Holes in Mufflers

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shoey949
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Holes in Mufflers

#1 Unread post by shoey949 »

Well I have discovered a couple of holes at the bottom of each of the two mufflers on the 350. The are each about 8mm in diameter, however they look like they belong there, not just like somebody took a screwdriver to them. Are the holes supposed to be there? Will this have an effect on carburation, and high rpm performance?

Thanks Once Again!!!
1973 Honda Cl 350 (Sold)
1982 Honda 650 Nighthawk
1978 Kawasaki KZ 400 (Sold)
1983 Kawasaki GPZ 550

But someone will say, "You have faith; I have deeds."
Show me your faith without deeds, and I will show you my faith by what I do.

James 2:18

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oldnslo
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#2 Unread post by oldnslo »

Mufflers sometimes come with drain holes, to get rid of condensation. Don't sweat it.
John
"83 XJ900RK

IT'S ABOUT OIL, MONEY, AND POWER, ALL OF THE TIME.

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96xj600
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#3 Unread post by 96xj600 »

ya no sweat, it for letting water drain out, well as far as i know. i have holes too, but its oil thats draining right now.
... i just want to ride and then die

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Quick 350
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#4 Unread post by Quick 350 »

The CL350's did have small drainage holes to allow water to drain out.

CL's where on off road bikes so water was eminent at some point in these bikes lives.

Now the SL's where marketed as mainly off-road and had low mufflers with no drainage.

Go figure the thought on that one?

your still carbon fouling plugs?

How are your air cleaners? dirty air cleaners causes carbon on the plugs.

So does excessive idling, plug heat range to low, weak ignition system, & fuel/ air mixture too rich

All things I'm sure you’ve checked over and over! :frusty:

Stick with it I'm having some of the same problems with my 73.

Mike

shoey949
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#5 Unread post by shoey949 »

Well actually I'm not fouling plugs anymore but I'm running the 60 and 105 jets, so the smaller main jet, and now runs quite well. So should I just not sweat it that I'm using a smaller jet?
1973 Honda Cl 350 (Sold)
1982 Honda 650 Nighthawk
1978 Kawasaki KZ 400 (Sold)
1983 Kawasaki GPZ 550

But someone will say, "You have faith; I have deeds."
Show me your faith without deeds, and I will show you my faith by what I do.

James 2:18

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Quick 350
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#6 Unread post by Quick 350 »

I wouldn't sweet it!

If the bike is running good and your not fouling plugs any more then the smaller jet size might have done it for you.

Now are you still having the dead throttle spot and the slow pull through the RPMs?

If so you might want to synchronize your carbs. I notice on my 71 after taking the carbs apart and giving them a good cleaning that I had similar problems.

Used that trick carb sync set up that Skier posted in General Maintenance & Appearance worked out real well.

Good luck!!!

and post back!

Mike

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