.020 over bore?

[kreepscort]

im going to be rebuilding my new 6 bolt engine and im gono go with the kit that machv sells... but i was wondering if the .020 over bore option they have is worth it??? will i get a good amount of horspower... is there any machine shop work needed? thanks

 

[DSMJim]

Originally posted by kreepscort
im going to be rebuilding my new 6 bolt engine and im gono go with the kit that machv sells... but i was wondering if the .020 over bore option they have is worth it??? will i get a good amount of horspower... is there any machine shop work needed? thanks

A .020 over is about the thickness of your fingernail. Increasing your size to .020 over is only because you need to clean up your cylinder walls beacuse honing alone will not do it. A .020 over is not for HP. Somebody here could likely explain the difference but if our stock displacement is exactly 2000cc then .020 over would increase it to like 2008cc (or something like that) which isn't gonna make any difference at all.

Even going to a 2.1L which would be 100cc would hardly make any difference in power. Maybe 10hp tops?

 

[Suparata]

Originally posted by kreepscort
im going to be rebuilding my new 6 bolt engine and im gono go with the kit that machv sells... but i was wondering if the .020 over bore option they have is worth it??? will i get a good amount of horspower... is there any machine shop work needed? thanks

First you need to see what options you have in terms of sizes after the block has been checked by your machinist . Yes to do it right you should go oversize because it is the only way you can get things back in spec. Before buying anything talk to your machinist and have him do all the things the right way because certain things will be never done right if you are doing them yoursaelf.