Gotta Love The RC51 Enthusiast... - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 13 (permalink) Old 09-08-2011, 07:30 PM Thread Starter
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Gotta Love The RC51 Enthusiast...

http://www.hordpower.com/gallery/RC51-Tech/tech_001

I gotta get me some of these eye candies.....

Except for the broken cam....jondog can have it.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #2 of 13 (permalink) Old 09-08-2011, 08:16 PM
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Here's a couple of HRC works RC51 parts.

Titanium con-rod.


Billet aluminum cam drive
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post #3 of 13 (permalink) Old 09-08-2011, 08:25 PM Thread Starter
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Yeah but why tease me with unobtanium parts there Sub....you dream smasher



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #4 of 13 (permalink) Old 09-08-2011, 09:11 PM
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Yeah but why tease me with unobtanium parts there Sub....you dream smasher
Dreaming is free, buying is not.
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post #5 of 13 (permalink) Old 09-08-2011, 09:46 PM
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Well, I sure got no use for a busted cam, but those pictures were top notch mb! Number 7 and number 1 the best.
SubSailor, all I can say is Jeez!

John, 2000 RC51 #000100

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post #6 of 13 (permalink) Old 09-08-2011, 10:49 PM
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Well, I sure got no use for a busted cam...
That's what happens when you weld and grind stock cams with too much lift and spin the motor higher.
The cast cams can't handle it and break at that point, probably due to too much torsional flex.
The reason one went with billet cams for more power.
I have no idea why Honda chose cast cams for the RC51 (except cost).
All their other I-4 bikes use chrome-moly camshafts.
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post #7 of 13 (permalink) Old 09-09-2011, 05:30 PM Thread Starter
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Well, I sure got no use for a busted cam, but those pictures were top notch mb! Number 7 and number 1 the best.
SubSailor, all I can say is Jeez!
Did you see how beautifully they opened up the intake??? Thats a must do in my book.



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post #8 of 13 (permalink) Old 09-09-2011, 07:12 PM
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Did you see how beautifully they opened up the intake??? Thats a must do in my book.
Yeah the stock ports (intake and exhaust) are pretty rough.
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post #9 of 13 (permalink) Old 09-09-2011, 09:07 PM
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Ok, picture 10. I thought that's what you meant. Sorry, a little behind the curve here. So I get 2 intake valves per cylnder, and polishing or honing, and that's a very good picture of it. But what did he mean by, *look at the center divider and you can tell what need to be done*?

John, 2000 RC51 #000100

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post #10 of 13 (permalink) Old 09-10-2011, 12:31 AM
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Ok, picture 10. I thought that's what you meant. Sorry, a little behind the curve here. So I get 2 intake valves per cylnder, and polishing or honing, and that's a very good picture of it. But what did he mean by, *look at the center divider and you can tell what need to be done*?
Don't quite know myself, except it seems he shortened the overall height of the intake port divider and the amount is protrudes up the intake port.
Plus it seems he ground an inward curve as well.
I have no idea what the flow characteristics are to require that.

A comparison of Hord's modified intake port and stock intake port.
No doubt the stock intake port needed some clean up as it's pretty rough.



Last edited by SubSailor; 09-10-2011 at 12:34 AM.
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