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Billet compressor wheels

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WH1C Holset Billet Aluminum Compressor Wheel with "Extended Tip Technology" | eBay

...but keep in mind the factory H1 thrust system will never withstand the abuse that compressor would dish out at high boost, so you're likely throwing $200 straight down the sh**ter.

The seller is completely wrong- you can't use HX wheels on H1 turbos and vice-versa. The thrust collars are different widths...so putting a HX wheel on a H1 turbo will make it hit the cover, and putting a H1 wheel on a HX turbo would make it rub the center housing.

That would make me question whether the seller has any idea what they're actually selling.

Someone should DEFINITELY add this to the Holset info thread in the paragraphs about the 35/40, because this is good information to know when preparing to buy a Holset. So even though you can get a v-band compressor housing out of a h1c/wh1c, the thrust bearings will not handle the abuse that the 35/40 will.
 
Reviving this from the dead. Did anyone ever get any real comparable results between the 11 blade and any of the major/minor designs? Or even a cast MHI 20G wheel?

It appears there's a new design out now too, an 8+8 version. https://www.ebay.com/itm/TRITDT-Bil...-8-8-for-MHI-Fuso-TD05H-TD06-20G/222641462358

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Someone should totally do a complete comparo between the 5+5, 6+6, 7+7, 8+8 and the 11 blade.
 
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Reviving this from the dead. Did anyone ever get any real comparable results between the 11 blade and any of the major/minor designs? Or even a cast MHI 20G wheel?

It appears there's a new design out now too, an 8+8 version.
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Someone should totally do a complete comparo between the 5+5, 6+6, 7+7, 8+8 and the 11 blade.
I didnt do any testing and dont know if i can now but i went and got a KTS 7x7 extended tip
 
I believe the extended tip blades shouldn’t be used with the standard tdo5h turbine wheel, I had a fresh 11 blade extended compressor with a tdo5h in a 7cm housing eat the thrust bearing in a race after I had done a bunch of dyno pulls. I’ve since but a standard tip billet in and it’s been going for years.
 
I believe the extended tip blades shouldn’t be used with the standard tdo5h turbine wheel, I had a fresh 11 blade extended compressor with a tdo5h in a 7cm housing eat the thrust bearing in a race after I had done a bunch of dyno pulls. I’ve since but a standard tip billet in and it’s been going for years.
I never got advised against it when i ordered it. I had a turbo company in the UK talk me through options and they knew the turbo and its plans and said i was pairing it with a 9 blade turbine wheel so maybe because it was 9 and not 12 it was ok? Not much i fo out there for the wheel combos but i cannot see why it would be an issue, its also upgrsded hardware so what am i missing or not seeing i need to learn here LOL i only know so much about turbos so happy to lesrn and know more and this subject wohld be nice to know
 
It seems to me that the most popular choice between all of these wheels has been the 7+7 extended tip. Which follows the posts @polarmoment made regarding highest blade count being more efficient. So would it be safe to assume the new 8+8 extended tip I linked above would be even more effective at higher pressure ratios?

I have a ways to go before I get around to putting one together, but whichever wheel I use, I'm planning to pair with a twin scroll Evo X turbine housing.
 
It seems to me that the most popular choice between all of these wheels has been the 7+7 extended tip. Which follows the posts @polarmoment made regarding highest blade count being more efficient. So would it be safe to assume the new 8+8 extended tip I linked above would be even more effective at higher pressure ratios?

I have a ways to go before I get around to putting one together, but whichever wheel I use, I'm planning to pair with a twin scroll Evo X turbine housing.
From a rough memory of the convo i had with the builder he said the 7x7 showed great spool vs top end flow without creating and resistance while up top, i believe the 8x8 might have a better faster spool but might perhaps limit its top end more, but without any one doing data for it its hard to assume, normally more blades is faster spool but lacks top end or it restricts it more so who know how it really will act.

My 7x7 picks up kinda nice and low and seems to find another jump around 5k rpm so feels like a double boost hit which is weird but nice
 
found this on my comp. not much help but it tells a bit about different types in short
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I just got the parts and assembled this thing yesterday. Can’t wait to get it going!

I also ordered a MHI td06 compressor housing that I found NOS on eBay for $80. Not sure if I’ll use it until I see how the smaller compressor housing performs.


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I just got the parts and assembled this thing yesterday. Can’t wait to get it going!

