Engine Build Thread

[Chuck33079]

Spool isn't necessary a function of rpm. It's a function of exhaust gas volume and velocity. Higher rpm would provide more exhaust gas, as does greater displacement.

[kpjc4eva]

Originally Posted by Chuck33079

Spool isn't necessary a function of rpm. It's a function of exhaust gas volume and velocity. Higher rpm would provide more exhaust gas, as does greater displacement.

right.
so the revolutions are important. the more the higher volumes of gas and so forth as you stated.

but you going to tx2k13? see your from houston.

[Chuck33079]

A larger displacement engine will spool up a large turbo at a lower rpm than a smaller one. All things being equal, you'd end up at a similar peak power, with the larger engine producing more area under the curve. Also, unless you've chosen a turbo way too large, it's not hitting full boost at redline. You're more likely to see full boost between 3500 and 4500 rpm depending on turbo size.

[Chuck33079]

Originally Posted by Nixlimited

Why does sleeveing the block create so much additional heat? Do you think it was worth it to add the additional .3L given the heat issues that come with it?

Usually it's the combination of the thicker iron cylinder lining trapping more heat and the lining protruding further into the water jacket around the cylinder bore.

[bullitt5897]

Originally Posted by Chuck33079

Usually it's the combination of the thicker iron cylinder lining trapping more heat and the lining protruding further into the water jacket around the cylinder bore.

another good answer.

[scth83]

I am having mine done by GTM, 4.5L stroker, ITBs, Dry sump system. It would be done in Jan2013.

[tibal]

Originally Posted by scth83

I am having mine done by GTM, 4.5L stroker, ITBs, Dry sump system. It would be done in Jan2013.

Damn dude that is awesome. Can't wait to see that. Especially interested to see how the itbs come out

Sent from my Samsung Galaxy Note 2 via tapatalk

[Mr.Squeeze]

Wiseco 10:1 custom pistons
Eagle Rods
ARP L19 Head Studs
New Stock OEM Head gasket
Calico coated OEM bearings
Deatschwerks 850cc Injectors
CJM Motorsports Twin fuel pump
CJM fuel Return system
GTM fuel Rails
Uprev GT Maf's
R/T Tuning fuel feed lines
HKS EVC S boost controller
South Bend TZR Stage two clutch Rated @ 650 RWTQ

This is pretty much what I have on my car to reach my goal of 700 whp on high boost on this engine , I have another long block that I will be building next winter . Now for people that want 550-600 whp the fuel system that I have on this list can be taken off . A simple 340 lph pump wired from the battery,and bigger 850cc injectors stock fuel rails can be used .

I would also choose the K1 rods over the Eagle rods,and off the shelf 9:1 Wisceo pistons to keep things simple.

Also you do not need to do anything to the head just leave it alone

[Boost_lee]

Anyone know the stock sleeve power limit on the VQ37? I thought I stumbled across an 800-900 hp range for the HR motor...

[Mr.Squeeze]

Originally Posted by Boost_lee

Anyone know the stock sleeve power limit on the VQ37? I thought I stumbled across an 800-900 hp range for the HR motor...

This is something I would like to know my self ,however there aren't any guys pushing them on the 3.7. I will say this much there are a few DE engines that have been pushed that far though. I plan on pushing mine to around 22-23 psi ,and see where it lands.

[DIGItonium]

So you pretty much left the valve train alone with this build? I don't plan to push more than 600 whp. It would be fun to have a higher rev, but not sure how VVEL would cope with that.

[Mr.Squeeze]

Originally Posted by DIGItonium

So you pretty much left the valve train alone with this build? I don't plan to push more than 600 whp. It would be fun to have a higher rev, but not sure how VVEL would cope with that.

No need to rev higher if your not making power up top just more stress. I have mine raised just a hair to 7800 rpm's, plus I have heard of the oil pumps on older VQ's letting go at high rpm's.

[elliotty]

Reviving the thread with a question:

Are the VQ35 Main/Head Studs the same as the VQ37? Specifically looking at the ARP offerings.

[esfourteen]

Originally Posted by elliotty

Reviving the thread with a question:

Are the VQ35 Main/Head Studs the same as the VQ37? Specifically looking at the ARP offerings.

I believe the head studs are all the same and for the mains you want studs for an HR. My block had to go back to the machine shop this week to get line honed for the ARP mains, I forgot I had them line hone it with the oem studs

[elliotty]

Originally Posted by esfourteen

I believe the head studs are all the same and for the mains you want studs for an HR. My block had to go back to the machine shop this week to get line honed for the ARP mains, I forgot I had them line hone it with the oem studs

Thanks, good to know! I have found a few sets of studs for sale on my350z and wanted to know if they will work.

What about head gaskets? I am guessing we need VQ37VHR specific ones?