?s for Clams or anyone.

[Gus Mortimer]

First my motor is a 1982 90L6, Clams if your out there I could really use your help. <br /> I have discovered water in the #5 cylinder. <br /> I found a post on this from january this year on the subject, with lots of great info in there. I (not getting any real answers here, OR from the SELOC manual) have decided that my leak must be in that exhaust cover or water jacket under there. <br /> I got the three gaskets from the dealer today and have removed all the stuff in there (cover, baffle plate and inner water jacket). I had no bolt problems SO far I have not seen any cracks but need to inspect closer. <br /> In the january post you said to replace the innermost plate Why do you do this? How do you remove the gasket material from the mating surfaces?? and finally IF after I do all this hoohaa, I am still getting water in there, is there any other place that water could enter the cylinder(barring me missing a crack or something)? <br /> Not really on the subject but I am not all that impressed with the seloc manuals direction in this area. there is no torq specs for my model, no bolt sequence for inner or outer plates and no real explanation of water paths through the powerhead. <br /> Thanks in advance for any help.

 

[KCLOST]

Re: ?s for Clams or anyone.

You have a cylinder head on that engine... (I need your serial number to check that myself, but I'm pretty sure you do). If so, that In my opinion would be the most likely spot for a leak..<br /><br />Water taveling around the cylinders and through the head gasket into the head can be the leak into the cylinders.... I'd find that the most likely.... Did you perform a compression check on the cylinders before you started taking it apart.... Don't worry to much about it, if it is... You might as well repair/replace all gaskets while you're at it....<br /><br />BTW, are you sure you have the correct manual... Most torque specs and sequences are in the back of the manual and not shown where the general assembly instructions are. Check the instructions again, they should tell you what table you need to view for torque and sequence.

 

[Gus Mortimer]

Re: ?s for Clams or anyone.

I did check compression and all was well(135+/-3lbs) I am pretty sure there is no head on my motor but I will double check. as for that book it is for all mercury engines from 1968-1989 and all hp ratings from 90-300. <br /> The powerhead section of that book refers me to the appendix for torq specs, where it then says for my specific motor "N/A". It does give lots of other specs for many other engines, just not mine.<br /> <br /> EDIT engine #6246880

 

[KCLOST]

Re: ?s for Clams or anyone.

You're right! it's just a cylinder block cover!<br /><br />You're heading in the right direction...<br /><br />I'm sure someone will help you with the torque settings... Probably somewhere around 150-200 in lbs. If I was guessing...

 

[Chris1956]

Re: ?s for Clams or anyone.

Jr. Boater, I have an older inline 6 merc. The torque sequence is from the center of the water jacket covers out. For example on the outer exhaust cover, tighten the two bolts in the very center (one in the carb of the motor, one in the spark plug side of the motor, no particular order), then tighten the two bolts directly above the center, then tighten the two bolts below the center bolts, then the next set of bolts above etc. I would tighten then about 1/2 way on the first pass and then finish the torque on the second pass. I do not remember the exact torque value, but it was standard for the bolt size (SAE 5/16-18). Mine was given in inch pounds. Since the bolts on the crankcase are the same size and grade, you can probably use those values.

 

[Gus Mortimer]

Re: ?s for Clams or anyone.

in another post clams does tell the torq at 200 in. its the bolt sequence that I really need. Chris I think I know what you mean but there are three lines of bolts from top down. you think I should just go acrost from center then alternate up and down?

 

[Chris1956]

Re: ?s for Clams or anyone.

Jr Boater, You have jogged my memory. There are three bolts sorta horizontal across the water jacket. You tighten all three in the center of the cover and then move up a set of three bolts. Then you move down a set of three bolts, repeating until you have done them all. 200 inch pounds sounds like too much, but my memory is a bit fuzzy.

 

[Gus Mortimer]

Re: ?s for Clams or anyone.

well I eventually took it to a guy here and he seemed to think that the bolts should be at 250in/lbs? He also put some RTV sealant on the gaskets. When he got toward the top of the cover, the gasket justkinda squirted out, loosen, stuff, tighten, squirt. anyhow it leaked. we did track my ignition stuff down to the stator. <br /> I will have to replace that gasket eventually but it is not leaking into my cylinder anymore. <br /> so on the water it scoots along about 45. YEA <br /> Now my bottom carb is constantly overflowing. Oh well. I just had them off for a good cleaning. I will just see.