[robtec]

i find a great deal on a set of a1 pistons. the cr calculator tell me to expect a cr of 12.5.i think that i can run this cr on 93oct. gasoline that Puerto Rico offers. what do you all think??

any one with this one setup???

 

[Guest]

thats some high ass compression. You could always use the poor mans octain boost... retard the timing

 

[robtec]

thats some high ass compression. You could always use the poor mans octain boost... retard the timing

hehehe

 

[FMYStreetRacer]

i am currently building a z6 with some pm7 pistons. i plan to run 93 oct and just retard the timing a bit. then when i hit the races just add a little race fuel and turn up the timing a bit. i would think that you'd be ok.

 

[robtec]

i also found a set of pg6b pistons,they seem ok, in what motor this this pistons came ???i do not know :?:

 

[FMYStreetRacer]

i think those are a6 pistons??????

 

[robtec]

any one??????

 

[fjt]

rob.. i have Pm7 pistons on a Y7/Z6 head combo and with P.R. 93 octane i had Pinging problems.. Not even retarding the Ignition ALL the way back could stop the pinging.

=(

this doesnt mean it will be your case but just giving you my experience

 

[robtec]

, i know that some people here are currently using pm7,p29,zc a1 pistons, what do i have to do to have a trouble free ride??

 

[Guest]

can you just put a1 pistons in an A6 block? or do you need work done?

 

[robtec]

yep,in fact they should work fine in a a6.11.5 cr no problems!!12.5 in my case problems

can you just put a1 pistons in an A6 block? or do you need work done?

 

[robtec]

i think that i going to buy the pm7 and shave a litle bit of material from the dome area to lower the cr.or use a cometic head gasket for turbo applications

i want to beat my brothers gsr now it is making 180hp and i am geeting preety far behind in the 1/4 mile department