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Discussion Starter · #1 ·
Ok, here we go, Just my opinions & findings
Project was very easy, 5 minutes total.
wd-40 helped marbles go in easier
did not have to remove seat or anything else.
I just put in 40 miles and I can say there is a distinct difference in tone
at the Higher rpm's on Decel. Much more pleasing,
The sound at lower rpm's did not change much if any.

so, for those wondering, Go for it, cost is minimal and it's easy to do
and quick


Just my .02

Dave
 

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Think First - Insert Marbles

Uh, I wasn't the last one off the turnip truck...but would you mind explaining what you're talking about? If it's about carb stuff...thanks anyway...I've got FI
 

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Official BTK Forum Pot Stirrer
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did the flatulation sound go away completely or just reduced? I'm intersted in the better tone as well....thanks for being the guinnie pig
 

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Go for it, cost is minimal and it's easy to do
and quick
I agree and have 98 mables left if anyone needs them.

My engine seems to run hotter. Anyone else notice this?
 

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re

if you don't use a marble the same color as the bike it won't work :p
 

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if you don't use a marble the same color as the bike it won't work
They said to use 1/2" Dia. marbles. I measured them with a mic and one was 0.601 and the other is 0.602. Will they still work?
 

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Discussion Starter · #8 ·
Spok, its very hard to describe the sounds, At hi rpms it sounds more like a constant low rumble on decel
low end still seems to go plop plop plop to some degree
but over all its an improvement

Dave
 

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grunt said:
Go for it, cost is minimal and it's easy to do
and quick
I agree and have 98 mables left if anyone needs them.

My engine seems to run hotter. Anyone else notice this?
Its supposed to make the engine run cooler (which is better) by eliminating the combustion at the exhaust header. I used coasters to replace the reed valves. However, I can't really tell if the engine is running hotter or cooler
 

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Can't tell if the engine is running hotter, but my cobra exhaust pipes seem to be hotter than they were before the marbles. It did make a nice improvement in performance. No more backfires and the throttle response is crisper.
 

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grunt said:
Can't tell if the engine is running hotter, but my cobra exhaust pipes seem to be hotter than they were before the marbles. It did make a nice improvement in performance. No more backfires and the throttle response is crisper.

Hmmmm....Hotter pipes....Crisp throttle response....Maybe a faster ride now? :) Or would that be a faster driver? :)
 
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