machinist
#21
The increase from 80" to 83" is a marketing ploy. The Evo is 1340cc is approx. 81.7" so you won't gain any appreciable "size" with that type conversion. You would only be going from a 1340 to a 1360. The 10:1 pistons would add some level of performance, but I don't think you can buy a better quality cylinder than OEM. They have a high nickel content in the liner which is one of the major ingredients of their longivety.
If it's the torque plate issue on your mind, yes, when oversizing you must use them, but assuming the bore is good, to simply scuff hone (break the glaze) to allow new rings to seat, they're unnecessary. I've used straight blade flex hones and ball-type flex hones on countless jugs with absoutely no problem whatsoever.
If it's the torque plate issue on your mind, yes, when oversizing you must use them, but assuming the bore is good, to simply scuff hone (break the glaze) to allow new rings to seat, they're unnecessary. I've used straight blade flex hones and ball-type flex hones on countless jugs with absoutely no problem whatsoever.
#22
The increase from 80" to 83" is a marketing ploy. The Evo is 1340cc is approx. 81.7" so you won't gain any appreciable "size" with that type conversion. You would only be going from a 1340 to a 1360. The 10:1 pistons would add some level of performance, but I don't think you can buy a better quality cylinder than OEM. They have a high nickel content in the liner which is one of the major ingredients of their longivety.
If it's the torque plate issue on your mind, yes, when oversizing you must use them, but assuming the bore is good, to simply scuff hone (break the glaze) to allow new rings to seat, they're unnecessary. I've used straight blade flex hones and ball-type flex hones on countless jugs with absoutely no problem whatsoever.
If it's the torque plate issue on your mind, yes, when oversizing you must use them, but assuming the bore is good, to simply scuff hone (break the glaze) to allow new rings to seat, they're unnecessary. I've used straight blade flex hones and ball-type flex hones on countless jugs with absoutely no problem whatsoever.
#24
Ok so back to the added compression , what effects does it have on 89 evo cases and which is recommended if I need to go oversize on my cylinders or if cost warrants going with a cylinder/piston bore kit? And what is the proper combination needed with a stock head if I keep the heads I have as far as which compression piston. Also is the stock ignition ok?
#25
Ok so back to the added compression , what effects does it have on 89 evo cases and which is recommended if I need to go oversize on my cylinders or if cost warrants going with a cylinder/piston bore kit? And what is the proper combination needed with a stock head if I keep the heads I have as far as which compression piston. Also is the stock ignition ok?
#26
Thanks Chad some very good points.I went up to our local kawasaki dealer yesterday, the main guy there is a long time harley wrencher, long time acquaintance, although he wasn't there I talked to his wife , seems hes slow this time of year so looks like I;ll get him to give the bottom end a once over and either him or I will mic the jugs ( I'll do it if I can understand the procedure, from my rebuilding evo motor dvd I recently acquired they show to only mic the top of jug area compare it to piston, but I think there's more to it than that. I can then see what scott can make available.
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