Engine Rebuild ?'s
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Joined: Oct 2007
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Engine Rebuild ?'s
Howdy all!
I am rebuilding a 1969 1600cc 57 horse single port engine. This is the first for me. I already have it torn apart. The case needs to be align bored, I need a new crankshaft, and then back together it goes. I have a Big Bore rebuild kit from JC Whitney that will increase the displacement to 1650cc. I also have a new high performance camshaft from Engle Cams.
My question is, with having a high performance camshaft that allows greater lift, will I need new rocker arm sets. I know that they will allow even more lift, but is it necessary?
Joined: Oct 2007
Posts: 286
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RE: Engine Rebuild ?'s
Your stock rocker arms will work just fine, infact they are what
you want with the cam, but the valve adjustment will be at a different thickness than the factory adjustment, usually more clearance. On the big bore kit, years ago wehad a 88mm kit and
it would increase the cc but the engine had less power, they were
just not a correct thing to do. The bug engine should not go over
9.1 to 1 compression ratio if you want it to stay together. The engine was built for economy instead of power so it's not strong
enough for a lot of build up.
you want with the cam, but the valve adjustment will be at a different thickness than the factory adjustment, usually more clearance. On the big bore kit, years ago wehad a 88mm kit and
it would increase the cc but the engine had less power, they were
just not a correct thing to do. The bug engine should not go over
9.1 to 1 compression ratio if you want it to stay together. The engine was built for economy instead of power so it's not strong
enough for a lot of build up.
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