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Mikuni BS carb swap
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Mikuni BS carb swap
Hello, I just found a set of 34 mm mike I BS? Carbs from a Gs1100. I was thinking this would be an excellent upgrade and good value for a performance build up of my 79 Gs1000. I understand the pet kick may not work with this swap? Also how can I use the stock air box? I feel it needs to go in the bin and use pods. Is this set up tuneable , will a dynojet kit address a big bore -1175, ported head, hot cams? Probably not eh? Any suggestions over the 26 era is appreciated. I know " wired George" used to have a service to "oval bore and modify the vm26 out to 29mm. But this seems to have been dropped from his site.Tags: None
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To use carbs that large will require some SERIOUS adapters.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)
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GSX1000E
If you are planning on using an 1100 2-valve head, they will bolt right up as they came stock on those engines.
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jimbo
Carb swap
Originally posted by Steve View PostTo use carbs that large will require some SERIOUS adapters.
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GSX1000E
Any '80-up 1000 2-valve head is also a direct swop and those carbs will fit as they also came stock with them. The later heads also flow better.
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Don't trash the stock air box, clean it and put it on the shelf.sigpicMrBill Been a GSR member on and off since April 2002
1980 GS 750E Bought new in Feb of 1980
2015 CAN AM RTS
Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.
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Originally posted by GSX1000E View PostIf you are planning on using an 1100 2-valve head, they will bolt right up as they came stock on those engines.
Not sure if the G engines are any different than the Es, as far a bolt spacing and location.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)
Comment
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GSX1000E
I personally have swapped the G heads onto E cylinders/engines and visa versa thus the recommendation. Personal EXPERIENCE not hearsay.
One example, this '82 1100G is wearing a '79 GS1000 head along with 29mm smoothbore carbs...
The 1100 and 1000 heads are identical in combustion chamber volume/intake ports as well as valve sizes/parts with the major difference (besides the '83-up 1100 exhaust port shape)
between the 1000 and 1100 heads being that the 1100's use 12mm studs/nuts and the 1000's use 10mm studs/nuts.
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