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Hey All,

I know these are getting rare, but i'm getting sick of looking at the mismatched pair on the back of my car. If anyone has one in fair condition please drop me a line and we can work out a price.

Cheers

So a bit of an update, the car has now done about 300 miles or so, including a return trip from Canberra to Goulburn, with out a problem. It seems the culprit was the rocker shaft itself. After replacing the whole front end of the rocker gear we haven't had any issues, touch wood. When rapcing the ...

A bit of feedback for everyone, after reassembling and inspecting for valve bind and other issues, we have determined that the rocker was shifting along the shaft towards the back of the car causing the push rod twist the rocker as it opened. I have just purchased a very good set of rockers so if it ...

Tim, originally I set inlet 8-9 thou and exhaust 12 thou. After speaking to you guys inlet is not 11thou and exhaust is 14thou, I'm going to let it run like that for a week or two and see how she is. I have broken number 1 inlet three times now and they all broke in the same way. Each rocker has ...

for your viewing pleasure. BTW Tim tried the bigger valve tolerances and the engine seems to be easier to start and have a little bit more poke, but i think only time will tell.

Thanks for the thoughts guys, I'm reassembling and setting the tappets tonight and might try your advice Tim. I am replacing the rocker shaft and all rockers and just for good measure the pushrod too. As for cam specs I have no idea but at idle it will settle down at about 900 rpm with twin ...

bootlegger wrote:Ive got a grey race engine in a boat. To reinforce the rockers they crimped metal over the rockers. Im not sure if it helps but i havent broken any.

Sound interesting, but what do you mean crimped? Any chance of a photo.?

Hey all, I'm hoping someone might have come across this problem and might have a solution. i have a mildly worked grey with about 1200 miles on it, During this time it has broken three rockers on number one inlet valve. When the engine was built the rocker shaft was machined and the bushes had good ...