This morning i pulled the ole 3.0 after dynoing last week for baseline numbers. I then swapped all the sensors and intake manifold onto my 3.5 bottom end with 3.0 heads (vq30det) and jwt cams, obx headers, light weight flywheel, udp(on car prior too swap) and exhaust(on car prior too swap). well turnout is awesome it is very fast need to do some tuning though but will at least have 1/4 mile times soon.

 

Sweeet, Can't wait to see some numbers!

 

so you used a 3.5 lower end(whole block) or just 3.5 internals on 3.0 block

 

dyno and 1/4 mi run will be greatly by everyone here. how does the car sound. anyone hae an idea on numbers. any pics of the install

 

no pics?

i thought there was clearence issues with OBX headers...?

when you say "3.0 heads (vq30det)" how are your heads made for a turbo?

good luck...

 

Wow. Keep us posted.

Just for verification, you are running a 3.5 VQ in your 4th gen?

 

tillys are you still turbo or did you go back to an NA setup?

 

Rob,

Nice work, glad to hear its running...he had the turbo vq imported I believe, and he's had this project in the work for some time, 3 years I think

 

nice. definitely can't wait to see some numbers.

 

you have a vq35de block and vq30det cams? in a fourth gen..wow..

so this is like the honda kids "ls-VTEC" the LS block with vtec cams?.. must have been an insane project.. nice work.. pics please.

 

Tilleys99,

Were any mod's needed for the heads to fit correctly. Is the cylinder bore of the VQ35 block the same diameter as the VQ30? If not, how were you able to accomodate for the squish in the combustion chamber. I'm assuming the area on the VQ30 heads were either close enough or you had to open up the chamber on the heads slightly. Or were they just a perfect match? What CR do you think this combination is producing? Anyways, congrats on the project I'm glad to see another person on here doing some imaginative things.

 

What intake manifold did you use and would the US manifold work on the DET heads?

 

Another question I have is about the timing. Were there any issues getting the crank & the cam's to line up properly & did you have to modifiy the timing chain set up at all. I'm assuming the tentioner must of had enough adjustment to take up or allow for any slack?

 

Kick ****

 

Oh i forgot to say i put this in my girls car! but my car will be done in the next week probably. The DET heads supposedly have better springs so I threw them in, the cams are JWT. Last night I was holding in 2nd while my buddy in his 300zx (90) NA with some mods was in 1st then 2nd then third and he still couldnt pull ahead of me

 

I used all the 3.0 timing chain parts, and a usdm manifold but look for a mevi

 

Hey Tilley

Post up numbers when you got everything tuned up

 

btw first gear spins alot even with the 255s up front lol

 

hey we need pics of the engine bay! we all wanna see how good it looks heh

wish i would have a plain VQ35DE in my 4th gen.... but you push it a little farther and... i love it! we want 1/4 mile times!

 

Great job. Do you think you can post a write up? I'm sure plenty of people would attemp to do it, if you could post something similar to 5spd conversion instructions.

 

Yeah a write up would be awsome...does this run on street fuel?

 

Hey tilley the obx headers fit? A 3.0 guy couldn't get it too fit. Have you had any problems from the higher compression with the 3.0 heads?

 

obx headers suck you need to cut the brackets on the motor that go to the mount. No race fuel needed and no problems yet but I am installing a a/f gauge today just to see if its running proper.

 

So you put this in your girl's car not your car, that means this is an NA motor not a turbo motor right?

 

Damn man... that sounds awsome. Engine bay picks would be cool

 

thats right na with 11.5 to 1 comp

 

I wonder if that motor can handel nitrous with such a high compression

 

im tilleys gf, just wanted to say that i am very excited about my max.... now i def need to sell my accord..... the max is enough reason for me to change my previous view that since i wasnt drivin a civic, hondas were ok....yeah, theyre all junk

 

Thats what IM talking about..

 

your gonna sell that honda tilley just painted? ooooh it was purdy. oh well welcome to the nissan family!! good job Rob.

 

Fcukin A dude. Keep up posted

 

a/f is in and its running good no lean conditions

 

This is incredable! Do VQ30DET heads have to be used? is there something special about those heads that the U.S. heads don't have, other than the stronger valve springs?

-Chris

 

normal 3.0 heads would be fine just put them in cause my car will be using ported 3.5 heads and I have like 3 or 4 sets of 3.0 usdm heads sitting around

 

Your not using a 4th gen ECU are you?

 

OK, cool. I have been waiting to see if someone would actually get this up and running, I have a VQ30 engine sitting in my garage so now I have to get the 3.5 bottom and put em together. Was there any technical wiring that I will run into. I know the only sensor is the in the shortblock is the cranck sensor, other than that is it just a bolt on project?

 

3.5 headgaskets and block and the rest is all 3.0 stuff no wiring issues at all and no cel!

 

Wow this is so cool. Any chance there will ever be a writeup? This was basically bolt on correct? Not all the fabrication that was evidently involved in krismax's 00-01 VI?

 

its simple but not if your not mechanically inclined

 

So what parts from the 3.5 exactly did you use? I'd probably never actually do this, but it is something to think about. I can't get over how cool this is. Any idea on what kind of improvement this has given just from a butt dyno point of view?