Gaskets and O rings needed for cylinders?

[suecanada]

LRB has his cylinder heads off now and these will be sent to Ted Porter in CA. at the Beemershop as per Oak Okleshen's recommendation. I really enjoy emailing Oak...what a great guy! Taking cylinder heads off was easy and the only part that needs attention is bagging or boxing the parts with their respected sides and whether they are intake or exhaust parts and labelling everything.

Where I am being lazy is this: I am wondering what o-rings and gaskets I will need to refurbish the cylinders from the engine block out. I already have new pushrod seals. I haven't looked yet, as the bike is 30 miles away at a friend's for winter storage while the valve work is getting done, but will I need cylinder base gaskets on the '83 R65LS? I have read it may not be fitted with one. How does one go about sealing this when the time comes for reassembly?? What is this hylomar or whatever stuff?

What I have found now is that I can FEEL and sorta see that the left exhaust valve seat sits EVEN with the casing while the right exhaust valve seat stands PROUD  of the casing. Boy, it's not much of a difference but there is one. I guess this is telling me something. It was the left valve clearance that has been closing up way too fast...like Rob's...in 500 miles! All the rest were prettty stable between checks.

Another probing question!  Each pushrod its own unique ring marking in the centre of the rod...it was a shiny pattern as if it had been rubbing on something and it got buffed! The buffed area was even all the way around and as I said each rod was differently buffed.  Any ideas what caused this???

I have got to get back on the forum more often. Now that winter will be closing in shortly, I will have no possible excuses!

[Bob_Roller]

Sue,
Seems like a long time since I've seen a post from you !

 Here's the part numbers that you will need :
 
 11111262141    4 each o-rings   for the cylinder hold down studs.
 11111337567    2 each o-rings   for the cylinder base.
 11121337818    4 each molded rubber seals for the pushrod tubes.
 11121338716    2 each cylinder head gasket.
 11121338426    2 each rocker arm cover gasket ( if needed ).


 As far what to use for sealing, all of the rubber parts only require a light coat of oil or something similar to petroleum jelly, to ease the installation, especially the o-rings so they don't roll out of their groove and get cut or twisted.
 The cylinder head gaskets , get a sealant especially made for cylinder heads, make sure you get the areas that the long cylinder studs go through, if you don't get it sealed properly, it will leak oil that goes to the rocker arm area.


 The polished areas of the pushrods most likely were  caused by the cylinder head gasket. It can move a little bit on installation, so most likely it wasn't centered . Next time you get back to the bike, insert a push rod and see if the polished area is about in line with the cylinder / cylinder head joint.


 The riding season is winding down by you, and the best part of the riding season has just started here !
 At 2 pm today, it's 91 F (33 C). morning low was 53 F. (12 C.), so we get some pretty wide temperature ranges this time of year .

[not-so-fast-ed]

Sue,  
Can I ask how many miles you have on LRB, and if this is the first valve job it's had?
I'm still looking for a R65 and have been told that valve seats on certain models can wear prematurely.
Just one more thing to take into account when shopping.
Thanks,
Ed   :-/

[Bob_Roller]

Ed,
The problem with valves/seats was a problem with the '81-84 and maybe the '85 model year, I'm not quite sure.
I think it was a problem with all model bikes made in that time frame.
My valves and seats were replaced at about 45,000 miles.
I was changing the timing chain, and had to remove the finned nuts holding the exhaust pipe into the cylinder head, first time they had ever been removed, so needless to say I stripped the threads off of the exhaust spigot of the head.
After removing the head to have the threads repaired, I checked the valve faces, and they were severely worn.
The shop that did the work said that I had about 7-10,000 miles before one of the exhaust valves would have failed.

If my memory is accurate, I think Sue has about 80,000 miles on her LS.

[Justin B.]

Sue, Bob's list is what you need.  As far as sealing goes, this is the way I've done on the past few.

1.  Hylomar on the cylinder to block mating surface.  Some use a very thin coat of silicone or similar.
2.  Hylomar on the stud O-rings.
3.  Hylomar on the outer surface of the pushrod seals and oil on the inside where the tube goes.
4.  K&N Copper Coat on the head gaskets.  Normally, nothing is used on head gaskets but an old mechanic told me to use this stuff 30 odd years ago and I have never had a gasket blow or leak.  It is a spray on sticky binder with very fine copper particles in suspension.  Helps seal and also (my presumption) aids heat conduction.

I have some very slight cylinder base weeping but nothing that really dirties up things or leaks.  

[Ed Miller]

So Oak recommended Ted Porter to do the work?  I thought Oak did that stuff himself, so that's interesting.  I was probably going to use Ted anyway, when, sigh, my time comes.  Ted is the one who rebuilt my tranny, and I like him.

[suecanada]

Thanks everyone..that really helps. LRB has 85,000 miles on him and there was some valve work done some 40,000 miles ago by the PO but as Oak says and wonders..did it include changing to the valves with the new metallurgy designed for the unleaded that really worked. I'll see how I do finding the right gasket goos you mentioned.  I think I read that I have to be really careful about not getting goo in places/ports that oil is suppose to flow through. Go easy is the word....sorta like the moly grease we put on the rear spline....just enough and NO more!  

Oak does valve work but not right at this moment as he has had to move shop and hasn't set up for valve work quite yet but he's in business for all other jobs.  Oak also said he was never tooled up for the smaller and unique R65 valve work and says he has always sent them out to Ted Porter and recommends him highly.  Regarding my question to Oak about when it comes time to worry about LRB's transmission, Oak told me to just watch for metal flakes/shards on the magnetic drain....the gunk stuck on the drain should feel like baby powder.  I suppose there may be lots of other things that could come apart in the tranny that could stop a bike, isn't there?  Does it all HAVE to get broken into little pieces or can't it just fall off??? :-/ :-?  I figure if anything stops LRB on the road and I have to stay around a place for awhile that it wouldn't be so bad anyway. Make new friends!! But I gotta say I would be pretty scared to break down in those searing hot desert areas I was riding through this summer!  Some places I think I'd go mad! [smiley=mad.gif]

Well I should be more active on the forum now that winter is high.  It was a nice 42 deg. F when I left at 11:00am this morning to attend our Vintage Motorcycle meeting. I need and love that old 1984 Eclipse electric vest. If I had to get another one I'd get the jacket nowdays and a thermostat would be nice too...I got one setting...scorch!! Just kidding!  [smiley=ROTFLMAO.gif]

[Justin B.]

Sue, I thought you were going to have Bruno's do your valves?  Is there anything the collective should know that changed your mind?

[Rob Valdez 79 R65]

This is how I did my installation, but I am not a mechanic, and I am marginal at what I am, but here goes:

I started to put some Hylomar on the crankcase, and it was so messy, and the area was hard to work, so I just cleaned everything up and installed dry.
I did not put anything on the o-rings (it never occurred to me).  

It has been a year and a few thousand miles, and no leaks yet (that I can see).

Bob, I don't know what you are talking about sealant for the head gasket.  I have always installed them dry, and again, no leaks this time, and it is very evident at the head joints.  Since I had my heads done, I have not had any of those bothersome valve cover gasket leaks. !