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Supercharged fairmont issues. 

 

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 Post subject: Supercharged fairmont issues.
Posted: Thu Feb 18, 2010 10:49 pm 
Stock as a Rock
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Age: 26

Posts: 136

Joined: 23rd Dec 2008

Ride: EL FAIRMONT

Location: Perth
WA, Australia

bought a supercharged 97 ghia. high comp pistons,ported heads,injectors,flash tuned, sprintex supercharger,pacemakers 2.5inch into 3inch tip. probably more.

not running as fast as you'd think it would be.

now the previous owner said hes never really had it tuned for performance and its on around 4psi. which leaves me to think the charger is probably robbing more power then what its giving back.

also the 4sp seems like it has a shift kit, really launchs into 2nd and jumps about 10km/h up the speedo.

this car is fast, but it just feels de-tuned at the moment.

also its missing the snorkel which well you can imagine the heat in the engine bay of a supercharged I6. HOT! so that could be an issue also.

i really want some help with this one, first supercharged car.
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 Post subject: Re: Supercharged fairmont issues.
Posted: Thu Feb 18, 2010 10:56 pm 
Getting Side Ways
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Age: 24

Posts: 422

Joined: 10th Jul 2009

Gallery: 7 images

Ride: Black EB 5 Speed EL Front End

Location: Bundaberg
QLD, Australia

why would you want high compression pistons when its forced induction, isn't it better to have a lower compression ratio

 

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 Post subject: Re: Supercharged fairmont issues.
Posted: Thu Feb 18, 2010 11:52 pm 
Stock as a Rock
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Age: 26

Posts: 136

Joined: 23rd Dec 2008

Ride: EL FAIRMONT

Location: Perth
WA, Australia

not sure mate. probably

i just read the rebuild sheet and it stated special pistons installed $2500

so i assumed high comp.
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 Post subject: Re: Supercharged fairmont issues.
Posted: Fri Feb 19, 2010 9:00 am 
Getting Side Ways
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Posts: 659

Joined: 14th Apr 2006

Ride: EF Fairmont Sedan

Power: 180 rwkw

Location: Ferntree Gully
VIC, Australia

Any Supercharger I have seen installed on an e-series has the pod exposed under the bonnet with no snorkel...........

Ahs it got a Chip installed in the J3 Port? detuned or not tuned at all?

You really need a chip to have it tuned properly to suit a super charger

 

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 Post subject: Re: Supercharged fairmont issues.
Posted: Fri Feb 19, 2010 9:05 am 
Getting Side Ways
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Age: 34

Posts: 3406

Joined: 7th Feb 2005

Ride: AU2 Ute

Location: melbourne
VIC, Australia

Post some pics up.

The high comp pistons might be why its only running 4psi.
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 Post subject: Re: Supercharged fairmont issues.
Posted: Fri Feb 19, 2010 10:42 pm 
Parts Gopher
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Age: 40

Posts: 64

Joined: 13th Dec 2009

Ride: AU1 VCT & AU2 XL

Location: Newcastle
NSW, Australia

Might've been built to be high performance NA then if it didn't goes as well as he wanted added the supercharger... But those hi-comp pistons are holding it back.

Adding an intercooler could help by lowering intake temperatures.
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 Post subject: Re: Supercharged fairmont issues.
Posted: Sat Feb 20, 2010 11:18 pm 
Tyre Shredder
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Age: 36

Posts: 387

Joined: 30th Nov 2007

Ride: AU111 XR6 VCT Supercharged

Location: Brisbane
QLD, Australia

gureno wrote:
not sure mate. probably

i just read the rebuild sheet and it stated special pistons installed $2500

so i assumed high comp.


'Special pistons' could be low comp? 4psi isn't going to be producing a lot of power, which may be the problem.

 

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