What Mikuni Carb is this?
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Herman T
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What Mikuni Carb is this?
Could anyone tell me for sure which carb this is? It is from my dragbike. The opening on the intake side is 33mm. I'm thinking it might be a stock carb from an earlier GT750, 72 or 73? Stamped on the carb near the choke are the numbers 310 and 13L.
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water cooled
- Yeah Man, the Interstate
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water cooled
- Yeah Man, the Interstate
- Posts: 704
- Joined: Thu Oct 23, 2008 3:23 pm
- Country: USA
- Suzuki 2-Strokes: 1974 Suzuki GT750
- Location: Medina OH
Re: What Mikuni Carb is this?
There are a few guys on this Forum that are very good at identifying stuff....but here are my 2 cents....
That brass nipple on the motor side of the carb throat might have been for the SRIS system though it seems a bit big for that. Does your motor have the SRIS system still intact? I know on the 1974 block, the L SRIS came underneath and went into the intake tract within the block. This is just a guess....but it might be a 72 GT carb.
That brass nipple on the motor side of the carb throat might have been for the SRIS system though it seems a bit big for that. Does your motor have the SRIS system still intact? I know on the 1974 block, the L SRIS came underneath and went into the intake tract within the block. This is just a guess....but it might be a 72 GT carb.
Last edited by water cooled on Sun Oct 30, 2011 4:37 pm, edited 1 time in total.
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tz375
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Re: What Mikuni Carb is this?
They appear to be stock 72/73 zinc bodied carbs. Those small brass barbs are a breather connection IIRC abd the odd "powerjet" type drillings are a breather to teh float chamber. It was a way to tilt the fuel curve.
Look for a set of 38mm TM flats from a sled and jet them to suit.
Look for a set of 38mm TM flats from a sled and jet them to suit.
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Herman T
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Re: What Mikuni Carb is this?
Thanks guys. For now, these carbs will have to do as long as they work. I am sure in the future though, different carbs will be on the bike. 
Odd thing is, the main jet is a 132.5. It was mentioned to me that this might be because of the 3 into 1 pipe. The jet is brand new. I haven't checked the other carbs yet to see what is in those. I would think that whoever put the new jet in would put the same one in that was there before but I won't know that for sure until I look at the other carbs.
Odd thing is, the main jet is a 132.5. It was mentioned to me that this might be because of the 3 into 1 pipe. The jet is brand new. I haven't checked the other carbs yet to see what is in those. I would think that whoever put the new jet in would put the same one in that was there before but I won't know that for sure until I look at the other carbs.
