dirtmunkee Posted July 25, 2015 Report Share Posted July 25, 2015 Lost piston, pitted dome, couple good grooves in cylinder. Previuos owner appaently had 1st bore done to 64.25. Waiting to hear from shop on them but will surely be maxed to 66mm and hopefully clean up. Has older fireball head with completely flat top not contoured like newer ones on their site. And dont see where they just sell domes alone. May just call them monday. Cant find confirmation that other brands will fit it. Will they? And i assume they can be bought for 66mm bore. Previous owner pretty much kept every bit of paper work and ive been pouring over the net researching. Wanna make sure everything is right. So quick run down from recall and looking at them he had some port work done. believe it was more of a race port than a trail but runs the woods pretty good to me. Has t5 pipes and from papers appears to be boyesen dual stage reeds with stock carbs jetted for the set up and hinson clutch. Hot rods crank i believe is stock. Need to set on blocks to check stroke. Rods appear to measure stock with caliper eyeballed to the centers of rod bearings. But some people saying they only make a long rod 4mm stroke some say both. Its welded and some say they only weld the 4mm. From papers looks like he bought it through vitos and they welded it there. Any input greatly appreciated. Want this thing to be done up right. Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 25, 2015 Author Report Share Posted July 25, 2015 Also meant to say is there anything else that i should be thinking of/concerned about. Thanks for any help. Quote Link to comment Share on other sites More sharing options...
camp0429 Posted July 25, 2015 Report Share Posted July 25, 2015 What does lost piston mean? Hole in center or?? If your "shop" says they have to bore from 64.25 to 66.00, either shit is totally fugged or you need to find a new shop Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 25, 2015 Author Report Share Posted July 25, 2015 Been a while since it happened. Finally tired of it just sitting. Have moved and all kinds of $hit. Dont know where the busted piston ended up. But it busted part of the skirt off. Believe they were power pistons. One score in cylinder is in the spot where the wrist pin is and didnt look fresh. Looks like a previous rebuild maybe lost a pin clip and let the pin work over and slowly eat at wall. Is deepest just above a port and then gets shallower on up. And just looking at it looks like a good mm atleast or more to the deepest part. The other score is not near pin and is minor. As far as the shop have looked into a bit and they are a good local shop that specializes in racing/performance thats been around quite a few years. Same place previous owner had things done at years ago. Have the receipts:). But like i said waiting to hear in a few days how far out they will have to go to clean up. Just trying to get some input. Want things as perfect as possible. Thanks for any time on feedback. Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 25, 2015 Author Report Share Posted July 25, 2015 Btw camp just saw that your interests are the same as mine. Good choices! Quote Link to comment Share on other sites More sharing options...
tfaith08 Posted July 25, 2015 Report Share Posted July 25, 2015 In the case of a screwed engine and a shady shop to deal with, it would be best to drop the $200 in shipping to and from a site sponsor. Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 26, 2015 Author Report Share Posted July 26, 2015 http://bore-tech.com/Carbide%20Bore%20Process this is the shop and their process. Been around since 89 and did around 478,000 in annual sales. So im guessing their doing something right. And im guessing that is figuring 100.00 per cylinder plus shipping cost for site sponsor. But still just waiting for them to check them out and see what im looking at. Wife keeps asking "how much you gonna spend on it", "as little as possible dear" which means "as much as necessary" . Anyone with some knowledge on domes. Would like to just buy domes and not dump more on whole new head. Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted July 26, 2015 Report Share Posted July 26, 2015 http://bore-tech.com/Carbide%20Bore%20Process this is the shop and their process. Been around since 89 and did around 478,000 in annual sales. So im guessing their doing something right. And im guessing that is figuring 100.00 per cylinder plus shipping cost for site sponsor. But still just waiting for them to check them out and see what im looking at. Wife keeps asking "how much you gonna spend on it", "as little as possible dear" which means "as much as necessary" . Anyone with some knowledge on domes. Would like to just buy domes and not dump more on whole new head.Noticed your from Cincinnati. Zillafreak is from your area, and may know a better shop to deal with......just a thought. sent from yo mammy house Quote Link to comment Share on other sites More sharing options...
tfaith08 Posted July 26, 2015 Report Share Posted July 26, 2015 The shop will need the pistons before boring so that the cylinders are bored to spec. If they say that they don't need them, go somewhere else. Also, why are you going to 66mm? If it is for performance purposes, don't. If the cylinders actually need that much taken out of them, then go ahead. I don't know anything about fireball heads. If it used PD domes, I'd stick with it. On an otherwise stock engine, the domes will be dictated by fuel choice and evelation. What is the elveation where you currently ride and what fuel are you going to use? Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 26, 2015 Author Report Share Posted July 26, 2015 Thanks will look into him. But been reading more and more and alot of folks seem to back his work at boretech over the years. Quoted in door looking at 75.00 a cylinder. But im not set on it waiting to hear what he has to say and more research. As previously stated want shit right. Thanks all. Appreciate any views/opinions. Quote Link to comment Share on other sites More sharing options...
bigweav81 Posted July 26, 2015 Report Share Posted July 26, 2015 $75 is average bore, and hone. sent from yo mammy house Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 26, 2015 Author Report Share Posted July 26, 2015 The shop will need the pistons before boring so that the cylinders are bored to spec. If they say that they don't need them, go somewhere else. Also, why are you going to 66mm? If it is for performance purposes, don't. If the cylinders actually need that much taken out of them, then go ahead. I don't know anything about fireball heads. If it used PD domes, I'd stick with it. On an otherwise stock engine, the domes will be dictated by fuel choice and evelation. What is the elveation where you currently ride and what fuel are you going to use? I know they will need the pistons. Quoted me on a set but still researching/shopping around, waiting to hear. Still need to check elevation set up etc. Bought and was set up by previous owner for somewhat local areas to me (cincinnati). Preowner said only run 50% 93 octane and 50% turbo blue if memory is right is 108 if that tells anything. But from visual scored pretty deep have a feeling wont be far from max to clean up. As far as domes i assume dimensions are the same across manufacturers. Want my ducks in a row before moneys spent and things start going back together. Quote Link to comment Share on other sites More sharing options...
camp0429 Posted July 26, 2015 Report Share Posted July 26, 2015 If you have to go to 66 to clean them cylinders, their pretty much wasted. Might get some life out of them, but might also look into the new driveline cylinders... Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 26, 2015 Report Share Posted July 26, 2015 Or send your stock cylinders to us at Driveline performance. Our bore charge is $55 per hole. We can fix your problem one way or another, if only one side is really grooved up we can probably come up with a cylinder to replace it and bore that new cylinder and your other cylinder to the next smallest bore allowable Quote Link to comment Share on other sites More sharing options...
dirtmunkee Posted July 26, 2015 Author Report Share Posted July 26, 2015 Thanks will keep that in mind. Should have word on how far they need to go by tues/weds. But one thing with port work done would have to have replacement done to match. From my understanding there is grinding done inside the actual port and not just to the opening on the sleeve. So wouldnt a resleeve be the best option. Quote Link to comment Share on other sites More sharing options...
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