I'm going the 3.5 bottem end with 3.0 heads route
 

I spoke with Tilley earlier and he seems like he is a very knowledgeable guy. I hope to get realibility (new motor pretty much with 3.5 valve springs, and new valve seals in the 3.0 head), and some more power! I will build my auto tranny sometime after I get the swap. Any complications that might arise? Anything I should look for. I told him to look out for a 2001 VI and Headers (OBX, Cattman whatever fits and works and is decent quality). 13's here I come!!! Btw, my ecu will still work with no codes so basically it seems as if it is a very good reliable and worthwhile swap.

fyi, the obx headers have to be notched around the motor mounts, which compromises the durability of them.... not with normal driving, but track racing with drag radials and 4k launches (or whatever tilley was doing with my car) twisted the motor mount.... i highly suggest getting a set of place racing motor mounts if you are serious about takin it to the track, btw

it is a good swap and very dependable. my car only left me sit because i broke the carrier bearing to the driveshaft.... the motor is solid :spin:

:spin: .

should just do a full 3.5 minus VCT

What's VCT?


And yes he did mention the OBX headers have to be placed around the motor mounts, what about cattman headers or other brands? Should I should have the motor mounts replaced after he puts in the OBX?

I havent mastered a full 3.5 swap yet but its in the workings. VCT is a cam timing control thats on a 3.5. The simple way to do it is with 3.0 heads cause it will not cause any CELs. Im not confident enough doing a full 3.5 and not having cel's. Also a full 3.5 will cost abit more cause lots of customizing needed.

Well unless a full 3.5 swap was giving me tons of more power without realibility issues and CEL codes then I don't think it would be worth it. Would I still be able to go FI with a 3.5 bottem end and 3.0 heads and still have the car be realible? Say like a V2 S/C with a 3.125-2.87" pulley?

NO compression is too high to run boost safely.

screw the boost, you'll have a torque monster.

Yeah man or so I heard I can not wait for now I am strictly going 3.5 Bottemend, with 3.0 heads from a low mileage VQ30DE, 3.5 Valve Springs, and new valve seals with stock IM, OBX headers (maybe cattman??), and Pathfinder .70mm TB that's if Tilley can find one which I hope he can, and in the future I'll either Extrude Hone the IM that I have now, or go with a '00 VI or MEVI. I have a stage II VB on the trans. right now so I'll either build this one or build another tranny that I'm getting if that's the case I'll have it shot - peened, cryo treated, and put in a stage III VB. 13's HERE I COME!!! WOOOOO CAN'T WAIT! The swap is coming within 2-3 weeks!

For people thinking of going with the F/I route I say you do think about this, Tilley ran a 13.87 without ECU, and without PFinder TB. That's quite fast for a N/A. Plus you have the reliability of a N/A car as oppossed to a F/I car, but who am I to talk, knowing me I'll probably drop a 100-125 wet shot. Can we say 12's??? Ha! Some sleeper she'll be :drool1:

Very nice.. but you'll have to be very careful with the spray.. again high compression. But either way wow...

The spray is still something I am contemplating on, and I'm still trying to understand the concept of how my compression will be high with a 3.0 head and 3.5 bottem. Forgive me if I sound stupid, but I don't know a whole lot about building motors...

Tilley get that swap done, or i'll have to kill you

What swap? 280z w/vq? full 3.5 on 4th gen ecu?

I hope that guy sells me the PFinder TB, Tilley said he can make the adapter block and I hope he can port match it as well. My buddy is going to install the MEVI with a switch for a fairly good price, so all that remains is the headers...

I can vouch for your car becoming a torque monster. Is Rob doing the swap around christmas time?

I thought his name was tilley?? lol

Rob's his first name, Tilley's his last

Cool welcome to the hybrid club :doublethu I hope to have mine running next weekend, only if Rob remembers to send my cams and what not :nupe500: lol


Then :nx:

Then....full 3.5 3.0 ECU on boost :nod:


:bowdown: Rob Tilley

so hold on.. now how much how much horses are ou gonna be pushing.. at the wheel where all is said and done..? jsut out of curiosity.. cause my tranny is slipping once in a blue moon.. and m motor is reaching the 100's i was thinkign about doing the 3.5 bottom.. 3.0 top and pathTB... and a 5gen anniversary edition LSD tranny swap...

now i was curious as to how may horses.. when its all done..

