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Warkton Tornado No.1 wrote:Not quite “How long is a piece of string” type question, but piston choice is often limited by factors you need to take into consideration.
The first priority for you must be to select a piston kit that is compatible with a chrome bore, so therefore the rings need to be suitable. Also consider whether pistons are graded sizes for the RT kit.
Pistons suitable for piston porting narrows things further.
Compression height & crown profile also need to be taken into consideration along with gudgeon pin diameter.
There’s no doubt that you might be able to select an excellent kit intended for a motorbike/snowmobile/jetski @ a really good price that will serve well, but it all depends on how much compromise you are prepared to make
a-teamlambretta wrote:Warkton Tornado No.1 wrote:Not quite “How long is a piece of string” type question, but piston choice is often limited by factors you need to take into consideration.
The first priority for you must be to select a piston kit that is compatible with a chrome bore, so therefore the rings need to be suitable. Also consider whether pistons are graded sizes for the RT kit.
Pistons suitable for piston porting narrows things further.
Compression height & crown profile also need to be taken into consideration along with gudgeon pin diameter.
There’s no doubt that you might be able to select an excellent kit intended for a motorbike/snowmobile/jetski @ a really good price that will serve well, but it all depends on how much compromise you are prepared to make
i have swapped a favour for a used rt 225 kit . the kit is shagged , piston ring peg let go and ring dropped into the exhaust port. just the lining is damaged and not the cylinder by the looks of it ,anyway was thinking a wossner or wiseco piston and may be get one cheaper than the mb ones. will have to send cylinder off for replate so can go nicasil or chrome or steel liner and no problem then with size or grading as lancourts or who ever will hone to suit piston size if piston is supplied with shagged cylinder .
just wondered if anyone had used something different. cheers simon
a-teamlambretta wrote:a-teamlambretta wrote:Warkton Tornado No.1 wrote:Not quite “How long is a piece of string” type question, but piston choice is often limited by factors you need to take into consideration.
The first priority for you must be to select a piston kit that is compatible with a chrome bore, so therefore the rings need to be suitable. Also consider whether pistons are graded sizes for the RT kit.
Pistons suitable for piston porting narrows things further.
Compression height & crown profile also need to be taken into consideration along with gudgeon pin diameter.
There’s no doubt that you might be able to select an excellent kit intended for a motorbike/snowmobile/jetski @ a really good price that will serve well, but it all depends on how much compromise you are prepared to make
i have swapped a favour for a used rt 225 kit . the kit is shagged , piston ring peg let go and ring dropped into the exhaust port. just the lining is damaged and not the cylinder by the looks of it ,anyway was thinking a wossner or wiseco piston and may be get one cheaper than the mb ones. will have to send cylinder off for replate so can go nicasil or chrome or steel liner and no problem then with size or grading as lancourts or who ever will hone to suit piston size if piston is supplied with shagged cylinder .
just wondered if anyone had used something different. cheers simon
just to add , i will be using a 60/110 crank. cheers simon
a-teamlambretta wrote:Do you need a receipt to exchange and yesterday was ring peg failure that caused the damage, piston is still intact with rings no doubt that this was the demise of the kit.
Scooterdude wrote:a-teamlambretta wrote:Do you need a receipt to exchange and yesterday was ring peg failure that caused the damage, piston is still intact with rings no doubt that this was the demise of the kit.
There is a FB page dedicated to this issue, it seems that MB and Scooter centre are replacing failed kits as well as exchanging undamaged kits/pistons.
dscscotty wrote:If converting to jap suzuki/Kawasaki pistons you would also need to re-profile head, also I agree suzuki pistons are very good quality, although they do occasionally chuck ring pegs in high mileage motors,
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