Re: Opinions on the Holset HX40 Turbo
 

I am kinda worried I'll buy a Holset and it will be a big POS. I am starting not to want to spend $1500 just on the turbo (FP 3065). I dont know what to do! The Holset from what I've read seems great! But thats the key;what I READ.

Re: Opinions on the Holset HX40 Turbo
 

Follow the pack, lead the pack, or be a stray and get picked off by the wolves. Pick your poison. With just about every turbo out there someone has built a car that preforms to the best, average and worst of it's capability. Try and be one of the first two. :D

Re: Opinions on the Holset HX40 Turbo
 

Get a SCM61BB and call it good.

Re: Opinions on the Holset HX40 Turbo
 

Well, you have dynographs, logs, and videos. Other than actually running any turbo yourself, what other way do you have to make your decision.

The first video posted was of the bolton hx40 2.0L car going 11.08, 13 degrees peak timing, stock exhaust manifold, stock weight.

Hx35:

Here's now a second video. ford 2.3 guys are happy to get 90% VE with major head work and a very aggresive cam. It's safe to say that the 2valve ford 2.3 doesn't have the same advantages as the 4g63, even though it is .3 L larger, from my personal experience with my T-bird TC. Stock SMALL 12cm^2 turbine housing, each volute is the size of 6cm^2 14b volute. Divided runner manifold makes sure that each exhaust pulse only sees a 6cm^2 volute. 585hp @28psi on an engine dyno:

http://www.youtube.com/watch?v=Fv1-omYCb9c

Comparison logs of my holset h1c (same turbine wheel as the hx35, 2mm smaller compressor inducer) vs. my small 16g to show the spool speed.

Add these to the dyno graphs and track results on tuners with the bolton hx35.

HX40:

Compilation video of the dyno session of the 653whp hx40 w/ .55 a/r housing. You also get a great view of how fast it spools on the street. Non-billet 60mm hx40:

http://www.youtube.com/watch?v=PMC2nPrbJvs

Datalogs of the hx40 in the bep housing showing spool speed. Stock Block/Head/Intake mani, BC272, FP Race Mani, FP Intake, 3" DP w/ 3" Cutout, over 50lb/min at 26psi. 20psi by 3900rpms. You can easily see how it can flow 60ish lb/min at 35psi.

Add these to the dyno graphs and track results on tuners with the bolton hx40.

If you don't have dsmlink, here's the above log:

Re: Opinions on the Holset HX40 Turbo
 

WOW that thing spooled up quick! Much faster than I thought.. To me the hx40 with the .55 a/r housing sounds like the way to go!

Re: Opinions on the Holset HX40 Turbo
 

What kind of boost are people able to hold to redline in these small internal gated bolt on housings?

Re: Opinions on the Holset HX40 Turbo
 

Well said!:mj:

Re: Opinions on the Holset HX40 Turbo
 

They are priced right, but I don't think it'd spool up by 4k on my stockish 2L with 272s.

I was thinking about the HX35 with the "shitty BEP housing" but where can I get an HX40 with a billet compressor wheel?

Re: Opinions on the Holset HX40 Turbo
 

I also thought I heard a rumor that the housings are getting hard to find as vendors are starting to run out. Might want to check into that.

Re: Opinions on the Holset HX40 Turbo
 

Yes you are correct. But to be serious why are we still hassling wheelhop?

-These turbos are cheap because they have avoided the "STREET RACING" mark up!
-They will last. They are running on diesel trucks with hundreds of thousands of miles.
-thousands of people use them on their gas race cars, and just google for ten minutes and you will have the proof.
-It's hard to answer all these questions about spool and specifications because there are MANY combinations and new ones being made constantly.
-Would you like a variable geometry turbo on your dsm? talk to this dude. http://www.homemadeturbo.com/forum/i...?topic=96770.0


I now have chosen my brand turbo for my build.

Re: Opinions on the Holset HX40 Turbo
 

NOpe. The carbon steel ones. But the SS ones are not. They look much better than my rusty a$$ housing.



...The difference between us and a herd of wildebeasts is our ability to reason our way away from the cliff. There's nothing wrong with any turbo that achieves your goal, no matter how many choose a particular brand. You don't HAVE to act like an animal. Good thing no one holds it against one if he/she does. Another human trait.

Re: Opinions on the Holset HX40 Turbo
 

I hope you're going for an hx40 with the bep housing. the hx35/40 with the bep housing is not going to do what the scm6176 will do. I doubt the suggester even knows what the hx35 turbine wheel is capable of with certain a/r. However, I don't know many who chose the p-trim wheel (scm 6176) and look for a bolton situation. In such case where bolton friendly is most important, along with spool speed, the hx35/40 with the bolton housing will compare well for flow and outspool the scm6152.

If you're looking at the best flowing scm61, I suggest the straight hx40. It spools to 20+ psi before 4100rpms and flows as much as the scm6176. There isn't an scm6176 user that can claim that spool speed and the same results at the wheels.

Re: Opinions on the Holset HX40 Turbo
 

Wheelhop, do you work for Bullseye?

Re: Opinions on the Holset HX40 Turbo
 

Hmm, I was fine with the ~4000 spool of C3L1CA's FP3065, that's kinda what I was wanting. My old car had a Buschur 20G, it would spool around 3600!
My goal honestly would be that magic 400awhp on a dyno dynamics with E85 on a stockish 2.0L. I also don't like the idea of buying a turbo twice. 4000rpm spool is ok with me. Suggestions everyone?

I was thinking
Holset HX35 with BEP .55 BRAND NEW
or HX40
FP3065

...uh thats it...

Re: Opinions on the Holset HX40 Turbo
 

E3 16G + 75 shot?

Re: Opinions on the Holset HX40 Turbo
 

You could reach that goal with a 50trim on E85. If you're bent on going Holset, then just find one that flows a similar amount of air as a 50trim.

Re: Opinions on the Holset HX40 Turbo
 

haha, Yeah, but I want something I can get more out of later.

Re: Opinions on the Holset HX40 Turbo
 

Come on Kevin.. Just go with the hx40 with the .55a/r. Just watch the end of wheelhop's video.. That thing spools fast as hell for what it's capable of. I don't really see how there is this much debate about it. And same to you Kerry!

Re: Opinions on the Holset HX40 Turbo
 

Why is my name brought up again? Kevin ride in my car and tell me if you like the BB scm6152, you will!

Re: Opinions on the Holset HX40 Turbo
 

Hx40 w/ bep .55 a/r housing will spool 20+ psi by 4Kish. The hx35 will do 400awhp easily especially with e-85. And give you more room. But you may want more room than 500whp, right? It depends on how much head room you want really.