Strocker motor
- Thread starter vwfan79
- Start date
hey guys, i got a question when changing over to a flat top piston. is there a advantage or disadvantage with the thin style rings for the flat top piston. i can see advantage in less drag on the cyclinder wall,but do they work well with a engine that is use just for riding everyday and not for racing.
Ok,thanks alot on the info vwfan79
What i am getting at is . I have new greyhound 6.5 and was thinking modifying the engine. One of the modification would be to raise the compression.
Going with a flattop and then could i go with .010 longer rod and have the piston stick up little. Would this work on a stock head that has not been milled and could i still use a thin head gasket. Ideal cam i was think was the isky 0--6000rpm cam, sorry i don't Have the lift spec of hand. Or is there more problems i could run into. Talking about clearance problems?
What i am getting at is . I have new greyhound 6.5 and was thinking modifying the engine. One of the modification would be to raise the compression.
Going with a flattop and then could i go with .010 longer rod and have the piston stick up little. Would this work on a stock head that has not been milled and could i still use a thin head gasket. Ideal cam i was think was the isky 0--6000rpm cam, sorry i don't Have the lift spec of hand. Or is there more problems i could run into. Talking about clearance problems?
From my experience a gray hound with +.010 rod and flat top piston will still be in the hole .010-.015. The wrist pin is higher up in the piston on a flat top. If your piston is out of the hole you need to know how much, you need to maintain that min clearance of .027. For instance if your piston is out of the hole .010 then I would run the .037 MLS head gasket giving you your .027 clearance. The cam your talking about has .275 lift black mamba jr. If your .010 out of the hole and you use the thin .010 head gasket you have 0 piston to head clearance, not ideal.
ok, is that using a flat top HONDA piston with thin rings
GX200 / Clone UT1 Thin Ring Short Skirt FLAT TOP Piston std
GX200 / Clone UT1 Thin Ring Short Skirt FLAT TOP Piston std
Should have the block back from the welder on Wednesday. He said there was some alloy that the welder didn't like and he had to acid wash the block and clean off the coating Honda bakes on there. He said he cut a channel out of the cooling fins and welded the brace right to the block, he also told me he was spooling welding it and the bore should not distort but he is gonna check it when done to make sure.
Copper fiber head gasket
Have you considered using a fiber and a copper, the reason i ask is the fiber has a fire ring inside it, and if you stack 2 fire ring gaskets which are designed to compress against a flat surface you will be asking them to seal against 2 ring faces.
It would seem to me that this would or could be unstable.
Id put the copper on the block side which has the cast iron bore for support and the fiber on the head side, where its fire ring can bed into the copper and the head.
Have you considered using a fiber and a copper, the reason i ask is the fiber has a fire ring inside it, and if you stack 2 fire ring gaskets which are designed to compress against a flat surface you will be asking them to seal against 2 ring faces.
It would seem to me that this would or could be unstable.
Id put the copper on the block side which has the cast iron bore for support and the fiber on the head side, where its fire ring can bed into the copper and the head.
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