1983 GS750E Progress: - Page 3
Close

1983 GS750E Progress:

This is a discussion on 1983 GS750E Progress: within the Project Builds forums, part of the Caferacer.net Forums category; Got the wideband fully functional tonight. Going to do some observation on a cruise tomorrow and see what adjustments I may need to do for ...

Page 3 of 5 FirstFirst 12345 LastLast
Results 21 to 30 of 42
Like Tree1Likes

Thread: 1983 GS750E Progress:

  1. #21
    Senior Member MK3Brent's Avatar
    Join Date
    Mar 2013
    Location
    Greenville, NC
    Posts
    282


    Got the wideband fully functional tonight.
    Going to do some observation on a cruise tomorrow and see what adjustments I may need to do for the carbs.

    Should be fun!

    '82 GS750E, '99 ZRX-1100
    "Tossing a few cherries on the manure wagon doesn't make it the dessert cart."

  2. #22
    Senior Member ILoveThumpers's Avatar
    Join Date
    Sep 2013
    Location
    Illiana
    Posts
    419
    Sweet! Those are very valuable tools. Are you using a heated O2 sensor? If not, don't believe any reading you get until you're certain its up to operating temp.

    -Deek

    Sent from my LT30at using Tapatalk

  3. #23
    Senior Member MK3Brent's Avatar
    Join Date
    Mar 2013
    Location
    Greenville, NC
    Posts
    282
    Quote Originally Posted by ILoveThumpers View Post
    Sweet! Those are very valuable tools. Are you using a heated O2 sensor? If not, don't believe any reading you get until you're certain its up to operating temp.

    -Deek

    Sent from my LT30at using Tapatalk
    Yes, the o2 sensor is heated. The first few seconds of the video are counting up to 100% heated.

    '82 GS750E, '99 ZRX-1100
    "Tossing a few cherries on the manure wagon doesn't make it the dessert cart."

  4. Remove Advertisements
    CafeRacer.net
    Advertisements
     

  5. #24
    Senior Member ILoveThumpers's Avatar
    Join Date
    Sep 2013
    Location
    Illiana
    Posts
    419
    Cool beans.

    -Deek

    Sent from my LT30at using Tapatalk

  6. #25
    Senior Member MK3Brent's Avatar
    Join Date
    Mar 2013
    Location
    Greenville, NC
    Posts
    282
    Really glad I got the wideband working...low speed jet is piggg rich. Pegging the meter. Going to swap some smaller jets in there soon

    '82 GS750E, '99 ZRX-1100
    "Tossing a few cherries on the manure wagon doesn't make it the dessert cart."

  7. #26
    Junior Member cale32's Avatar
    Join Date
    Jan 2013
    Posts
    13
    that thing is junk


    Quote Originally Posted by MK3Brent View Post
    Hey, friends.

    I was working really hard trying to finish a few add-ons to this bike before last weekend, but as luck has it... I had clutch issues at the last minute.
    The clutch basket pressure plate boss has a stripped threaded hole, so I'm replacing the entire assembly with new Suzuki parts. Going back to Suzuki pressure plate springs, and ditching the Barnett stuff.

    I really respect the opinions and suggestions I have received here on my other bike thread, so I figured I'd get some more input for this one.

    What I'll do here is write out what I've done already, and leave it open for suggestion for further upgrades.

    Modifications:

    Ignition:
    Dyna-S ignition (Deleted ignitor, stock coils, wires, NGK plugs .032" gap)

    Suspension:
    Suspension Front - Front forks are from an 82' E, removed stock pre-load spring and spaced the damper 2.5", these forks have schrader valves for air pre-load, currently have 0psi until I get it running soon. Sag in the front is approximately 30mm.
    Suspension Rear - Rear schocks are Ohlins SU-143, sprung for my weight.
    Rear swing arm - GS1100E, I drilled and reamed the frame for the larger pivot bolt. All new bearings/seals.
    Stock anti-dive units were cleaned and rebuilt, a new front end is in the plans. Maybe in a couple years.
    Standard clip-ons, can't remember where I got them.
    Stock gearing, fresh 630 chain. I'll probably convert when these sprockets are worn out.

    Frame:
    Few misc. features deleted from the frame such as battery mount tabs, and other misc. tabs.
    Rear tail section is cross braced with 1" x .125" angle steel. (Serves as a battery mount as well.)
    Rear-sets from a 2004 GSX-R. The brackets I fabricated out of 1" C-Channel steel .125" THK, and a milled slot.
    I turned down some carriage bolts from 316SS such that the head of the bolt slides nicely in the channel, and allows adjustment for proper riding posture.

