tony17 Posted April 30 Posted April 30 head skimmed on kats head, finding it difficult to get a thicker gasket. anyone? Quote
Gixer1460 Posted April 30 Posted April 30 Why not do the easy way and use thicker or multiple base gaskets? 1 Quote
tony17 Posted May 1 Author Posted May 1 i have no idea. wasn't done by me. its with a garage at the moment,they say they're struggling to get a gasket ,don't know if thats true or not? just trying to find info on how easy or hard it is to get one. Quote
Duckndive Posted May 2 Posted May 2 On 5/1/2025 at 5:55 AM, tony17 said: i have no idea. wasn't done by me. its with a garage at the moment,they say they're struggling to get a gasket ,don't know if thats true or not? just trying to find info on how easy or hard it is to get one. Have they said why they need a thicker gasket Valve / piston clearance maybe ? 1 Quote
coombehouse Posted May 2 Posted May 2 If they've only skimmed the head a small amount, maybe 0.5mm or less, it's unlikely to need a thicker gasket unless you are running lumpy cams. 2 Quote
Duckndive Posted May 2 Posted May 2 5 hours ago, coombehouse said: If they've only skimmed the head a small amount, maybe 0.5mm or less, it's unlikely to need a thicker gasket unless you are running lumpy cams. Yes that was my thought Quote
tony17 Posted May 15 Author Posted May 15 On 5/2/2025 at 10:15 AM, coombehouse said: If they've only skimmed the head a small amount, maybe 0.5mm or less, it's unlikely to need a thicker gasket unless you are running lumpy cams. i don't know how much was skimmed, can they measure somehow to find out ? garage will know i'm sure . he been working on jap bikes 50 years so i would hope so. he did show me the old gasket and to be honest it only looked less than a mil thick a flimsy paper looking thing not like the base gasket ( not that i would know how thick it should be ) but thanks for that info ,thats lifted my spirit abit Quote
tony17 Posted May 15 Author Posted May 15 On 5/2/2025 at 9:45 AM, Duckndive said: Have they said why they need a thicker gasket Valve / piston clearance maybe ? head skimmed ,oil leaking all over, this will be the third time its been replaced,i'm told head has no cracks either Quote
Gixer1460 Posted May 15 Posted May 15 If someone has a standard head in the shed, they could (if they were nice!) and they had a set of digital calipers, measure the depth of the whole head from cylinder face to rocker cover gasket face. Do the same on the 'suspect' head and you've got the amount skimmed off so far! Simples! 1 Quote
Reinhoud Posted May 16 Posted May 16 On 5/2/2025 at 7:15 PM, coombehouse said: If they've only skimmed the head a small amount, maybe 0.5mm or less, it's unlikely to need a thicker gasket unless you are running lumpy cams. With lumpy cams you want a higher CR, with very lumpy cams you get actually less power on a stock CR Quote
Reinhoud Posted May 16 Posted May 16 16 hours ago, tony17 said: head skimmed ,oil leaking all over, this will be the third time its been replaced,i'm told head has no cracks either That has nothing to do with the thickness of the gasket. What kind of gasket was used previously? Quote
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