Bwek

iTrader: (4)

hey guys im looking at picking up a turbo off a fellow rx7 owner on the board for a good price

Im running an S5 n/a keg with all the turbo 2 stuff swapped on right now its all stock stuff with an emanage helping to run it all

I'd like to make more power and love the High comp turbo so far

I am looking to get this turbo but would the 14cm exhaust housing choke power up top?

I am going full standalone (megasquirt) along with water injection and V-mount and obviously pump,regulator and I was thinking along the lines of 1200cc secondaries and 500cc primaries

My goal is around 350whp with the broadest power band possible I'm not concerned with peak power... thats only for dyno queens lol

junito1

COrrect me if im wrong SOmeone.

But the 20g greddy turbo kit for Fc3's came with a 19cm, I think. ( disregard msg if this is wrong)

I was rated at 400 hp capable. But many since have said the greddy turbo was a bit small.

bc_fd3s

iTrader: (2)

14cm is going to be tiny. Not much gains over stock. It would make the same difference as going to a hybrid.

StavFC

Im not as convinced as others to be honest, and still havent seen anyone who has actually TRIED a 35 on a 13B yet, which is a main thing.

Turbine housing size is only one thing, people forget, just like compressor wheels, turbine wheels flow very different amounts for their size, depending on design.

Ive played with 35s on other cars, mostly 2litre 4pots, and even a 12cm housing seems to flow (going by backpressure readings etc) as well as a 1.05 housing GT35, which I can only really put down to the turbine wheel.

Even on a 5litre, where even I was convinced itd be way too small, someone tried one and it pulled as well at high rpm and gave as little backpressure as when they was running twin .63 housing T3s.

Personally, my gut feeling if I had one to go on would be to go for it and expect it to be similar to a GT35, but its a risk the same as anything else untried.

bc_fd3s

iTrader: (2)

do you have a compressor map

Chaotic_FC

After looking into this turbo a bit more i learn't a few things..
according to a common equation, a 14cm housing should be the equivelent to a .98 A.R.. I'm not too sure how accurate that is, but this turbo was orrigionally intended for a big diesel truck.. It probably has pretty good spool characteristics... it can be compaired to a gt35 in size, and power.

there is no real way to tell though without seeing what it actually does on a 13b. hopefully somebody will chime in with evidence of a hx35 13b.

junito1

ok i looked up the gregdy kit again.

They say the its a 20g Td06 - 16cm(squared)
This is the 420 rated turbo kit.

The larger 25g had the 19cm - 17cm squared.


Ill go a far to say that the old mitsubishi turbos were nicer than the old Borg warners.

Bwek

iTrader: (4)

I really dont mind trying something new i just dont really want to waste my time esp if someone has already tried it once

im really curious about it and may just try it anyway not really losing alot of money to try it

Chaotic_FC

then go for it

Bwek

iTrader: (4)

StavFC

Totally depends what HX35 you got too.

3 different compressors, 8 blade, 7 blade, 6 blade (IIRC 6 blade is billet too, or sometimes, i forget now).

8 blade compressor seems to be good (on a piston engine) for 500-550bhp, 7 blade is good for around 100bhp more (slightly larger inducer and exducer, as well as 1 less blade), and 6 blade, well im not sure, similar to 7 I hear, but enver used one myself.

All T3 flange though IIRC (divided mind) so make sure you got the right manifold.

Chaotic_FC

^ have you ever used one on a rotary?

StavFC

No, seems nobody has! But know from piston engine experience turbine flow-wise a 12cm seems to be at least on par with a T3 flange 1.05 GT35 (wether thats housing or wheel making that happen, no idea), so id love to see how they actually performed on a rotary.

