 Leaking valves, Ahrghhh! |
 May 26, 2015 - 9:18 PM
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 Enthusiast  Joined Jun 21, '14 From Ottawa, Ontario, Canada Currently Offline Reputation: 0 (0%)  |
My efing valves are leaking! I lapped them down to the right height as suggested by delta cams. Now after installing the valve springs I poured some paint thinner in the ports to do a leak test and the thinner is coming out through the valves and into the combustion chamber. Any thoughts?? What did I do wrong?
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Replies
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May 28, 2015 - 9:05 PM
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 Enthusiast Joined Nov 21, '05 From Tacoma, WA Currently Offline Reputation: 7 (100%) |
They should seal, there isn't a break in with valves like there is rings.
It takes a lot of elbow grease to lap the valves by hand. What I do is chuck a bolt in a hand drill with a rubber bumper on the end and let that spin the valve. Not so fast that it slings the compound off and not so much pressure that the compound gets oozed out. I usually check it with brake parts cleaner and it will hold that. Did you get the valve seats refaced or are you just lapping in new valves? |
Posts in this topic
doory100 Leaking valves May 26, 2015 - 9:18 PM
Bitter Well valves don't seal 100% when they're f... May 26, 2015 - 9:47 PM doory100 that's what I thought. are you sure? May 27, 2015 - 5:23 AM Smaay what did you set the valve clearance too? May 27, 2015 - 9:30 AM Bitter I'm assuming you have a nice even gray band al... May 27, 2015 - 10:58 AM doory100 QUOTE (Smaay @ May 27, 2015 - 10:30 ... May 27, 2015 - 6:46 PM Bitter Might need more than a wipe with a rag, try a spra... May 27, 2015 - 8:11 PM doory100 Ok but should they be water tight or do they need ... May 27, 2015 - 9:38 PM Bitter I think they need to run a bit first, you've g... May 27, 2015 - 11:01 PM Box Like already mentioned make sure all of the compou... May 28, 2015 - 1:07 AM enderswift the pressure of compression and combustion helps s... May 28, 2015 - 7:12 AM doory100 I lapped in new valves with a drill. The drill had... May 28, 2015 - 10:06 PM TerryE You might want to take your head in and have it do... Jun 2, 2015 - 1:32 AM TerryE P.S. Don't watch Youtube so much. Jun 2, 2015 - 1:42 AM doory100 the only reason for the drill was that I had to se... Jun 5, 2015 - 10:45 PM doory100 Here are some pictures of the valve stem seats.
... Jun 5, 2015 - 10:52 PM Smaay what valves are those? they are NOT OEM Jun 7, 2015 - 10:00 PM
doory100 no there not oem. Why are you jealous?
Got them t... Jun 8, 2015 - 11:31 PM |
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