This is what I am planning. I just got another GS-R motor. I want to go high compression again but plan on spraying on it as well. Can I do 12.5:1 forged pistons with pump gas? I plan on spraying 80-100 shot direct port. I am pushing it with the compression with the spray? Do you think it will hold up? If not what compression would be safe?

P.S. I know this is the all motor forum. Not sure if will spray or not for all that are going to say I'm in the wrong forum.

 

^^

 

I think that your compression is way too high to run nitrous safely. I wouldn't do it.

 

hey dan i know of many settups running 12.5:1 comp on spray..on race gas though.. but all motor they run fine on pump with good tuning and the right size injector...jose can tune those settups very well.

 

Ya. I;ll see abbout Jose helping me out with it. Don't want to put it togethere than end up blowing it up. Before I spray i wanna finish the complete allmotor build.

So far this is what I'm getting:
Eagle rods
CP 12:5.1 standard bore (as long as my block is fine that I have)
Clevite bearings
Ferrea spring and retainer kit
stainless high comp valves ( micht bump comp by .2 to .3 I think)

Gonna prob be around 12:8.1 comp Not sure if will be ok on pump gas? What do u think?

This is the head I bought http://cgi.ebay.com/ebaymotors...36079

I also need to sell a gs-r head complete from intake mani, to fuel rail, tb and all sensors, stock cams, and valve cover looking to get around $600 bills if u know anyone that might want it let me know. If anyone on hondatech wants it email me @ fastasseg@bellsouth.net do not pm me can't reply back to them yet still a trial user

 

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Gonna prob be around 12:8.1 comp Not sure if will be ok on pump gas? What do u think?
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if jose is tuning he will get it to work! just fine