4cyl mercruiser 140

[bigomudders]

I have a 1979 berreta with the 140 4cyl but cant find that year motor anywhere. the problem I have is three of the cyl. head rocker arm studs are stripped what do I need to do to remove them? I work on autos never on a marine engine. Any help would be greatly appr.

 

[fat fanny]

Re: 4cyl mercruiser 140

Best bet is to trailer it or take the block to a engine machine shop and have them do it or hack saw! not advisable but possible. Iam sure the 3.0 is compatable to many years do a search here and Iam aure something will turn up. Good luck and welcome aboard

 

[bigskiohio]

Re: 4cyl mercruiser 140

they might be screw in so you might need a stud wrench.

 

[Bifflefan]

Re: 4cyl mercruiser 140

as a mechanic you know that the studs are just pressed in. they may or may not be cross pined. but you can fab up a puller to get them out. then the problem is getting the new ones back in. for that you need a big press. and the head need to be off the block. So the best thing is to take it off and take it to the machine shop you use and have them do it. save alot of time and hardache.

 

[bigskiohio]

Re: 4cyl mercruiser 140

i thought the were pressed that is why i said might be i know some are screw in but on what not sure. you are right machine shop be your best bet. pretty rare for that to happen?

 

[mkast]

Re: 4cyl mercruiser 140

pretty rare for that to happen?

No really.

 

[VE4PN]

Re: 4cyl mercruiser 140

The serial number for that engine is on the side of the block just above the starter motor. There are a couple of sites on the Internet where you can check the serial against the year. I have a 1969 Starcraft Chieftain with the 140 HP engine. It is a 181 CID GM motor so look under that heading for the year against your serial number.

Dave

 

[VE4PN]

Re: 4cyl mercruiser 140

I should have said we own a machine shop. How much of the stud is still above the metal? If flush or below then drill a small hole in the stud, use an easy out to screw it out. If it is enough to grab then use locking grips. I don't believe they are pressed in as most studs have a thread so you can remove them.

Dave

 

[mkast]

Re: 4cyl mercruiser 140

I don't believe they are pressed in as most studs have a thread so you can remove them.

Most GM studs are pressed in.

 

[bigomudders]

Re: 4cyl mercruiser 140

Thanks for all the help. I guess I'll take the head off and take it to a machine shop. I only paid $50 for the thing YEP the whole boat and trailer. so a little investment wont hurt.

 

[mkast]

Re: 4cyl mercruiser 140

I only paid $50 for the thing YEP the whole boat and trailer. so a little investment wont hurt.

You just keep telling yourself that.