Biggest jets ever put in a 650 carb that wasn't on alky/e85.... LOL That spec sheet is messed up!
The spread on the sheet is 7. Rarely have I seen a carb with a 4 jet spread.
My engine sure seems to want more jetting
- Thread starter Lil Demon
- Start date
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Biggest jets ever put in a 650 carb that wasn't on alky/e85.... LOL That spec sheet is messed up!
The spread on the sheet is 7. Rarely have I seen a carb with a 4 jet spread.
TT5.9mag
Two atmospheres are better than one
70/76 is what’s in my head for a 650
mopowers
Well-Known Member
Yeah, that spec sheet is wrong. I have that carb and there's no way the stock jets were 86/93.
TT5.9mag
Two atmospheres are better than one
Lil Demon
Well-Known Member
Yeah spec sheet was definitely off on the jetting. Like I mentioned earlier, I wrote what jets it had on the box which I still have. 70/74
Lil Demon
Well-Known Member
Most likely a simple Quality Control issue. I agree 70/76 seems most likely
a70duster
Well-Known Member
Freiburger goes into a lot of depth on how to tune a Holley. You'll need a wideband.
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