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#15
by
53 willys
on 11 Jan, 2009 12:59
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TRUE twin turbo on diesel's=yuck
compound turbos on a diesel=FTW!!! :twisted: :twisted: :twisted:
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#16
by
nogama3
on 11 Jan, 2009 15:16
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this thread has got my interest...sounds like a cool idea.
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#17
by
DYNOMAX
on 11 Jan, 2009 15:30
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A cool thing to do would be to use the Garrett T2 + T3 or KKK K14 + KKK K24 in a streetfriendly twinturbo setup.
1.6 or 1.9 TD
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#18
by
dillenger1
on 11 Jan, 2009 20:32
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hahaha street friendly
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#19
by
rallydiesel
on 11 Jan, 2009 21:19
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Personally, I would go with k14 (preferable) or ko4 and something quite a bit bigger than stock for the high flow like a holset hy35 or some other smallish 6 cylinder turbo.
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#20
by
dillenger1
on 12 Jan, 2009 06:25
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this always comes up.Its funny,but we all know that the heads cant take it.There have been post of people that say they can do it successfully,but i dont know about reiability or streetable.
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#21
by
Turbinepowered
on 12 Jan, 2009 06:59
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Something like this.
Two step.
I would try to feed the bigger compressor with the smaller one.
So for compounds you run the exhaust gas through the big one first, then the little one? So the small turbo is feeding it's compressor outlet into the compressor inlet of the larger turbo?
I always thought it went the other way around, with a small (high-pressure) turbo feeding off the exhaust gas first and being fed the "low pressure" discharge from a larger turbo. You get the larger turbo loafing along at say a nice 1.5:1 or 2.0:1 pressure ratio feeding air into the smaller one running along at similar 1.5:1 or 2.0:1 pressure ratio... voila, you have responsiveness on the bottom end and an overall 2.25:1-4:1 pressure ratio.
Have I missed something here? :?
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#22
by
arb
on 12 Jan, 2009 11:52
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Something like this.
Two step.
I would try to feed the bigger compressor with the smaller one.
Nice looking plumbing, but why no intercooler and no turbo oil lines ?
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#23
by
zukgod1
on 12 Jan, 2009 12:23
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Something like this.
Two step.
I would try to feed the bigger compressor with the smaller one.
Nice looking plumbing, but why no intercooler and no turbo oil lines ?
Oh come on man!! :lol:
It's sitting on an engine stand so it's just mocked up.
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#24
by
dillenger1
on 12 Jan, 2009 17:14
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The small turbo is on the exhaust manifold.Seems the small compressor would just work alone to feed the engine till its overcome by the big one ,thats been spooling up in the back ground.I love it!
I always thought the small ones boost would help spool the bigger one,not just the exhaust.thats one bad cummins(even on a stand)
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#25
by
nogama3
on 13 Jan, 2009 07:39
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stick to your original plan fella, and then you can always make changes afterwards. i hope all goes to plan and keep us updated with pics, blogs...
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#26
by
nogama3
on 16 Jan, 2009 16:09
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any updates on what you have decided???
also, what are compound turbos and whats the difference between the turbos mentioned?
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#27
by
jtanguay
on 16 Jan, 2009 16:55
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if the larger turbo feeds into the smaller turbo, would there be any worry of turbo overspeed, or surging due to overspeed?
just curious...
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#28
by
andy2
on 16 Jan, 2009 17:28
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Thing with compounds is that as the low pressure turbo starts to force feed the high pressure turbo it causes the low pressure turbo to slow down as it now has to work harder.The key is keeping the high pressure's shaft speed consistant as the low pressure force feeds :wink:.
It is very possible to run a well tuned set of compounds without wastegates.Basically the low pressure turbo is used to regulate the high pressure turbo's shaft speed.
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#29
by
nogama3
on 17 Jan, 2009 05:01
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Andy2, how are things going with your project?