Thread: '93 SL750 help please
04-21-2011, 07:26 AM #1
'93 SL750 help please
Anybody happen to know the stock carb settings? I can only find settings back to '95 and that shows center carb high speed only 3/8 turn out??? Also there was no restrictor pill on this one but the return lines only have small openings out of the carbs, they're not fully open. Do I need a restrictor? Thanks for any help.
04-21-2011, 08:33 AM #2
Yes, you absolutely need a restrictor in the return line.
OEM settings for the carbs:
Low Speed = 1/2 turn
HS MAG = 7/8
HS CEN = 1/2
HS PTO = 5/8
Main Jet #77.5
Low Jet #72.5
Idle RPM 1250 +/- 50
Pop-Off = 10-18 PSI
Finally, if you have not already upgraded to a 3-outlet fuel pump do so now while you're tooling with the carbs. John Zigler has the complete kit for a very good price.
04-21-2011, 09:06 AM #3
Thanks. I just rebuilt the carbs, replaced some fuel lines (no restrictor found) removed the autocock, and upgraded to the triple outlet pump, not to mention a new starter, and gaskets. Do you happen to know the hole size for the restrictor? I can just drill a holley jet or something i imagine.
04-21-2011, 04:25 PM #4
After a little online research, it appears a Mikuni 90 is about a #63 drill bit, or a little bigger than 1/32". So I'll try that and see what happens.
04-21-2011, 08:25 PM #5
- Join Date
- Oct 2006
- Cleveland OH
Honestly, the 93 didn't come with the restrictor installed, but there's no problem with putting one in.
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