DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 1 Quote Link to comment Share on other sites More sharing options...
gusto Posted January 25, 2020 Report Share Posted January 25, 2020 Did you lose a ring and that’s what caused the damage? The pics of your pistons suck. you have lots of bores left. Great time to add some serious power Quote Link to comment Share on other sites More sharing options...
DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 Agreed my pics do suck. Only letting me send them on small format. All rings on pistons. Looks like those pistons are 1mm over from manufacturer part number. I not opposed to adding some power. On a budget though 1 Quote Link to comment Share on other sites More sharing options...
trumanbuckley1 Posted January 25, 2020 Report Share Posted January 25, 2020 Agreed my pics do suck. Only letting me send them on small format. All rings on pistons. Looks like those pistons are 1mm over from manufacturer part number. I not opposed to adding some power. On a budget though What’s your budget? That’s the ultimate questionSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 Few hundred .. just had a new house built . Spending tons of money else where. If I can find somebody to bore cylinders. And maybe go another size bigger piston . Would be good Quote Link to comment Share on other sites More sharing options...
trumanbuckley1 Posted January 25, 2020 Report Share Posted January 25, 2020 Few hundred .. just had a new house built . Spending tons of money else where. If I can find somebody to bore cylinders. And maybe go another size bigger piston . Would be goodGetting a good idea of how much you have to spend is good start. Once you start buying one thing it will snowball into much more very quickly. Contrary to what a ton of people on here will tell you, it is perfectly fine to rebuild and not upgrade any. Cheapest way to do it would be gasket, as little of a bore as possible, new pistons/rings/wrist pin bearings, clean up the head, send it.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Deets Posted January 25, 2020 Report Share Posted January 25, 2020 Who do you guys send your cylinders too to get bored? U.S. Chrome? Millennium? or other Quote Link to comment Share on other sites More sharing options...
gusto Posted January 25, 2020 Report Share Posted January 25, 2020 If your on a budget go to your local machine shop. Fee hundred will just be bore and pistons. You’ll need head work and gaskets. save Quote Link to comment Share on other sites More sharing options...
DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 I’m have a guy that owes me a favor to bore them out . So what do you guys think . I’m gonna be running stock carbs . I would like to go the route of bigger pistons . W out causing problems though. I think I’ll will get a new head too. Al lot of material seems gone on my stock head. I can’t see that it will evenly combust w other cylinder. Tell me if I’m wrong on that? So how big should I go? What else would have to be done? Sorry for all these questions. This started out w jetting Quote Link to comment Share on other sites More sharing options...
trumanbuckley1 Posted January 25, 2020 Report Share Posted January 25, 2020 I’m have a guy that owes me a favor to bore them out . So what do you guys think . I’m gonna be running stock carbs . I would like to go the route of bigger pistons . W out causing problems though. I think I’ll will get a new head too. Al lot of material seems gone on my stock head. I can’t see that it will evenly combust w other cylinder. Tell me if I’m wrong on that? So how big should I go? What else would have to be done? Sorry for all these questions. This started out w jettingYou want to bore it the least amount as possible. Gaining 20cc’s isn’t going to be as much power gain as porting or doing a cool head. Then you have more life in your cylinders and can bore again later onSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
kawa110 Posted January 25, 2020 Report Share Posted January 25, 2020 I’m have a guy that owes me a favor to bore them out . So what do you guys think . I’m gonna be running stock carbs . I would like to go the route of bigger pistons . W out causing problems though. I think I’ll will get a new head too. Al lot of material seems gone on my stock head. I can’t see that it will evenly combust w other cylinder. Tell me if I’m wrong on that? So how big should I go? What else would have to be done? Sorry for all these questions. This started out w jettingFuck that head, buy a cool head. Don’t overbore, only bore it to the next size required. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 I think I’m gonna go w the cool head then , and next size up piston . Others have commented before about jetting . Should I try a 27.5 pilot and 280 main to get me going. And thanks to all of you for your help . Much gratitude Quote Link to comment Share on other sites More sharing options...
trumanbuckley1 Posted January 25, 2020 Report Share Posted January 25, 2020 I think I’m gonna go w the cool head then , and next size up piston . Others have commented before about jetting . Should I try a 27.5 pilot and 280 main to get me going. And thanks to all of you for your help . Much gratitude If you go with a cool head you’re going to have to get certain sized domes to have the compression ratio you want. If you go higher than stock then you’re just going to have to play with the jetting. But that would be a good starting point.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
DoubleJay Posted January 25, 2020 Author Report Share Posted January 25, 2020 From what I can see my old pistons were 1 mm over. So do I do that again and go to 2mm over stock to 66 mm piston? Or bigger?? Quote Link to comment Share on other sites More sharing options...
trumanbuckley1 Posted January 25, 2020 Report Share Posted January 25, 2020 From what I can see my old pistons were 1 mm over. So do I do that again and go to 2mm over stock to 66 mm piston? Or bigger??You don’t know how much you need to machine off until you measure the cylinders with a bore gauge. If you can go with 1mil more then buy the pistons that are 1 mil more and take it to your machining friend. Then he will see what the tolerance needs to be and cut it to match the pistons. Don’t forget to make sure your ring gap is also correct when you go to install the pistons. Don’t want it seizing up when it gets hotSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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