Crank damper
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Crank damper
I was tinkering with the engine Monday night and noticed a tinny sort of knocking sound from the engine. Sounded like something inside the timing cover at first but after a bit of investigation spotted the outer part of the crank damper had slipped back and it Bananarama! the timing cover. Don't know when this happened because I couldn't hear it from the driver's seat, I was racing the car last Saturday as well. Anyway, ordered a new SFI approved damper from Summit, made by Cyco in Australia, and tested to 18000 rpm. Arrived yesterday and I spent the best part of today fitting it. There was no way this thing would fit on the crank. They're machined slightly undersize so it's a tight fit, the instructions tell you to boil it in a pan of water for 15 minutes before trying to fit it, but even hot it wouldn't fit. So I ended up honing a little at a time and trying again. Must have had it on and off about ten times, each time going on a little further, until it finally fitted.
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Anonymous
I don't have a small hone so I had to improvise. I found a small sanding wheel (flapper type) in me toolbox that was a nice fit. Stuck it in the drill and wrapped a strip of fine flatting paper round it. I used coarser and coarser paper until it started to actually remove some material. Think I ended up with 100 grit.
Thought about grinding paste as well, I've got some but couldn't find it.
Bye the way, I'd noticed that the old damper was a much tighter fit on the 440 Source crank than it was on the old engine. I think the tight fit of the new damper was a combination of the two, damper a bit small and the crank a bit big.
Thought about grinding paste as well, I've got some but couldn't find it.
Bye the way, I'd noticed that the old damper was a much tighter fit on the 440 Source crank than it was on the old engine. I think the tight fit of the new damper was a combination of the two, damper a bit small and the crank a bit big.