Mikuni 29mm Jet Block

BIGKEVIN wrote:

I can get a replacement jet block from redline like any9802gt said, but I cant get the rod out of the carbs to get them separated. Can someone help me again ?

Not seeing the jet block specifically listed at Redline,
redlinecycle.com/Carbs%20-%20Parts%20-%20VM29.html
Guessing availability was determined by private inquiry.
What was the quoted price from Redline for a jet block?
As compared to the $49 repair offered at wgcarbs.com

Separation of carbs isn't necessary to remove and replace a jet block.

There's a small Phillips screw into bottom of jet block.
The screw holds the jet block at correctly oriented position in relation to the bore.
The screw is slightly off-center.

The screw should be tightened only very gently into position.
Overly tightening the screw when replacing the jet block upon reassembly of the carb will cause the jet block to slightly distort out of position, whereupon the throttle slide will scrape against the jet block and not move freely up and down.

Keep Godzilla away from said screw.

Good Fortune!

I took the little screw out from the bottom of the carbs, but still could not get the jet block out. Does the needle have to came out also ? It does down into the jet block.

kawsakiman wrote:

BIGKEVIN wrote:

Does anyone know if the jet block from a different size carb is the same as the 29mm ?

only 29's have a seperate jet block.
that is part of what makes them smoothbores.

come on guys, someone help this guy out.

( maybe a photo of your bike and face for us to chop to hell would help. :evil: )

I posted a link to a replacement jet block thats offered what more can i do ???

BIGKEVIN wrote:

I took the little screw out from the bottom of the carbs, but still could not get the jet block out. Does the needle have to came out also ? It does down into the jet block.

It's been a while, but recall first removing the throttle slide (together with the jet needle) through the carb top after loosening the slide control linkage, which left the jet block held in its normal position by the mentioned small Phillips screw.

Good Fortune!

DFIGPZ wrote:

kawsakiman wrote:

BIGKEVIN wrote:

Does anyone know if the jet block from a different size carb is the same as the 29mm ?

only 29's have a seperate jet block.
that is part of what makes them smoothbores.

come on guys, someone help this guy out.

( maybe a photo of your bike and face for us to chop to hell would help. :evil: )

I posted a link to a replacement jet block thats offered what more can i do ???

The link to wg's jet block repair information was an excellent reference.

k-man correctly answered the question about jet blocks being an exclusive feature of smoothbores. (Both 29's and 33's have 'em).

what more can i do ??? -- sit tight while awaiting latest and greatest photochop of kawsakiman. :woohoo:

Good Fortune!

I got the jet block out today. I wasn't sure if the carbs had to come apart or not. With the help of others on here, I finally got it done. Waiting for the new part to come in.