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  1. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    @XJ550H this bike wasnt/isnt being built to pursue the fastest run. Its bracket racing, consistency over speed. My goal as originally stated is...
    Post by: Thomas Agar, Aug 10, 2020 in forum: XJ Technical Chat
  2. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    Let me correct my information as I was looking at the 900 camshafts on ebay noticed this. The 750 head has 3 camshaft journals per camshaft not 4...
    Post by: Thomas Agar, Aug 3, 2020 in forum: XJ Technical Chat
  3. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    Alright gents, i have to set a deadline just to keep stuff pushing for the bike. If no one comes forward with the answers the the original...
    Post by: Thomas Agar, Aug 2, 2020 in forum: XJ Technical Chat
  4. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    Yea that's why I don't have much faith in finding a 891 here. I'm sure it can be done, but a bit rare I'm sure
    Post by: Thomas Agar, Aug 2, 2020 in forum: XJ Technical Chat
  5. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    Xj550 I love going back and forth with you but can we keep posts related to the questions asked please. I started a new thread so the information...
    Post by: Thomas Agar, Aug 2, 2020 in forum: XJ Technical Chat
  6. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    Just try to keep in mind that this is a drag race engine guys, even if the xj's werent really drag/supersport bikes
    Post by: Thomas Agar, Jul 31, 2020 in forum: XJ Technical Chat
  7. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    @xj550 Went over to the machine shop and confirmed this morning. 5g2 is on the jugs and head. Confirmed the size of the valves as well as being...
    Post by: Thomas Agar, Jul 31, 2020 in forum: XJ Technical Chat
  8. Thomas Agar
    Post

    Xj750 to 900 parts fitment information?

    I did use your link and posted my findings in the drag thread yesterday i believe. Why an actual 900 when i already have the displacement of a...
    Post by: Thomas Agar, Jul 31, 2020 in forum: XJ Technical Chat
  9. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    If you read my message second to last, it says the code reads a 81 750 seca. I did use your link :)
    Post by: Thomas Agar, Jul 31, 2020 in forum: XJ Technical Chat
  10. Thomas Agar
    Thread

    Xj750 to 900 parts fitment information?

    So I figured id make a new thread instead of cluttering up the drag bike. So can you make a 750 a 900? The engine is already torn apart so i...
    Thread by: Thomas Agar, Jul 31, 2020, 28 replies, in forum: XJ Technical Chat
  11. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Forget everything i said in this. I must have read the gauge wrong. I miked the base circle and then measured the lift. Looks like the intake life...
    Post by: Thomas Agar, Jul 31, 2020 in forum: XJ Technical Chat
  12. Thomas Agar
    Post

    Seattle people?

    Thanks dude, yea she's an interesting one. It's kind of fun decoding the whole thing. Wish there was more info on parts identification, but hey, I...
    Post by: Thomas Agar, Jul 31, 2020 in forum: Western US and Canada
  13. Thomas Agar
    Post

    Seattle people?

    May be a bit of an old thread. I have a 81 Xj750 drag bike, but no street cruiser besides my buell. Im down in the Auburn area Thomas
    Post by: Thomas Agar, Jul 31, 2020 in forum: Western US and Canada
  14. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    What ive found out so far The engine code reads as a 81 750. First could digits is 5G2 which points to the 5G200 of the 750 Bore & Stroke of a...
    Post by: Thomas Agar, Jul 30, 2020 in forum: XJ Technical Chat
  15. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    I'll have to do that, seems like I'll need to get a new transmission anyways as the spare is for a 750 and I read that the 900 trans is stronger....
    Post by: Thomas Agar, Jul 30, 2020 in forum: XJ Technical Chat
  16. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    @Minimulty, let me apologise. I need to take any information I get from what's seen and verify it, because at this point nothing has been what...
    Post by: Thomas Agar, Jul 30, 2020 in forum: XJ Technical Chat
  17. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Update Combustion Chamber is 24cc, does anyone know what stock is? Ill be calculating the dome of the piston within the week if i have time and...
    Post by: Thomas Agar, Jul 23, 2020 in forum: XJ Technical Chat
  18. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    No sir, thats the way they go. They are shaped so they cant go the other way. The engine is a 750 :) Thomas
    Post by: Thomas Agar, Jul 23, 2020 in forum: XJ Technical Chat
  19. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    So im going to assume that this is a high compression engine due to the piston having a lot more dome than i have yet to see in a photo of another...
    Post by: Thomas Agar, Jul 23, 2020 in forum: XJ Technical Chat
  20. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Here is a close up of one of the pistons, definitely yamaha as it says it inside the piston [IMG] [IMG] [IMG] [IMG] [IMG] [IMG] [IMG] [IMG] [IMG]
    Post by: Thomas Agar, Jul 23, 2020 in forum: XJ Technical Chat
  21. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Alright, so here is an update. I decided to break her down a bit. Here was the problem with second gear. [IMG] [IMG] I have a new transmission...
    Post by: Thomas Agar, Jul 23, 2020 in forum: XJ Technical Chat
  22. Thomas Agar
    Post

    1981 XJ750 Drag Bike Potential Exhaust Fitment Question (Bike is built already, not a daydream)

    @Minimutly the collector of a 4 into 1 is pretty tall under the bike, thats what it had. At full throttle pretty much all the time, im not too...
    Post by: Thomas Agar, Apr 24, 2020 in forum: XJ Technical Chat
  23. Thomas Agar
    Thread

    1981 XJ750 Drag Bike Potential Exhaust Fitment Question (Bike is built already, not a daydream)

    Image Below Alright gents, i wouldnt normally ask something as simple as a fitment question, but as this bike is very different than your...
    Thread by: Thomas Agar, Apr 22, 2020, 5 replies, in forum: XJ Technical Chat
  24. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Can't seem to find a number on the cam. I measured .480 lift on the exhaust, having a hard time to get my magnet based dial indicator to stay...
    Post by: Thomas Agar, Jun 27, 2018 in forum: XJ Technical Chat
  25. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Haha maybe. Dropping the clutch with a wheelie bar is quite the ride
    Post by: Thomas Agar, Jun 26, 2018 in forum: XJ Technical Chat
  26. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    Interesting. Thanks for your input. The guy raced it in heavy into the 2000s. Last sticker was a 2013. The gentleman couldn't hang on anymore...
    Post by: Thomas Agar, Jun 26, 2018 in forum: XJ Technical Chat
  27. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    I know what she runs on, it currently has 119 octane in it. He was running 116 in it but 119 was available for me. She ran in the ET motorcycle...
    Post by: Thomas Agar, Jun 25, 2018 in forum: XJ Technical Chat
  28. Thomas Agar
    Post

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    I forgot to mention, I bought this motorcycle and trailer for 500$ :p it's not pretty, it looks better now, but of course like I said, back up...
    Post by: Thomas Agar, Jun 25, 2018 in forum: XJ Technical Chat
  29. Thomas Agar
    Thread

    1981 XJ750 Seca Drag Bike Looking For Information & Opinions

    So I acquired this 81 Seca a coupple weeks ago as a back up for my Buell 1125r. Its quite modified compared to anything Ive read about on here so...
    Thread by: Thomas Agar, Jun 24, 2018, 29 replies, in forum: XJ Technical Chat
Showing results 1 to 29 of 29
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