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Thread: Rave Valves
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08-08-2007, 06:05 PM #1
Rave Valves
Was working on my jet boat this weekend and went to inspect the raves and to my surprise.Poped the covers off and they were melted. so I started taking them apart. I pulled the gilotine out and they were burt to a crisp.I guess the previous owner never serviced them.But holy smokes.
Anyway I ordered everything new. The question is what caused this. Im new to the 787 motors.
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08-09-2007, 11:06 AM #2
- Join Date
- Aug 2006
- Location
- Chicago Burbs
- Posts
- 552
You're sure they're melted - not just gunked up?
If your RAVES got hot enough to melt, then so did your pistons. Look down the RAVE guide to the pistons. Make sure the top/crown is in good shape.
Bryan
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08-09-2007, 06:53 PM #3
The motors have plenty of compression 145 to 150 psi in each cylnder.
I think the previous owner never had them serviced. They were pretty gummed up.
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08-09-2007, 07:14 PM #4
- Join Date
- Aug 2006
- Location
- Chicago Burbs
- Posts
- 552
Do you have any pics of the RAVEs?
I've seen engines with great compression that in fact had stuck rings. But then it runs for a couple hours and voila, scored walls and time for a bore/sleeve/re-chrome. It's worth the 2 little bolts to take those RAVEs back off, trust me.
Bryan
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08-10-2007, 12:01 PM #5
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08-10-2007, 06:52 PM #6
Just took the boat out.What a difference.Runs great. Jumps right up on plane 7000 rpms. Thanks Ibreakstuff for your help.I owe you one Bryan.
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08-10-2007, 08:05 PM #7
- Join Date
- Aug 2006
- Location
- Chicago Burbs
- Posts
- 552
Not a problem. You can take me out sometime on the Jersey Shores in it - I've seen movies!
Bryan
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