Scooterotica

can the barrels be taken out to a larger cc as cast and if so what piston would be used as its droipped a ring on zorst prot so needs something doing to it

I'm in the same boat mate - what I'm doing is 71mm wiseco H2 piston but depends on the damage - other pistons are available, there's probably an MB one that's perfect if you don't want to change the rod.

Sounds Familiar that..:


I contacted these: http://www.pjme.co.uk/acatalog/Cylinder ... eving.html

They have said they could re-sleeve the barrel for £120.00 +vat to suit self supplied piston.
So for less than the cost of a new kit you could have a potentially solid kit afterwards with plenty of re-bore scope if required.

I am going to get mine done sometime in the near future- I'm looking for a suitable piston first though....anyone??

Agent Buchwald wrote:I'm in the same boat mate - what I'm doing is 71mm wiseco H2 piston but depends on the damage - other pistons are available, there's probably an MB one that's perfect if you don't want to change the rod.

I looked into a 71mm Racetour but I think thats it if anything else happens - no rebores

Dazza wrote:Sounds Familiar that..:


I contacted these: http://www.pjme.co.uk/acatalog/Cylinder ... eving.html

They have said they could re-sleeve the barrel for £120.00 +vat to suit self supplied piston.
So for less than the cost of a new kit you could have a potentially solid kit afterwards with plenty of re-bore scope if required.

I am going to get mine done sometime in the near future- I'm looking for a suitable piston first though....anyone??

please forgive my ignorance but if its resleeved wont it still be suseptable to dropping a ring?

The rings shouldnt catch as easily if you fit a decent piston after its sleeved that uses good quality wire rings as they can span the exhaust port with greater internal strength.
I managed to pick up a couple of Japanese pistons for two of my own barrels today, both pistons complete with rings cost me only £45. one is a TS 250 Suzuki 70mm piston for £10, which I will fit to my Rapido when its re-lined, most Probably use a Vespa APE rod, 60mm stroke crank.
The other piston was an (ART) Yamaha IT 175, 66.25mm for £25 & Genuine rings for £10... I bought the Yam piston off an Irish guy on the outside pitch, he had a couple of boxes of Genuine Yamaha pistons (ART) he must have had 60 maybe 80 pistons for sale, all in original boxes for £25 each.
I asked if he had any rings for them, said he had left most of them back at home with the other two boxes of pistons...

Don't suppose you got his details?

Joe, what piston was in it? An escorts by any chance?

I've replaced mine with a new Rapido with an asso piston and dare I say it - so far so good

Dazza wrote:I looked into a 71mm Racetour but I think thats it if anything else happens - no rebores

so I'd be pushing it fitting a 1st oversize [71.5mm] wiseco ??

Dazza wrote:Joe, what piston was in it? An escorts by any chance?

I've replaced mine with a new Rapido with an asso piston and dare I say it - so far so good

as far as i know daza it was an asso one i just give it to me mate who will give it to dogspeed to fettle
hoping to drop the gp in over winter to get sorted
so wanting some ideas on what to do

was wondering in taking it out to house a larger piston altogether but as you know i know very little