TY175B piston recommendations?

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Jools
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TY175B piston recommendations?

Postby Jools » Sun Sep 06, 2020 3:06 pm

I think our rattly ol' Sammy Miller ('76 TY175B) deserves a new piston and rebore.
Anyone have any recommendations? A 'Yambits' one is about 30 quid, but it has to come from England.



Jools
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Re: TY175B piston recommendations?

Postby Jools » Mon Sep 07, 2020 7:41 pm

Anyone know anything about 'Forseti' pistons?



Jools
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Re: TY175B piston recommendations?

Postby Jools » Tue Sep 08, 2020 10:00 am

Next...
Q#1 Whats the max OS bore size for a TY175 B.
Q#2 Has anyone got a spare barrel with a couple of bores left in it!?

:(



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Re: TY175B piston recommendations?

Postby Bully fanatic » Tue Sep 08, 2020 8:05 pm

I can remember a lot of people were recommending the Wosner piston for the TYs a couple of years ago. I know Wiseco goes up to a 2mm oversize for Bultacos. Contact David Lahey as he is the TY Guru on this site. Graham.



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Re: TY175B piston recommendations?

Postby TrialsRoss » Wed Sep 09, 2020 9:57 am




Jools
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Re: TY175B piston recommendations?

Postby Jools » Wed Sep 09, 2020 3:34 pm

Oooh the pistons via Serco are a bit pricey. Forsetis are less than half the price.
Actually I think the barrel is just on first oversize, with wear, so we probably won't need another barrel. I'm encouraging my grandson to do this job, but advising etc via email isn't the easiest re getting accurate bore wear measurements. (He's locked down so I can't visit). Hoping we'll get away with +0.5. (2nd OS).



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Re: TY175B piston recommendations?

Postby David Lahey » Wed Sep 09, 2020 6:46 pm

The Wossner is the pick for the TY175 and you should be able to get a Wossner piston kit from an Australian supplier for about $AU200.
Wiseco is good quality too but made for being worked hard rather than for trials use.
If you do go for a cheapy piston kit, please let me know how it went because I've not known of anyone using one yet.


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Re: TY175B piston recommendations?

Postby Gomey » Sun Sep 13, 2020 6:36 pm

Has anyone used one of the Forseti brand pistons in their TY?




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