the head on my ld9 had to be milled down .026, which would bump compression to somewhere around 10.5:1 anyone know of a place to get a thicker head gasket to restore my compression to the stock 9.5:1, or maybe even tuning options. on a pretty tight budget btw. thanks

i milled .020 and ran fine for 10k on the stock tune

you can get the cometic head gasket .070 thickness which is about .030 bigger than stock... but you run the risk of it leaking between the layers

dear god .026?! if you gotta go that far i think its time to get a new head all together.

a whole point in cr? did they cc the head before and after to confirm that?



180hp in 1989 or 145hp in 2002, you decide. >

speedline02: when you did run that with the .020 were you using the stock headgasket or a cometic? also what happened after 10k?

z yaaa: yeah it was warped .015 between cylinders 2 and 3, so i guess it took .026 to fix it. no they didn't cc the head before and after i just did some quick math and roughly that is what it came out to

i ran the stock gasket for the 10 k... after 10k i built my bottom end and rebuilt the head... i'm still on the .020 shave, and at first i ran a .030 cometic gasket (which is .014 smaller than stock), however i had cam noise (that at time i couldn't pinpoint until i tore it all down) and i replaced it with a stock gasket... (i'm now also running high compression pistons and 1mm oversized stainless valves)

make sure you put a brand new timing chain on... they like to stretch and with that extra play, you'll hear something on an old chain...



Edited 1 time(s). Last edited Tuesday, July 27, 2010 6:37 AM

the first time around, before you rebuilt the bottom end, were you using premium gas?