I also ordered a MHI td06 compressor housing that I found NOS on eBay for $80. Not sure if I’ll use it until I see how the smaller compressor housing performs.


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This is pretty much exactly what i have expect i went 7x7 from KTS,

You will love how it feels and if it acts like mine does you will feel boost twice!

Are you having this balanced? I highly suggest that you do or you WILL have issues! When i sent mine off it was way out of balance and said if i drove on it then it would or destroyed itself in no time at all! New does not mean its perfectly balanced together so my advice is send it off and have it done and save your money by ruining that nice turbo build
 
Good advice.

The turbine wheel im using is a brand new td05h 9 blade that is said to flow more than the original. It was individually balanced as was my compressor wheel.

I did not plan to balance the unit, but perhaps i will now.
 
Good advice.

The turbine wheel im using is a brand new td05h 9 blade that is said to flow more than the original. It was individually balanced as was my compressor wheel.

I did not plan to balance the unit, but perhaps i will now.
Yeah its the same wheel as i got. The 9 blade really comes to life up top and high revs dont seem to be an issue.

I will go find my balance chart they did for me. The difference is amazing and shocking all at once.
100% send it away to get unit balanced
 
It doesn’t matter if the individual components were balanced, it can still be out of spec once the whole rotor assembly is assembled.

100% get the whole thing balanced
 
New style wheel?

The turbine is relatively new, yes. The compressor ive had on my shelf for about 4 years. I bought it new back when all of these billet 20gs started coming out but im just now getting around to using it.

So FP sells the V1 68HTA (Standard TD05H hot side, 7cm turbine) new for $800.
Is this an upgrade over the 20G / billet 20G?

The 68HTA is a larger turbo than the 20g.... i would say its worth every bit of that $800 price tag.

That said, i have about $475 into this billet 20g.


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Reviving this from the dead. Did anyone ever get any real comparable results between the 11 blade and any of the major/minor designs? Or even a cast MHI 20G wheel?

It appears there's a new design out now too, an 8+8 version. https://www.ebay.com/itm/TRITDT-Bil...-8-8-for-MHI-Fuso-TD05H-TD06-20G/222641462358

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Someone should totally do a complete comparo between the 5+5, 6+6, 7+7, 8+8 and the 11 blade.
No need- the 7-blade D655 KTS wheel is pretty much the ultimate version of the 20G currently offered for max flow. Downside of the D655 wheel is it's heavier than the cast OEM compressor so if you're pairing it to a smallish turbine (TD05H) then the turbine is limiting the compressor from peak potential and the compressor isn't giving you any spool benefit over stock.

The facts regarding compressor design are that the higher the blade count the better the low-boost efficiency will be but the high-boost performance will tend to suffer. I've not seen anything positive from the 11-blade D645 GTX design at all, and it seems to be the most surge-prone of all the 20G versions offered from reports. The 11-blade tech must not have worked that well as even Garrett gave up on it for their Gen 2 GTX lineup.

So pairing the right compressor to the right turbine can be a little tricky if you're trying to get the most flow without causing a surge issue at whatever your desired boost level may be. Over the years I've settled on the D655 for basically any 20G turbo with a turbine larger than TD05H that will be seeing lots of abuse, and either the D620 (non-extended tip) or D635 (extended-tip) 6-blade wheels when paired with the TD05H turbine as both of those choices are lighter than the OEM cast wheel. The latter is based a little on what the user's intentions are as well as their budget.

So FP sells the V1 68HTA (Standard TD05H hot side, 7cm turbine) new for $800.
Is this an upgrade over the 20G / billet 20G?
Current price until their Small 16G donor supply is exhausted...then it'll likely go back to being a $1200 turbo.

Claimed airflow is 49 lb/min with the HTZ compressor aero on this model but I don't see how that's possible in a 7cm2 housing with an unclipped TD05H turbine.

The 68HTA compressor is comparable to a billet 18G by the size so a comparable billet 20G will be a trim upgrade no matter what.

The 68HTA is a larger turbo than the 20g....
Uhhh, nope.
 
@JusMX141 , have you ever used a D651 wheel in anything? Just curious looking at KTS's online catalog xls file, it looks like it's the same specs as a D655 except 6x6, with a smaller nose diameter (of 12.4mm vs 13.5mm) and almost 6mm taller blade height. It does note that it requires compressor cover machining. Just wondering if that's a viable option in any way.
 
