nitrocircus Posted August 10, 2009 Report Share Posted August 10, 2009 anybody here ever run a 66.5 bore on stock sleaves? Quote Link to comment Share on other sites More sharing options...
nitrocircus Posted August 10, 2009 Author Report Share Posted August 10, 2009 i need to know if that is to big of a bore to run Quote Link to comment Share on other sites More sharing options...
nitrocircus Posted August 10, 2009 Author Report Share Posted August 10, 2009 will i have heat problems with that tho? Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted August 10, 2009 Report Share Posted August 10, 2009 Yes thats a 2.50mm over or .100 over. Thats 375cc Wiseco has them here, last one at the bottom. http://www.wiseco.com/ProductSearch.aspx Edit* That is cutting it real close IMO. The cyl walls are real thin with a .100 bore. Doable and run killer, yes. Ideal size to run, no. Giver a go. Or find some stock good shape low bore cyls on here for dirt cheep. Theres some all the time on here, think theres a pair or two right now for sale. Have a look. :beer: Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted August 10, 2009 Report Share Posted August 10, 2009 I ran a set .100 over for years with NO problems. But i did have it on alky and i used common sense. Quote Link to comment Share on other sites More sharing options...
nitrocircus Posted August 10, 2009 Author Report Share Posted August 10, 2009 I ran a set .100 over for years with NO problems. But i did have it on alky and i used common sense. does alky run cooler? mine will only be ran a few drags a year Quote Link to comment Share on other sites More sharing options...
blowit Posted August 10, 2009 Report Share Posted August 10, 2009 does alky run cooler? mine will only be ran a few drags a year If you have a ton into porting on your cylinders, you can go for broke by running the 66.50mm. Keep a close eye on things. (Open every 20 hrs). Problem with thin sleeves is any piston slap will break them and make change. They are also more subject to distortion when hot thus wearing out your pistons faster. If you are running stock or mild jugs, probably better to get different cylinders. Brandon Quote Link to comment Share on other sites More sharing options...
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