Any xj1100 rotors for sale?

[jehosephat101]

Would anyone happen to have an extra 1982 XJ1100 engine rotor that they could sell me???

[TopCatGr58]

I found this on Ebay, no bids, It looks like both the stator and the rotor and brushes, good price!! 4619671230
T.C.

[andreashweiss]

I have a rotor and stator for the xs1100. but not sure if they will interchange with the xj11100. Anyone know.? I am thinking no but ....andreas

[John]

The rotors are entirely diferent, and won't interchange.

[GNEPIG]

.. i have never had to remove the rotor from an XS or XJ before, is the end of the crank shaft that the rotor bolts to different? and is the bolt patteren for the covers different also?..

[John]

The XJ rotor is wound with wires, and the XS rotor is just a hunk of steel. That is the difference. The bolt patterens are the same on both engines. The end of the crankshaft is the same, tapered, on both engines. The XJ rotor will not work in an XS system, or vice versa.

[GNEPIG]

.. will the XS rotor and stator/cover together work on the XJ?

[John]

They may. I think the voltage regulator is the same between the two bikes. If not, just swap them out. The connectors may be the same. Everything will bolt right up. I ran an XJ engine in my bike for years, but I swapped all of the XS's parts onto the XJ engine.

[GNEPIG]

.. sounds like the best (and cheapest)fix for a guy looking for a not so popular rotor
. i wonder what Andreas would charge for the set?

[andreashweiss]

right engine stator cover,altinater,bolt,and heavy piece of metal. everything including allen bolts $35.00 shipping included. andreas

[jehosephat101]

I've been trying for the last two months to get other rotors to fit my xj, and finally found an xj650 rotor that had the same diameter as my broken xj1100 rotor. I had to have it milled to fit on the crank, because the rotor didnt slide back far enough on the crank. It runs with the 650 rotor, but it doesn't have enough juice to charge the battery. whith the xs11 rotors, they too didn't slide back far enough on the crank to work. would it be possible to mill an xs1100 rotor, and get the rest of the stator and charging system to fit the xj1100? I would love to do that also for the heavier rotor and more tork!!!

[John]

You will have to swap every thing over to XS parts, but with the extra electrics on an XJ, the charging may be marginal. You might want to upgrade to Geezer's new voltage regulator if you do use XS parts.

[trbig]

OK... I don't exactly know what I have now. I know I have the XJ side cover that says "YICS" under the Yamaha. I also know that the numbers on my motor indicate that I have a '78 XS motor. I also know that I have the big chunk of metal for a rotor, as I just took this off and replaced the seal, but I couldn't tell you the difference in the stator or alternator to tell you what is under the cap. I do know that I have had no charging problems on my XJ with this alternator except for the fact that when I pull up to a stop, at idle, my headlight does dim ever so slightly.

Tod

[GNEPIG]

.. Heeeyy, Tod has given us another clue. now who wants to look up the part numbers for the different years of cranks to see if they are all the same? the early YICS motors have the XS style alternaters

[TopCatGr58]

Getting Juiced over Cranks!

Hey GNEPIG,

I thought I had done this research before, but here it is again:

78E=2H7-11411-02-00 CRANKSHAFT (2H7-11411-01)

82XJ= 2H7-11411-02-00 CRANKSHAFT

The cranks are the same for ALL of them!! So....if you get all of the parts for an XS11 alternator, it'll fit on the XJ crankshaft, the engine cases are the same, it's just the outer ALT cover housing that's different!
T.C.