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?

Re: 7.5.1 comp ratio
 

yeah you can use that, but if your looking for decent numbers all motor wise then start over

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

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?

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.

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?

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.

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?

Re: 7.5.1 comp ratio
 

i am guessing that you have vitaras

Re: 7.5.1 comp ratio
 

yep vitaras

Re: 7.5.1 comp ratio
 

sounds like cam timing, not ignition. you should of had your block milled like mine. I have 9:1 with my vitaras

Re: 7.5.1 comp ratio
 

true ,so if i use my adjustable cam gear i should be able to dial in stock ignition with retarding the cam?

Re: 7.5.1 comp ratio
 

yea, but the proper way to do it is with a degree wheel on the crank. I dont even know how to do it. I had .043" off the block and head. I set mine at 4* advanced.