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Old 16 Oct 2006, 08:08 PM   #1 (permalink)
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Hi all im after some advice the head gaskets have gone on my 93 WRX so i want to do a complete rebuild for more power.I am looking for 350-400 bhp, i have listed below the mods so far and a couple of things bought ready to fit.All work will be done by me at my work,Ie what pistons,rods,cams etc

Walbro fuel pump
Fuel pressure reg
Parallel fuel rails
3" decat and system
Unequal length headers
Hks filter kit in cold air box
Sti 4 intercooler

Bought ready to fit
Front mount
Apexi power fc

Cheers for any help
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Old 16 Oct 2006, 08:15 PM   #2 (permalink)
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may need a bigger injectors.
blah blah blah
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Old 17 Oct 2006, 07:04 AM   #3 (permalink)
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Defo injectors,
Why STi4 intercooler if you have a Front Mount ??

You may want to consider a larger Turbo as well ??
All the best

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Old 17 Oct 2006, 08:14 AM   #4 (permalink)
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will the wrx engine sustain 350-400 or will it go bang?
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Old 17 Oct 2006, 11:07 AM   #5 (permalink)
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It will go bang.
You need forged pistons, version 9 rods and crank, and bigger injectors.
Bigger turbo as well.
Metal headgaskets can take more power but you have very little room for error. The facing of the head and block must be perfect, or it will go again.
Cometic gaskets will take up small errors in the facing but aren't as strong.
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Old 17 Oct 2006, 12:32 PM   #6 (permalink)
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Got the sti top mount on just for now till i remap it well till it went bang. Buying forged pistons and rods where is best for the metal gaskets.cheers for the replies
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Old 17 Oct 2006, 04:53 PM   #7 (permalink)
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Originally Posted by WRXbart
Cheers for any help
All depends on how far you want to go and how much money your willing to spend....
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