truth....

there are a few maps floating around for holsets, wantboost and the shodan probably know best but iirc they are approximate maps or guestimates...I don't even know if holset was the one who pumped them out

 

Holset has maps, most are internal and confidential. Holset only publishes maps in a big book for authorised dealers, TheShodan should have one IIRC. I'll see if I can dig up a map somewhere.

 

right I know they have maps...its about releasing them...

iirc there is one hx35 map out there...even though there are a couple/few different varients of the turbo. 7blade/8blade/ h1c etc

 

Anyone know if there are fitment issues with a inlinepro t3 and holset h1c using the .63 housing from tims turbos. I think it should be ok but figured i check.

Nevermind picked up a miniram instead.

 

What's max power of a large h1c? Made 416 on 24 lbs but I'm wondering if could push it further?

 

About 450whp for the H1C. that's about it.. And that's with optimal conditions.

 

What other holset would work? I know the 35 is pretty much same turbo besides v band. Looking between 450-500. Hx35/40?

 

An HX35/40 is optimal, with the 8-blade compressor wheel with at least 10cm would work for the 450whp. That's if you must stay Holset.

The "B" is considered to be the HX35/40 in the HX40 class



For more towards 500whp-650whp, I'd just do HX40, if you must stay Holset.



Some comparisons of Garrett sizes against the Holset comparable sizes

 

I'm on a 7 blade hx35 and I made 481 at 20 pounds of boost. That's with a 12cm housing

 

What'd your setup with that? It could still push a couple more psi outta that couldn't you?

 

Stock bore lsvtec, ported Gsr head and stock Gsr cams. Victorx intake manifold, top mount turbo manifold, those numbers were open down pipe. FIC 2150's running on e85

 

My understanding was the 7 blade could get close to mid 500s

 

I've heard that as well, I'm running 25lbs of boost now but haven't had it on the dyno. Should be a bit over 500 I'm guessing

 

Im gonna be running an h1c/b16 myself. Just gotta get a housing for it. Try n find a garrett housing for cheap and have it machined or just order the ready to go one from tims turbo.

 

Get the one from Tim's... It takes a lot to machine those to fit. And they do those in bulk, so the cost becomes a bit more reasonable for those attempting to do this.

 

More then likely thats the route. Turbo lab quoted me 100 to machine a garrett housing if i can find one. Havnt been able to find one cheap enough to justify not just ordering the tims turbo one. Either way all my car purchases are on hold till after my vacation in sept unfortunately.

 

And you won't. Those housings are good quality. But $100 is about right.

 

Scooped a 12cm housing for $55 on ebay!!!!!

 

I have my holset he351cw w/cast top mount and 3" down pipe and dump tube setup I'm trying to sell if anyone needs a ready to go setup

 

How much? What engine is the manifold for?

 

U know a soon as I posted this, it sold a couple hours later. I had it for either engine. Had both the d series spa top mount and b series spa top mount. All I have left is the b series manifold cast top mount

 

Ive got a holset h1c and 12cm housing for sale. Pm if interested.

 

anyone interested in an H1E? 18cm housing, 8 blade compressor wheel 12 blade exhaust, essentially an older version of the hx40 from what ive seen.

 

hey guys just got an hx35 for my h22, tying to make at least 420whp, i got the the turbo from some guy here my area and he said it was rebuilt and it sat for a while, turbo has no shaft play and looked real clean, my only concern is that doesnt spin freely all the way, here's a video below..

 

No, contact with housing isn't normal. Shaft bent maybe.
Not good. gonna have to have it checked out inside.
How much did u pay?