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DougF
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I was helping a friend over the weekend with his engine trying to ready it for the trip to Pittsburgh for British Car Day. We had to put a HeliCoil in the head for a pedestal stud because the PO had stripped the hole.
Once the job was successfully completed, we set the valves. After several minutes of running, the engine started to clatter. Upon investigation, we found that the gaps had closed on several valves.
He had sent the rocker shaft and tappets for rebuild to the left coast a month ago and we were installing them when we found the strip problem. He had sent the works out for rebuild because of an increase in valve/tappet noise.
This is not a Triumph, but engines are engines. When we found the stripped stud, I believe the final torquing was it's last call, he eked it in as tight as possible and let it go at about 12-15 instead of 20lbs torque. When we started the engine, we found after shut down that antifreeze was seeping up past the stud, could have been more than a seep we can't say for certain.
Anyway, we found that the engine had made a fairly large amount of oil. We aren't sure if this oil was made over the long or short term, since the engine was making the noise prior to the rocker assembly rebuild.
When he left for the show on Saturday, after a few miles he had to turn for home due to excessive valve clatter. Since the drive, he still can't keep a consistant valve gap.
With this little bit of history, what are the symptoms to the new engine(about 1,000 miles)/new oil formulation problems? Or could this be a problem caused by antifreeze slowly seeping into the sump? The car has maybe 15-25 miles and several minutes idle time since the noise first became apparent last fall. The engine has an 8 pint sump and we are guessing that it made about 2 qts. The car has been on the road for four years. Oil changes annually with no previous traces of antifreeze.
Before we pull the engine, which isn't an easy task on this car, does any one have any ideas? The car is a Healey 100. I know this is the wrong site, but like I said, engines are engines.
He has run the engine from the beginning with 10W-40.
Any thoughts would be appreciated.
Once the job was successfully completed, we set the valves. After several minutes of running, the engine started to clatter. Upon investigation, we found that the gaps had closed on several valves.
He had sent the rocker shaft and tappets for rebuild to the left coast a month ago and we were installing them when we found the strip problem. He had sent the works out for rebuild because of an increase in valve/tappet noise.
This is not a Triumph, but engines are engines. When we found the stripped stud, I believe the final torquing was it's last call, he eked it in as tight as possible and let it go at about 12-15 instead of 20lbs torque. When we started the engine, we found after shut down that antifreeze was seeping up past the stud, could have been more than a seep we can't say for certain.
Anyway, we found that the engine had made a fairly large amount of oil. We aren't sure if this oil was made over the long or short term, since the engine was making the noise prior to the rocker assembly rebuild.
When he left for the show on Saturday, after a few miles he had to turn for home due to excessive valve clatter. Since the drive, he still can't keep a consistant valve gap.
With this little bit of history, what are the symptoms to the new engine(about 1,000 miles)/new oil formulation problems? Or could this be a problem caused by antifreeze slowly seeping into the sump? The car has maybe 15-25 miles and several minutes idle time since the noise first became apparent last fall. The engine has an 8 pint sump and we are guessing that it made about 2 qts. The car has been on the road for four years. Oil changes annually with no previous traces of antifreeze.
Before we pull the engine, which isn't an easy task on this car, does any one have any ideas? The car is a Healey 100. I know this is the wrong site, but like I said, engines are engines.
He has run the engine from the beginning with 10W-40.
Any thoughts would be appreciated.