New Vibration

[Deleted User 287]

Here you go! You can buy some plug shorting-out tools here!

http://www.northwoodsairheads.com/Tools.html

I can feel the power pulsing through my veins already.

The reason for my laughter was I made my own back in the 80's from some threaded rod and a couple of the spark plug caps that we all throw away when we install a new set of plugs.

[Garnet]

They where the first BMW tools I made. I used them once and found out how good the coil was on that side .

They flew across the shop to never be used again.

[Chuey]

Man, all I could think about when I read the title of this thread is the Beach Boys!

Chuey

[Roy Gavin]

There are a few ways to check carb balance, or to set deliberate imbalance to equalize running.

By ear, feel on when the butterflies move, mercury sticks or the $4- equivalent, Twinmax, Carbtune, plug shorting and a flow meter similar too the Synchrometer. And probably some I've never used.

I haven't tried the shorting method, but I have found that precise setting of the butterflies and cable free play or by ear gets as close as the Twinmax or the Carbtune, the $4- special is better than the Carbtune, and a flow meter gives a different reading to a vacuum gage.

And it all goes out of tune before too long.

My seat of the pants feel says the flow meter works best for me - anyone know of a comparison done on a dyno , and how the shorting method compares to a flow meter.

The OEM BMW mechanics tool kit was reputed to contain a couple of flow meters, so the factory seems to have an opinion---.

And iwhen chasing a roughness don't discount a plug cap breaking down above a certain revs - if the cold resistance is not spot on the stated value junk it- DAHIK

[enigmaT120]

Good thing Duane isn't dead - he'd be spinning in his grave.
But we could hook up a dynamo and generate free electricity!

I love that kind of humor, where it startles me into laughter.

[Deleted User 62]

Man, all I could think about when I read the title of this thread is the Beach Boys!

Chuey

Actually, it was Tommy James and the Shandells song that kept going through my mind: http://www.youtube.com/watch?v=LN38vED24Eg

[Deleted User 62]

There are a few ways to check carb balance, or to set deliberate imbalance to equalize running.

By ear, feel on when the butterflies move, mercury sticks or the $4- equivalent, Twinmax, Carbtune, plug shorting and a flow meter similar too the Synchrometer. And probably some I've never used.

I haven't tried the shorting method, but I have found that precise setting of the butterflies and cable free play or by ear gets as close as the Twinmax or the Carbtune, the $4- special is better than the Carbtune, and a flow meter gives a different reading to a vacuum gage.

And it all goes out of tune before too long.

My seat of the pants feel says the flow meter works best for me - anyone know of a comparison done on a dyno , and how the shorting method compares to a flow meter.

The OEM BMW mechanics tool kit was reputed to contain a couple of flow meters, so the factory seems to have an opinion---.

And iwhen chasing a roughness don't discount a plug cap breaking down above a certain revs - if the cold resistance is not spot on the stated value junk it- DAHIK

Hmmm, you may be on to something there. As I said, there was a slight mechanical rattle when the vibration started. I will check those plug caps, etc!