Have oil leak at base of cylinders head

[rikkitabaras]

I have a 1979 cb750k that has a oil leak at the upper base of crank case where the head meets the case. Looked it up on the net and on some 750's have that problem. I found a site that has the manual on how to fix the leak but with limited tools I can't do the job myself. My question is, does anybody out there know of a good machnic here in the Dallas Tx area?

 

[crazypj]

If it's sohc it's simple job which is pretty major as engine has to come out to fix it.
You can't get head off with motor in frame
Motor weighs about 212lbs.

 

[Rocan]

If it's sohc it's simple job which is pretty major as engine has to come out to fix it.
You can't get head off with motor in frame
Motor weighs about 212lbs.

79 is dohc unless if its a 78 or earlier titled as a 79... right?

pull the motor. do the job yourself. the mechanical knowledge you gain will stay with you forever. also a good tool set from craftsman will cost you way less then the job.

 

[crazypj]

Can't remember if you need to pull motor on DOHC 750, you have to on DOHC 900 as motor is taller.
They are also heavier than sohc motor and a real pain to fit and remove.
DOHC is also a bit more complicated as there are two cams, cam chains and tensioners.
It's usually a good idea to change cam chain on DOHC if it has over 20,000 miles (they don't usually break but rattle around and saw slot through cylinder)
Would probably be better to take a dohc to someone who has worked on them previously (although it wont be cheap)
I wouldn't do it for less than $600.00 as I know whats involved (I did a lot of them in mid eighties)

 

[VonYinzer]

PJs right. Its a pain in the ass to pull a 750 motor, especially if youre doing it by yourself, and dont really know what youre doing.

Rocan is also right. It can be done and is a great skill building exercise. But if you cant, you cant. No shame in that.

If youre unable to though, Im sure there are plenty of mechanics in your area that can do it.

No matter who does it, make sure the needed materials are in hand BEFORE you start the job. Nothing worse that waiting for backorders or slow shipping with a motor in pieces.

 

[rikkitabaras]

It's a dohc no I don't have to pull the motor out, I do have to remove the 4 inner rear cyl studs one at time and seal them using high temp sealant. the only thing I have to replace is the sealing washers