Question about 1982 Suzuki GS 650 G Katana

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Put on headers,and pods 1981 gs 650 e need jetting info

Put on Mac 4-1 header,,baffle in,took off complete stock air box,now set up with the rubber v-stacks that were part of the stock set up,,bike wants to start but wont stay running at idle,,put in VERY large main jet and the motor ran away,,,what about the pilot or low speed jets (very small)stock ones,cant read the numbers on them if they are there at all the numbers on the main jetic110..hope you can advize..cvcarbs

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: 1983 suzuki gs 750 New airpods and jets. Bike not running right

You are dealing with Suzuki vacuum carbs, you cannot just replace the air box and re-jet. What you are running into is there is no pressure to raise the diaphragm because there is no restriction to create such vacuum. Either put the stock box back on or go to the biggest main jets you can buy. Sometime even when you get stage 3 jets you still have issues. Vacuum carbs are not made to run with no restrictions.....putting aftermarket exhaust on it will make things much worse.

Posted on Sep 30, 2009

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SOURCE: What jet sizes???? GS750.

i put 115 main jets in my 77 ge 750 and it will run but was told to jump up to 140 with pobs and 4into1 pipe (SM6) race pipe at the low side run 130 main and leave the stock pilot in. i rorde mine from NE to SD roude trip about 1300 miles got about 62 MPG with 115 jets jumping up to the 140 will drop the MPG but lets be real im not looking for MPG. hope this will help.

Posted on Nov 18, 2010

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I took off air box added airpods with stock exhaust on a 1981 suzuki gs 650 what size main jets should i replace with


Richard, I would suggest you go with a stage 3 jet kit for improved air flow. Ebay has them for a great deal. I'll post a link. Good luck. ^^
Dynojet Stage 3 Jet Kit For Suzuki GS650 GS 650 1981 1982
25827945-ug2cc0zr24d5nrk3krvdzvs0-1-0.jpg

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1982 maxim 650 idles rough


Hi, Anonymous and the usual suspects are:
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5. Loose low-speed jet.
6. Plugged low-speed jet.
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Hi,just got a dynojet stage 1/3 kit for my 1980 honda cb650, it's on standard air box, but 4 into 1 exhaust, I take it I should use the stage one kit. Also I have no instructions can you help...


Intended for motorcycles with a stock engine using the stock airbox, air filter and stock pipe. Stage 1 kits are fully adjustable to allow the use of a well designed aftermarket pipes and stock replacement air filters like K&N. Stage 1 kits are designed to improve throttle response and driveability and in most cases power increases of approximately 5% throughout the entire power range can be achieved.


STAGE ONE INSTRUCTIONS
1. Remove the vacuum slide from the carbs. Remove the stock needles & spacers, noting the order of
assembly. Locate the slide lift holes (Fig. A), with the slide drill DD# 14 supplied, enlarge your slide lift
holes. The picture may not show your slide exactly, enlarge your slide lift hole or holes depending on your
model. Do not drill any new lift holes. Do not drill the needle hole.
2. Install Dynojet needles on groove #4, using all stock spacers. Install the Dynojet washers (2 per
needle) above the E-clip.
3. Remove the stock main jets and replace with the Dynojet main jets provided. If you are running with
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4. Locate the fuel mixture plug (Fig. B), if you see a screw head, proceed to adjusting procedure. With the
DD #5/32 drill bit provided, carefully drill thru the plugs. Note: the mixture screw is directly underneath this
plug, be ready to pull back on the drill the instant you break thru. Use screw provided to secure and
remove the plug. Carefully turn mixture screws clockwise until they seat, turn out 3 turns.


For further info on this, visit: http://www.dynojet.com/jetkits/motorcycle/honda.aspx

You can find the manual for the model you are searching for. Follow the 1st column "CC" to find 650cc models and you can find your specific model after that.

Thanks for asking.
Regards,
Arvind S Iyer

Oct 15, 2010 | Dynojet Cycling

1 Answer

I have a 1981 650 gs650 motorcycle I have cleaned the carbs 3 times installed new needle and seat. air cleaner is clean. valves were checked for clearence have good fire but it is still running rich and...


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2 Answers

What jet sizes???? GS750.


i put 115 main jets in my 77 ge 750 and it will run but was told to jump up to 140 with pobs and 4into1 pipe (SM6) race pipe at the low side run 130 main and leave the stock pilot in. i rorde mine from NE to SD roude trip about 1300 miles got about 62 MPG with 115 jets jumping up to the 140 will drop the MPG but lets be real im not looking for MPG. hope this will help.

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2 Answers

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