    Brakes:
    Rotors, calipers are stock.
    Pads are NOS.
    Brake lines are teflon lined SS braided.
    All brake components are rebuilt and cleaned.

    Carbs:
    53mm Mikuni CV carbs
    Dyno-Jet Stg. 3 with adjustable needle jets
    Mikuni 70mm velocity stacks, aluminum.
    All cleaned and rebuilt.

    Exhaust:
    Vance Hines, 4-1. (rest of exhaust not pictured.)

    Electronics:
    Innovate XD-16 wideband O2 sensor and gauge/data logger.

    Battery:
    Odyssey PC680 sealed.

    I think that's about it... Running a mis-matched tire right now. Contemplating a nice new set for the season, but haven't done anything yet.

    Here are a couple pics. I'm going to clean it up a little more here soon. I have a CR-750 fairing coming for it with in the next couple weeks. Air Tech is currently making it for me, so I'll see how much I like it when it's here.

    Anyway, have a look.
    If something I have done is down right stupid... please educate me.
    As always, I'm here to learn.









    One of the sliders before painting:

  8. #27
    Senior Member YucA's Avatar
    Join Date
    Jul 2010
    Location
    Miami, FL, USA.
    Posts
    865
    Quote Originally Posted by cale32 View Post
    that thing is junk
    Junk? More functional than your orange turd.

    Mk3Brent - Bike is lookin proper. Diggin the small details.

  9. #28
    Senior Member nicebikemate's Avatar
    Join Date
    Oct 2013
    Location
    Oxford, England
    Posts
    522
    Edit - delete to avoid dragging this decent thread into the belly of diabtribe and abuse that I might have instigated.
    Last edited by nicebikemate; 05-14-2014 at 09:43 AM.
    Ignorance Is Bliss

  10. #29
    Senior Member Teazer's Avatar
    Join Date
    Mar 2010
    Location
    , IL, .
    Posts
    2,905
    Quote Originally Posted by MK3Brent View Post
    Really glad I got the wideband working...low speed jet is piggg rich. Pegging the meter. Going to swap some smaller jets in there soon
    Max power is about 12.5 - 13.2:1 (more like 10:1 on a turbo) and at idle to low revs you will see some rich looking numbers in the same sort of range. Idle at 14-15 creates driveability problems, so you want to start at say 13:1 and work up or down from there to get it to run cleanly. Lean idle (Stoich) causes stumbles. . On cruise, 15-16 is the target if the motor doesn't need a little extra fuel to keep itself cool.

  11. #30
    Senior Member MK3Brent's Avatar
    Join Date
    Mar 2013
    Location
    Greenville, NC
    Posts
    282
    Yes, I have many years of turbo tuning and WB datalogging experience.
    The meter is pegged at cruising speeds.

    At WOT, I'm actually right where I want to be mid 12s-13.

    I just need to either play with the jet, or possibly adjust the air screws... but that will lean out my WOT range too.

    Best to start with the jet.

    '82 GS750E, '99 ZRX-1100
    "Tossing a few cherries on the manure wagon doesn't make it the dessert cart."

Page 3 of 5 FirstFirst 12345 LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. 1983 BMW R80 RT
    By anup_vince in forum General
    Replies: 78
    Last Post: 08-26-2014, 10:14 AM
  2. 1979 Suzuki GS750E, lightly modified (Indiana)
    By gearheadE30 in forum Bikes For Sale
    Replies: 5
    Last Post: 12-29-2013, 07:50 PM
  3. 1983
    By ukTony in forum General
    Replies: 13
    Last Post: 10-13-2012, 12:03 PM
  4. 1979 Suzuki GS750E
    By spacmanspif300 in forum General
    Replies: 15
    Last Post: 09-19-2011, 03:30 PM
  5. 1981 GS750E, lots of extras
    By makenzie71 in forum Bikes For Sale
    Replies: 3
    Last Post: 03-13-2010, 08:51 AM

Search tags for this page

1981 suzuki gs750 cafe racer

,
1983 gs750 cafe racer
,

1983 suzuki gs750es

,

gs750 cafe racer

,
gs750e
,

gs750e cafe

,
gs750es
,
replacing swingarm gs750e
,
suzuki gs750es cafe
Click on a term to search for related topics.