mother trucker Posted June 19, 2013 Report Posted June 19, 2013 what is the biggest bore i can run that has recreational port that is relaible play bike im wondering about the bores that are above 421cc i know u gotta work with it and have a bigger pump and radiator ....... Quote
trickedcarbine Posted June 19, 2013 Report Posted June 19, 2013 All depends on how much money you got. But don't bother with big bore sleeves in stock cylinders if that is the question you're asking. Quote
67banshee01 Posted June 23, 2013 Report Posted June 23, 2013 Is it worth boring then putting a steel sleeve in? Quote
trickedcarbine Posted June 23, 2013 Report Posted June 23, 2013 Is it worth boring then putting a steel sleeve in?That is how most older big vote kits were done. The machinist would press out the older sleeve, bore the cylinder appropriately for the big bore sleeve and press it in and maybe deck the top of the jugs to give a clean flush surface. Is it worth it? Not any more. There are so many after market set ups out there now that if you really want more displacement/power then what a stock cylinder can do for you it's less headache and more reliable to just get a new set up. Quote
67banshee01 Posted June 23, 2013 Report Posted June 23, 2013 Was thinking mire along the lines of cylinder wear Quote
trickedcarbine Posted June 25, 2013 Report Posted June 25, 2013 Not sure what you mean then. No point in boring it if you are re sleeving. Quote
sheerider11 Posted June 25, 2013 Report Posted June 25, 2013 Steel sleeve instead of aluminumWhat? There is already a steel sleeve in the cylinders. Quote
m671054 Posted June 25, 2013 Report Posted June 25, 2013 To get back on track i think the op was rrefering to after market cyl and the ability to trail ride them. your refrence to a 421 possibly refered to a 68 bore. the super serval is 72mm and should cool okay. you might be able to get a big block twister 78+ since these are sleeved and cnc ported i would asssume you could get a non race port. What about a superioi sleeve or trex cyl? how big are their bores and water jackets? Quote
67banshee01 Posted June 25, 2013 Report Posted June 25, 2013 I didnt know the stock cylinder already had a steel sleeve. I thought it as just the cast aluminum Quote
trickedcarbine Posted June 25, 2013 Report Posted June 25, 2013 No, they have a sleeve pressed in to them. There are guys taking the aluminum stuff and setting them up with iron sleeves though. Mostly to change porting though. Quote
Spanks906 Posted June 26, 2013 Report Posted June 26, 2013 I didnt know the stock cylinder already had a steel sleeve. I thought it as just the cast aluminum You have steel rings, they woukd have eaten the aluminium very very quickly. So yes they have steel in em already. Quote
trickedcarbine Posted June 26, 2013 Report Posted June 26, 2013 You have steel rings, they woukd have eaten the aluminium very very quickly. So yes they have steel in em already.Many of these small motors in dirtbikes and atv's are Un sleeved. Just aluminum with a Nickasil coating. Quote
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