I may have discovered something valuable

[Chrisj CMA]

Yesterday while it rained all day I decided to install some chrome I bought from a fellow VRCC member.  I removed the carb tops and installed Cobra tops.

Now, I never had one of these things off before, but the stock toppers are two parts, the chrome is just decorative and the real cover is a black ugly thing under the chrome.

I dont know the function but the real cover, the black ugly one under the chrome is vented in the bottom tab.  The Cobra covers are all one piece and vented as well.  It seemed to me the vent hole was larger on the Cobra part.

Again Im no scientist, so I do know what that all does, but after installing the cobra covers some minor decel popping that had been irritating me lately is gone.  If the tiny vent holes have anything to do with decel popping, it would seem to me very easy for some of them to get clogged with a minute particle.

I washed all the OEM parts I took off, and they were fairly clean where it mattered but there was enough junk in and around the area the vents were that a tiny piece can easily block the venting process.

Just a thought, what do you smart guys say???

[Chrisj CMA]

How rude of me to add chrome and not attach the obligatory pic 

[hubcapsc]

How rude of me to add chrome and not attach the obligatory pic 

Oooo... you have the Cobra reservoir cover too  - I'm not taking a picture of
mine until I paint (or somehow remediate) my ugly ruste starter.

-Mike "don't polish the zinc off your starter"

[Chrisj CMA]

ya hubcap.....Im looking for a cobra snake hood ornament to put on the front fender.....I have like 12 or 13 Cobra pieces now..........

[Madmike]

I dont know the function but the real cover, the black ugly one under the chrome is vented in the bottom tab.  The Cobra covers are all one piece and vented as well.  It seemed to me the vent hole was larger on the Cobra part.

Again Im no scientist, so I do know what that all does, but after installing the cobra covers some minor decel popping that had been irritating me lately is gone.  If the tiny vent holes have anything to do with decel popping, it would seem to me very easy for some of them to get clogged with a minute particle.

I washed all the OEM parts I took off, and they were fairly clean where it mattered but there was enough junk in and around the area the vents were that a tiny piece can easily block the venting process.

not too smart but am opinionated....

It sounds very plausible to me...

I do know that on the small square block carbs that are used on powersaws there is a small vent hole on the side of the pulse pump that is used to transfer fuel to the carb, the cover plate on that has a small vent hole and they tend to become plugged over time with fine sawdust.  When they are plugged it definitely effects the performance of the diaphragm that acts as the pump...  The diaphragm on the top of the carbs moves up and down to keep the velocity of the air ± constant and so if the vent hole is obstructed it could have an effect on how fast the carb responds to throttle change and may lead to some problems...

Good thought ......

[BF]

chris........Are you in Crestview?  Do you ride with any group.....the Sandollars maybe? 

[Chrisj CMA]

chris........Are you in Crestview?  Do you ride with any group.....the Sandollars maybe? 

Im in Crestview........I know a couple of riders in the sandollars, but they usually ride on Sunday.  I ride with  Patriat Guards....some Cma'ers, our church group and others just Crestview Bikers, we meet on Monday night.  You are on Eglin AFB right???

[BF]

Nope...Cinco Bayou.  I work on Eglin at the Climatic Lab.  Rotating shift...which makes it very hard to get up with anyone to ride.