T3/T4 same as HY35?

[turbo minivan]

what are the size difforences between a T3/T4 and an HY/HX 35? i read some place they are practicly identicle as for A/R ratios and such. also, is it true that an HY-35 will bolt right up to a T3 exhaust manifold flange?

[daytonajesse]

Well it depends on what T3/T4 your talking about. I dont think the turbos are alike at all, but I dont have either to compare so take that how you want to.

[xtrempickup]

quite different and the Holset is larger than a T3/T4 we might run on an 8v

[Will Martin]

Here's a picture of a Holset (I think it's an HY 35), a Precision T3/T4 ceramic dbb 50 trim stage III turbo, and a .48 T3/T4 stage III turbo. Notice how big the turbine housing is on the Holset.

[xrattiracer]

thats not a HY. easy to tell though by looking into the turbine inlet. if its split scroll, then its no an HY. They are certainly larger than a T3 hot side, but not by a huge amount.

[Will Martin]

Okay then, it's not an HY. HC maybe? All I know is that it's a freakin' Holset and it's huge. The person running it was running 10's so it got his car that fast and it worked. I've since sold it so I can't remember which series it was.

[R/Tony]

Quote:

Originally Posted by turbo minivan is it true that an HY-35 will bolt right up to a T3 exhaust manifold flange?

Its true... at least the HY35 has a T3 flange.


This is my Holset HY35 compared with a KKK (Vag's turbo):

[Andre Parker]

The HX35 and the H1C and WH1C (the only difference on the last two is the W one has a wastegate.) all have the standard T3 flange.

[moparzrule]

Quote:

Originally Posted by Andre' Parker The HX35 and the H1C and WH1C (the only difference on the last two is the W one has a wastegate.) all have the standard T3 flange.

Correct. The HY35 has a considerably smaller turbine section than the HX and h1c's, smaller housing and wheel which makes them a better condidate for four cylinders. The HY35 has a 9cm housing, the HX35 has a 12cm divided housing. The HY35 has a slightly smaller compressor, but I know the HX35 outlflows a 57 trim T4!!! Mopar2ya has also said in a thread in the cummins section that the 9cm housing is equal to about a .7X turbine in garret lingo.
So, get an HY35 for about $200 and use the money you saved on the turbo to get a TU header with T3 flange. Should make for a killer setup. You will need a TU header to run the HY35, the compressor is too large. You probably couldn't run a TU header and HY35 on a L body car either, it would hit the brake booster.