Forum

[Alan R]

Hi guys and DEAN, glad you're still with us old son..OK, going by your reply you have the "Classic" problem of squashed washers gripping the long-stud threads.(just realised that's a v. poor pun back there !!)---- Yep, fully agree with NORM at this point re}---- weld a nut onto the studs----remember protect the surrounding area against splatter... MARK M --- I also had that idea in mind but I think NORM's welding should prove less stressful ( and no chance of filings going into the crankcase area)......When DEAN eventually DOES get this head of ( and he WILL----) there's going to be a very big International shout of "HOORAY !!" I suspect....

[Mark M]

Alan, Amen to that! This will be the longest runner of all the stuck heads we've had I reckon! REgards, Mark

[Roy B]

This is how they do it in India..... not for the squeamish!!! Good luck , Roy B

http://www.youtube.com/watch?v=M_WD5m9R ... re=related

[Mark M]

Great video! Notice when the head comes off (about 2:13,) the amount of alloy swarf left on the studs. Interesting that the older chap refits one of the sleeve nuts and taps back down on the head. I guess this is pushing the jammed washer back straight and clearing the stuck alloy on the studs. Useful tip!
REgards, Mark

[Dean]

Dear Roy - the video from India was the ticket. Got me a 4x4 and a tire iron and pried that bugger off. No damage done and the threads on the head studs were covered with metal shavings, but once cleaned up look fine and the cap nuts thread on easily. Just as I thought, the exhaust valve is trashed. The washers are realy distorted, see what you guys were talking about - will definately order Hitchcocks washer set. Plan to replace valves with competition set by H and drop an 8:1 piston and rings in it. Been getting mixed messages regarding cylinder honing. Any advice?
My next project will be new seals in the gearbox - tired of spotting the driveway. Will be contacting my new friends (you) to get advise if I get stuck.
Your advice and friendship is valued.
Dean

[Alan R]

-------------ALTOGETHER CHAPS >>>>>>>>>>>>>> HOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO------RRRRRRRRRRRRR-----------AAAAAAAAAAAAAA-----------YYYYYYYYYYYYYYYYYYYYYYYYYYY !!!!--- and it's all down to the old fella at an Indian roadside !! ----- I know I keep asking but is it at all possible to post some photos of the head and, in particular the state of the valve and its seat damage ???---- I bet you feel better now DEAN ????

[Dean]

Alan - I am about as adept at trechnology as I am motorcycle repairs - my son will be home from college this weekend and I will have him download some photos - wish I had videoed the process, but if it had failed I didn't want any reminders.
For valve seat removal do I need to get the OEM tool, or can I go about it another way?
See, I'm not out of your hair just yet.
Thanks again to you all, Dean

[Mark M]

Well done Dean! As a note, when you have recovered the old washers from their beds, run a drill down each of the stud holes in the head, I can't remember off hand what size it needs to be but give it about 1/16" of clearance on the studs. That should help in future!
REgards (and Happy Christmas!) Mark

[pilot]

Hi Dean,
congrats on getting head off. Now order new valve seat, valve and valve guide and take to an engine reconditioner to mate all. I would do both inlet & exhaust at the same time to avoid future problems.
John.

[Alan R]

Hi DEAN--------- if I might add to PILOT's input ?? Have a look at recent thread "Different Seats" and in particular the posts from GURU where he mentions about a source of HARDENED seats available in the USA.... As far as I'm aware Hitchcocks don't advertise their seats as "hardened", only "European Made" so I assume they are to original spec. ?? Please don't quote me---that's just an observation from the catalogue.