I am not sure If I should be posting here or in the N/A Fourm.

I know N/A Guys are loving the VQ35 Swap and being that I am pulling my current engine anyways I was wondering if it would be worthwhile to prusue swapping in the VQ35 and then adapting my Turbo Setup to it.

Can the VQ35 withstand boost? If I recall correctly 350z / G35 owners have been known to have some troubles with thier Engines because of thier F/I setups, is this true?

If I were to do this swap the Engine would be left stock, unless porblems would occur by doing so.

or

I can just continue on with my plan of building my VQ30.

Would this swap be worth the trouble? Would I see any gains over a built VQ30?


Thanks.

JP

 

A built up VQ30 is going to have far higher power handling ability than a stock VQ35 will.

 

what does "built" mean?

everyone has their own idea of what it means.

 

VQ35 rods usually don't snap until very high power levels... A base SC kit with the 3.6" pulley on a VQ35 with headers would yield very good numbers... I know the 350z SC kit puts out 410WHP at only 7 psi of boost. So you get what a VQ30 would need a turbo to achieve with a Supercharger...

VQ35=800$
Certainly less than what it costs to build a VQ30

Or you could do like Mardi and hit two birds with a stone. I.E. build a VQ35

 

hmm....a Built VQ35 may be fun.

Do we know how much a VQ35 can handle in stock trim? I know we have members who have pushed thier Stock VQ30's to thier limits and it seems to be around the 500+ range or so, are the VQ35 capable of more.

Does the VQ30 offer any advantages over a VQ35 or does the saying No replacement for displament hold true in this case.

As far as my definition of Built:

Complete Gasket Set
Copper Performance Head Gasket
ROSS/Wiseco Forged Performance Pistons
(93, 94mm bore) and
(9-1 comp ratio)
Performance Rings
Performance Wrist Pins
TOGA HP Main Bearings
TOGA HP Rod Bearings
Thrust Washers
Freeze Plugs

and most likely JWT Valve Spring and possiably JWT Cams.

Any other opinions?

 

It seems that most stock VQ35 can hold around 430hp or more with a good tune job. The easiest route would to build the VQ35 cause you dont have to make any custom rods, pistons ect like you have to for the VQ30. I plan on going this route next spring with Arias Forged Piston Set 8.6:1 .020 Overbore, Pauter Forged Rod Set, ARP studs, and Tomei cams.

Good luck

 

Sometimes the VQ35 rods go sour at like 400-450whp. The VQ30 seems to be able to handle more than that with a good tune. I wouldn't bother with the swap unless you are going to build it and you would need over 500whp to justify it and then there are a lot of other things to worry about once your reach that power level.

 

most of that is due to interference with the timing signal. That is the main reason why APS sells that shielding kit.

 

You got pics of that turbo system? I didn't know you were up and running with a turbo

 

There has been ZERO proof of that...even APS couldn't duplicate the ONE time they supposedly recorded it. Sounds like a witch-hunt or marketing ploy to me. Many are just taking the "it couldn't hurt" route.

 

The biggest reason is TORQUE especially in the lower RPM.

For the single turbo guys, that extra 0.5L displacement will help spool big azz 60-1 non-BB turbos.

 

Personally, I'd follow Mardi's path on building a VQ35 shortblock on the side while working out all the turbo quirks on the VQ30, then drop it in.

However, I'd have to keep bumping the boost until I blew the VQ30, then swap.

 

I can't think of anyone whos broken a VQ30 solely from the stress on the parts associated with high horsepower. Most blown motors are a result of tuning problems or unforseen freak problems like a fuel injector being maxed out, etc.

From what little I've seen and experienced with VQ30s, I think the headgasket is the first thing to go. Not rods or pistons etc.

Has anyone done that with a Vq30 or a Vq35?