Pls help with, "which turbo" question
 

Hi guys,

I have been doing my share of research and i need help deciding which route to go. My current set up is as follows;

Pettit Upgraded ECU
NGK 9's
Magnecor Wire's
Apexi AVC-R
M2 Downpipe
HKS Carbon TI
Greddy SMIC
Greddy Intake
Upgraded Ground wires

I plan on going single within two-three months and i need to start finalizing what i am going to buy.

the turbo options that i have narrowed down to is;
to4e
to4s
rx6
gt35

now of those any recommendations on which would be better for a stock ported motor.

I also know i will need the following;
Fuel pump (on its way)
apexi pfc (getting it next)
larger intercooler (going FMIC)
larger injectors (i could use your help in choosing brand & size)
of course tuning.

As for the injectors I am planing on 850's and 1300's <--- will that be okay?



Any recommendations would be appreciated. Oh and I will be running on pump gas of 91 octane (i know thats crap, but its all i got here in CA.)
My RWHP goal is approx 400.

thanks

ian

any of the turbos you listed above will acieve the power you are looking to get.
For Best responce I would look at the GT35R turbocharger. Allthough it does respond faster you will most likely have to push the turbo a little more than the rest of the ones yo mentioned.
The T04E 1.15 A/R with a ptrim turbine wheel and a .70 compressor assembly will net you 400hp at approximately 15-17 psi.
The other two T04S and the RX6 I have no information for but I am sure someone else on here will be able to help you out.

^ thank for the rply. i figured they would all get the job done as far as goals. i guess more of my question would fall in which set up would be more "ideal" for a stock port motor and which injectors to run.

i woul love some feedback on any similar setups.

thanks in advance!

for injectors any of the following should be able to do it,
850 primaries / 1300 secondaries
550 primaries / 1600 secondaries
720 primaries / 1600 secondaries

Those would be the most likely of combinations for that power level. (of course there are many others)

thanks again....

i like the second option 550/ 1600!

i want to achieve my goal safely. i also a little room to grow. i dont think i will be going over 15 psi on pump and i will run at the most 18 psi with a little race gas....

that doesn't chg the injector options right?

with the numbers you just posted depending on flow of the turbo you should not have to change the injectors for an extra 3psi. so I wouldn't worry about it too much.

I'm quite sure you will need around 20psi boost in a T04E (57-trim or 60-trim) to get 400rwhp with stock ports. I would scratch that off your list if you are looking for 400rwhp @ 15psi with 91 octane pump gas.

The Rx6 is pretty much right in-between a T04E and T04S. However, reaching your goal on stock ports and pump gas again, might not be possible.

The T04S and GT35R should both flow enough for 400rwhp @ 15psi boost on stock 13brew ports. The GT35R should have a slightly faster spool, and is probably a better choice. However, a T04S is able to be rebuilt (should anything ever happen to your turbo) cheaply.

550/1600 injector combo should be enough fuel for near 450rwhp. What fuel pump will you be running?

thank you. very informative!!!!
i am planning the Nippondenso as my fuel pump... good idea?

https://www.rx7club.com/showthread.p...highlight=t04e

Check out that thread... pretty informative actually!
So based on some of the posts in there 400rwhp at 17 psi on a t04e is definitely esily done.
Also I believe maxthe7man's dyno was done at about 3800' above sea level.
The GT35R on a couple of threads I have read had about 380hp at 15psi... so it needs a little more umpf to get it up there!

I agree with Infini IV. The T04S and the GT35R are very similar, but I think that the T04S will be much easier to rebuild (and is probably cheaper to buy too).

My T04S made 406 rwhp at 14 PSI on pump gas. I have a street port and 550/1600 injectors.

pt61!! =] im making about 475rwhp with a pt61 (gt35r compressor wheel) on my stock port s5 motor.

thanks for the info guys...

because of this thread i am now leaning more to a to4s
does anyone know about the HKS kit....


before you tell me its over priced, i will let you know now i can get an insde deal (i hope) on hks products....

i think i will be getting the

HKS TO4S (if approved)
HKS FMIC
HKS Twin Power

Pt61!!!

why dont you tell me about your gt35r kit?

what do you want to know? If it's pricing, check with www.rx7store.net

Any other questions I'd be happy to answer

I was just wondering why you would suggest the Pt61 rather then the kits you are making.




to everyone else,

still wondering about the HKS kit.. i have heard some of their kits do not come as complete as others. anyone have experience?

the pt61 is basically a gt35r without ball bearing.

same compressor wheel

If that is tghe case, then how do you expect to get 475 out of the PT61? There are no 475rwhp 35R 13Bt cars that have ever been posted here, and not for a lack of trying. btw. Not to mention, that is witha 1.06 hotside, compared to your .96, what gives?

I also made 427 on the smallest gt40 at 17psi. i stepped up to a larger turbo, which i can feel has more power at same boost levels, and raised the boost 3 psi.

O'k, but still it is true that nobody has made , and posted a 475rwhp dyno of a 35R at any PSI...

ill post my numbers with the pt61 tomorrow when i dyno.

what do you guys think about a to4r in my case. will it spool up quiker then the s? how much hp does the r run in comparisson to the s?

thanks

a to4r is a 67mm compressor. its a large turbo like a t66.

i thought the r was smaller then the s????

negative, to4r is a 67mm compressor.