Impressive and very thorough! Interesting finds indeed!

 

Confirmation for pre-07 clutch and flywheels not working on the 07?

 

According to Nissan no, I was considering upgrading to the Nismo clutch... the '06 or older will not work.

John

 

I'm mainly interested in the heads... it would be nice to be able to slap the HR heads on and get a nice redline increase..

Someone go get some HR heads and slap them on a <06 :P

 

Well hurry up sharif and open that thing up....

 

Talked with him last night. Looks like they are pretty busy. Looking at next week before they start taking it apart.

Jeremy

 

So what exactly are they going to do when they have it broken down?

Cheers

Kevin

 

wow, some people on here really amaze me...

 

Play with stuff.

 

This is really interesting can't wait to here more.

 

i really hate to be that annoying guy, but does anybody have pics of the stock collector/inside of headers?

 

Nice finding Sharif, thanks Jeremy for letting Forged Team taking it apart

Sharif i have a small question please, i know i`m a dumb when it comes to engine internals, but do you think that we VQ35DE owners can put the Crank of the VQ37HR which have 86 storke in our motors with 96 Bore so we can get 3.8 Stroker Engine in a cheaper way ? Thanks in advance

P.S: i thought this is the VQ37HR just noticed the title after the end

 

We are going to break down the engine, and caress the internals for starters...hehe. But honestly, we just want to take a peak inside, and see what's in there.

We'll keep you posted as we start the breakdown. Not sure how far we will get into it....prior to Jeremy's car arriving back in our shop.

 

The swap will not work. The block is taller, so even if the crank and pistons fit, the pistons will most likely hit the valves on the VQ35 heads.

 

So will there be a VQ40HR for the Xterra and Frontier? Also is it safe to assume that since VQ37HR crank is bigger the VQ40 crank and other engine parts may not work either?

 

More speculation, but my guess is probably not. We recently took apart a pathfinder VQ35, just about everything was crappier...the heads, timing assembly, camshafts, cam gears, tensioners...everything. The only usable piece was the block/crank, which is virtually identical to the 350Z VQ35.

Truck/SUV engines are tuned very differently. They need lots of low end trq, which results in less top end power....so I doubt they would use the HR in the pathfinder..but I could be wrong!

 

nice work... let me know if more test dumies are needed....

 

LOL johhny 5

 

Bump for answers

 

OK, we pulled the upper plenum, and this nice is NICE. We figured the waffle pattern on the top is to strengthen the composite for...you guessed it...BOOST! The more we crack into this thing, the more we are convinced this engine has been tailered physically for boost.

The upper/middle collector is now one piece, and appears to be glued together with some kind of apoxy.
Velocity stacks are contured and nicely integrated into the upper plenum. Also notice the larger collectors on the sides, for increased volume.

The lower collector is very straight, and uses large square runners...another interesting find. The TB's are 60mm.

Here are some pics: