Dom
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Registered: 13th Sep 03
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quote:
Originally posted by Siberia
dont think the charger is being fed from the turbos on that pic above... but i cant see the inlet so could be wrong...
no, i think your right actually - looks like the charger and turbos is all plummed into the same outlet pipe, through the intercooler and into engine 
edited - 
[Edited on 12-04-2005 by Dom]
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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that's what I thought, SC seems to be grafted onto the turbo pipe with a T piece... must be a better way of doin that surely?
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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that pipe going the the IC is the outlet from the turbos not the inlet.
the inlet to the turbos are the little fans you can see on them.
i cant see were th inlet is on the super charger.
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Ryan L
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Registered: 4th Mar 03
Location: Essex
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are you sure thats not a twin turbo engine, i know fuck all but all ways though the supercharger was only connected to the throttle body and only has one internal turbine )and so wouldnt have exhaust gases anywhere near it)
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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yeah its a normal skyline twin turbo engine with a supercharger added....
to be honest i dunno if that suppercharger would be that affective. i think the turbos would be supplying far more charge that it could
exhaust gases dont drive the supercharger
[Edited on 12-04-2005 by Siberia]
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Ryan L
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Registered: 4th Mar 03
Location: Essex
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could do with some pictures really to work out whats going on, i take it that one of the turbos is smaller than the other so has less power but less lag, why would you need a supercharger in addition surely thats just going to have minimal effect?
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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i think that engine is for show more than anything else...
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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To compound charge, you need to
Have a clutch on the s/c so you can turn it on and off.
And a Butterfly valve or similar to switch which way charge is going.
So when the S/c is on it blocks the feed from the turbos to the where the s/c joints. and vica veras when the s/c is off.
A RS500 has this system, it's up the emerald site. Very clever stuff.
But if you use a good GTseries turbo in the first palce you can get away with little lag.
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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So you can't run both together? Surely you must be able to...
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Dom
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Registered: 13th Sep 03
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quote:
Originally posted by CorsAsh
So you can't run both together? Surely you must be able to...
well the Lancia Delta charger shut off after something like 4.5k and then the turbo kicked in to the limit - but it all depends how its fitted together etc etc
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Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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quote:
Originally posted by CorsAsh
So you can't run both together? Surely you must be able to...
If you think about it, if you were at full chat, with both the turbo and SC at full pelt, then let off, the inlet throttle slams shut, the pressure builds up between the turbo/SC and throttle, and the turbo's stall (hence why you fit a DV usually). Only now, the SC will still be spinning at the same rate as the engine. It could theoretically start to force air back through the turbos, and out the inlets of the turbos, forcing the exhaust side of the turbo to turn backwards, and most likely stall the engine  .
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Dom
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Registered: 13th Sep 03
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i believe there are DVs (or something similar) on chargers as well - otherwise it would be trying to force air into the engine when off the throttle
eitherway, this startting to get out of my league
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vibrio
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Registered: 28th Feb 01
Location: POAH
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quote:
Originally posted by Siberia
dont think the charger is being fed from the turbos on that pic above... but i cant see the inlet so could be wrong...
the charger is not feeding the turbos it is blowing directly into the pipe going into the IC.
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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You can't run them together because
1) the s/c can't supply the amoutn of air going in to the engine to keep up with the turbo's causeing boost to go out the s/c
2)The S/c is paracitic and take power off the crnak, why would you leabve it runngin longer than you had to?
3) superchagrers don't need DV's because you throttle off and the engine slows and the boost goes down cause the s/c slows down too.
4)The S/C woul dbe geared to produce its max CFM rate at what ever it's meant ot swap for the turbo at, as it's geared driectly off the crank you can flog it to death by 4k then turn it off, else it will dye.
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Tom
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Registered: 3rd Apr 02
Location: Wirral, Merseyside
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It would spend 99% of the time broken
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BeArDy
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Registered: 7th Aug 00
Location: Manchester
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Nissan Mirac Super came Supercharged and Turbo'ed
110bhp out of a 998cc standard.....
works really well IF set up right
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