Bryan H

here is the question, sort of.

im looking at a PFI turbo kit, OR making my own. not sure yet.
anywho

GT35r Vs 60-1

max psi 15
aiming for 500 fwhp

yea i know i might eat a tranny, not worried about it

4th gen in question.

i know both turbo's would support this kind of power.

yay and nay reasons excepted.

mtcookson

iTrader: (2)

imo, you can't go wrong with the GT35R. it will cost probably over double the 60-1 but you get all of the newer technology including the ball bearings which will help the down low power quite a bit. i was looking at getting one of these before getting an awesome deal on another turbo.

Nealoc187

iTrader: (23)

If you had to choose between having your compressor most efficient between 4000 and 5500 or 5000 and redline, which would you choose?

Either way if you are going for broke the GT35R is the turbo you want of the choices you listed, I'm just plotting different compressor maps, 71mm vs 76mm GT35, and a few others. So far GT37 with a T04 housing is looking the prettiest, showing you above 78% efficiency from 4000rpm to redline. T04 60-1 has you way out of the optimal efficiency range at 15psi compared to the GT35 and GT37, same with the 62-1.

Another map which maches up very well is the Garrett T58.

Bryan H

more or less the 60-1 is not gonna be happy whatso ever.
hmmmmm

need to do some more digging.

this is begining to look like a supra forum in a sense.
5-600 hp on a stock bottom end.
very interesting.

i myself was actually leaning more towards a gt35. i'll do some more diggin at work

mtcookson

iTrader: (2)

i know the GT35 looked pretty good for my VG, for your VQ it would most likely be even better. just depends on what you want out of the turbo.

you have a Z?

Bryan H

i think the gt35 or 37 with some personal touches will do just fine for the 500 whp range.

yepo, i have a 76 280z

mtcookson

iTrader: (2)

sweeeet! i have a 75 280Z that'll be getting something like a GT42 or something big like that

i think the only downside to the GT37 was that it doesn't have the ball bearing option... i'd have to double check that though.

Bryan H

my 76 has a 3.1 with su's and some other goodies on it. not all that fast, but i guess mid 13's isn't all that bad.

i'll do some more research on the gt series, and see what numbers i can come up with

Bryan H

gt35r is looking pretty right now

hlh0501

iTrader: (1)

at that boost level, I would not get your hopes up too high for 500 (without spray)

Also, I would suggest having your own piping made - especially if you are going with a somewhat larger turbo - you would benefit from better exhaust routing. Also did PFI ever get away from crush-bends?

choray911

iTrader: (1)

The only crush piece now is where the 3" down pipe passes under the tranny. Everything else is mandrel

Bryan H

thats a rough starting point in reference. im sure there would be some routing changes in the initial install of the kit.

the bad thing is, i see all these turbo kits for the max and they all look a like. same placement of the turbo, no one specifies if it is a forward y-pipe design or something else which i haven't seen.

hlh0501

iTrader: (1)

I'm talking about huge changes, such as.. junking the whole feedpipe and making one that routes to the front of the car (and over if you want the turbo over there). Have you by chance seen my turbo max pics?

PFI (routing backwards)


Routed Forwards:


or if you don't mind losing the stuff up front, you can go with two short pipes feeding immediately into the turbo

Bryan H

the only thing i can see that might be a problem with the forward pipe is the front manifold feed, but that can be changed regardless. who's feed pipe is that one? {the second chrome jobby} the turbo is going to placed where the battery is. for ease of getting and changing if i need bigger then a gt35r, which i might in the long run. who knows.

with the forward pipe, what about keeping the stock fans?

i was lookin at pfi's kit, the feed pipe could be shortend, and redone. but the front pipe looks like a better design.

do you have pics of your complete set up? other then pics of it in the car where you can't see anything up the upper ic pipe and t/c

Dave B

You're thinking about turboing my car?

Bryan H

the thought came to mind!
but not likely
there is still two max's in my garage. dad wants a new car as well.

lol
skurrd?
im still undecided on what it would end up being.

we'll discuss more about it