TTC

Hey fellas, im running a 16v 4age 1.6L currently at 220whp at 16psi on a 14b. I want more top end, without sacrificing to much spool since i autox and roadcourse the car. Ive ruled out the $$$ capt. ------- ballertown garretts such as the gt28rs cause I just cant go from a 50 dollar turbo to a 1400$ one. I'm researching the Hy35 and the HY30's, the hy35s seem to be plentiful but i have a feeling even with the 9cm housing they might be a bit to big for my setup. I can't find any info on the hy30 tho, nor have I seen many for sale. When im looking for turbos, i generally compare my motor to the b16 or d16s since they are roughly the same displacement. Im pretty sure my shitbag 14b spools pretty slowley for its tiny *** size and im willing to bet even tho the holesets are bigger they will perfrom the same with the exception of a freight training top end. Im also looking at t3/ t4E's with maybe a .48 or .60 trim, even tho the technology is from the 70s they are cheap and reliable. I don't wanan go the 16g route cause the concensus is that they are unreliable and spool like ----.

So: 275whp or so, with decent spool is the goal here.


An idea off my power delivery atm:



Heres all my math calculuations:




Using my math you can see that u need approx 380-400cfm at 14-18psi with a pressure ratio of 2.22@18psi and 1.95 @ 14psi.

Racintweek

t3/t4 50trim .48 a/r

TTC

Keep in mind my car revs to 8k, so a .60 a/r might work out better, ill have to look at the maps.

seerex

Swap in 4age 20v motor and a Hx-35

TTC

Don't like 20vs im a purist Physically tho the holsets look so freaking huge, and they aren't popular among the non dragracing big power guys which makes me wonder even tho they sound so great, maybe they aren't the right manufacturer for what im looking for.

HiProfile

Its because they weren't indended for gasoline, and I don't mean that in a bad way. There are better choises for power, but per $ they are great. They were designed for decent high flow, not for spool time. Since diesels run at >0psi at idle, they inately spool rather fast. They also need hi-rpm help due to pretty much the entire design. Thus...they have big housings, among other things. If you compair them to a Garrett, the housings are more radial/flat, while Garrett & others are more compact. These turbos are used in large trucks, not FWD compact cars - room is aplenty.



BTW that XML is all fucked up. I see no point where you can corelate 14-18psi working with any numbers remotely close to 380-400. Posting ---- with all calculations, or only the final result - nothing between, as that pic is confusing as hell. 6psi at idle?

TTC

Your missing the calculation im doing by hand to go from cfm to lb.

Eville140

I had a hy35 on a 2.3 ford that I revved to 6700 and it was even a bit slow to spool on it compared to a stage3 .63 hybrid.
I'm running a sc44 (60 trim) hybrid with a stage3 63 housing on my 1.8 toyota 3tc, boost comes on at around 3500rpm and pulls strong past 8000.
We had a holset hc1/hx35 with a 7cm bulseye housing on the same 1.8 and it spool almost instantly.

I doubt you would like the hy on your 1.6 unless it is a drag only machine. A regular old tbird t3 would be a good cheap upgrade and would just about get your goals.

TTC

So your saying an Hy35 or Hx35 with the bullseyes 7cm housing will help the pig spool and still hold boost to redline? Atm my 14b goes down to a measly 7psi at redline. Im at the bullseyes website and i cant find the housings.

Found this , which looks like an interestingly easy bolt on affair:

http://www.dsmtuners.com/parts/produ...roducts_id=816

turbob16hatch

i think i would go for a turbonetics t3 super60, my roommate had one on his z6 and it made 240hp ish on a mustangon 17 lbs.

it was ball bearing and spooled up like crazy, also i think he found it pretty cheap....