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> Diesel Compound Turbocharging
Jordan
post Mar 23 2006, 07:33 PM
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i agree with dakian... intercoolers no matter that boost level make the turbo work more efficiently.
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clarkma5
post Mar 23 2006, 07:52 PM
Post #22


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QUOTE(DakianDelomast @ Mar 23 2006, 07:21 PM) *
Wtf? I'm not talking about changing the pressure at all...

I'm talking about delta p from atmospheric pressure to the pressure of the intake charge.

Though that's probably stupid because turbo boost is measured in gauge pressure...so disregard the delta.
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PBB
post Mar 23 2006, 08:20 PM
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Also consider the difficulty of making an intercooler and all the piping to handle 60-100+ psi. The setup pictured has ~3 feet of metal piping and one hose section to allow for thermal expansion of the exhaust manifold. There is so little to fail there even at insane boost pressures.

If you're looking to get more power than 60+ psi will provide, go with propane injection. You'll get up to 60% more power at the flip of a switch.
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Halflifehavock13
post Mar 28 2006, 05:07 PM
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QUOTE(PBB @ Mar 23 2006, 11:20 PM) *
If you're looking to get more power than 60+ psi will provide, go with propane injection. You'll get up to 60% more power at the flip of a switch.

Bingo, I was waiting for someone to say that.

But, if you are gonna run the hassle of putting that much money into an engine for race/off road use, you might as well slap on a few intercoolers.
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PBB
post Mar 28 2006, 05:50 PM
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QUOTE(Halflifehavock13 @ Mar 28 2006, 08:07 PM) *
But, if you are gonna run the hassle of putting that much money into an engine for race/off road use, you might as well slap on a few intercoolers.

head.gif
With the problems of containing the massive boost through intercoolers and piping and the minimal power gains, it's just not worth "slapping on a few intercoolers."
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DakianDelomast
post Mar 28 2006, 06:32 PM
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PBB you know they use intercoolers on Semis right?
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PBB
post Mar 28 2006, 06:36 PM
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rolleyes.gif I've worked on semis.

Those turbos are rather small, don't run much boost and don't use compound turbochager setups.

My comments about intercooling were specifically addressed to compound turbocharging.
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