| Author |
Message |
Larry (Larry)
Junior Member
Username: Larry
Post Number: 88
Registered: 3-2001
| | Posted on Monday, March 17, 2003 - 9:51 pm: | |
oops, 2 & 3. |
Mark Eberhardt (Me_k)
Member
Username: Me_k
Post Number: 424
Registered: 5-2002
| | Posted on Friday, March 14, 2003 - 9:18 pm: | |
I used wedges and it took 7 hours for the first one with 1 stud stuck and 11 for the second with 3 studs stuck. I have never beaten anything that hard in my life. The heads survived fine just needing .003" flycut off to clean up wich they needed anyway to remove corrosion, but I damaged the lip on one of the cylinder linders and had to replace it. Good luck. |
Larry (Larry)
Junior Member
Username: Larry
Post Number: 87
Registered: 3-2001
| | Posted on Friday, March 14, 2003 - 6:24 am: | |
if rebuilding; stuff rope in 3&4 and 6&7. |
JohnR. (Rivee)
Junior Member
Username: Rivee
Post Number: 168
Registered: 1-2002
| | Posted on Friday, March 14, 2003 - 2:41 am: | |
Erik, I tried a porta power with the wedge end on it. But only tried it on one end of the head and didn't want to push too hard for fear of cracking it. What did you use for leverage for the wedge? |
matt (Matthewmag)
New member
Username: Matthewmag
Post Number: 29
Registered: 11-2002
| | Posted on Thursday, March 13, 2003 - 11:07 pm: | |
The problem is that you never know how stuck it is until you've unstuck it. I'd avoid using wedges - they might work but if they don't, damaging the head and the block will make you regret not having made a plate. The only plate I've seen rested on the studs and pulled on the head via all the ports. It was big and heavy and to make it involved a fair bit of machining too. I've seen plates for other cars that pull the head using metal rods that screw into the spark plug threads. This would be lots easier to make although if a head's really stuck you might even risk damaging the plug threads which won't help you much. Is it ridiculous to suggest spark erosion? That would work but I've not seen anyone with gear big enough to immerse the whole engine though. If it's really stuck you'll probably be thinking of more ridiculous ideas than that. On the other hand you might be lucky. Good luck. |
Erik R. K. Jonsson (Gamester)
Member
Username: Gamester
Post Number: 293
Registered: 11-2000
| | Posted on Thursday, March 13, 2003 - 8:13 pm: | |
I worked on one that took 2 " < " style port a power wedges. We worked both ends at the same time and it finally popped loose with both of us pumping the porta powers furiously. |
John S Brown (Brownyjs)
New member
Username: Brownyjs
Post Number: 5
Registered: 2-2002
| | Posted on Thursday, March 13, 2003 - 6:06 pm: | |
John, I had a similar problem with my 308 carb. engine. I tried penetrating oil, hanging the engine from the heads, using a steel head puller plate etc etc all to no avail. The problem was a build up of aluminium oxide had siezed the heads onto the studs. The final solution for me was to make up several tools using 14mm bimetal hole saws and extending their length to the 60mm depth of the head and then working the saws down around each of the studs until the head puller was effective. This was a big job and took time. Be careful using wedges as you really don't want to bend enything. In my case either the wrong coolant had been used or the coolant was not replaced often enough or possibly a previous owner had used a chemical weld additive to over come a failing headgasket.
Good luck |
'75 308 GT4 (Peter)
Advanced Member
Username: Peter
Post Number: 2588
Registered: 12-2000
| | Posted on Thursday, March 13, 2003 - 3:47 pm: | |
Sorry John, I have no idea about Rutland's motors... |
JohnR. (Rivee)
Junior Member
Username: Rivee
Post Number: 165
Registered: 1-2002
| | Posted on Thursday, March 13, 2003 - 3:00 pm: | |
Peter, after putting oil in the cylinders I turned the motor by hand, not with the starter. Plus I am planning on rebuilding the complete motor anyway.
Do you know how good the motors at T Rutlands are? |
'75 308 GT4 (Peter)
Advanced Member
Username: Peter
Post Number: 2587
Registered: 12-2000
| | Posted on Thursday, March 13, 2003 - 2:49 pm: | |
Yep, only ten nuts. I don't quite trust the system of inserting objects or liquids into the combustion chambers to push heads off. Unnecessary stress for the rods and bearings. Your best bet is the plate. |
JohnR. (Rivee)
Junior Member
Username: Rivee
Post Number: 164
Registered: 1-2002
| | Posted on Thursday, March 13, 2003 - 2:39 pm: | |
I've read past posts on this subject but there has to be a somewhat reasonable way of removing the heads on a 308 carb motor.
I've tried to wedge it off with a wood wedge, I've put antiseize on the studs, I put oil in the cylinder and cranked over the motor, but nothing. What else can I do besides making a steel plate template to fit over the head?
There is only 10 head acorn nuts correct?
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