BSA Owners' Club Forum

General => The Star and Garter => Topic started by: Mike Farmer on 07 December, 2017, 10:45:11

Title: Hepolite pistons
Post by: Mike Farmer on 07 December, 2017, 10:45:11
 :)

Hi. My son bought a pair of "Hepolite" pistons for an A65 project. The engineer doing the rebore said that they are not genuine Hepolite.

He contacted the seller and was told that Hepolite was bought out by another company but that his new ones were indeed genuine.

So any ideas on this?????????
 
Advice or comments much appreciated.

Mike  8) 8)
Title: Re: Hepolite pistons
Post by: JulianS on 07 December, 2017, 13:42:14
There are new "hepolite " pistons on the market.

I think from Wassell.

They come in a repro hepolite box.

They are very cheap, around 100 and the rings are reputed to be very poor quaity, (my own experience with an A10 was that the rings had not bedded in in over 1000 miles and were fit only for scrap) some sellers will sell the pistons but replace the rings with Italian made GPM ones due to quality.

Old Hepolite will have a number inside which can be looked up in the old catalogues and decent rings. And cost around twice as much.





Title: Re: Hepolite pistons
Post by: Mike Farmer on 07 December, 2017, 16:26:58
 :)

Thanks for that.

Mike 8)
Title: Re: Hepolite pistons
Post by: Mike Farmer on 09 December, 2017, 10:51:04
 :)

Hi What symptom did you have to suggest that your rings weren't bedded in. Loss of compression--smokey exhaust==fuel/oil droplets in exhaust.

Would be nice to hear if anyone else has had the same problem.

Mike 8) 8) 8)
Title: Re: Hepolite pistons
Post by: JulianS on 09 December, 2017, 12:23:33
Edges of the rings showed only partial contact, not bedded in,  after just over 1000 miles - changed the rings to NOS Brico which bedded in very quickly.

Link takes you to a bit more information about new hepolite;


https://burtonbikebits.net/pistons/
Title: Re: Hepolite pistons
Post by: Mike Farmer on 09 December, 2017, 13:10:44
 :)
Thanks again

Mike 8) 8)