torque specs for my 1977 70 hp water jacket cover

[greasemonkeyozi]

I had recently done a complete motor overhaul on this motor in the past, and used the same water jacket gasket that was on it to begin with. "This motor has been overhauled once be4, not 2 long ago so the gasket was still good." I was doing my normal weekly preventive maint. on my motor and noticed a leak on the bottom of the water jacket cover while the motor was idling with my muffs on. I whipped out my rachet set and torqued the bottom 5 bolts about 5-10 lbs tighter and it slowed the leak down to a needle thin stream of water, not really bad at all. I lent my manual out to a friend and cant get the torque specs to see if i had done the torque right to begin with so if someone would, give me a hint. I had installed this plate as if it was a head gasket on a car thinking thats the best way. One more question, can good RTV be used on this gasket to seal that small leak?

 

[The Marine Doctor]

Re: torque specs for my 1977 70 hp water jacket cover

I do not have the spec's infront of me but you can use a sealer..provided gas does not damage it.<br /><br />TMD

 

[y2j]

Re: torque specs for my 1977 70 hp water jacket cover

on my thunderbolt there 70pounds<br /><br />But then again mines a nut and bolt combo<br /><br />I used sealer on mine with the gasket.. You can see my thread right now http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=035008 <br /><br />Funny though i set my torque wrench to like 35-40 pounds held it on the end and turned and didn't hear no click and i screwed up the bolt which i had to replace.

 

[y2j]

Re: torque specs for my 1977 70 hp water jacket cover

Any specific ways in using a torque wrench?

 

[y2j]

Re: torque specs for my 1977 70 hp water jacket cover

oh btw.. To answer your problem the gasket you got it junk and u gotta get a new one and squish it down plus use sealer just incase like i did

 

[greasemonkeyozi]

Re: torque specs for my 1977 70 hp water jacket cover

70 lbs will deffinatly break the bolts, heck, 35 lbs would propably break them. Yeah, whenever its time to change out my Impeller, plugs, and fuel filter, I'm gonna change out that gasket. Lets see, does that cover get really hot? Im not sure, If it does, I'm gonna use that black permatex. If not, what about the red? What goes best with this part of motor?

 

[greasemonkeyozi]

Re: torque specs for my 1977 70 hp water jacket cover

Y2J, you might need to have your torque wrench callabrated. Although, 35 lbs is alot tighter than you think. Just think, the an oil pan gasket on a car made of rubber or cork calls for 10 lbs on the mounting bolts. When you use your torque wrench, Hold the wrachet end with one hand to keep it even, and use the other for your leverage. If its tilted when using it, it will throw the torque all off and will mess up your nut or bolt head. Take it and practice it on the lugnuts on your car, you will see what im talking about.

 

[CU2NITE]

Re: torque specs for my 1977 70 hp water jacket cover

If I were you I would just buy a new water jacket gasket. I believe they are under 10 bucks. It's always best to use a new gasket when one has been used, put the new one on dry and it shouldn't leak. Also I think you need to torque it at 70 inch pounds(70inch pounds NOT foot pounds!), but I'm not sure on the sequence(its in the manual).<br />Good luck<br /><br />---------------------<br />RUNNING THE MOTOR WHILE LISTENING TO THE HORN WILL MAKE YOU MORN!!

 

[greasemonkeyozi]

Re: torque specs for my 1977 70 hp water jacket cover

It will be like mounting a head on a car, start with the middle bolts, tighten about 1/2 of what the manual torque specs call for, and work my way to the ends. Then torque all the way starting in middle and work my way to the end. <br /> Hey Doc, can you confirm this?