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 2Likes
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2
Post By 750hp
07-28-2012, 06:18 PM
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CC Member
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Join Date: Nov 1999
Location: Brisbane, Australia,
Q
Cobra Make, Engine: Contemporary CCX3117 427FE
Posts: 4,381
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Not Ranked
Venturing into the unknown - turbos
I've taken a leap of faith, turning my back on the comfort zone of superchargers and have decided to give turbos a try.
I bought a twin turbo package with 2x Garrett GTX4202R billet impeller BB turbos and all of the oil/water lines and fittings, Garrett turbo tach, fitted sensor and datalogging wiring.
Garrett rate them at up to 1150hp each, so running them as twins might be a bit radical for the street. What do you reckon; twins on a big block or single turbo on a small block?
Maybe I should mount them as twin rear-mounts in the back of the ute. A couple of people looked strangely at the air filters protruding above the tray as I drove home!
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Craig
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07-28-2012, 06:41 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Not Ranked
Well I reckon which way you go will be determined by the size of your Nuts and how tight they are or aren't !! Then again it could be determined by the size of your exhaust and whether it puckers easily......................or not ! LOL
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Rog 246
Harrison #100
Last edited by Rog246; 07-28-2012 at 06:42 PM..
Reason: can't spell !
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07-28-2012, 08:51 PM
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CC Member
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Join Date: Mar 2009
Cobra Make, Engine: FFR
Posts: 388
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Not Ranked
Welcome to the dark side. My vote is for twins, but I'm obviously biased. Cheers.
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07-29-2012, 05:18 AM
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CC Member
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Join Date: Apr 2011
Location: adelaide south australia,
SA
Cobra Make, Engine: Adelaide cobra kit toyota 1uzfe
Posts: 19
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Not Ranked
Wow! they're huge. You might see boost in 2015... or maybe get into the 7 second range
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07-29-2012, 08:12 PM
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CC Member
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Join Date: May 2006
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival 3506
Posts: 198
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Not Ranked
Twin turbos on a big block in a car that weighs 1100 KG , good luck !!
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07-30-2012, 05:56 AM
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CC Member
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Join Date: Apr 2011
Location: adelaide south australia,
SA
Cobra Make, Engine: Adelaide cobra kit toyota 1uzfe
Posts: 19
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Not Ranked
Seriously though, one of those size turbos would suit a big block, with standard heads cam and bottom end. The torque curve would be immense.
Theres a video of a dax demo car on youtube with a 502cui / 8L chev going around brands hatch which shows monster torque, the car's barely over 2k rpm and roars up to 120mph effortlessly. NA too
With one of those turbos it'd never need to rev past 4500rpm or run high boost.
It would be a MONSTER
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07-30-2012, 06:15 AM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
__________________
Mike Murphy
Melbourne Australia
Last edited by Aussie Mike; 07-30-2012 at 06:25 AM..
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07-30-2012, 06:41 AM
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CC Member
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Join Date: Nov 2008
Location: Brisbane Australia. Cobra:Arntz Chev 454,
Posts: 847
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Not Ranked
Quote:
Originally Posted by Aussie Mike
I think you need to buy John Lang's Chrysler 300c Outlaw car and fit those twin turbos to a KB Hemi and go set some records.
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Jeez Mike, don't encourage him!
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Don.
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07-30-2012, 06:46 AM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
Sorry Don,
It's just I've seen this car many times in the flesh and it's awesome. Just begging for someone to finish it off. Makes me sad to see it sitting there unfinished.
Cheers
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Mike Murphy
Melbourne Australia
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07-31-2012, 04:28 AM
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CC Member
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Join Date: Nov 1999
Location: Brisbane, Australia,
Q
Cobra Make, Engine: Contemporary CCX3117 427FE
Posts: 4,381
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Not Ranked
These wouldn't go close to supplying the air/pressure requirements, but imagine what a twin turbo top fuel engine would be capable of! It's generally regarded that you would pick up in excess of 1000hp over the current supercharged combinations...
If I run a twin turbo configuration, the engine to support it would be too much for a Cobra. It would go into the Chevelle and replace the current 8-71 blown combo. Now, a single turbo small block in a Cobra might be an option. My short drive in OZVENOM's turbo street Cobra years ago was great fun.
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Craig
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07-31-2012, 09:48 PM
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CC Member
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Join Date: Apr 2011
Cobra Make, Engine:
Posts: 79
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Not Ranked
Here's my son's turbo hanging off the side of a 1.8L engine, might be just big enough 
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Regards
Dave King. The Shire ( NSW )
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