Put it this way Tilleys99 ran a 13.87 on a 3.5 bottem with 3.0 head, stock ECU, wide open Stock Intake manifold, and stock throttle body, he put down about 230 HP to the wheels... with a PFinder TB you are looking at gain of .10mm, and with a '00 VI and upgraded ECU with raised rev limited low 13s and 245-255 fwhp is likely... and that's ALL MOTOR.

Okay so lets say... 3.5 with 3.0 heads, Pathfinder TB, 00 VI, raised ECU, 00 or 01 5 speed.. how much $$$ are we talking? Thats more than halfway into boost without the problems... V2 atleast. You can PM me a price if you dont wanna let out any numbers, I wont tell :igor&donk

It may cost as much but it will still run as good. look at the power all motor guys are putting down and the times they are running, then look at the boosted guys. At 2k rpm with the VI open i put down almost 200tq

i have a PF throttle body for sale.... its in the 4th gen for sale forum

They are in route....21st they will be there

:hyper: :hyper: :woot2:

Are there any real disadvantages to running a 11.5:1 compression ratio, other than 93+ fuel (which I can get here), and no boost?

i woudl juyst do a full 3.5 swap with ECU....if u can afford to have ur car down for his swap....u can last the full 3.5 swap with ECU......sure wiring will be a ***** but all u gotta do is take ur time get some wire diagrams and match them up.......or i could be just talking out of my ***......but hey

Yeah and the price of a donor car. Which at my cost is 2-3k if the car is completely screwed but then your risking parts not working or being broke. Then labor price to do the wiring and install.

Well I think the main disadvantage of having an 11.5:1 comp is no FI. Now having to use only 93+ to me is no prob I've never put anything lower than that before, maximas need premium fuel for optimum performance anyways.
To answer your question IMO there is no disadvantages in this setup. It's really easy to do, cost, the power you gain and reliability speaks for itself.
Oh and there's plenty of room for :nx: with the aid of a walbro pump and APR.

Hybrid with basic boltons yields substantial gains and some....
:happyface

Harris stock 3.0 springs are better than 3.5 stock springs

Yeah how? Better material?

This is giving me an incentive to really think about this swap... Honestly I'm very confused right now. I love my Max and all but I'm ready to put down money for my 02 Firebird WS6... but if I do get the bird, I wont be modding the Max. She'll still be around though.

I just think a 13 second all motor 4th gen maxima is very impressive. I'm sure 12's wouldnt be too far away.

Nealoc187 ran a 13.9@98 with just an MEVI, y-pipe, and intake. No ECU or throttle body.

VQDriver runs 14.0s@98mph with a y-pipe, intake, UDP, catback, and ECU.

As for "torque monster", Tilley's 3.5/3.0 is putting down ~205wtq which is about 5wtq more than the MEVI/JWT ECU 5 speed owners are seeing.

But with an larger TB, and tuned ECU (tuned to 11.5:1 CR), and '00 VI I'm sure he'll be up around 225-235WTQ.

You know I do agree with you, but you see I did not necessarily want to go the FI route because of reliability (my main concern) and the fact that it costs a lot of $. I just want something that's decently fast, even low 14s high 13s I'll be happy with. I'm not looking to be the fastest, rather I'm looking to be fast, maybe not TT Grand National fast but respectable atleast you know what I mean? 226whp with his mods is very good for me, that's about 250 or so to the motor. My mods will end here, except for building tranny, I'm just going to get the .70MM TB, '00 VI, Hybrid, and ECU (once I save up the $). I hope to put down atleast 235-240 or so that would make me happy. Plus I'll basically have a brand new car/motor, that'll last me many miles, my only tuning would consist of the ECU. I don't mind the high CRatio because I can get 94 over here, and I won't go FI or NOS if I have a N/A hybrid that's capable of running high 13s. You mentioned Nealoc VQDriver and others what do you think they would run with a hybrid low 13s maybe? High 12s?

I understand what you're saying. Why not just do the 00 VI, ECU, and slicks and see where gets you? I just watched BSwithTF dyno his auto 95 GXE with the 00 VI and he made 193whp/193wtq. He made ~10whp/10wtq over his MEVI. His other mods are the JWT ECU, y-pipe, UDP, 2001 muffler, no resonator. With a 5 speed, the numbers would be more along the lines of 215whp/210wtq.

Right but 193 is decent with the 3.5 bottem I'm probably going to get 220-225 if not more... plus it's the fact that I have a basically brand new motor.

i like the idea of having a great n/a car but for some reason the sound of a bov just gives me chills

OK OLD THREAD.....but why not use 3.5 heads on 3.0 bottom end without the VTC.....the heads prolly flow better than 3.0 heads even without VTC