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Head gasket TV175 3

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Head gasket TV175 3

Postby Peterp » Mon Apr 06, 2026 10:00 am

Hello,
Can I open up a head gasket? Reason is that my barrel is 63.2 and will probably end up 64mm. The gasket fitted, which of course will get replaced, is 61ish, it creates a “lip” over the barrel edge.
Any ideas please?
If you read this Paul, I’m not ignoring you, you have gone over and above in helping me, I didn’t want to keep troubling you. Thank you for all your help so far.
Pete
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Re: Head gasket TV175 3

Postby hullygully » Mon Apr 06, 2026 11:02 am

Peterp wrote:Hello,
Can I open up a head gasket? Reason is that my barrel is 63.2 and will probably end up 64mm. The gasket fitted, which of course will get replaced, is 61ish, it creates a “lip” over the barrel edge.
Any ideas please?
If you read this Paul, I’m not ignoring you, you have gone over and above in helping me, I didn’t want to keep troubling you. Thank you for all your help so far.
Pete

yes you can open it up bud
have you tried a RT195 head gasket, that'd be a 65mm
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Re: Head gasket TV175 3

Postby Peterp » Sat Apr 11, 2026 7:43 pm

Apologies Hullygully, should have thanked you earlier for the reply, cheers.
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Re: Head gasket TV175 3

Postby Knowledge » Tue Apr 14, 2026 10:47 pm

Peter, try measuring the squish before fitting a head gasket. My TV175 head clearance was HUGE so I didn’t fit the head gasket.

The head gasket won’t blow if it not fitted.
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