Small block tuning
Hi guys and girls... Just built my nova engine it's a c14se with .5mm overbore
And x14xe style pistons fully lightened and balanced bottom end
Lightly skimmed head and block 3angle valve cut Kent ast19 cam
Solid lifters and double valve springs it all runs very close in there and
I have a problem with it blowing head gaskets.
We're can I buy a high compression gasket? Can't find one anywhere.
Thanks Warren
http://www.ferriday.co.uk/ they will make one for you.
Or you could try ARP head studs. Has your block been decked too perhaps that isnt flat. That said that engine is used in lots of competition engines and I dont see them having issues with gaskets even up to 190HP.
sounds like a bit of a beast that engine, whats it kicking out ? like 120 ?
It's should be powerful if I can get it run in without it popping the Gasket on no4. Cylinder. Ill have it rolling roadrd and the carb set up. I know people use the engine alot but they don't normally use the high compression pistons in that set up. All I can boil it down to is too much compression.
I'd stick a new hg on have it set up straight away on the rollers. Your carbs could be really weak causing over heating and hg failure. What carbs u got on there? There was also a revised tightening sequence for small block heads. Did u measure the CR, if so what is it?
any idea what the comp is ?
I didn't measure comp ratio tbf. School boy error. It had about 17 bar on our gauge according to my step dad. But I don't trust his readings. The rules we race under say we can only use the pierburg 2e3 pain in the ass carb.
If it's going on only one cylinder every time i would be looking at checking the flatness of the block and head while it's apart anyway. Have you also put a tap down the threads to clean them out to make sure your getting the right torque settings?
Check the sparkplugs for signs of running lean, if the head gaskets going due to that then the sparkplugs should be showing signs of melting.
Is it melting the head gasket or blowing it apart? the way it's failing should give an indication whether it's pressure related
It's making the metal ring around the cylinder go oval and blowing out the coolant seal directly above it.
i assume you are doing all the basics, like new head bolts each time with lightly oiled threads, gm or elring gasket etc....
would there be any gain using a 1.6 gasket?? simply cos its bigger diameter
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