valve spring q

[Matt Weiser]

I'm changing valve springs (86 TR w/125k) and have one cylinder bank done. I'm using the compressed-air method. I noticed some air leakage apparently around the exhaust valve seats and out the exhaust ports on cylinders 1 and 5. Is this something to be concerned about? A recent compression check was good. Also, the leaking seemed to be reduced after I seated the keepers by tapping the valve stems.

Also, I had planned on replacing the valve guide seals with new ones from Poston's. But these were so obviously inferior that I left the stock seals in place. The Poston's seals didn't grip the valve guide at all it looked like they would move up and down with the valve. Very disappointing.

 

[salvageV6]

Felpro Viton seals should be available cheaply and locally at a "real" parts store. I would get some before doing the other bank.

The leaks prolly aren't an issue but perhaps a top engine clean is in order. Maybe carbon related?

 

[Matt Weiser]

Thanks for the reply. The leakage could definitely be carbon related as I could see a lot of buildup in there. A top engine clean is on my to-do list.