Ijustwanttoseethephotos
Registered user
I replaced the heads and barrels on a 1981 R65 today and encountered a few problems!
I fitted new pushrod tube rubbers but after torqueing the RHS head found that the front face of the front pushrod tube rubber hadn't contacted enough to seal itself properly, (rubbers fitted with the line facing downwards).
I removed everything and offered up the RHS barrel without the rubbers fitted and found that the tubes are not central side to side with the holes in the crankcase.
The rear tube has it's largest gap at about 1 o'clock and the front tube at about 2 o'clock instead of both being at 12 o'clock as per the fattest part of the rubber.
Rotating each pushrod tube rubber clockwise correspondingly appears to have enabled them to seat evenly but I can't find a mention of anyone else having encountered this problem.
The barrels and pushrod tubes are original and have been fitted to their original sides, they have been off before but everything looks to be 100%.
Looking at the assembled barrel/crankcase the tubes are clearly not central side to side, the front one being 'worse' than the rear.
Is this just an anomaly with the R65 engine?
I fitted new pushrod tube rubbers but after torqueing the RHS head found that the front face of the front pushrod tube rubber hadn't contacted enough to seal itself properly, (rubbers fitted with the line facing downwards).
I removed everything and offered up the RHS barrel without the rubbers fitted and found that the tubes are not central side to side with the holes in the crankcase.
The rear tube has it's largest gap at about 1 o'clock and the front tube at about 2 o'clock instead of both being at 12 o'clock as per the fattest part of the rubber.
Rotating each pushrod tube rubber clockwise correspondingly appears to have enabled them to seat evenly but I can't find a mention of anyone else having encountered this problem.
The barrels and pushrod tubes are original and have been fitted to their original sides, they have been off before but everything looks to be 100%.
Looking at the assembled barrel/crankcase the tubes are clearly not central side to side, the front one being 'worse' than the rear.
Is this just an anomaly with the R65 engine?
