pdd

iTrader: (3)

there .008 out. so with a cometic gasket .045 my quench should be .037 right?? that would be my best shot with a stock bore right guys????also im milling my afr down to 60cc, then with the flycutting of the pistons(.060) i should be back around 62cc which should bring me back to around 11:1.i plan on doing it right this time guys, so learn from my mistakes

Beast96Z

iTrader: (21)

Sounds just right. I guess Cometecs are the only .045 gasket out for stock bore?

z-ya

iTrader: (1)

Felpro .043 .

John B

iTrader: (10)

I would take things a step further. If you are satisfied with the camshaft that you have, don't look at the static compression ratio (SCR), focus on the dynamic compression ratio. With the efficiency of your AFR's you should be able to push the DCR close to 9:1, that's what I would focus on....not your 11:1 static number! Then you'll be up there with the "Big Dogs"!

SideStep

Good deal... I measured mine two days ago and got .007 to .008...

Beast96Z

iTrader: (21)

The felpro's only come in a big bore, not stock bore, right? 4.100 I believe it is?

NLang

iTrader: (12)

I'm right there with what John B had to say. Forget about your static, and figure out how much chamber volume you'll need to bring your DCR up around 9:1. If you're picking up the dynamic compression, you may want to think about lowering your quench heigth even more which will help with detonation. If you use the Cometic .041/3.910 gasket, you'll bring your quench heigth down to .033". That'd be fine for someone not reving over 7k, while helping with performance. I know someone with a .026" quench heigth and his piston doesn't start to contact the head until 7000rpm-and that's ever so slightly and with factory internals...The smaller 'squish' area will cause more turbulence inside the chamber as the piston head and cylinder head deck sqishes more of the fuel charge into the head chamber. That'll provide a more complete burn which makes for a better/more solid explosion and may also cool some of the rough spots that could end up as detonation causing hot-spots. That's more pwr and even better economy if you think about it...
Kind of detailed? Sure, but do it right the first time. Or should I say second time?...

WS-Sick

Good luck, pdd. I hope everything works out like you want it to this time.

pdd

iTrader: (3)

[QUOTE=John B With the efficiency of your AFR's you should be able to push the DCR close to 9:1, that's what I would focus on....not your 11:1 static number!
[/QUOTE]
how do i figure DCR???

NLang

iTrader: (12)

http://www.kb-silvolite.com/calc.php?action=comp

pdd

iTrader: (3)

thanks

z-ya

iTrader: (1)

Nope stock bore also talk to tsp about them, lots cheaper than cometic but not mls construction.

pdd

iTrader: (3)