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[grc]

A lot of dealers have no access locally for bore and honing properly done therefore sell ball hone solutions. Not acceptable. Plus when you put a stock cylinder in plates and measure there may be no wear but there will be distortion.  They won't be round and straight and based on my experience to get them to clean you now have a sloppy piston fit.

EXACTLY!  One of the reasons some people have had issues over the years with the various big bore kits Harley sold and still sells is that most dealerships didn't have the equipment to accurately measure, bore, hone, and whatever else might be required, and they just took Harley at it's word that the parts were accurate and they could just install them right out of the box.  I called BS on that more than a decade ago, and still call BS on it.  The reality is that while some never had a problem, others had oil consumption and premature wear issues.  It was determined by the luck of the draw.  If I'm spending my money on something like this, I don't want to depend on Lady Luck for a good outcome.

Jerry

[Ridgerunr]

I had a so called pro in Iowa bore cylinders, supplied "custom pistons", and I would have done better at the local lawnmower shop. On the other hand, 2 sets of SE cylinders/pistons ordered from the catalog, 1 3.875" and 1 4.060" ran great, no noise, no oil consumption.  My experience with hot rodding Pans, Shovels, Evo's , and now TC's is like rolling dice, some times it's snake eye's, other times a winner. One thing for sure is "stock" is waaay less fun.

[rockytop117]

I had a so called pro in Iowa bore cylinders, supplied "custom pistons", and I would have done better at the local lawnmower shop. On the other hand, 2 sets of SE cylinders/pistons ordered from the catalog, 1 3.875" and 1 4.060" ran great, no noise, no oil consumption.  My experience with hot rodding Pans, Shovels, Evo's , and now TC's is like rolling dice, some times it's snake eye's, other times a winner. One thing for sure is "stock" is waaay less fun.

I've been in that same boat with a "mtn motor" ... clearance varied depending upon who you spoke with!
 

[ultraswede]

My old bike bored to 107 was an oil drinker, supplied by a known-name shop on these forums.

My take is that HD has WAY better quality control than the Indy community.

[Ridgerunr]

I've been in that same boat with a "mtn motor" ... clearance varied depending upon who you spoke with!

Mine were hyper fubar'd, custom pistons my arse. The only thing custom was the price.

"My old bike bored to 107 was an oil drinker"
I hear you Swede, all the Evo, and TC factory cast pistons I've had provided excellent sealing.

[prodrag1320]

Any indy with the proper boring & honing equipment will easily out do HD "drop in"parts.we have no problems here,street or race stuff

[ultraswede]

I don't question the piston fit or the cylinder dimensions from my supplier, but what happened to those dimensions after some miles is a different thing. (distorted cylinder?)
It might have been the valve guide seals as well, sold the bike before I had the chance to tear it down and look.

In any case, my problem was not due to "sloppy" tolerances from HD.........

[Ridgerunr]

Any indy with the proper boring & honing equipment will easily out do HD "drop in"parts.we have no problems here,street or race stuff

I agree, finding a good one such as yourself is critical.

[DCFIREMANN]

EXACTLY!  One of the reasons some people have had issues over the years with the various big bore kits Harley sold and still sells is that most dealerships didn't have the equipment to accurately measure, bore, hone, and whatever else might be required, and they just took Harley at it's word that the parts were accurate and they could just install them right out of the box.  I called BS on that more than a decade ago, and still call BS on it.  The reality is that while some never had a problem, others had oil consumption and premature wear issues.  It was determined by the luck of the draw.  If I'm spending my money on something like this, I don't want to depend on Lady Luck for a good outcome.

Jerry

X2.

Be Safe

THE DAWG

[Elias1974]

  I've just put on my 2014 CVO Breakout the Stage III Kit (10.5:1 Pistons with 259e cams).
Really like this kit, even though i've some questions unsolved.

There is no precise map for my bike with stage 3 combination. the best is map A617SGM205.

This map runs very well, i think, but i don't know if i have to change advance timing for high compression pistons.

MOCO, as ever, didn't support at all.

[rigidthumper]

I've just put on my 2014 CVO Breakout the Stage III Kit (10.5:1 Pistons with 259e cams).
Really like this kit, even though i've some questions unsolved.

There is no precise map for my bike with stage 3 combination. the best is map A617SGM205.

This map runs very well, i think, but i don't know if i have to change advance timing for high compression pistons.

MOCO, as ever, didn't support at all.

I would prolly start with 617SHD202 and look at the data.

[Hilly13]

I would prolly start with 617SHD202 and look at the data.

I would take your advice and it's nice to see you on here, hope you stick around 👍

[Fullsac Performance]

If your buying pistons why not go 113"? .060 over in the stock barrel. The cost of the parts is the same.
Extra 150.00 for machine work. 3 extra cubes, more compression, straight bore. More than few site vendors who can competently provide this. What's not to like? This was the hottest thing going before the 117 kit came out.

SG

[ultraswede]

[quoteWhat's not to like?][/quote]

The thin cylinder liner, in stock alloy.

The bang for the buck with the 117 HD kit can not be beaten, simple as that.
$2400 retail at 10.6 comp.

[Fullsac Performance]

[quoteWhat's not to like?]

The thin cylinder liner, in stock alloy.

The bang for the buck with the 117 HD kit can not be beaten, simple as that.
$2400 retail at 10.6 comp.

How thick do you think a drop in 117 is?? Lol