DirtDiggler69 Posted February 21, 2012 Report Share Posted February 21, 2012 I had a airleak and it damaged my left piston , cracked it . Pulled the cylinders and found out that I need to have them bored to .100 over . No big deal they make kits for that size and it will last me several riding seasons . Here's my problem . The left cylinder , the inner bottom tapped hole for the intake boot ( although I have changed to a 2-1 intake ) is jacked up . I can get the socket cap screw to thread in but it threads in at the wrong angle , almost like the previous owner got it jammed in there and tightened it and screwed it up . Has anyone ever had to helicoil one of these holes? I'm considering doing it , you kinda get only one shot at it though . Any other repair options? I guess as a last resort I could just not put a screw in that one and just go heavy with the gasket sealer and make sure it cures 48 hours before running it . Quote Link to comment Share on other sites More sharing options...
Concrete Posted February 21, 2012 Report Share Posted February 21, 2012 I had a airleak and it damaged my left piston , cracked it . Pulled the cylinders and found out that I need to have them bored to .100 over . No big deal they make kits for that size and it will last me several riding seasons . Are you resleeving the cylinders? Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 21, 2012 Report Share Posted February 21, 2012 No offense but i see half ass all over this. Do it right the first time. Helicoils are junk. I would use a timesert. Similar to a helicoil but ten times better and stronger. You will need the m6x1.25 insert. Its a simple process but needs to be drilled straight. The 100 thou over is getting really thin. It is not a real popular choice. At the point you are at, I guess what does it really matter?? Quote Link to comment Share on other sites More sharing options...
DirtDiggler69 Posted February 21, 2012 Author Report Share Posted February 21, 2012 No not going to resleeve the cylinders until next time . As far as the repair goes I am 1st going to try and use a m6 tap and clean up the threads and see if that helps . I was able to get a screw to thread in at the proper angle and engage but it keeps wanting to wander back to the bad angle . So I'll just chase the threads 1st . I have heard of the timeserts but have no experience with them , I'll check it out . A Helicoil kit for that size is 42 bucks , it's gotta be done right . I'll see what I come up with . Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 21, 2012 Report Share Posted February 21, 2012 No not going to resleeve the cylinders until next time . As far as the repair goes I am 1st going to try and use a m6 tap and clean up the threads and see if that helps . I was able to get a screw to thread in at the proper angle and engage but it keeps wanting to wander back to the bad angle . So I'll just chase the threads 1st . I have heard of the timeserts but have no experience with them , I'll check it out . A Helicoil kit for that size is 42 bucks , it's gotta be done right . I'll see what I come up with . I think if you run a tap through, there is a good chance you will double cut the threads and just make it worse. Try a chase kit. Plus if its already threading in cock eyed, than you may not be able to rethread. A helicoil will work. Its not like you have to torque the shit out of the intake boot. But if a timesert is availble, I would use it. IMO if your looking at going .100 over, I would junk the cylinders and find another set. Quote Link to comment Share on other sites More sharing options...
DirtDiggler69 Posted February 21, 2012 Author Report Share Posted February 21, 2012 I'm in a time crunch , I want to go to dunefest this year and get in some riding . So my budget doesn't have the room for re-sleeving at this time . Well Maybe bur I doubt it . The time sert kit is 56 bux versus 42 for the helicoil kit , not a huge difference . Plus it comes with enough inserts to do all 8 if they ever need it . Quote Link to comment Share on other sites More sharing options...
DirtDiggler69 Posted February 21, 2012 Author Report Share Posted February 21, 2012 I see on eBay I can buy stock bore sleeves for my jugs . 160 bux for the set . I'll talk to my builder and see what he will add on to slide them bastids into place . Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted February 21, 2012 Report Share Posted February 21, 2012 New sleeves wont just slide into place, but Ill let you and your builder sort through that. As far as the strippeh hole goes I think you are on the right track with the repair, but one thing that comes to mind is there isnt alot of additional material to be drilling that hole much bigger without getting that outside edge real thin. If there is enough room by all mean fix it. If it looks sketchy you can clean the threads the best you can with a tap and then cement in a stug in that location. Its not ideal but will probably out live your cylds being that they are going to be 100 over at this point. Quote Link to comment Share on other sites More sharing options...
DirtDiggler69 Posted February 22, 2012 Author Report Share Posted February 22, 2012 N2 , yes I have been staring at that tiny edge that runs the inside of the intake and wondering if the insert has enough room . The really good news is that I found a set of stock bore cylinders for 200 bucks . My builder has them on the shelf . He said they are at 64.25 (.010 ) and he will bore them to 64.50mm ( .020 ) . Plus it will fall into my budget so things are looking up . Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 22, 2012 Report Share Posted February 22, 2012 N2 , yes I have been staring at that tiny edge that runs the inside of the intake and wondering if the insert has enough room . The really good news is that I found a set of stock bore cylinders for 200 bucks . My builder has them on the shelf . He said they are at 64.25 (.010 ) and he will bore them to 64.50mm ( .020 ) . Plus it will fall into my budget so things are looking up . Seems like a better plan. Price seems good for fresh bored .020 cyl's. Quote Link to comment Share on other sites More sharing options...
DirtDiggler69 Posted February 22, 2012 Author Report Share Posted February 22, 2012 If the threads were repaired , what would these cylinders be worth ? Being that they are currently at .080 over ? Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 22, 2012 Report Share Posted February 22, 2012 If the threads were repaired , what would these cylinders be worth ? Being that they are currently at .080 over ? Probably nothing if they need to be bored. Quote Link to comment Share on other sites More sharing options...
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