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VJ

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  1. VJ

    Gsx1100g Gearbox

    As i said it does seem like youve thought this through and tried a lot of things. Ive known a lot of IL4s vibrate quite badly if the throttles arent correctly synced to eachother though.
  2. VJ

    Gsx1100g Gearbox

    Sounds like you've exhausted a lot of options. One other one that comes to mind now ive thought about it, have you balanced the carbs recently?
  3. VJ

    Gsx1100g Gearbox

    aye Id be looking elsewhere, How are your engine mounts? Nice and tight? front mount rubbers not perished?
  4. VJ

    Gsx1100g Gearbox

    Having ridden both I dont rate the balancer system on the G to be honest, definatley not enough to make a modified set of cases to convert over to chain drive. The balancer it just saps a bit of power and doesnt really reduce vibes (I took the weight out on my last build) Also G engines are like rocking horse shit.
  5. VJ

    AFR tuning

    Well ive been out on the bike this weekend and found it was a bit lean on midrange so I popped home and lifted the needle, its running a lot better now. Im a bit confused now with my readings though. If I cruise at 8.5k then I get around about 13:1, 7k is around about 14.7:1 5k is around 12:1. However if I do a WOT pull from 3k up to 9k in 3rd I get around about 11:1 all the way through. Im a bit confused about where to go now but I think its close enough to be safe for now.
  6. VJ

    AFR tuning

    Interesting, that would suggest 20 seems to be a good size for me to try next then for pilots. I know what you mean about not wanting to take carbs off. Yeah im glad I got the wideband setup, ive been fucking around with 'seat of the pants' dyno tuning for years but its really reasuring to see a gauge co oberate my thoughts.
  7. VJ

    AFR tuning

    weather is absolute shite here today so I havent had the chance to go out on the road to test today. Ive now got 157.5 mains fitted, 15 pilot jet, and the needle on the middle position. When I fired it up with 15 pilot jets and 2 turns out on the screw my gauge was pinging very lean (off gauge even) so I dialed the pilot screw out half a turn at a time to see what I could get it down to. I came to a comprimise and stopped at 4 turns out being 15.8/16.5 on my gauge. Ideally id like it a lot richer but I dont want to unscrew the screws anymore incase they fall out. I think I'll be putting some meatier pilot jets in when I get the time but I think that will do for now on the bottom. Just waiting for a dry day to go test my main and needle afr and see if I need to buy any more brass other than pilot jets before i trek back to allens. Cheers John
  8. VJ

    1100 shafty

    Book says 94-127Nm. If you want to PM me an email address I can email you the service manual if you want.
  9. VJ

    AFR tuning

    So I popped into allens in bingham on friday and got some 157.5 mains (they didnt have 4 160s avaliable) Ive just put them in and also dropped my needle one as suggested by say what now!?. as for pilot jets I realised they are unbranded '30' size so in the interest of knowing where I am and getting a better baseline figure Ive put some actual mikuni 15s in to see what I get there. Work stops play for a few days now though, hopefully I can nip out on thursday afternoon and see how its running now.
  10. VJ

    AFR tuning

    Yeah Im glad its rich rather than lean but it deffo needs fixing, its easy enough for me to do needle height with the carbs still on the engine so im not too fussed about doing it in one hit. Luckily Ive got an NSL road near me that is a long hill so im sorted for loading, yeah its not going to be as quick or as accurate as a dyno but im mostly doing it as a learning exercise.
  11. VJ

    AFR tuning

    So ive just been out for my first ride with the AFR display on. Im getting around about 10.5-11:1 at idle all the way up to 7k rpm (ish) then it leans out to 14.5 and even dips into high 15s. as I hold it at 8.5k Now these figures are all by eye not data logged to the rpm so I cant be 100% accurate, im more trying to hold an RPM and see what I get, It has told me I need bigger mains in it so I'l go from 150 to 160 mains and see how it looks on the top there. Im also not going to change anything else until I've got mains dialed in, seen as fuel through the emulsion tube past the needle will be effected by the main jet size it seems a bit like pissing in the wind to change that before Ive got the mains happy. Cheers VJ
  12. VJ

    AFR tuning

    Thats great cheers, To be honest I'd have been very suprised if there was an x=y straight ratio for it condisering how many variables there are but its good to have a ballpark idea of how many sizes to jump. Cheers VJ
  13. VJ

    AFR tuning

    Hi guys and girls, I'm looking for some advice on tuning. I've set up a wideband o2 sensor setup on my old ratbike now and will be going out for trial runs over the next few days and noting the AFR at WOT,3/4, 1/2, 1/4 etc ready for me to make adjustments to suit. My question is: is there a clean cut number between jet sizes and AFR ratio to help me dial it in without having to buy too many jets? e.g -5 on jet number = 1afr etc. Also same question with needle heights. If anyone is interested in specs its a gsx1100g with a DOT head and cams, 36 CVs with pipercross sock filters and a cut down micron on a 4-1 pipe. I'll update this as I get the runing done incase it helps anyone in the future. Cheers John
  14. VJ

    Oil Pumps

    well I took it apart and its fucked, loads of scratches and pitting everywhere, time to get on eblag and find a cheap spare. Cheers John
  15. VJ

    Oil Pumps

    gsx1100g shaftdrive
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