Cylinder Boring?
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Cylinder Boring?
Hi all,
How about some of you guys with big bore experience answer me a question if you don't mind. When I got my 07 SG I went ahead with the 103" kit. My question is can the 103" cyclinders be bored out to 107"? Just curious. Not something I am going to do really soon, pipes and tuner are next, but maybe in the future. My kit has the SE-255 cams and stock heads. Thanks in advanced!
Dante
P.S. Just threw in the pic of my '98 FLHPI, sold it before I got the SG. I am in line at Talledega Superspeedway, waiting to take my two laps around the track! It was the March of Dimes Ride. YES!!!!! The laps were a blast!!!!!
How about some of you guys with big bore experience answer me a question if you don't mind. When I got my 07 SG I went ahead with the 103" kit. My question is can the 103" cyclinders be bored out to 107"? Just curious. Not something I am going to do really soon, pipes and tuner are next, but maybe in the future. My kit has the SE-255 cams and stock heads. Thanks in advanced!
Dante
P.S. Just threw in the pic of my '98 FLHPI, sold it before I got the SG. I am in line at Talledega Superspeedway, waiting to take my two laps around the track! It was the March of Dimes Ride. YES!!!!! The laps were a blast!!!!!
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Joined: Feb 2006
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From: TX
RE: Cylinder Boring?
No, they can not. The ones that Millenium makes and sells are a bit different than the HD cylinders. The liners are different material. You could easily make it a 107 with a set of their jugs & pistons though.
Laps at the track a awesome. We've done it @ TMS!
Laps at the track a awesome. We've done it @ TMS!
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RE: Cylinder Boring?
Ok, I had thought I saw people say that the stock 88 cylinders could be bored to 95 was hoping the 2007 103" could be bored to 107". Material problem eh? I was thinking it might not be thick enough, material never occured to me. Thanks!
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Joined: Dec 2003
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RE: Cylinder Boring?
ORIGINAL: Dante
Ok, I had thought I saw people say that the stock 88 cylinders could be bored to 95 was hoping the 2007 103" could be bored to 107". Material problem eh? I was thinking it might not be thick enough, material never occured to me. Thanks!
Ok, I had thought I saw people say that the stock 88 cylinders could be bored to 95 was hoping the 2007 103" could be bored to 107". Material problem eh? I was thinking it might not be thick enough, material never occured to me. Thanks!
Road Master
Joined: Feb 2006
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From: South-Central Minnesota
RE: Cylinder Boring?
The 103" motor already has 95" bores in their cylinders. Its the added stroke to the flywheels that bumps the 95 up to 103" displacement.
To go with a bigger bore and get 107" you need a 98" Revolution performance top end. The reason they can be bored out larger is they do not have a cast iron liner as the stock cylinders do. They compensate for that...and actually improve upon the cast liner, by coating the aluminum jugs with Nikasil [which I think stands for nickle silicon carbide] finish...which reduces friction and provides a better seal. Another benefit is they run cooler without the cast iron trapping heat in the cylinder, and the all aluminum cylinder expands and contracts in a more linear rate with the forged alloy pistons used in these kits.
To go with a bigger bore and get 107" you need a 98" Revolution performance top end. The reason they can be bored out larger is they do not have a cast iron liner as the stock cylinders do. They compensate for that...and actually improve upon the cast liner, by coating the aluminum jugs with Nikasil [which I think stands for nickle silicon carbide] finish...which reduces friction and provides a better seal. Another benefit is they run cooler without the cast iron trapping heat in the cylinder, and the all aluminum cylinder expands and contracts in a more linear rate with the forged alloy pistons used in these kits.
Road Master
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From: South-Central Minnesota
RE: Cylinder Boring?
ORIGINAL: swomack
If you bore out a coated cylinder don't you get an uncoated cylinder?
If you bore out a coated cylinder don't you get an uncoated cylinder?
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