Guys, I am looking for at least 450whp out of my O5 35th with the new rev-up motor. I have been working with SGP here in Houston. I know about the different cam phasing etc. I keep hearing about new pistons, rods, crankshaft etc. If the rev-up does have better rods, pistons, and crank, I will go for 450 or even 500whp. I will stay where I am if these upgrades have not been made until I go for a build. Who can give me proof whether or not the rods, pistons, and crank, have or have not been changed for the better. No need to build if I can safely hit 450 or so on stock block at 7.5psi. I need to know for sure. Where do I go to find this out for sure?

 

86 viewed with not one response. I would have thought that someone could give a starting point to finding this information.

 

Only change on the motor is the rod bolts from Nissan. Crank, rods, and pistons are the same as before.

 

So how do you know this for sure?
Understand that there are many new part numbers for the 05 short block.
Let me tell you I know for a fact, There are many new parts. The upgrade in the short block are on the up scale.

 

There was a post awhile ago about this. A member blew up there 05 and the shop doing the re-build compared the parts from each motor. Rods and pistons were identical. Photos were posted to compare the parts. Crank is already forged so there was no reason to change that. Even a slight change in the windage tray will give a shortblock a new part #.....new part # doesn't mean a thing. There were many posts about this months ago when the 300hp 05 motor first came out. Major differences were the cam phasing, lower plenum design, and the upgraded rod bolts.

 

If you want to see all the differences in the REV-UP motor here are all the parts that are different...

http://www.performancenissanparts.co...&Submit=Search

The many new parts are listed in that link... Thats it... as well as new harness for the engine room as well as ECU...

You can not use the REV UP motors heads on a 287 motor unless you change to the REV UP Pistons... The REv UP pistons have a different deck height...

You can use the REV UP cams in the 287 motor if you machine off the exhaust timing pins of the exhaust cams...

Crank is different, connecting rods go back to the Z32 style...

I did a huge post on this when the REV UP motor came out...

 

Jason
The photos you posted early this year of the revup rods, clearly showed the rod with studs & nuts.
Yet when MRC posted pictures of a rod with bearing failure in a 05 6sp G35 motor that he said had VCT on the exhaust cams (revup), it showed the rod with the old style bolt.
What gives ?

 

I dont know? I didnt hear about that...

The rod bearings are the same for all the VQ's...

Maybe that is a difference in the REV-UP between the G35 and 350Z?

Ill check the part numbers for the G35 to see if they match the 350Z...

 

thats my car your talking about..

 

heres the link..

http://www.g35driver.com/forums/showthread.php?t=74386

 

i dont know if its me but the pistons def look diferent.. i know for a fact that the crank is different also.. and the bearings but i dont know about the rods..

 

oh yeah.. so if they are different.. will the aftermarket internals still work on this motor? i dont even know if the shop started on my build yet.. they had to order 05 crank and bearings and last i heard they were waiting on those parts...

 

I appreciate this dialog guys. So far, I think Jason seems to know what he is talking about. Forgive for not finding the ealier postings. It is very important for me to know what is new/better so that I can plan the boost increases on stock block. I understand that tuning is key and SGP will be handling that for me. I would like to see this stock block reach 500rwhp. If the rev up does in fact have revised cams, crank, rods, rod bolts, and pistons, then it's a go to 480-500 on rev up stock block. What whp did the stock rev up blow at????

 

it didnt blow.. rod end bearing failure due to oil starvation but i dynoed at 420rwhp

 

oil starvation? Low on oil or oil pump failure? I am at 421 right now and it runs strong but I need more. I just want to be sure that the "upgraded" internals can handle it.

 

Looking in this thread... the piston on the RIGHT has the AC stamped in it which is the REVISED piston for the REV-UP motor...



here is a REV-UP connecting rod:



Unforutnatly my Infiniti parts system doesnt go over 2003 :-/ (LAME!)

So I am on hold with Infiniti to try and get one of them to find the part numbers for me...

I never went through the infiniti parts system to see if the connecting rods are different or what parts have changed...

The INFINITI motor may very well be just the new heads / pistons / valve springs and that be it!

(Funny, I had to tell the guy at infiniti where the connecting rod was)

(still on hold)(4 mins now)

calling a 2nd infiniti dealer... again, asked me if I was talking about the one in the engine

(to confirm this)

ok...

Its suposed to be the same connecting rods that are in the 350Z REV-UP motor...

If you send me the VIN for that G35 I can look up which parts are SUPPOSED to be in it...

 

"We also checked the rod bolts,they are still bolts but they are a bit bigger than the 03's.."

 

So, Jason, humor me here, we are talking about improved lower plenum, cams, pistons, rods, rod bolts, and crankshaft? If this is truly the case, I would be prepared to take this motor safely to 500rwhp. It would probably only take about 7.5 to 8psi to get there. What does everyone think about this?

 

so will all the aftermarket pistons still work in the revup block?

 

Jason

I have a few questions? Did they drop the deck height on the rev up pistons?
If that is the case, that would be a nice install for a turbo setup on an 03 & 04 engine.
My best guess is they designed the combustion chambers smaller on the rev-up.
One more question would be, Has the piston pin height changed or has the rod length changed.
IM trying to understand what Nissan is thinking. Did the cam timing change on the rev-up engine? Th.'s Pasta