mk3 bottom end for a mk1

[finemk1]

pls pls if you choose to go for the 8v bottom end, get the pistons cut down for the valves like someone said befor or get a spacer and another head gasket to raise the head a few mm

hey vankronenburg whats the best choice pistons if you were to bore the 1.8 to 1.9 ?

[VanKronenburg]

pls pls if you choose to go for the 8v bottom end, get the pistons cut down for the valves like someone said befor or get a spacer and another head gasket to raise the head a few mm

hey vankronenburg whats the best choice pistons if you were to bore the 1.8 to 1.9 ?

If you use a spacer, you only lower the compression further - why would he do this

In terms of pistons, we like to use Mahle or JE; both will make any specification. 11.5:1 is the best street compression ratio for a mild tune 16v. It is both safe and provides a decent boost in mid range. It is possible to go right up to 13.5:1, but this requires modification to the block to set the head at an angle for valve clearance. Remember that the motor will run hotter if bored to 1.9 with higher compression: of course the compression boost creates more heat but there is also less space in the cylinder walls for this heat to be stored. A remote oil cooler is a good idea.

[finemk1]

If you use a spacer, you only lower the compression further - why would he do this Question

was recomended to me after i had a boo boo, i think he was as smart as me at the time and just looking for answers........ ie. not very smart hey

[Golfwise]

Fine it appears you used normal 8v pistons and the valves when open had no where to go but through them.Thats why 16v pistons are different You take too much notice of bad advice.