[powderillusions]

trying to figure out exactly what I have its supposed to be an esr 330 and the piston is a 77mm esr (ive got the box) I called ESR and they said by the sound of it its one of their older ones that should have another bore job left in it if I need, they also said to look under the intake for the numbers to identify what porting it has - so I found all that info and called esr back with the numbers i found and by what they told me those numbers dont match anything they would put on SO here is what I have under the intake as far as I can read (through a mirror and flash light so i hope its correct)

3 lines first being 22 under that is 11-07 and third line is # 6065 again I could have the numbers backward since I was looking through a mirror but does that look familiar to anyone?

 

[acecarlos]

#6065 is the cylinder number, this one is a ProX casting, that is my belief based on the number sequence.

11-07 sounds like the date it was manufactured, this can be verified through ProX with the #6065 number...

I am puzzled on the 22, possibly it is 77....in this case it would mean it is setup for a plus 5 MM crank, 77 MM stroke. This is how these cylinders are typically marked.

Carlos

 

[powderillusions]

does SS sound better than 22--I went and looked again and in the mirror under the bike its 22 I just didnt flip it if you flip 22 in the mirror you see SS --

 

[acecarlos]

Not sure what SS would satnd for. I suggest you call ProX and see if they have any History on cylinder #6065....they should.

Carlos

 

[powderillusions]

New camera came and I got a look inside the engine, with the jug numbers being in question I wondered about the piston---numbers match the box -- so it is a big bore 77mm

 

[kb250r]

Sorry i know this is off topic,but where can i get that camera you using there..name brand ext,ext if you dont mind,man that looks handy....

 

[powderillusions]

I bought it off ebay shipped in from hong kong from bestbuystreets-- it hooks to your laptop (or what ever you have with a usb port) --I used to import a mini dvr for resale to the RC plane and rocket guys and its not so much the quality of the actual product its the consistency of the item and the software that are the issue <-mainly an issue if your reselling-<< the actual software that came with the cam, what little Ive used it, isn't that great (so far) so I used windows movie on the above (uses the webcam tab on movie) the actual cam software has more fine tuning adjustments for the image and few other things like a snap shot button but you can pull snap shots off your video from movie if you need-- its not HD or anything but for under 20$ shipped im good with it lol

 

[acecarlos]

Looks like a 77.00 MM piston, Wiseco.....this would be the second to the last bore, last bore being 77.50 MM

Carlos