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Search results

  1. KiwiAlfa156

    anyone go for a ride today? Pics?

    Sure did! It was part of the Legends parade laps and Andrew Stroud also raced it with the Post-Classics. Stroudy was pulling wheelies the length of the straights. There were 2 examples of the McIntosh Suzukis (GS/GSX engines in custom racing chassis built by Auckland Engineer Ken McIntosh, who...
  2. KiwiAlfa156

    anyone go for a ride today? Pics?

    Pics from the 2025 Motofest at Hampton Downs, New Zealand Rode out Sunday before last.
  3. KiwiAlfa156

    1980 GS 750E front sprocket 530 question.

    I did a 630 - 520 conversion recently on my 750. https://www.thegsresources.com/_forum/forum/technical-forums/performance-tuning-mods/1738589-17-tooth-530-front-sprocket/page2 There are some sprocket size comparison photos you might find interesting. I installed 17T/47T and here's what I...
  4. KiwiAlfa156

    gs450 - still not running right

    Can you post some pics of the damage?
  5. KiwiAlfa156

    gs450 - still not running right

    Can do, it's indicative of a lean idle mixture, either due to extra air (leak) or not enough fuel (clogged jet or passages).
  6. KiwiAlfa156

    gs450 - still not running right

    Did you remove the jets when you cleaned or just dipped the carbs with the jets in situ? Exhaust gas is about 350?F so that tallies with you hot pipe.
  7. KiwiAlfa156

    gs450 - still not running right

    The orientation convention is LH RH as if you are sitting on the bike. The other naming convention is Cylinder number 1 is the left most one, sitting on the bike facing forward. In the case of a twin, the RH cylinder is number 2. So to be clear. LH (cylinder 1) plug going brown, header is...
  8. KiwiAlfa156

    gs450 - still not running right

    The video was interesting. A question, when you are adjusting the carb sync and it runs more evenly, are you opening the RH carb more in relation to the LH (good cylinder) carb?
  9. KiwiAlfa156

    1981 GS850glx (BS32SS) Air screw/tuning help needed!

    Yeah, you're on to it. More fuel if its lean, less fuel if its rich. Let the AFR reading be your guide. The whole smaller main jet thing is about significant displacement differences (like 25% more capacity) drawing air thought the same carb diameter. You won't be comparing the needs of two...
  10. KiwiAlfa156

    gs450 - still not running right

    Are you sure it's running on both cylinders? Get it running and try pulling the plug lead on the side with the clean plug and see if anything changes. Replace the lead and try the other side. Report your observations.
  11. KiwiAlfa156

    1981 GS850glx (BS32SS) Air screw/tuning help needed!

    As the cylinders are fueled by carbs with identical Fast/Main Circuits (mains/needle jet/needle clip/main air jet) fuel delivery to each cylinder should be identical, so having four sniffers across the headers is redundant. A lambda per cylinder is only required when fueling is EFI (closed-loop)...
  12. KiwiAlfa156

    Gear indication

    They are a T10 wedge 12V, 3.4W, most auto parts stores will have them, but may be not the exact wattage, but you can get those on eBay, Temu, Aliexpress (might be a tariff on the last two, if you're in the US...) https://www.cmsnl.com/products/bulb12v34w-t10_0947112028/
  13. KiwiAlfa156

    1980 GSX400 - Still Stuck at 7k RPM After More Work

    Hmmm, how old is the Boyer unit? Was it new when you fitted it? Are there any identification numbers on the controller box? Do you have the kit number?
  14. KiwiAlfa156

    1980 GSX400 - Still Stuck at 7k RPM After More Work

  15. KiwiAlfa156

    1980 GSX400 - Still Stuck at 7k RPM After More Work

    I know this sounds silly but is the air filter new?
  16. KiwiAlfa156

    1982 GS450 - dynatek - advancer/timing help - what each marking means?

    The most important timing mark to dynamically align with strobe is the fully advanced.
  17. KiwiAlfa156

    1981 GS850glx (BS32SS) Air screw/tuning help needed!

    Hi There, I've used the colortune, and had good results (setting up air screws on VMs)... and not so good results... I think the colour variation is too blunt a tool for fine tuning BS fuel screws. The most accurate way is to fit an AFR (lambda) sensor and an ARF gauge... Or go old fashioned...
  18. KiwiAlfa156

    Unique 100 year old four stroke engine

    May be not waaay smarter, but they were truly pioneers and experimenters in a new field of technology. Cycle World (Kevin Cameron and Mark Hoyer) have recently done a pod-cast on the origin of the across the frame 4 cylinder, which began with the Gilera Rondine raced in the 1939. DOHC...
  19. KiwiAlfa156

    Kaizo Project

    Hey Dom, I do really subscribe to "your bike, your choice". So no judgement, just curiosity.
  20. KiwiAlfa156

    Unique 100 year old four stroke engine

    Seconding Greg's channel.
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