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  1. mercuno
    Post

    Help me ID please

    Yeah I was mulling over trying to source an airbox or deal with the headache of putting some cool looking pods or something on there. As far as...
    Post by: mercuno, Sep 7, 2013 in forum: XJ Technical Chat
  2. mercuno
    Post

    Help me ID please

    Sweet! thankgs guys.. now on to the mods. what to do what to do. I think I want to do another cafe seat and some clubmans or clipons. Needs...
    Post by: mercuno, Sep 7, 2013 in forum: XJ Technical Chat
  3. mercuno
    Post

    Help me ID please

    There it is!!! 523 cm cubed. So what is the id? a maxim 550?
    Post by: mercuno, Sep 7, 2013 in forum: XJ Technical Chat
  4. mercuno
    Thread

    Help me ID please

    I bought this little gem for 250. I have been on this forum before and had to sell my bike due to moving and I have missed her ever since. I found...
    Thread by: mercuno, Sep 7, 2013, 10 replies, in forum: XJ Technical Chat
  5. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Re: Horsepower mods ? Cant find a tell all thread for the 75 heck yeah, lemme know what the kit looks like . I am in the middle of buying a house...
    Post by: mercuno, Feb 12, 2012 in forum: XJ Technical Chat
  6. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    sorry for the wait. The shaft seals really helped. I can rev it up and down really nicely now and it will run with choke off after it warms up but...
    Post by: mercuno, Feb 9, 2012 in forum: XJ Technical Chat
  7. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    I appreciate that heads up. Seems to me I would need a jet change either way because it has a 4 into 1 exhaust and the dreaded pods with stocker...
    Post by: mercuno, Feb 2, 2012 in forum: XJ Technical Chat
  8. mercuno
    Post

    81 750 SECA CAFE.

    Decided on scrapping the cable setup to the master cylinder for a cbr unit with an angle on the resevoir because I am running clubman bars. Then...
    Post by: mercuno, Jan 30, 2012 in forum: XJ Modifications
  9. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    just pm'ed chacal for some seals and crush washers for the brakes. gotta wait on some funds before the 900 dollar project is done
    Post by: mercuno, Jan 30, 2012 in forum: XJ Technical Chat
  10. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    haha rub it in.
    Post by: mercuno, Jan 30, 2012 in forum: XJ Technical Chat
  11. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    Ah, I see, No it just spins back and forth as the valves open and close. It does however seem to have some endplay and that worries me. I can make...
    Post by: mercuno, Jan 29, 2012 in forum: XJ Technical Chat
  12. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    I may be talking about something different then...The butterfly valves are screwed onto this shaft. I couldnt see how it would operate without...
    Post by: mercuno, Jan 29, 2012 in forum: XJ Technical Chat
  13. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    Umm I just got it to run without:choke and when it would be close to dying I would keep it alive with the throttle. I notice something possibly...
    Post by: mercuno, Jan 29, 2012 in forum: XJ Technical Chat
  14. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    Well I have gone in meticulous detail to clean and purge all passages and orifices. I have notice that these carbs have been worked on before and...
    Post by: mercuno, Jan 29, 2012 in forum: XJ Technical Chat
  15. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    "Right now you're looking like a potential member of the "I've cleaned my carbs four times" club; there are a lot of members here." hahahaha...
    Post by: mercuno, Jan 28, 2012 in forum: XJ Technical Chat
  16. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    well I thought of that and what I meant by soaking it is that I just sprayed it down real good and shook off the excess to let it self dry tonight...
    Post by: mercuno, Jan 28, 2012 in forum: XJ Technical Chat
  17. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    I got it to run with the choke barely turned on. I adjusted the pilot screw out and it ran better. The it died and would not start again at all....
    Post by: mercuno, Jan 28, 2012 in forum: XJ Technical Chat
  18. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    oo la la. well since you put it that waaaaay.. :0
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  19. mercuno
    Post

    900 Engine in 750 Frame?

    what about that???any write up on it?? will the pistons swap into an 81 750???
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  20. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    cheapest EFI I have heard of for these bikes was 900 bucks. I would love to go for that conversion but it seems too expensive. anyone know of a...
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  21. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    thank you for that sir.will do
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  22. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    DOH... I never tried the pilot screws after setting them at 2-1/2 turns out. I might try and go in 1/2 a turn and see. thoughts?? I have...
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  23. mercuno
    Post

    Carb bench synched, will run and idle slightly high

    Oh my bejeezus!. I have cleaned and cleaned. I have checked jet sizes. I have done a serious bench sync. set the floats dry at 17.5mm as per my...
    Post by: mercuno, Jan 27, 2012 in forum: XJ Technical Chat
  24. mercuno
    Post

    81 750 SECA CAFE.

    on ebay look up niche cycle supply. The handles were like 18 bux and the grips were like 20? got it 2 days after I ordered it. I also made a...
    Post by: mercuno, Jan 27, 2012 in forum: XJ Modifications
  25. mercuno
    Thread

    81 750 SECA CAFE.

