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critical float height?

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01 Jan 2006 10:29 #15514 by arobsum
critical float height? was created by arobsum
i recently went thru my vm28's. i thoroughly cleaned them and re-assembled them the same as disassembly. the ports are clear, no blockages. the # 1 overflowed even though the float height was correct(24mm). i raised the floats slightly and fixed the overflow but now when you roll on the throttle it sputters. seems to run fine at idle and low speed. is the float height that critical? could 1mm difference be that touchy? i also did the rough sync. on them, all slides appear to be about the same. i usually run pods but for the test run i had no filters on the bike. carbs were open in the back.

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01 Jan 2006 16:45 #15528 by arobsum
Replied by arobsum on topic critical float height?
apparently the float height is that touchy. i put a spare set of carbs on the bike and it runs fine. definitely the 28's.

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  • Biquetoast
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01 Jan 2006 17:14 #15531 by Biquetoast
Replied by Biquetoast on topic critical float height?
arobsum wrote:

apparently the float height is that touchy. i put a spare set of carbs on the bike and it runs fine. definitely the 28's.


Sorry I'm not familiar with your carbs, but I will say "yes" - float height change of 1-2mm on my carbs made a HUGE difference.
(1.) '75/'76 KZ400D - Commuter
(2.) '78 KZ750B3 Twin - Commuter
(3.) '78 KZ750B3 Twin - Commuter
(4.) '75 KZ400D - Sold
kz750twins.com

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