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Old 14 June 2010, 05:08   #11
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Originally Posted by blueboy758 View Post
and the engine i have used and pushes a 5.5m rib with 6 divers along very well.

Yep i am sure it does....
We are only trying to help! I am sure you dont want any comebacks from selling an engine with poor compression and passing if off as being 5 years newer than it actually is.

As NOS points out if those compressions are PSI then your rings are shot,
however if they are % then thats not as bad however, assuming that the two good cylinders are 140PSI then the lower one is 125PSI, that could be a sign that one cylinder has run with a partially blocked main jet and scuffed slightly, or a ring is broken. I am afraid a compression result like that doesn't tell you too much, it could run for many many hours like that,
it may even come back to 100% if its a gummy ring, or worst case scenario, if its a broken ring, the ring could exit the exhaust port and its "Goodnight Vienna"

If I were you I would give it a good run and re test the compressions,Hot and Cold, get the year right, and re-advertise it. It will probably be a good engine for someone.
Good luck with it
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Old 14 June 2010, 11:52   #12
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Yep i am sure it does....
We are only trying to help! I am sure you dont want any comebacks from selling an engine with poor compression and passing if off as being 5 years newer than it actually is.
I don't think he's gonna sell it on RIBnet thanks to you guys!

I think you lot should have PMed him first and pointed out his errors and let him correct them in reasonable time before posting comments on his for sale ad.
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Old 14 June 2010, 13:53   #13
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I don't think he's gonna sell it on RIBnet thanks to you guys!

I think you lot should have PMed him first and pointed out his errors and let him correct them in reasonable time before posting comments on his for sale ad.
I know your'e probably right, but he did ask in post 3.
I just answered the question he posted prompted by sams comment.
I am sure he will sell it, it looks tidy enough, he just needs to verify the compression test results and get the year right.
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Old 14 June 2010, 14:58   #14
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I know your'e probably right, but he did ask in post 3.
I just answered the question he posted prompted by sams comment.
I am sure he will sell it, it looks tidy enough, he just needs to verify the compression test results and get the year right.
It was a bit of a public airing, I knew you all meant well and you're all forgiven

Just for future reference
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Old 18 June 2010, 07:41   #15
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whilst i value all of your comments and it's excellent you all have a large amount of knowledge and willing to help, hightower hit the nail on the head for any future reference, thanks mate.

i would like to thank you all tho for your valued experience. the engine is now sold.


Phil.
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Old 18 June 2010, 08:10   #16
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Though RIBnet?
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Old 18 June 2010, 17:59   #17
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Though RIBnet?
Well, no bids on ebay:

http://cgi.ebay.co.uk/Mariner-75-/25...item3a5bec0205
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Old 19 June 2010, 17:22   #18
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Or they could have been cylinder leakage results, in which case 2 were bloody amazing and one was only bloody good

free
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