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7.5.1 comp ratio

Old 01-23-2006, 08:43 PM
  #1  
1.0 BAR
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Default 7.5.1 comp ratio

can i even use this setup? i have already put the motor together can i still obtain decent hp numbers with this setup and geta better head later...ie y8?
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Old 01-23-2006, 08:57 PM
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Default Re: 7.5.1 comp ratio

yeah you can use that, but if your looking for decent numbers all motor wise then start over
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Old 01-24-2006, 01:11 AM
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Default Re: 7.5.1 comp ratio

boosted it will be ok not the best but do able. 1st gen eclipses have like a 7.8 cr so it is possible to make big power on a low cr but it will take longer to spool the turbo and will be slow as ---- off boost
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Old 01-24-2006, 02:51 AM
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Default Re: 7.5.1 comp ratio

What setup is that?I assume you have already hunted down the thinnes head gasket you could find as well?
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Old 01-24-2006, 12:57 PM
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Default Re: 7.5.1 comp ratio

Well the good new's is you can run a ton of boost on crappy gas and still make some good numbers.
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Old 01-24-2006, 03:42 PM
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Default Re: 7.5.1 comp ratio

well here is the other problem TIMING...lol...so i just dropped my a6 a full 2 points of cr...so i should double timing correct...it would make sense....the motor only runs on 32-35 degree of timing? so wtf?
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Old 01-24-2006, 03:56 PM
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Default Re: 7.5.1 comp ratio

I cant say for sure with your set up, but I have a low compression motor also. I have the timing at stock N/A and run over 17psi with out getting any knock on pump gas.
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Old 01-24-2006, 07:59 PM
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Default Re: 7.5.1 comp ratio

yeah then why wouldnt mine run on na timing....it misfires and shakes and ----...lol...i guess maybe i should try cam timing retard my cam until i can get the dizzy close to stock na timing?
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Old 01-24-2006, 10:51 PM
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Default Re: 7.5.1 comp ratio

i am guessing that you have vitaras
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Old 01-25-2006, 08:54 AM
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Default Re: 7.5.1 comp ratio

yep vitaras
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