MRC Forum- brought to you by www.morini-riders-club.com

Can anyone tell me the correct compression ratio for a 1966 Corsaro 150 and where I can get an oversized piston if needed?

Hello Dave.

The standard Corsaro 150 would be 9.8:1. The Gran Turismo (Touring) version would be 9.4:1.
Although I've never dealt with them, King of Piston seem quite promising...

https://www.thekingofpiston.com/collect ... oto-morini

Jenny.

Thanks Jenny, the bits you sent are great, best parcel wrapper ever! Compression is 60psi so a tad low….
Will check valve/tappets first but it may be worn bores. Might be settings as engine was supposedly fully rebuilt.
Fingers crossed

Hi Dave.

Glad to hear that the parts arrived safely. Good luck with the bike.

Jenny.

Morini Jen wrote: ↑11 Oct 2024 19:53 Hello Dave.

The standard Corsaro 150 would be 9.8:1. The Gran Turismo (Touring) version would be 9.4:1.
Although I've never dealt with them, King of Piston seem quite promising...

https://www.thekingofpiston.com/collect ... oto-morini

Jenny.

Kinbg of Piston is great. Happy to deal with the UK. Some useful accessories on his site too