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Makotosun

New cylinder head gasket needed?

  • jmagda
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New cylinder head gasket needed? was created by jmagda

I am replacing my DT3's points (a no-spark issue in another post on here) and it looks like I will have to reset/check TDC again. Will I have to replace the cylinder head gasket, which is brand new and has never experienced this engine having been run with it? The manual says every time you take off the cylinder head to replace the gasket.
08 May 2024 07:45 #1

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Replied by Gr8uncleal on topic New cylinder head gasket needed?

Try it and see.

If it seals, then good. If it blows, then replace it.

Shouldn't apply to your nearly new one, but some folks anneal and re-use their old ones.
08 May 2024 07:58 #2

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Replied by Ht1kid on topic New cylinder head gasket needed?

I agree with AL I would reuse it if you have some copper coat spray some on your gasket
08 May 2024 08:35 #3

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Replied by MarkT on topic New cylinder head gasket needed?

If it's copper, generally can be reused.  Annealing also generally wouldn't hurt if copper.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
08 May 2024 08:39 #4

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Replied by jmagda on topic New cylinder head gasket needed?

Yes, it's copper. Thanks, guys.
08 May 2024 09:11 #5

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Replied by RT325 on topic New cylinder head gasket needed?

Not old style copper asbestos sandwich that they used to be?. Solid copper?.
08 May 2024 14:57 #6

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Replied by jmagda on topic New cylinder head gasket needed?

Don't know about that. It was from Yambits, GSK163, kind of a puffy copper gasket.
09 May 2024 05:19 #7

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Replied by RT325 on topic New cylinder head gasket needed?

Ok, so its this one. I wouldn't anneal it as will just be thin copper over asbestos. Maybe not asbestos in the modern age but something sandwiched in between.
I just grease them & refit them.
I do anneal solid copper though. That's my thought anyway.
yambits.co.uk/dt1cmx-cylinder-head-gasket-p-138498.html
Last edit: 09 May 2024 05:50 by RT325.
09 May 2024 05:47 #8

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Replied by jmagda on topic New cylinder head gasket needed?

Yep, that's the one. Oh. Grease? Didn't know about that.
Last edit: 09 May 2024 06:11 by jmagda.
09 May 2024 06:10 #9

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Replied by RT325 on topic New cylinder head gasket needed?

It's just what i do & 'i think' it lets them squash up tight. Just a theory but works for me.
09 May 2024 06:35 #10

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