>Covering the oil hole behind the timing chain cover has been recommended to
>help with my extreme pulley/cover leak.
>
>I also have the rubber ring from SS.
>
>However, I have questions about plugging the hole.
>
>1. Can this be done with the engine still in place?
>There is room if someone has a good idea for plugging the hole.
>
>2. Is their enough oil for the chain once the hole is plugged?
>I assume the oil return holes at the bottom remain open and there must be
>enough oil vapour to help.
I am assuming that you are talking about the oil tube that feeds the chain tensioner rubbing block.
Cuting off all flow will probably kill your chain/cogs and tensioner block real quick, so this sound like a dangerous proposition.
The timing cover can be removed from the engine while still in the car. Its a lot of work, but if the engine is fresh and doesnt need additional work, its best to leave it in place. You will need to pull the radiator, and water pump to gain access to the timing cover.
It would appear though that some compromise can be made in the quantity of oil sent to the tensioner. I would remove your old oil tube, pull the spring and ball. Clean it up real good, measure the current hole. The braze the hole close. Drill a .030 or so hole in the spot that you brazed. If the end of the oil tube is open, braze it shut too, it just wastes oil pressure dumping it into the sump.
Another problem with poor oil control "at least on my car" is durring hard braking, oil from the sump comes foreward, and fills the timing cover throough an oil return hole in the first main bearing. Also, during really hard breaking, oil comes forward into the timing cover through a vent hole where the oil tube exits the timing cover cavity.
On my engines, I think I'm gonna put a one way baffle on the oil return hole in main#1, and blank off the vent up above.
sorry so long.
Jarrid Gross