Thread: Holset HY35?

Anyone know if a holset hy35 would work on a protech log mani? Trying to get this car boosted again asap. Can't be rockin out with 8.5:1 CR N/A with a side exit.

it will might have to modify some things a little but anything is possible.

I have a top mount so I couldn't tell ya.

There is someone that make DIY log mani kits ( maybe maxworx). You could put that flange where ever it needed to be that way

Depends on what you run on the turbine side I would imagine. With the original turbine on it, I don't know if it would ever hit full boost.

Um so much ignorance. The holsets spool faster than any other turbo I have had. I have full boost on the same turbo by 4500 rpms and it spools just as fast as my t28 btw

first of all a hy35 comes with a 9cm housing which isnt big. a hx35 come with a 12cm housing which is easily spooled up by an sr20. my friend spooled a 16cm housing with his bone stock de with no problems what so ever. holsets are designed to use cold exhaust gasses so when introduced to our high reving engine that output hot exhaust gasses it spools relatively fast for a journal bearing turbo.

YouTube - Twin Scroll HX35 Response and Street Manners

Yeah, I have the 12cm housing on a stock manifold with a T3 flange (open downpipe though and 7 blade compressor) and I would say I had full boost by no later than 4300 RPMs. 3-5th gear pulls are nuts, boost hits like a fuck*ng freight train and I didn't even have a tune. A friend of mine felt a little bit of it and it's definitely fun.

I would say if someone is running a relatively stock motor to use the 9cm housing, but if you have a built bottom end and head work/s4's or a c series cam then go with the 12cm housing. and a twin scroll manifold definitely wouldn't hurt either.

First of all, I was refferencing the HY45. That turbine is huge. It's an older model that I was talking about, and has a 1.14 AR turbine side. A turbine swap to something smaller would be feasible, as a turbine that large would seem to be useless on a street car. Especially a stock to mildly modded sr20.



^^Refer to my post above.