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GSX 400E -83 chopper
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MotoX
So, looking in the service manual I can see a slight difference (which might not be so slight?). The Main Jet on my bike is 120 and should be 117.5 according to the manual. All other things is according to the service manual as long as the bike is a GSX400EX and not GSX400ET, and frankly I don't know, so should be a GSX400EX right?
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Beware the manual!
Which part of the world is listed on the front page (or 'early pages') of the manual? The carbs do vary a bit depending on the market - usually the US bikes were set up to run leaner than the rest of the world so your bigger 120 jets might be standard in Sweden.
Edit: Just checked and if your bike is a GSX400 1982 (SZ) European model it should have 120 mains.Last edited by hampshirehog; 07-29-2011, 04:18 PM.79 GS1000S
79 GS1000S (another one)
80 GSX750
80 GS550
80 CB650 cafe racer
75 PC50 - the one with OHV and pedals...
75 TS100 - being ridden (suicidally) by my father
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MotoX
Originally posted by hampshirehog View PostBeware the manual!
Which part of the world is listed on the front page (or 'early pages') of the manual? The carbs do vary a bit depending on the market - usually the US bikes were set up to run leaner than the rest of the world so your bigger 120 jets might be standard in Sweden.
Oh well, the thing for me to figure out now is what parts to change in to for my setup. If I can I will go with some sort of headers to the carbs and will probably weld a washer into the exhausts to restrict that air. So with the exhausts hopefully being like original in ways of air restriction I "only" have the air to the carbs to wory about. I guess I could make the headers tight but should probably need to rejet the carbs anyway right?
Should I change every one of those parts mentioned in previous post or just a few special of ones when i rebuild the air intake this drasticaly? Or do I simply have to test it out and change after testing once the rest of the bike is finished?
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Originally posted by MotoX View PostYeah it's a Haynes Manual printed in England.
The chances of you being able to use the original carb settings if you are chopping the exhaust / throwing away the airbox are remote - even if you do start making restrictions etc. You will have to either run the thing on a Dyno or do plug chops to tune the carbs in when you're ready.79 GS1000S
79 GS1000S (another one)
80 GSX750
80 GS550
80 CB650 cafe racer
75 PC50 - the one with OHV and pedals...
75 TS100 - being ridden (suicidally) by my father
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MotoX
Originally posted by hampshirehog View PostThe chances of you being able to use the original carb settings if you are chopping the exhaust / throwing away the airbox are remote - even if you do start making restrictions etc. You will have to either run the thing on a Dyno or do plug chops to tune the carbs in when you're ready.
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I would start it up and see how it goes using what you've got already. Chances are you'll just end up changing the mains, maybe the pilots (not the pilot air jets, though you might) and maybe shimming the needles.
You've only got 2 of each so it won't cost much to chop and change.79 GS1000S
79 GS1000S (another one)
80 GSX750
80 GS550
80 CB650 cafe racer
75 PC50 - the one with OHV and pedals...
75 TS100 - being ridden (suicidally) by my father
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Originally posted by MotoX View PostAlso don't appologise for the Haynes books, maybe they have faults but it's often better than nothing right?
Have you looked on Cliff's page to see if he has got the original Suzuki manual?
79 GS1000S
79 GS1000S (another one)
80 GSX750
80 GS550
80 CB650 cafe racer
75 PC50 - the one with OHV and pedals...
75 TS100 - being ridden (suicidally) by my father
Comment
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MotoX
Originally posted by hampshirehog View PostI would start it up and see how it goes using what you've got already. Chances are you'll just end up changing the mains, maybe the pilots (not the pilot air jets, though you might) and maybe shimming the needles.
You've only got 2 of each so it won't cost much to chop and change.
Oh well, I gues I'll just be patient and complete the bike first then and then plug chop my way to perfectionInteresting thing you said about the needle though, do I shim it up? Don't I buy a new smaller one?
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MotoX
Originally posted by hampshirehog View PostHave you looked on Cliff's page to see if he has got the original Suzuki manual?I havn't looked through the linked pages though, might spend some time another day scrolling through those.
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I think, spare yourself some trouble and get Dynojet kit for 1100 (8v), or for 850. It comes with air jet restrictors, adjustable needles and 3 different main fuel jet sets. Airjet restrictors I don't think you can get anywhere else from but Dynojet. The OEM needles in your carbs are likely adjustable (unlike for the USA market) BUT Dynojet needles have a different taper to them so are a better option.
Dynojet may be willing to sell you 1/2 kit, i.e. for two cylinders.
Then you've got all the parts you need for fine tuning.
The diaphragms are not sold separately but only with the piston and cost you through the nose OEM. I seem to remember seeing them available aftermarket... but where...? Anyone?Last edited by psyguy; 07-29-2011, 07:10 PM.GS850GT
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BassCliff has a Clymer manual on there as well, get that one and don't use torque figures from the Haynes, I stripped one thread for the gear changing arm in the crankcase because they had twice the torque rating figure listed1982 GS450E - The Wee Beastie
1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020
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450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh
Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11
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Forum LongTimerGSResource Superstar
Past Site Supporter- Oct 2006
- 13906
- London, UK to Redondo Beach, California
Not available aftermarket... At least not unless you have a full machine shop to modify the slides to fit the new ones! Someone here did... GregT perhaps??1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar.....
www.parasiticsanalytics.com
TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/
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Originally posted by MotoX View Postdiscovered that one membrane has a hole in it.GS850GT
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MotoX
Originally posted by psyguy View Postyou can buy a rattlecan of sprayable rubber that you can use to fix the membrane if the damage is just a worn out membrane that's got very thin - but if there is an actual hole then that won't work
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