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Main Bearings?

Old Marine Engine » Gray Marine Gas Engines - 4, 6, and 8 cylinder » Main Bearings? « Previous Next »

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Craig Passeno
Visitor
Posted on Wednesday, October 06, 2004 - 05:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Ive heard it was impossible to get these anymore, besides some folks in new york charging like 400 dollars a set. Is there any other source? I'm not exactly sure which model I've got, but all of a sudden it almost sounds like a faint rod knock. Can someone by chance identify my engine by means of a picture or casting numbers or something?
Thanks in advance!
Craig Passeno
passrdcc@triton.net
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andrew
Moderator
Username: andrew

Post Number: 925
Registered: 11-2001


Posted on Wednesday, October 06, 2004 - 05:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Isn't there a model number shown on the nameplate? It is probably a Continental engine and bearings should be available. Do you know the displacement?

Larry can probably identify it by the picture.
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Craig
Visitor
Posted on Wednesday, October 06, 2004 - 05:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

It is a continental. The nameplate on the exhaust manifold? I'll check and see. I think its a 162CI, perhaps a phantom?
Thanks!
Craig
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Craig
Visitor
Posted on Wednesday, October 06, 2004 - 06:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The plate on the transmission says model 620 below that, stamped, G2846.
On the bottom of the engine block, right above the oil pan F 400A 4 U 3
on the other side E95 CWC

There are other numbers cast all over the place, anything specific I should look for?
Craig
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andrew
Moderator
Username: andrew

Post Number: 926
Registered: 11-2001


Posted on Wednesday, October 06, 2004 - 08:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

There is a Gray Marine model 620:

  • 4 cylinders
  • 3-3/16 x 4-3/8
  • 140 cid
  • 60hp @ 3200
  • weight 525 lbs direct drive - 620 lbs reduction drive

I believe it was based on the F-140 Continental "L-Head" block. You should be able to find those continental bearings.
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Craig
Visitor
Posted on Wednesday, October 06, 2004 - 10:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Good to know, I can't thank you enough!
Craig
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 175
Registered: 07-2003
Posted on Thursday, October 07, 2004 - 12:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I agree on the ID.Thats the first F series i have seen with the distributor way back there.
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Craig
Visitor
Posted on Friday, October 08, 2004 - 12:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

How is 3500 for WOT on this little guy? I tried a bigger prop which kept the same top end (damn near 20mph) but only revved to 2800!
I thought I heard a rod knock and tore it apart only to find nothing... Apparently the rusty old shortblock I had really WAS all new parts, 30 years ago. I have the motor in a 1957 Lone Star 23 foot aluminum (outboard) boat. Its a good match @ 20mph and 5mpg.
Craig

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