V4 Carb Sync Guide

Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Johannes
Settled in member
Reactions:
Posts: 34
Joined: Thu Jul 03, 2014 11:38 am
Re: V4 Carb Sync Guide

Post by Johannes » Thu Jun 14, 2018 11:33 am

Just reviewing this very informative thread and having not done this before a question came to mind (given that i'm taking my carbs off my 24 this weekend to clean, new pilot jets and new intake rubbers), which is "what is the synch screw doing?" I am assuming that it is adjusting the mechanical linkage to the butterflies??? Am I correct?

I'll go hunting for a similar thread for the NC24, but assume that the process is very similar.

Cheers.

Neosophist
Moderators
Moderators
Reactions:
Posts: 9309
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: ZXR400 / VFR400
Re: V4 Carb Sync Guide

Post by Neosophist » Fri Jun 15, 2018 5:10 am

Yes, it just changes the freeplay between the linkages. The NC24 has 4 separate vaccum ports, one of them is not shared with the vaccum tap as the NC30 is so you can leave the tank connected or if you remove the tank and use a dummy tank make sure that you block the vaccum hose.

There are only 3 adjustment screws and one fixed carburettor... adjust all the screws to ensure that all 4 carbs are pulling the same vaccum just off idle.

give the bike time to settle after adjustment and blip the throttle occasionally.

Try to sort it quickly, if the temp gets really high it can throw off the adjustment so best to wait for the bike to cool back down to normal running temp before continuning.
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...


Post Reply

Return to “V4 - Workshop”