    I am starting this thread to make a log of all of the mods I will be doing. I bought the bike for 400 and have about 200 in parts for it so far....
    Thread by: mercuno, Jan 26, 2012, 7 replies, in forum: XJ Modifications
  26. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Oh yeah. I got a smoking deal on multiple dyno runs. He has some experience with boring out these xj's and decking the head enough to get a 12.1...
    Post by: mercuno, Jan 26, 2012 in forum: XJ Technical Chat
  27. mercuno
    Post

    estimated power gains from 818 bigbore on feebay????

    hey dark did you ever get yours put in? was it a worthwhile venture?
    Post by: mercuno, Jan 26, 2012 in forum: XJ Technical Chat
  28. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    hahahaha. well maybe if I run into a 650 I will have plenty of mods to do. or at least the 650 guys will have some food for thought.
    Post by: mercuno, Jan 26, 2012 in forum: XJ Technical Chat
  29. mercuno
    Thread

    estimated power gains from 818 bigbore on feebay????

    81 xj750. How would I calculate the power curve on this without dyno. Just trying to decide whether or not to get it....
    Thread by: mercuno, Jan 25, 2012, 4 replies, in forum: XJ Technical Chat
  30. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I think the only thing even remotely compatible to make the 750 stronger would be 650 2mm oversize pistons with a piston deck height gain of .5mm...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  31. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    The Seca's bore and stroke of 67.0 x 60.5mm give an actual displacement of 853cc. (The 750 measures 65.0 x 56.6mm for a displacement of 748cc, and...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  32. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    so with that article you can put in 750 pistons into a 650 losing compression and 750 rods into a 650 gaining compression then a 750 head to lose...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  33. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    The dchc, two-valves-per-cylinder, plain-bearing engine is derived from the XJ650 Maxim powerplant introduced in 1980. The Seca 750 displaces...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  34. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    OK ...I learned how to calculate CC's tonight. YAY! So what I have found so far is that both the 650/750 have same size pistons and stroke...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  35. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    OK does anyone know where I can find the specs and interchangeability of the crank rods and pistons for the 750 900 and 1100? From what I have...
    Post by: mercuno, Jan 25, 2012 in forum: XJ Technical Chat
  36. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Any word on how often some good pistons show up??? I saw some on ebay that were 818cc but would that extra 2cc really make a huge diff other than...
    Post by: mercuno, Jan 24, 2012 in forum: XJ Technical Chat
  37. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I believe in cheap horsepower. these things are toys and I like to tinker. I would like to ride it though and if there are no easy outs then it...
    Post by: mercuno, Jan 24, 2012 in forum: XJ Technical Chat
  38. mercuno
    Thread

    Mississippi (Gulfport)

    81 seca 750. cant wait for cruisin the coast. When is the big bike show in Alabama? Nice to be here
    Thread by: mercuno, Jan 24, 2012, 0 replies, in forum: Other
  39. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    well I started to soften my hard head today. I figure I will get plenty of kicks for an 800 dollar or less bike. Im gonna make it pretty and ride...
    Post by: mercuno, Jan 24, 2012 in forum: XJ Technical Chat
  40. mercuno
    Post

    WTB starter 1981 xj750

    just got one thanks for all the replies. looks like i jumped on a bike that is getting pretty rare.
    Post by: mercuno, Jan 24, 2012 in forum: For Sale, Trade/Swap, Wanted
  41. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Well I hear stories of the revered yoshi pistons but did not know they were cast. I dont see why cast wont work but it just seems scary to me....
    Post by: mercuno, Jan 24, 2012 in forum: XJ Technical Chat
  42. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    yeah I was lookin at that but geez. I think I will just keep y 650 bux. I am pretty darn thrifty though. I know now the sr185 has the same size...
    Post by: mercuno, Jan 23, 2012 in forum: XJ Technical Chat
  43. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Wow. cant find a set of big bore pistons anywhere....Might buy one piston off of feebay just so I can mic it out and see if there is something out...
    Post by: mercuno, Jan 23, 2012 in forum: XJ Technical Chat
  44. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    awesome. just a plain ole good idea. that will even help with setting idle
    Post by: mercuno, Jan 22, 2012 in forum: XJ Technical Chat
  45. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    problem is I dont have a tach and I am using the simplified wiring harness. I wonder how much of a factor that would be in a dyno run and is there...
    Post by: mercuno, Jan 22, 2012 in forum: XJ Technical Chat
  46. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I have a dyno shop very local to me here on the coast. I plan on getting her running and safe and legal over the week and then talking to him...
    Post by: mercuno, Jan 22, 2012 in forum: XJ Technical Chat
  47. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I 100% agree. where is the data from the guy who put a turbo on a non turbo seca? or the guy who has done a piston swap? or the port and polish...
    Post by: mercuno, Jan 22, 2012 in forum: XJ Technical Chat
  48. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    Re: Horsepower mods ? Cant find a tell all thread for the 75 I asked the seller a question and those pistons are made in taiwan and are cast......
    Post by: mercuno, Jan 22, 2012 in forum: XJ Technical Chat
  49. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I heard you can get pistons from the xj900rk? but no idea what that will resize it to? cant find em though
    Post by: mercuno, Jan 21, 2012 in forum: XJ Technical Chat
  50. mercuno
    Post

    Horsepower mods ? Cant find a tell all thread for the 750

    I would pay a hundred bucks. that is why I figured about 300 for the pistons bore and chamfer for the ring run in. and maybe a decking of the head...
    Post by: mercuno, Jan 21, 2012 in forum: XJ Technical Chat
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