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post #1 of 26 (permalink) Old 07-23-2014, 10:56 AM Thread Starter
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Just Cams or a 107 Build

I am prepared to upgrade the stock cams in my bike with either Andrews 57H or Woods 222s. Now I am wondering if I would be better served to just do a 107 big bore kit.

The additional cost for the 107 seems relatively minimal but is it truly worth it?

Any advice/recommendations is greatly aprreciated and received.

Semper Fi,


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2012 FLTRX, 4" Rineharts, V&H Naked V02, FullSack Head Pipe, 14" Malo's, Topshop Minister Fender & Viper bags, 21in Hogpro Titan wheel, Progressive monotubes with 1in drop, Andrews 57H cams.
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post #2 of 26 (permalink) Old 07-23-2014, 11:59 AM
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Originally Posted by TYM2GLIDE View Post
The additional cost for the 107 seems relatively minimal
We love spending other people's money around here, so yes, go for the big bore kit!
But seriously, the 107 isn't just for the displacement boost; you also boost compression (which I think is the bigger advantage), which will give you even more gains from the cam upgrade. So if budget allows, I'd say it's definitely worth doing.
Then of course you get into whether or not to port the heads while they're off, which I could make a case for or against, depending on your performance goals and budget.
So while the cams you mentioned are designed around a stock engine and give a nice increase on their own, yes you will see more gains from the big bore for minimal cash outlay if you want to take that next step. Just remember it's a slippery slope in the neverending quest for more power...

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post #3 of 26 (permalink) Old 07-23-2014, 12:18 PM
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I've got a 103 with SE204 cams, runs really nice with 20,000mi on it. It drinks not one single drop of oil, shows good compression and does not blow oil out the breathers. I'd be hard pressed to bust open a well sealed motor good running set of pistons/cylinders and chance having an issue(it does happen), just to gain 4 cubic inches.

A good portion of the power gains come from the head work and thinner head gaskets(tighter squish/more compression) done while the 107 kits are installed, the gains from the 4 extra cubes are minimal in the overall picture.

Something to consider.......

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post #4 of 26 (permalink) Old 07-23-2014, 12:25 PM
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I went to 107 because I had a 96, if I had a 103, I doubt very seriously I would have gone to 107, I probably would've done cams, and maybe some head work.

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post #5 of 26 (permalink) Old 07-23-2014, 12:50 PM
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The 107ci will get you more torque.
I got 110hp and 120 torque in mine.

My 103 in the last bike with the same compression was 101hp and 107 torque

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post #6 of 26 (permalink) Old 07-23-2014, 01:23 PM
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Quote:
Originally Posted by TYM2GLIDE View Post
I am prepared to upgrade the stock cams in my bike with either Andrews 57H or Woods 222s. Now I am wondering if I would be better served to just do a 107 big bore kit.

The additional cost for the 107 seems relatively minimal but is it truly worth it?

Any advice/recommendations is greatly aprreciated and received.

Semper Fi,
I just went thru the same debate...my opinion is: do the cams and heads and get it tuned. I cant believe how much better my bike runs after it spent a couple hours in the dyno room.

And thank you for your service Marine!
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post #7 of 26 (permalink) Old 07-24-2014, 07:06 AM
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While we sell 107" kits, a man with a 103" would be better served to install a set of cams, and some cylinder head work.
With that said, and with the increase of valve sizes in the heads once completed, and usually re-surfaced to optimize compression for the given cam, valve to piston clearence needs to checked/established.
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post #8 of 26 (permalink) Old 07-24-2014, 07:49 AM
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youde be better off with cams,compression & headwork
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post #9 of 26 (permalink) Old 07-24-2014, 09:23 AM
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I went with the Andrews 57h cams for my '13 RGC - I am very impressed and happy I didn't do a 107. I spent that money elsewhere! LOL
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post #10 of 26 (permalink) Old 07-24-2014, 01:07 PM Thread Starter
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Thanks to all, after the advice, I think I am going to go with the 57H cams and get the heads ported. Hopefully if will be what I am looking for.


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2012 FLTRX, 4" Rineharts, V&H Naked V02, FullSack Head Pipe, 14" Malo's, Topshop Minister Fender & Viper bags, 21in Hogpro Titan wheel, Progressive monotubes with 1in drop, Andrews 57H cams.
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