SATO low mounts running very hot - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 15 (permalink) Old 05-31-2014, 10:58 PM Thread Starter
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SATO low mounts running very hot

Just got the RC this winter.

I have Sato low mount ovals with the Dan kyle low mounts 3 map on a pc3usb.

Total miles on the bike 4300

Right side is running very hot. The rubber at the strap on the right side is burnt on the bottom. pics to follow. I have only ridden 150 miles on it.

I noticed the Sato's are different diameters on each side....this is looking at the exhaust tip... right side is larger than the left.

I can go in and richen up the fuel map, but that is a shot in the dark right now without proper data acquisition or dyno

Picture is of the burnt strap rubber for interest sake.

How do I attach more than one pic? It just replaces the previous one when I upload another.

Any other members run into this before?

The bike is in Calgary elevation is 3500-4000ft

Thanks
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Last edited by Motopilot350; 05-31-2014 at 11:16 PM. Reason: Pictures
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post #2 of 15 (permalink) Old 06-01-2014, 11:06 AM Thread Starter
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Just did a compression check. 145 front and rear.
I am doing the flapper mod and pair mod, so not looking for the compression to solve my other issue.

Bike was "warmish" took awhile to strip it down after I warmed it up. Book says 176psi. What numbers are the rest of you getting?
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post #3 of 15 (permalink) Old 06-01-2014, 11:48 AM
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How does the packing look in the cans? Is there filament falling out? (Particles??)

Sounds like you have a lean condition too...may want to reload that map again, just to make sure.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #4 of 15 (permalink) Old 06-01-2014, 01:41 PM Thread Starter
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Yes, reloading the map today. Just finished the flapper an pair mod.
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post #5 of 15 (permalink) Old 06-01-2014, 02:28 PM
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I have just not long ago finished full service on these cans.

I had said it may be a lean condition as well... Pretty sure it is not the packing in cans as it is brand new... and all the other sets I have done have not reported any issues.

Keep us updated Moto.


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-2001 Honda 929RR Erion Edition
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post #6 of 15 (permalink) Old 06-01-2014, 04:07 PM
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I have just not long ago finished full service on these cans.

I had said it may be a lean condition as well... Pretty sure it is not the packing in cans as it is brand new... and all the other sets I have done have not reported any issues.

Keep us updated Moto.


DHC
Sorry Duckie, I didn't recall if these were reworked or not. I will say it again to you folks, buying a $500~$2,000 exhaust is only part of the equation!

You need to get a custom map done sooner than later.



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post #7 of 15 (permalink) Old 06-01-2014, 11:23 PM
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Quote:
Originally Posted by Motopilot350 View Post
Just did a compression check. 145 front and rear.
I am doing the flapper mod and pair mod, so not looking for the compression to solve my other issue.

Bike was "warmish" took awhile to strip it down after I warmed it up. Book says 176psi. What numbers are the rest of you getting?
From what I've read and experienced, you have to do a compression check the right way to get accurate readings. And that's assuming your gauge is nuts on.
Did you:
a) have a warmed up motor
b) have both spark plugs removed
c) have the throttle rolled wide open
d) have the kill switch set to off/kill

That last one is to keep the electrical system safe, I read recently that's a safeguard to keep the system from trying to find a ground. I can't verify the validity, but I've done it and it does work.

fwiw, that's the first time I've seen the rubber insulator on the strap melt like that. My first guess is the packing, might be worth a look see...

John, 2000 RC51 #000100


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post #8 of 15 (permalink) Old 06-02-2014, 12:48 AM Thread Starter
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Thanks for the input everyone. Yes compression test was performed as per the manual, with the exception of the temp being only warm to the touch. It was the first time I had removed all the bits to get to the cylinders, so it took a little longer. I can't vouch for my compression gauge. I will do another check when I get home.

Had to drop everything and go to work. I will get back on it in a few days.

I don't think it is the can/cans, DH's work is meticulous.

I am reloading the map and then booking a dyno run. I am curious to see what it comes out at and to get the mixture info.

Thanks again for all the help
Cheers

Last edited by Motopilot350; 06-02-2014 at 12:51 AM. Reason: Spelling
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post #9 of 15 (permalink) Old 06-02-2014, 01:35 AM
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Thanks for your faith in my work Moto.

JD9 thanks for your lack of faith in my work :what:

I am pretty certain and agree with Madbuyer that a lean condition is present.

Although if it is a can issue... I stand behind my work and would sort it out quickly and free of charge.

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post #10 of 15 (permalink) Old 06-02-2014, 08:06 AM Thread Starter
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Never doubted your work DH. I hope it did not appear that way, just an odd problem that I was hoping someone in our midst had dealt with before.

I will report back once I get a chance to look at it further.

Cheers
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