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port holes on mugello piston for reed value

Posted: Wed Jun 14, 2017 11:26 pm
by Kiwi
Hi Boys after bit of advice please as I have got to replace Mugello piston and my old Mugello piston had two oblong ports in the side of it for LTH Reed value, my question is, I'm I best cutting two in the new piston to same the shape as old one or would Oval ports or square ports be better ????? picture shows rubbing of old piston and the two ports were not identical and I presume they should have been , any advice appeciated

Re: port holes on mugello piston for reed value

Posted: Thu Jun 15, 2017 5:31 am
by garry inglis
Get in touch with Cambridge lambretta they love the mugello and they will sort you out

Sent from my SM-A320FL using Tapatalk

Re: port holes on mugello piston for reed value

Posted: Thu Jun 15, 2017 12:32 pm
by Stokie
Would an Imola piston not work?

Re: port holes on mugello piston for reed value

Posted: Thu Jun 15, 2017 10:40 pm
by Kiwi
Not sure if Imola piston would work, but Ive got a new Mugello piston just got to decide which shop window a cut into side

Re: port holes on mugello piston for reed value

Posted: Thu Aug 10, 2017 2:53 pm
by nellyboyo
Yes , an Imola piston will work fine, just did the same last month 8-)

Re: port holes on mugello piston for reed value

Posted: Mon Nov 19, 2018 11:19 pm
by Jeff T
I've a small block 198 phbh 30, I fitted an lth reed valve but didn't cut port holes, just doing a winter rebuild and was thinking of changing the piston to the Imola will it fit the 198

Re: port holes on mugello piston for reed value

Posted: Tue Nov 20, 2018 2:24 pm
by corrado
nellyboyo wrote:
Thu Aug 10, 2017 2:53 pm
Yes , an Imola piston will work fine, just did the same last month 8-)
Just not in Kiwi's 225 kit. :mrgreen:

Re: port holes on mugello piston for reed value

Posted: Tue Nov 20, 2018 4:09 pm
by corrado
Jeff T wrote:
Mon Nov 19, 2018 11:19 pm
I've a small block 198 phbh 30, I fitted an lth reed valve but didn't cut port holes, just doing a winter rebuild and was thinking of changing the piston to the Imola will it fit the 198
No, pretty sure the 198 Mugello uses a 66mm piston, the Imola is 64mm.
RB20, 66mm piston, may work but needs a 116 rodded crank plus you'd need to check piston crown to cylinder head profiles.

Re: port holes on mugello piston for reed value

Posted: Tue Nov 20, 2018 7:02 pm
by Scooterdude
To do the reed conversion on the 198 you Can use a 200 monza piston.