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Mikunis Vs Hitachi

Discussion in 'XJ Technical Chat' started by jegbuddy, May 29, 2009.

  1. jegbuddy

    jegbuddy New Member

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    New to the forum .. sorry no pics yet!

    Mikunis Vs Hitachi

    What is the difference..? I have two XJ 750s The one that I am working on has the Hitachi’s carbs. The parts bike has Mikunis. Both set of carbs need rebuilt. I think the Mikunis has be rejetted. But I dont know. What should I do. Exchange them or not?
     
    jegbuddy, May 29, 2009
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  2. bill

    bill Active Member

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    Welcome. The carbs work basically the same but have differences in parts and setup.

    Interesting you have 2 750s one with each type are they the same models?

    Why do you think they need to be rejeted?
     
    bill, May 29, 2009
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  3. jegbuddy

    jegbuddy New Member

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    I was told that the Mikunis had been rejetted.. I hope they both dont have to be. Both of them are 81 xj750rh. The one with the Mikunis has pods on it... They did a terrible job! The other was a daily driver until the previous owner bought a Guzzi. The last bike I rode was a Suzuki 550. I cant wait to get it going. All I have left to do is rebuild the carbs and the MC. This site has helped alot!
     
    jegbuddy, May 29, 2009
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  4. bill

    bill Active Member

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    Someone might have swapped them out. If they had pods they probably had new jets. Take the daily rider and do a complete rebuild and cleaning - you won't regret it.
     
    bill, May 29, 2009
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  5. jegbuddy

    jegbuddy New Member

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    there is other differences between them.. The valve covers are diff and the part bike also has a steering damper.. It is weird!
     
    jegbuddy, May 29, 2009
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  6. dpawl31

    dpawl31 Member

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    Different years?

    I do believe the 750 ONLY came with Hitachis, but I could be wrong.

    Is one a YICS motor, and one not?
     
    dpawl31, May 29, 2009
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  7. jegbuddy

    jegbuddy New Member

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    Both are YICs… both run. They must have had different trim packages. The parts had black covers, mikunis, and a steering damper. Maybe someone just messed with it?
     
    jegbuddy, May 29, 2009
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  8. bill

    bill Active Member

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    Hmm look at the VINS and then look in our Supporting Vendor Chacal - He has a great breakdown that will tell you a lot about both your bikes..
     
    bill, May 29, 2009
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