When to do a big bore?
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Road Warrior
Joined: Aug 2009
Posts: 1,926
Likes: 185
From: Utah
Can you post some details? Who did it and what parts did you choose?
Road Captain
Joined: Jul 2012
Posts: 687
Likes: 1
From: Texas
Parts - CP Pistons, Genesis 577 Cam, S&S Premium Tappet Set, Cometic Gaskets, Barnet Scorpion Clutch, etc., etc.
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Road Warrior
Joined: Aug 2009
Posts: 1,926
Likes: 185
From: Utah
Thanks.
If you've got a 103, it's not worth the money to go 107 (worth maybe 3 or 4 hp, assuming similar compression, heads, etc). Put the money in heads, cams, get the compression right, throttlebody, exhaust, etc. You can build a nice touring engine around the 103 without having to change pistons. If you're at 96, then it makes sense to build a 107 instead of a 103.
Road Warrior
Joined: Feb 2010
Posts: 1,534
Likes: 10
If you've got a 103, it's not worth the money to go 107 (worth maybe 3 or 4 hp, assuming similar compression, heads, etc). Put the money in heads, cams, get the compression right, throttlebody, exhaust, etc. You can build a nice touring engine around the 103 without having to change pistons. If you're at 96, then it makes sense to build a 107 instead of a 103.
Above all, I want my bike to have good street manners (no pinging, excessive heat, etc.).
Thanks
Ultimate HDF Member
Joined: Dec 2010
Posts: 7,776
Likes: 2,252
From: wet coast BC
I just got back from a long road trip with some friends. Three guys were on Gold Wings and the other on Victory. Granted, I was the only one riding two up, but they just walked, no ran, away from me on the hills. Me no like.
I'm thinking of a doing a 107" kit. I've got 48K on my Road King Classic.
Whadya think?
I'm thinking of a doing a 107" kit. I've got 48K on my Road King Classic.
Whadya think?
But;
what engine do you have now?
what have you done to improve the stock configuration to date?
Has it been tuned to maximum?
always wondering if the current engine is putting out all it can before the need for improving.
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Road Warrior
Joined: Aug 2009
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Likes: 185
From: Utah
I have a stock 96 with basic a Stage I (Monster Oval slip ons and a high flow air cleaner and PCV from Fuel Moto (mapped by them)).
Ultimate HDF Member
Joined: Dec 2010
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From: wet coast BC
In fact the pipes may have detuned, a canned map may or may not be optimal.
No doubt that a 107 kit properly tuned will give you a very noticeable improvement.