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Old Oct 9, 2019 | 08:07 PM
  #11  
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I'm gonna toss a name out there and see what sticks:

Revolution Performance

Not specifically because I think they're quality (I have no experience in that regard), but only because I'm wondering how their quality has been lately. I know back about 10 years ago there was a HUGE scare over their product from one of their vendors using the wrong rings for nikasil, but I haven't heard any doom and gloom from them in a while.

Anyone care to chime in on it?
 
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Old Oct 9, 2019 | 09:10 PM
  #12  
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Originally Posted by Agoober
Suburban does two different 120 Mahle piston for the 107, here https://suburbanharley.com/Parts-Catalog-M8-Pistons


Peace.

Wow! Thank you! Those look like exactly like what I'm looking for. A set of those at 11.0 to 1.0 mated to a pair of S&S cylinders may be just the ticket.
 
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Old Oct 9, 2019 | 10:09 PM
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Originally Posted by AbitNutz
Wow! Thank you! Those look like exactly like what I'm looking for. A set of those at 11.0 to 1.0 mated to a pair of S&S cylinders may be just the ticket.
Yes I'm probably getting a set at 120 on a set of 114 barrels, I don't think you can push the 114's out to 124 or if you do there's a sealing issue not sure 120 or 124 all the same to me either way.Probably keeping a stock cam too as I like the power curve the way it is.

Peace.
 
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Old Oct 9, 2019 | 10:10 PM
  #14  
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Originally Posted by Mattbastard
I'm gonna toss a name out there and see what sticks:

Revolution Performance

Not specifically because I think they're quality (I have no experience in that regard), but only because I'm wondering how their quality has been lately. I know back about 10 years ago there was a HUGE scare over their product from one of their vendors using the wrong rings for nikasil, but I haven't heard any doom and gloom from them in a while.

Anyone care to chime in on it?
Someone here us using them and is very happy with them just can't remember who.

Peace.
 
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Old Oct 10, 2019 | 03:16 AM
  #15  
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Originally Posted by AbitNutz
Wow! Thank you! Those look like exactly like what I'm looking for. A set of those at 11.0 to 1.0 mated to a pair of S&S cylinders may be just the ticket.
Thought this was a interesting set:
 
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Old Oct 10, 2019 | 05:47 AM
  #16  
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Do these aftermarket cylinders compensate with more cooling fin area the increase in heat generated from a larger displacement? Can one cruise the larger than stock engines for miles on end at 90 and above on a hot day like that so common in the west.
 
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Old Oct 10, 2019 | 05:52 AM
  #17  
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Originally Posted by strych9
You might want to check out Fuel Moto's stuff, too. I have heard of no issues with their kits and I'm a happy customer. They use Carrillo pistons. The cylinders are top-quality.
What he said ^
 
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Old Oct 10, 2019 | 05:57 AM
  #18  
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I used this kit from FM. It comes with wiseco black edition pistons, The kit comes in at 10.75CR according to FM with stock cc heads. Rings come pre-gapped so pretty straight forward installation.

https://www.fuelmotousa.com/i-238981...2FFLT%20MODELS
 
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Old Oct 10, 2019 | 08:25 AM
  #19  
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Originally Posted by jake24lt
I used this kit from FM. It comes with wiseco black edition pistons, The kit comes in at 10.75CR according to FM with stock cc heads. Rings come pre-gapped so pretty straight forward installation.

https://www.fuelmotousa.com/i-238981...2FFLT%20MODELS
Interesting, I had not seen the lower CR kit in there. Did Jamie, or FM give you advise to go with the lower CR, or what were your reasons? Genuinely curious, thanks!
 
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Old Oct 10, 2019 | 10:04 AM
  #20  
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Originally Posted by Agoober
Yes I'm probably getting a set at 120 on a set of 114 barrels, I don't think you can push the 114's out to 124 or if you do there's a sealing issue not sure 120 or 124 all the same to me either way.Probably keeping a stock cam too as I like the power curve the way it is.

Peace.
If you are starting with a 114" motor with 4.5" stroke you can easily get 120 ci by boring to 4.125" bore. The stock 114" cylinders come with 4.016" bore. The SE 114" cylinders come with approximately 4.07 bore. I know you can take the SE cylinders out to 4.18" bore and that will give you 123.5 ci with the 4.5" stroke. Whether the stock 114" cylinders can be bored that far I'm not sure. If you increase the bore to 4.25" to get a 124" with 4.375 stroke or 128" with 4.5" stroke, there is an orifice in the heads that needs to be plugged, but it not a big deal to do. I don't think it is necessary to plug it with the 4.18" bore, but I could be mistaken.

Using the stock cam will give you cylinder pressures in the 240 psi range. Stock pressures on the 114" motor are around 225 psi. I don't know if that will present a problem or not.
 
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