Tatakai

iTrader: (2)

i've been trying to find info on the hx35 + rotary, but haven't been able to find much.

from what i've found, there's no reason why they shouldn't be awesome. cheap, built to last, quick spool and very wide efficiency range.

im hoping to make 300-400whp with this turbo on my stock port 13b-re. i'm building this setup for drifting, so quick response is the goal. i'll definitely be doing a lot of testing- i have near unlimited access to a dynojet.

hkp

iTrader: (2)

i had a 16cm hx52 on my last build, it spooled fine, i would try the 14 and see how it goes.

catch-22

iTrader: (2)

I run a WH1E with a T4 footprint. 15 pounds before 3500rpm with a 26cm^2 housing i believe.

NoPistons!

iTrader: (3)

HX35 8 blade - 52lb/min
HX35 56mm 7 Blade - 60lb/min


Yes, i dabble in holsets.

I'm not baller enough for garrett/hks ect.....

I'd go with either or. You can pony up another $30-100 for a 16cm housing and probably make your money back selling the 14cm housing.

Should spool up fine and have good response on a high compression motor. If i were you, i'd give the 14cm housing a go for a bit, swap to the 16cm housing and see which one suits your driving better. 14cm housing sounds like insta boost to me.


Oh, and i remember this huge debate that started somewhere. I was part of it. People were telling me rotary egt's were going to eat the turbine wheel all to hell and yada-yada. Holset turbos are used in big *** trucks that drive across the country ON BOOST ALL DAY LONG. People who snub their noses at them are just ignorant and believe paying $1200-2000 for a turbo is the way to go.

junito1

^^ i spent near 900 for a BNR 4 and i will never do it agin. Since i realized i coulda gotten an s400 borg warner for the same price..

just startn

iTrader: (33)

I HAVE A HX35W ON MY CAR! Theres pics of it floating around all over this forum.

I know alot about holsets and such i suppose. Mine is a 8/12 blade combo straight off the 99stick shift cummins. Mostly all holsets are internal gated but you can block it off and run xternal as i did. Holsets flow very very well and out spool most turbos. I know alot about these turbos from piston engines as i have done alot of holset builds with billet wheels, hybrid hx35/40 combos and some aftermarket housings. I didnt get to do to much with the 35w on my car due to the oil seals in the turbo took a crap and coverd everythign in oil. The turbo is getting rebuilt and put on my brothers 300zx. All hx35 are t3 foot prints. My opinion on the hx35w is dont run it on a rotary. skip straight to the hx40..... As of right now im putting a holset
H2C on my car and i never have put this turbo on any kind of engine. its big! Holsets are mainly used on 4g63's and 300zx's. In not to long i will be doing a front faceing hx40 hybrid with a goal of 650whp on a 4g63.

here are some good links all for piston engines but will tell you everything about each holset.

http://www.dsmtuners.com/forums/turb...-part-7-a.html

http://www.dsmtuners.com/forums/turb...bo-brands.html

http://www.z31performance.com/forum/....php?f=1&t=249

just startn

iTrader: (33)

My car with the 35w
https://www.rx7club.com/2nd-generation-non-technical-pictures-198/post-some-pics-your-fc-d-pics-your-car-go-thread-804775/page77/
post #1530

just startn

iTrader: (33)

I hope this thread Blooms and makes some people get these turbos and try many combos. This will make alot of people understand you dont have to spend 1000k+ in order to get 14+psi by 4000 rpms on a decent size journal bearing turbo.. My ideal holset for a 13b 4 port street ported motor is a hybridish Hx40 550whp, easy see 20psi by 4000 with a nice manifold and a good tuner behind the wheel of course,

12AllWays

iTrader: (20)

So a hx35 off of a stock 96 truck would be too small on the turbine side to get 400hp?

SmogSUX

iTrader: (12)

Running a Holset HX40 with the 19cm^2 hotside. See full boost (15psi around 3500rpms) Can't beat it

12AllWays

iTrader: (20)

Is that a t3 or t4 flange on your hx40? Are you stock ported? Want to sell your turbo, manifold, wg setup?

SmogSUX

iTrader: (12)

Super tiny street port, T4, and no. I just installed the setup lol you can replicate it cheap.

shookmotorsports.com is where I got the mani, and he custom fabbed me an exhaust too.