Best dome size (cc) for pump gas

[southside]

What is the overall best dome size for pump gas 93 octane on a stock bore motor. Looking to buy a cool head for my trail bike and have never really ran pump gas in any of my bikes in the past.

 

Thanks in advance for any help.

[southside]

Not really wanting to do all that for a stock motor with bolt on's just looking to use the pro design domes and wanted to get the best working cc

[sprinklerman]

Why not? They are about the same price.

[dirtydownunder]

custom domes make the difference or running higher comp without chance of detonation.

[DUSTY05]

20cc would be good...

[southside]

I didn't know they were the same price I guess I will have to do that

[southside]

Any builder recommendations to go through to get a pair cut?

[possum]

more often then not "custom" domes are premade from trial and error. Not to you're motor. Every builder has predetermined specs for certain builds and needs of the customer. Like they have a dome for each size motor they like 95% of the time. Some builders like more or less band width, some recommend smaller cc domes, some like different squish clearance etc....

 

This doesnt mean they are not good domes. just ask questions. There has been plenty of custom domes "for a motor" sold that detonate or blow motors up.