TwinCharger???

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Weasel

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There's a guy on the taurus club page that put both a supercharger and a turbo on his 3.0 L Vulcan. I'm wondering what a setup like this could do in a SHO. Th's person says he gets 300+ out of the supercharger alone, let alone a turbo combo. That's a long way over the stock 140 for a Gen II. What do you think???
 

93rev2sev

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The idea isn't uncommon, but you would need all forged internals and some other expensive mods.

I think it's pretty well established what the SHO motor can do with stock internals. I don't know anyone that has a fully forged SHO engine. Though, I'll bet forged crank/rods/pistons are all available for the vulcan.
 
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BlackonBlack89

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HMM a small remote turbo feeding the S/C until 4k where the s/c just does not need the turbo anymore. ultimate powerband!!!! couple it with an electric exhaust cut out to stop the turbo totally.

YUMMY.


Can vortechs ( or any centrifugal blower) be forced feed like their positve displacment cousins?? (eatons, ect)

Just for random curisoity.
 
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yamahaSHO

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Meh.... properly size a TC or SC and you'll have more power than you can manage.

On a Vulcan... meh...
 

Sho Amo

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think about how much it costs to have both an SC and Turbo. then realize how much power he is making and that you can make that much with just one of the said FI choices.
 

yamahaSHO

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HMM a small remote turbo feeding the S/C until 4k where the s/c just does not need the turbo anymore. ultimate powerband!!!!

YUMMY.

If you're looking for the turbo to take over in the low RPM, a remote setup isn't desired.

I'd rather have a PD blower paired with a really large turbo.
 

BlackonBlack89

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but for the SHO; PD blower suxes... no more intake (sans kenny setup)

but I think a small t25 would proably spool up by 2k.:) not like the SHO tranny could handle the TQ anyways

Here another one. small exhaust to spool the turbo quickly then have an electric exhaust cut out and have open headers for the s/c and high RPMs so it can breathe.

think about how much it costs to have both an SC and Turbo. then realize how much power he is making and that you can make that much with just one of the said FI choices.

meh if you have boost you are already in to deep LOL
wats another 2k :rofl:
 
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Weasel

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The major downfall to this setup is that it will take a shitload of money. On the flipside, with the right accomodations, we could be on to something. I figured a SHO would be the optimum test mule, given how advanced the Yamaha engines were in their time. ****, they still are the benchmark against some engines, comparatively.
 

1993MTXSHO

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I don't know anyone that has a fully forged SHO engine.

maybe I'm missing something here but, aren't the sho's crank and rods forged from the factory? I also have forge pistons as well as many other members here giving me a "fully forged" engine:confused:
 

yamahaSHO

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but for the SHO; PD blower suxes... no more intake (sans kenny setup)

There have been a few people to use PD blowers without losing the intake. It can be used with pipe too. You're already going out of your way to add both a turbo and supercharger, I don't see how this really makes the project sound insane....
 

nik97

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If you could cleanly mount an M90/M112 on top of the motor, who cares about the intake?

I think someone is working on that as a matter of fact ;)

Yes, as Jason mentioned, pair that with a monster turbo and you've got yourself one **** of an expensive, useless, 4 door, tire smokin' tranny breaker
 

Off Road SHO

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Yes, as Jason mentioned, pair that with a monster turbo and you've got yourself one **** of an expensive, useless, 4 door, tire smokin' tranny breaker


Now that right there is funny, I don't care who you are.

Tom
 

Sho Amo

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If you could cleanly mount an M90/M112 on top of the motor, who cares about the intake?

its been done. it stuck out of the hood and ended up blowin the motor.


edit: name was geek sho
 

wicked92sho

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For the record.....a T-25 turbo on a SHO 3.0 or 3.2 motor would spool in the 500 rpm range not 2k. On a 2 litre motor a T-25 spools under 2k. Just a fyi.
 

nik97

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For the record.....a T-25 turbo on a SHO 3.0 or 3.2 motor would spool in the 500 rpm range not 2k. On a 2 litre motor a T-25 spools under 2k. Just a fyi.

So it would be spooled at idle? I'd have to say 1800-2000 RPM lol.
 

Off Road SHO

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Actually, the T-25 starts spooling as you're cranking the motor to start it. Any amount of airflow over the vanes will start the vanes spinning. But the compressor wheel has to push MORE air to create boost. Twin T-25's on a 3.o liter would be sweet.

Tom
 

wicked92sho

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Yes, a T-25 is so small that with 3 litres of SHO motor it would be very close to making positive boost right off idle. Even in 2g DSM's that come with the T-25 they are making positive boost sooner than you would think. The downside is that they are too small to flow anything past 4500 rpm. Which would make it impractical for a SHO, and are the first thing anyone makes a boat anchor of in a DSM.
 
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