Manfred's TR1. Discussion Boards - Head gaskets

Welcome, Guest. Please Login or Register.

22.12.24 at 22:28:31

Manfred's TR1. Discussion Boards › TR1 Discussion Boards › General technical TR1 discussions
(Moderator: Manfred)

‹ Cams - prize?? | TR1 Carby ›

Pages: 1

Head gaskets - is copper an option? (Read 9210 times)

Lasse Ex Member	Head gaskets - is copper an option? 07.02.06 at 15:04:52 I have a 1981 TR1. with the old type of head gaskets. They seem fragile and I've been thinking if you could make new ones of massive copper instead? Perhaps they have to be made of the same alloy as the cylinder to expand at the same rate? If the are only about 3-4 mm thick the difference could be neglected - right?
Lasse Ex Member	head-gasket.jpg Picture below may be scaled. Click link or picture for original size \| Click here for all attachments
	IP Logged

Bri Ex Member	Re: Head gaskets - is copper an option? Reply #1 - 09.02.06 at 01:30:14 hello Lasse, I do not think it is totally the gasket materials fault these fail regularly. I have not looked at a TR1 cylinder properly but your pictures shows what I have been told - that the larger cc cylinders had their edges too close to the camchain shaft. This gave the gasket no support from behind as it does in the rest of the cylinder, and this turns into a point of weakness for the head gasket. I was wondering about getting a gasket to work by having something placed back to support the gasket. Huh tho I don't have any idea what!
Bri Ex Member
	IP Logged

Lasse Ex Member	Re: Head gaskets - is copper an option? Reply #2 - 09.02.06 at 11:31:28 I've read at the TR1.-site that you can weld a small "wall" to separate the head gasket from the cam chain tunnel. My idea was that if you put in a stronger gasket it would hold anyway -without the support of the welded part. On the new types (of cylinders) there are no groves so another option would be to fill the groove by welding and put in a new gasket of the one-piece type. It would add about 1 mm to the height but would it matter??
Lasse Ex Member	38o36.jpg Picture below may be scaled. Click link or picture for original size \| Click here for all attachments
	IP Logged

nanno TR1 Board Extraterrestrial Member Ich mags halt gern ned ganz so original... Posts: 2255 Gender: Bike: TR1, XT600, SR500-Gespann	Re: Head gaskets - is copper an option? Reply #3 - 09.02.06 at 15:12:27 Quote from Lasse on 09.02.06 at 11:31:28: ... It would add about 1 mm to the height but would it matter?? Definitely as your compression would go to hell if you don't skim the lower end for another milimetre to regain the compression-height! Best Regards, Greg
	Frei ist, wer frei denkt! http://greasygreg.blogspot.co.at/
	IP Logged

Lasse Ex Member	Re: Head gaskets - is copper an option? Reply #4 - 09.02.06 at 15:15:54 OK. Should I shave it off the top or the base of the cylinder?
Lasse Ex Member
	IP Logged

Bri Ex Member	Re: Head gaskets - is copper an option? Reply #5 - 10.02.06 at 13:50:00 Quote from Lasse on 09.02.06 at 11:31:28: I've read at the TR1.-site Hi Lasse this site or another? I would like to look at the article. My fear would be that the weld would come unstuck somehow if it heated and cooled differently from the surrounding area. Then fall onto the camchain and Kaboom! I was thinking more like having a pin or two drilled into that space. These new gaskets - what are they made of? The departure from metal (if they are not metal) is this because the new material is as good as the old gaskets or because the new engine produces less compression and then these lesser demanding materials can be used?
Bri Ex Member
	IP Logged

Bri Ex Member	Re: Head gaskets - is copper an option? Reply #6 - 10.02.06 at 13:57:02 Quote from Lasse on 09.02.06 at 15:15:54: OK. Should I shave it off the top or the base of the cylinder? Look at a schematic of the barrel - its like most bike barrels and has the sleeve protruding from the base. That would be difficult and costly I think to skim in comparison to the top of the barrel which is flat. I think skimming the top of the barrel or the bottom of the head would be the question. I dont know the answer btw
Bri Ex Member
	IP Logged

Lasse Ex Member	Re: Head gaskets - is copper an option? Reply #7 - 10.02.06 at 14:36:38 Quote from Bri on 10.02.06 at 13:50:00: Quote from Lasse on 09.02.06 at 11:31:28: I've read at the TR1.-site Hi Lasse this site or another? I would like to look at the article. My fear would be that the weld would come unstuck somehow if it heated and cooled differently from the surrounding area. Then fall onto the camchain and Kaboom! I was thinking more like having a pin or two drilled into that space. These new gaskets - what are they made of? The departure from metal (if they are not metal) is this because the new material is as good as the old gaskets or because the new engine produces less compression and then these lesser demanding materials can be used? Here is the article (from this site);https://www.tr1.de/tr1/press/motorrad_04-1993/mr-04-1993_pic3.jpg The old version are made of a composite of asbestos and metal. The new wersion of the cylinders are flat and use ordinary gaskets. I don't know if there are any metal in them.
Lasse Ex Member
	IP Logged

Pages: 1

Manfred's TR1. Discussion Boards › TR1 Discussion Boards › General technical TR1 discussions
(Moderator: Manfred)

‹ Cams - prize?? | TR1 Carby ›