03-21-2013, 09:13 PM #1
- Join Date
- Jul 2012
What is better, sleeved or plated cylinders?
I have a 99 ultra that had a piston break. I'm going with a Hotrods crank. My question is should I stay plated or sleeve the cylinders? Any recommendation where to send them to or where to do an exchange? I know plated cylinders dissipate heat better, but I have been told the life isn't as good.
03-21-2013, 10:13 PM #2
good quality plating last basicaly for life , as long as you replace the wearing member out before the ring becomes SHARP
personally I would plate or buy new OEM cylinder , yes they are dearer but you know you are getting the right product
sleeves wear out faster than a plated cylinder
03-21-2013, 10:29 PM #3
SBT sells sleeved cylinders. Average life is about 10 hours... In this engine, you MUST run plated cylinders!
03-22-2013, 08:11 AM #4
I picked up an ultra with the steel sleeves already done. I put about 45 hours on her already. But I do have a set of stockers and when she needs a top end I will be sending them out to be replated.
But I think its more important to figure out what broke that piston. Have you opened the carbs up to take a look?
Last edited by turboman412; 03-22-2013 at 11:40 AM.
03-22-2013, 10:51 PM #5
03-22-2013, 10:56 PM #6
Plating is the logical choice. As stated, the life span of a plated cylinder is indefinite barring a catastophic failure that damages it. Send the cylinders that need plating to Millennium Technologies. Here is a link to there website.
03-23-2013, 06:30 AM #7
Lol steve I don't think she will blow up my bets on loose compression... after 45 hours compressions still at 120 across all 3 cylinders. I'm going to see how long she will last... I have an extra engine from a parts ski I picked up.
03-23-2013, 07:02 AM #8
- Join Date
- May 2006
On a stock sized piston engine, best to use plated. Cooling and long life are the main reasons. That being said, I have a Group K 1350 big bore kit, with about 100 hrs on it. Other than loosing a piston when I first got the kit,( bad buckshot carb) its been very reliable for a sleeved engine.Compression is 145,147 ,145
Biggest thing is to be sure the cooling system never get restricted at the head fittings, that will kill a sleeved engine faster than a plated one. Groco filter is a must.
Long life is achieved through proper jetting, cooling, oil quality (not amsoil), and never swap out the stock air box for flame arresters.
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