67mm Holset Built by TurboLab of America

[JusMX141]

Thats too bad justin that you didn't get the gains you wanted, i didn't feel i was getting too much farther with mine at 67lb per min on a calibrated SD setup. At 38psi

While we saw as much as 8 or 9 more lb/min than yours at the same boost level, the fact that the power "leveled off" on top end tells me it's 100% the fault of the turbine housing and not the turbo. The turbo itself was doing exactly what we wanted it to.

Figure for a .70 T3-flanged turbine housing to have run an 8.7 with all other turbos having T3 .82 or giant twin-scroll T4 housings is pretty impressive nonetheless. It will be remedied this season for sure.

 

[1SIC1Gb]

So Justin, do you think the bep housing will outflow this 12cm2 housing?

 

[1SIC1Gb]

Haven't updated this in a while! The turbo performed great! Hard to tell on spool rpm since my converter flashes up to about 4k on its own, but I am running right at 40psi which is the max for this little 12cm housing. Car made 625whp on the dyno, but again it's an auto so they always dyno low. For perspective, same dyno, the hx35 in stock form on my car made 399whp at the max. So 225whp gain and the spool seems be about 800rpm slower.

The great thing about this setup is that with just a 35 shot dry I can get on the converter on the foot brake in under 3 seconds.

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The housing is limiting this potential big time, so just to try, I got a 16cm^2 housing and I'm sending it to TurboLab to have them machine it. Very curious to see the spool difference and how much top end power it makes. As you can see from the dyno graph, the cars power band is very good. It's relatively flat from 6k-9500. This is on the gsc s3 cams and Magnus v3 cast intake with a 74mm s90 TB.

 

[1SIC1Gb]

Also here's one of the dyno pulls.

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[1SIC1Gb]

16cm housing came in with a new 3" vband. Boxed up and shipped to TurboLab. Visually compared to the 12cm it looks very very similar on the outside .

 

[familyMAN]

That company (KTS) keeps missing the boat. They made a slight improvement over the wheel he ran last year (66/84mm, 62-trim) by getting the extended tip spec up to 95mm (67/89mm, 57-trim), but there are other billet HX40 compressors out there with a 99mm backplate and 100+mm extended-tip spec....they just don't have the 67mm inducer that KTS does. So KTS has the inducer, and other companies have the exducer I'm looking for.

The factory billet HX52 wheel is 67/99mm. I don't know why it's so difficult for someone to offer that same wheel to fit a HX40 shaft with a smaller hub and improved aero tech. It would sell like hotcakes.

What do you think about the 63mm x 99mm x 103mm Comp wheel that Turbo Lab sells?

 

[bastarddsm]

I think that's the wheel fleece performance uses in the cheetah. Which seems to kick ass.

 

[JusMX141]

What do you think about the 63mm x 99mm x 103mm Comp wheel that Turbo Lab sells?

That would be the KTS 4041C; it's basically a spec copy of a HX50 wheel (63/99mm) with an extended-tip design and thinner hub.

To me, that's an awfully steep angle with a really low trim number to be very effective a high boost. Trim on the wheel is only 40; compare that to the FP Super 99 which is 72/99mm with a trim of around 53. With a trim that low, it'll be heating the air charge a lot if you're trying to be aggressive with the boost level.

 

[familyMAN]

That company (KTS) keeps missing the boat. They made a slight improvement over the wheel he ran last year (66/84mm, 62-trim) by getting the extended tip spec up to 95mm (67/89mm, 57-trim), but there are other billet HX40 compressors out there with a 99mm backplate and 100+mm extended-tip spec....they just don't have the 67mm inducer that KTS does. So KTS has the inducer, and other companies have the exducer I'm looking for.

The factory billet HX52 wheel is 67/99mm. I don't know why it's so difficult for someone to offer that same wheel to fit a HX40 shaft with a smaller hub and improved aero tech. It would sell like hotcakes.

'

Have you contacted KTS to make what you want? Their catalog spreadsheet has the basic dimensions they require for development (you likely know that already, since you have p/n at your finger tips). Since they already have HX5x and HX40 designs, it should be relatively simple for them to adapt and build the 67/99 or anything else you may desire. Overall height on their performance HX40's and OE design HX50's are the same. Obviously, differences in bore diameter and hub nose diameter. Less obvious, tip heights are different. Still don't think it should be difficult for them to either scale up the HX40 inducer to match Hx50 specs or modify a 50 design.

I'll guinea pig with you

 

[turbotalon1g]

Ugh I wish I could trust turbolab, I want one of these turbos.

 

[familyMAN]

Ugh I wish I could trust turbolab, I want one of these turbos.

I bought the compressor, cover and just built it myself. Had a local machine shop machine the center section. Ran well at WG pressure of 35 and recently upped the boost and holding 42psi so far.

 

[Kapok6]

I wish this discussion would continue. I want to see more info.

 

[NewTurboTuner]

16cm housing came in with a new 3" vband. Boxed up and shipped to TurboLab. Visually compared to the 12cm it looks very very similar on the outside .

Bringing this back; I’m curious how you liked the 16cm housing?

I’ve got a Hx35 on a Twin Scroll t3 16cm housing. I’ve been very pleased with it, I can build Boost on a stock stall converter, and top end power is great. I’m ready for more though and I’m highly considering having Turbo Lab build me a HX40 out of it.

I’m very curious how your 67mm hx40 spooled with the 16cm t3 housing. Thanks!