Mercrusier 140-1986

[FatBack]

Got a good one here! I've got a rocker arm stud rising up or maybe I should say pulling out from the head. Does anybody no how to fix the problem without taking the head off. Standing by.

 

[johnkc]

Re: Mercrusier 140-1986

fatback , replace it with a new one and use plenty of permanent locktite.this may work,other wise you will have to drill and pin it in.

 

[FatBack]

Re: Mercrusier 140-1986

I can't keep the valve adjusted. Went boating today and the valve came out of adjustment again. It is now a 1/4in higher than the rest of the studs. Please help, I don't won't to take that head off again.

 

[Dhadley]

Re: Mercrusier 140-1986

Drill a hole in the base and drive in a roll pin. Or replace it with a screw in stud. You can drill and pin it without taking the head off if youre REAL careful. I would take the head off.<br /><br />Good luck!

 

[FatBack]

Re: Mercrusier 140-1986

What do you mean by pinning it?

 

[Dhadley]

Re: Mercrusier 140-1986

Drill into the base and through the stud and into the other side of the base on an angle. Drive in a roll or solid pin. Any automotive machine shop will know how to do it.<br /><br />An old stock car trick. Very old, I'm sad to say.<br /><br />Good luck!

 

[FatBack]

Re: Mercrusier 140-1986

Hey that's really what they are-race engines. Runnning at all those high RPM's. I ran dirt track and never had this problem on any of my eng. I'm old now and out of the loop. What size drill do recommend. The pin I can get at the hardware.

 

[Dhadley]

Re: Mercrusier 140-1986

I think we used to go with a pin about 1/3 the diameter of the stud so the stud wasnt weakened a bunch. make the hole just big enough that the pin has to be tapped in. You dont want it to fall in - or out!<br /><br />If the hole is oblonged too much a set of screw in studs may be in order. <br /><br />Good luck!

 

[FatBack]

Re: Mercrusier 140-1986

Thanks a bunch DHADLY= I'm out of here.