Holset user thread

[Dave926]

How well does the HX35 fit the VR6's characteristics?

I would think similar to a 50 trim on a vr6, maybe a bit over 3 k for spool.

[ade007]

I would think similar to a 50 trim on a vr6, maybe a bit over 3 k for spool.

2400rpm = 1psi 3300rpm = 20psi with 12cm hotside

[Nasty Vr6]

Dam that's quick spool

[Dave926]

I found a user on here by the name of "G60 Scuzz." He ran a hx30 on his bone stock PG corrado and made 285whp @ 24 psi. I think 300 whp for me is no prob, considering that i'm running a 16v and I have the same holset actuator for some shenanigans

[Dave926]

Thats faster than the .63 50 trim my friend had on his vr6. All it could do was 10 psi at 3300 or so.

Watching the tach, boost and road in a vrt was never easy

[1098lover]

I have a hx-35 on a 12v vr6 with a front mount and c2 42# software
10psi at 3200ish





http://www.youtube.com/watch?v=tENxPqzYzHo

[magner]

I have a hx-35 on a 12v vr6 with a front mount and c2 42# software
10psi at 3200ish

what hx35 do you have 6/7/ or 8 blade compressor ?

have you tried any other turbo on ur car to compare the differnces ?

i read they dont come into there efficiency range till past 20psi ??

[Matt1023]

what hx35 do you have 6/7/ or 8 blade compressor ?

have you tried any other turbo on ur car to compare the differnces ?

i read they dont come into there efficiency range till past 20psi ??

Ive read there are different 6/7/8 blade compressors depending on year of the turbo, any specific compressor better than the other?

[Dave926]

All the information regarding compressor efficiency and what blade compressors are the best is all on the first page

[1098lover]

I think it is a 8 blade wheel. Im told that that turbo is good for much more than 15psi but I am pretty sure that I will F#** something up if I run much more than that on a stock motor.

[Pat @ Pitt Soundworks]

Holsets are efficient at over 30 psi above atm

[Quintin@R.A.I.]

My 8v dyno'd today...

373whp
367wtq

25psi HX35 (54mm 7blade compressor)

Mustang dyno...

vids/pics up soon...

[Dave926]

what happened to usrt quintin.

Holy **** btw. There is still 10 psi left in that turbo, but i think at 35 psi the head will lift

[Quintin@R.A.I.]

what happened to usrt quintin.

Holy **** btw. There is still 10 psi left in that turbo, but i think at 35 psi the head will lift

i was only with USRT as a side gig helping out...Full time i was Asst Manager at Advance Auto then came to work here at RAI and can't do both.

[obdONE]

Hey all, I hope to be a member of the Holset bandwagon soon. Looking to buy the hx35 that's in the classifieds right now. hx35 with an 18cm compressor housing. going on a 12v.

any advice for starting out?


This is a fantastic thread, btw. Thanks so much for all the info posted up.

[Pat @ Pitt Soundworks]

hx35 is roughly equal to a a GT30R, so go get 'em.

[Quintin@R.A.I.]

hx35 is roughly equal to a a GT30R, so go get 'em.

depending on which one outta the hundreds of models you get...mine came off a bus and is roughly equal to a t3/t4 50trim

[obdONE]

18cm compressor housing
4" inlet
2.5" v-band out
3" v-band hot side

if that helps at all...

[Pat @ Pitt Soundworks]

depending on which one outta the hundreds of models you get...mine came off a bus and is roughly equal to a t3/t4 50trim

It's what, 6 lb/min difference between a 7blade and 8blade - ignoring all the vgt ones?

[Quintin@R.A.I.]

It's what, 6 lb/min difference between a 7blade and 8blade - ignoring all the vgt ones?

that's what they say...but see my 8blade measured 56mm inducer 82mm exducer... the 7blade measured 54mm inducer and 76.2mm exducer...so i bet the flow is about equal.

BTW are you coming to h2o???

[Pat @ Pitt Soundworks]

When is it?

[Quintin@R.A.I.]

When is it?

ummmm... THIS WEEKEND FOO!

[Pat @ Pitt Soundworks]

Meh, I thought I missed it. If it's this weekend, no. I already made plans to go out. I was hoping to take the scirocco to the event but I still can't get the oil to stop leaking so I've given up on that.

[Quintin@R.A.I.]

Meh, I thought I missed it. If it's this weekend, no. I already made plans to go out. I was hoping to take the scirocco to the event but I still can't get the oil to stop leaking so I've given up on that.

get down there! so i can meet you and give you your ecu!

[Pat @ Pitt Soundworks]

send it with the 20v head flange. I have a compound turbo system to build.

Now to decide. for the small charger do I want a 3071R or a small16g LOL

[Quintin@R.A.I.]

send it with the 28v head flange. I have a compound turbo system to build.

Now to decide. for the small charger do I want a 3071R or a small16g LOL

28v huh? sounds interesting... and you want the evo3 16g ya pansy.

[Pat @ Pitt Soundworks]

typo, my bad. My concern is the 16g compressor housing won't flow enough for compounding with the hx52. I know the .63ar 3071 housing will flow well enough. I know the small16g is a 300is hp turbo, the big 16g is a 350ish turbo (at the cost of much later spool), but what sizes are the turbine housings?

[Quintin@R.A.I.]

typo, my bad. My concern is the 16g compressor housing won't flow enough for compounding with the hx52. I know the .63ar 3071 housing will flow well enough. I know the small16g is a 300is hp turbo, the big 16g is a 350ish turbo (at the cost of much later spool), but what sizes are the turbine housings?

it's a TD05H turbine...the evo3 compressor will flow enough.

[Pat @ Pitt Soundworks]

I don't know what that means.

[Quintin@R.A.I.]

I don't know what that means.

gOoGlE is yo friend.

[Pat @ Pitt Soundworks]

I like it better when you tell me.

It actually would be nice if you weren't the only VW guy to run a 16G.

I know I've swapped a small 16g for a 20g before and it's not too big.

[Richard_Cranium]

Q.....

got some partz donated for the rabbit.

3.0L V6 Audi FULL LONG BLOCK MOTOR with complete harness and all.

along with motor, a BIG Holset VGT turbo. the same turbo doing WELL on the I-5 2.2L Audi motor in the Audi car.....

oh yeah, and a VEMS Ecu, too.

so you think its worth pursuing a RWD mid engine build with this stuff? or should i still go ABF clone etc?

we been doin some playin with the VGT stuff, and we have some sort of method to it. and its working....

HOLLA!!!!!

[Pat @ Pitt Soundworks]

You can donate some parts to me.....

I got me the evo3 16g on the way. Time to start building.

[Richard_Cranium]

this is one of my friends I-5 Audi setups.....

he is the one providing me with parts for the other race car....

[KubotaPowered]

How are you controlling the vanes in the turbo or are they open all the time?