doctorotor93

iTrader: (10)

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boostaholic_13b

iTrader: (-2)

Would a 35/40 hybrid with 19cm^2 exhaust housing run out of breath on the top end or would it pull a linear pull?

808SAM

Aloha fellahs
I own a diesel repair shop in Hawaii and also tinker with drift cars..just scored to FCs a S5 vert n/a and an S4 n/a.anyways I'm building the S5 right now I'm a newbie to the game but charged a couple piston cars in the past..I'm still collecting parts from friends here and there. I will be using an HX40 in my build I'll let you guys know how it turns out.any tech info on my build would be greatly appreciated.

NoPistons!

iTrader: (3)

I haz diz. Took me long enough. I WILL be trying to find a larger hotside but this one will work for now. WIth any luck i'll be back in here to post a little more.

boostaholic_13b

iTrader: (-2)

Would a hx40 be ok for a s4 na block? with a 19cm^2 exhaust housing?

NoPistons!

iTrader: (3)

No idea. Try it and see! That's what i'm doing. I'm thinking my hot side is too small but only time will tell. The engine i'm using it on is a "throw away" as soon as i have no2 thrash car.

100_2546.jpg?t=1306213686 A shot i took before i pulled the exhaust mani and intake to give me manifold ideas. Looks pretty small compared to what most run. I have a 12cm housing on mine which translates roughly into a .89 a/r (which is fine for what i want. Instant boost) and a 19cm housing translates into a 1.37 a/r which will have less backpressure, less heat. Bit more margin to tune with. Uh, i have no idea where your boost would come on because i'm just not into doing homework on such big snails on brotaries but full boost is going to take a while and your powerband is going to be up there in the rev range.

And here is your compressor map:

Xeros

the hx35 when comparing maps and spool, is pretty much a garrett 30R.Only it spools quicker and flows a bit more...You'll see a comparison of it on the DSM forum. a 40 is pretty much a 35R..I'm doing a 9.7:1 mild street port build in my FD with an HX35 8 blade fueled by E85. My goal is close to stock twins performance and around 350-375 rwhp. I will then see if I can push up to 425 with pre turbo and port water injection. If it ends up choking up top I will see how a 40 feels or if I can get a 35/40 hybrid and billet wheel going later down the line.

I'm really thinking it should turn out something like this guys.
https://www.rx7club.com/single-turbo-rx-7s-23/autox-fd-dyno-956766/

boostaholic_13b

iTrader: (-2)

I think a 12cm^2 or 14cm^2 would be better suited for me I am currently building my s4 n/a keg for my first gen... going to try out some busa throttle bodies with a haltech... hoping for the best....