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Putting this here after also reading the reply in my thread. Lol.

The only compressor wheel I woulda been interested anyway is the 51 lb/min “7168” wheel they used in their 68HTA’s and 71HTA’s. If it’s not offered or something I couldn’t get at the current time I just wouldn’t get it.
Don’t care what compressor cover it came in but woulda preferred downfiring for simplicity / 1 less bend (f*** the j-pipe). Though I agree and liked the informative notes on ported vs nonported compressor housing you supplied in your other reply.

Whatever flow the 7cm Td05h wheel couldn’t pass, the bored out hole going to the external wastegate and the wastegate itself would hopefully have taken care of.
I’d be afraid of clipping the 05h wheel and losing spool. I know it’s not much but was REALLY curious if the 9-blade td05h woulda been the answer.

Edit —> I mean seriously one of the best pound for pound / all around turbos you can Frankenstein seems to be this:
7168, 51lb/min compressor wheel
Downfiring ported compressor housing
9-blade td05h wheel
7cm non EVO turbine housing for wastegate porting capabilities.

Other than a Billet 20G (from what I’m gathering is a step up?), this seems to be THE best possible combination for street/track performance.
Something that comes on early enough to not be a dog, flows enough for top end, and is MHI modular (able to retain FP manifold and supporting equipment).
Am I gettin this right?
 
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@JusMX141 , have you ever used a D651 wheel in anything? Just curious looking at KTS's online catalog xls file, it looks like it's the same specs as a D655 except 6x6, with a smaller nose diameter (of 12.4mm vs 13.5mm) and almost 6mm taller blade height. It does note that it requires compressor cover machining. Just wondering if that's a viable option in any way.
The 651 and 652 are negative-cutback wheels, so not only is the overall height of the wheel much taller the inducer tips protrude well into the inlet of the housing...even beyond the compressor locknut flange. This design is rather inefficient because not only does it increase rotating mass it's not very aerodynamic. Only so much airflow can be compressed and exit the wheel per revolution, so making the overall height of the compressor significantly taller will often hurt more than it will help. To reinforce this, all of your best-performing compressors from FP/Xona and Precision all utilize a positive cutback angle.

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I mean seriously one of the best pound for pound / all around turbos you can Frankenstein seems to be this:
7168, 51lb/min compressor wheel
Downfiring ported compressor housing
9-blade td05h wheel
7cm non EVO turbine housing for wastegate porting capabilities.

Other than a Billet 20G (from what I’m gathering is a step up?), this seems to be THE best possible combination for street/track performance.
Something that comes on early enough to not be a dog, flows enough for top end, and is MHI modular (able to retain FP manifold and supporting equipment).
Am I gettin this right?
I'd never use a FP race manifold on any turbo with a TD05H turbine. The low end and midrange power you lose you'll never gain in top end pull on a turbo that small. So I'd still favor the 68HTA in a stock-appearing cover on an Evo III or 2G manifold with the collector opened to 60mm I.D.

Regardless, what I consider the "best" and what you may consider the "best" are two different things...and neither of our "bests" will work for the next guy who may be looking for more power or limited to using 91-octane fuel which would make the V2 68HTA a better option due to the looser turbine wheel and housing.
 
I shoulda just said MHI modular and left it at that. :)
Agreed on manifold bit.


Regardless, what I consider the "best" and what you may consider the "best" are two different things...and neither of our "bests" will work for the next guy who may be looking for more power or limited to using 91-octane fuel which would make the V2 68HTA a better option due to the looser turbine wheel and housing.
Yeah, but at that point said guy must be chasing a number. Lol.
I was focusing on retaining as much spool while also retaining high flow.

Again, on paper and live results / experience from you guys pointing to what I listed above. I realize you’d be up against a serious knock wall.
But you’re still getting a SOLID performer per dollar spent on the seasaw of spool vs flow.
 
Yeah, but at that point said guy must be chasing a number. Lol.
I was focusing on retaining as much spool while also retaining high flow.
Focusing on spool enough to use a turbine that may potentially wreck the whole turbo with very little use is still chasing a number in my opinion, it's just a different type of number. I'd rather have a known-durable turbine in something I'm building, especially if it's going to a customer that may potentially give a bad review or feedback.
 
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