Dart Valve stem seal
Posted: Thu Sep 05, 2019 1:40 pm
Question about valve stem seals
I’ve been looking through past posts about valve guide seals; I found one about using viton in a 'mini' stem seal part LJQ 101160 which is of interest. My Dart engine is showing smoke when the throttle is closed, so maybe the inlet valve guide is leaking oil. The valve guides were fitted a while ago and were supplied by DMG and came with the black rubber seal to attach to the ‘modified’ valve guide.
At the time when I fitted the guides I decided to omit the seals as they seemed a very tight fit on the valve stem. Now with some oil burning it might be better with a seal fitted (such is life).
Looking at the ‘DMG rubber mini? seal’, the through hole is nominally 7mm, which is close to the mini valve stem diameter of 9/32”. My question is ; is there a viton seal for the Dart stem 5/16” (8mm aaprox) which would be a better fit ?
Rgds Brian.
I’ve been looking through past posts about valve guide seals; I found one about using viton in a 'mini' stem seal part LJQ 101160 which is of interest. My Dart engine is showing smoke when the throttle is closed, so maybe the inlet valve guide is leaking oil. The valve guides were fitted a while ago and were supplied by DMG and came with the black rubber seal to attach to the ‘modified’ valve guide.
At the time when I fitted the guides I decided to omit the seals as they seemed a very tight fit on the valve stem. Now with some oil burning it might be better with a seal fitted (such is life).
Looking at the ‘DMG rubber mini? seal’, the through hole is nominally 7mm, which is close to the mini valve stem diameter of 9/32”. My question is ; is there a viton seal for the Dart stem 5/16” (8mm aaprox) which would be a better fit ?
Rgds Brian.