo, GTR, Subbies, big turbo Hondas n Tegs, Genesis turbo, even ran with a Bugatti on the highway which was fun as hell. Yea, this car sees A LOT of boost. If there's anything I can confirm with the 37 is that it loves boost and the engine has held up so far with no problems at all.

[DIGItonium]

Okay 95.5 mm pistons for this build with upgraded wrist pins.

What do you guys think about GTM's valve train upgrade kit? It's around $1500. So far that covers Viton seals.

[elliotty]

Just to throw another option out there: Anyone considering stroker kits? I plan on doing an engine build in the future as well and figured if I am in there and buying all the parts, why not go big? Would there be any additional upgrades needed, other than the additional work at the machine shop?

Both GTM and Brian Crower offer some pretty attractive kits.

[tibal]

Originally Posted by Nissan370

dam i am tring to make that stillen kit work wish i did more research from the start. 1 step forward 2 steps back. now i have to save up for the turbo kit and hope to sell the stillen kit for atleast 3500.00 to get some kinda money back it was 9200 to buy,install and tune it

Sheesh! Hopefully u can get that or maybe a bit more. That's how it always is, get one thing done and two more pop up.

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