The BSA A7-A10 Forum

Bikes, Pictures, Stories & more => Wanted & For Sale => Topic started by: Rocket Racer on 05.01. 2020 22:20

Title: anyone have any Std hi comp pistons ?
Post by: Rocket Racer on 05.01. 2020 22:20

I'm just about to fit some +80 gandini's to my race engine (the highest comp I could find) but the compression is a bit low at 8.25 so I'm starting to think I may resleeve the bores and a set of high comp's might encourage me.
I'd love a set of high comp +80's but something from 10.5 to 14:1 in standard would be nice (methanol engine).

I have some 14:1 +20 but a shame to skip a std size.

Title: Re: anyone have any Std hi comp pistons ?
Post by: Klaus on 06.01. 2020 06:26

Hi Tim,

these look like 10.5

https://www.ebay.de/itm/NOS-Mondial-STD-Slipper-Pistons-Rings-And-Pins-BSA-650-A10-Pre-Unit-543/133292124653?hash=item1f08d469ed:g:E0UAAOSw2oheDnzr

cheers Klaus

Title: Re: anyone have any Std hi comp pistons ?
Post by: Rocket Racer on 06.01. 2020 07:50

Klaus,
 yes did see those, wasnt convinced they're 10.5 but must be close. Might need to buy them anyway...
Cheers
Tim

Title: Re: anyone have any Std hi comp pistons ?
Post by: Rocket Racer on 30.01. 2020 01:56

I'm going to stick with +80's for the time being!