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Old 06-20-2012, 10:11 PM   #1 (permalink)
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Default Lets talking Turbine wheels!

Still working the internal struggle of what will be my end all best and greatest turbo upgrade per dollar spent.
And im stuck on the turbine side..
one side of me says. the small stock wheel will spool the fasterestness dog..whut whut.


and the other side says. to much exhaust restriction will limit how much fresh boosted air can enter the chamber. lowering efficenncy and reducing HP gain.

So.. can we discuss what turbine shaft you use.. why. what gains have you seen.. should you go the biggest you can get off the bat? HL. or step up one or two sizes. H or L.

Im only looking to make 400-450 on a dyno. and im done.. havent been able to get these 9b's to make anything over 334 so far. Next upgrade will be 15G or 16T's.. but.. exhaust turbine size.. . please... . .
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Old 06-21-2012, 12:14 AM   #2 (permalink)
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Default Re: Lets talking Turbine wheels!

On back to back testing we saw a improvement of 25-30 awhp and torque going from the L to the HL. Spool was only a couple hundred RPM slower going from the L to HL as well so the gains are pretty substantial vs the loss of a couple hundred rpm.

Going from a standard shaft to the L is hardly worth it as the L is really not much bigger. If you were going to step it up I'd say at least go H but really if you are already going H, go HL because the spool difference is so minimal between H and HL.
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Old 06-21-2012, 12:22 AM   #3 (permalink)
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Default Re: Lets talking Turbine wheels!

Quote:
Originally Posted by mas View Post
Still working the internal struggle of what will be my end all best and greatest turbo upgrade per dollar spent.
And im stuck on the turbine side..
one side of me says. the small stock wheel will spool the fasterestness dog..whut whut.


and the other side says. to much exhaust restriction will limit how much fresh boosted air can enter the chamber. lowering efficenncy and reducing HP gain.

So.. can we discuss what turbine shaft you use.. why. what gains have you seen.. should you go the biggest you can get off the bat? HL. or step up one or two sizes. H or L.

Im only looking to make 400-450 on a dyno. and im done.. havent been able to get these 9b's to make anything over 334 so far. Next upgrade will be 15G or 16T's.. but.. exhaust turbine size.. . please... . .
U want to make that much HP? Time to think about more than the shaft size in ur turbos? Really?

Yes...exhaust. ur on the right track there. Push it in and u have to let it out. But what the hell does turbo shaft size have to do with what ur looking for? I dont even comprehend that question. Totally off with that. U can pull that goal off stock turbos. U just need to get ur engine set to do it. Those td04s will get u to ur goal...its the rest of it u need to be looking at.

Where are u with fuel? Internals? Got the air pump ready to take it in and let it out? Thats all this engine is...an air pump. Give it more air...give it more fuel. Give it all it has until it detonates...predetonates...or is otherwise on the edge of puking its guts up...and youre doen.

Not enough to make u happy? Time for a hell of a lot more parts than a turbo shaft...
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Old 06-21-2012, 07:46 AM   #4 (permalink)
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Default Re: Lets talking Turbine wheels!

so gearaholic.. you are saying you have no idea how a turbo works...

the turbo shaft . is connected to the exhaust side wheel. make the shaft and turbine wheel one section.


Just like everyone here obsesses about the COMPRESSOR side of a turbo. the part that makes them a 15G or 19T or 9b.. there is another whole entire side of the turbos. and multiple wheel and fan sizes to go with it. and turbine side is what spins the compressor side. using the exhaust gases.. the larger the wheel is. the more air can get by. and the faster it can spin. but the smaller the turbine shaft/wheel is the faster it can spool. trying to find how and what people have comprimised.

I have everything i need sir to make more than that much power. im on stock turbos untill i can decide on what size i want to go with and why.
Hence i would like to discuss peoples turbine wheel choice..
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Old 06-21-2012, 08:13 AM   #5 (permalink)
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Default Re: Lets talking Turbine wheels!

Quote:
Originally Posted by Gearoholic View Post
U can pull that goal off stock turbos....
Really?

Ok, never rmind.

If your talking 450 on pump then for the money I would say DR650's. But then that's not really the question. Everything is a trade off but the HL 11 blade might be the best of both worlds. Fast spool and plenty of HP. It's part of what makes the new billet DR's so good.

MITSUBISHI TD04HL Turbocharger Turbine Wheel 11 Blades | eBay


16T's would do it, but why run at the edge. 19T's or better yet billet 19t's with 11 blade HL.
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Old 06-21-2012, 10:42 AM   #6 (permalink)
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Default Re: Lets talking Turbine wheels!

TD04 lag is a joke. There is really hardly any difference between the standard turbine wheel and an HL. I would not call it a mod that takes fun out of it because you're reving to the moon. Yes it's noticeable that they don't spool as quick but frankly when you feel how much more power there is you won't care about a couple hundred rpm. If you did you would go with DR-750s and be done with it. But that's way overkill and budget. Billet DR-650s are a good option. Otherwise, 19Ts or 15G HL turbos would be a more budget friendly upgrade.
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Old 06-21-2012, 07:15 PM   #7 (permalink)
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Default Re: Lets talking Turbine wheels!

anyone else have experience with different turbine wheels.
wont be buying DR anything..

Just trying to compare spool time VS HP out of a stock wheel vs larger turbine wheels. they still seem to be a black art and magic to this community. I guess im just use to my TO4E guys.
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Old 06-21-2012, 07:41 PM   #8 (permalink)
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Default Re: Lets talking Turbine wheels!

DR already makes the best turbine side if price is no object. His original DR650s used an RX7 turbine wheel which had 1 less fin and those were the good DR650s. The next version were not very good and the latest version are the best because though it uses a stockish turbine wheel, the compressor is billet so it flows more air faster. I think if you came up with a billet comp wheel 19T like in size and coupled it to a RX7 turbine wheel, that might be a great combo.
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Old 06-21-2012, 07:49 PM   #9 (permalink)
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Default Re: Lets talking Turbine wheels!

again... no DR turbo.. thanks.

what was the RX7 turbine wheel classified as?
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Old 12-09-2012, 08:52 PM   #10 (permalink)
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Default Re: Lets talking Turbine wheels!

So is it worth having the stock turbine housing bored out for the stock wrx td04L turbine wheel or just use stock td04 turbine wheel? Is the cost worth the power upgrade.

Td04 vs td04L?

Im only asking this question because if its not really a big upgrade why bother? And if it is then when having the turbing house bored out i would just go to a HL wheel.
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