Motobi 2C Elletronica
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Thread: Motobi 2C Elletronica

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    Senior Member dobbinuk's Avatar
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    Lee Hardy
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    Motobi 2C Elletronica

    I bought this baby today. Not entirely sure why. She sounds lovely and runs as sweet as a nut. It has a few rough edges but I'll enjoy sorting it out. It came with the original 1976 Italian registration document and a box of bits, including a spare clutch, pistons/bearings and other mechanical looking stuff that I wouldn't know what to do with.

    http://tinyurl.com/5srw7wn

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    Senior Member R Powell's Avatar
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    I had 2 Benelli 250 2c in the past great bikes if yours has alloy barrells and 25mm carbs it should fly . We seem to have great weather for biking at the moment enjoy some 2 stroke acceleration beats a 4 stroke any day.

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    Senior Member dobbinuk's Avatar
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    The carbs are VHB25B Dellortos. Not sure about the barrels. I might cafe racer it, like the 2C advertised on here a while back, but before I do that I just want to ride her in her as is. She's not registered in this country yet though.

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    Senior Member dobbinuk's Avatar
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    I am beginning to come to the conclusion that the tank may possibly have some internal rust...


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    Whats a little rust in a thirty odd year old tank

    Nice looking bike, I like the 250 too but they are getting up in price here. Like this one:

    http://www.bikesales.com.au/all-bikes/private/details.aspx?Cr=0&R=10482084&keywords=&trecs=1&__N s=p_IsPoa_Int32|0||p_RankSort_Int32|1||p_HasPhotos _Int32|1||p_Make_String|0||p_Model_String|0||p_Yea rMade_Int32|1||p_PriceSort_Decimal|1||p_PhotoCount _Int32|1&__sid=1200A9933FC6&__Nne=15&__Qpb=true&se ot=1&__N=1432 604 1430 1429 1626 1428 4294966708 4294955561&silo=1400
    76 Benelli Sei, 76 Guzzi Lemans, 79 Guzzi Lemans, 79 Kawasaki z650, 98 BMW F650, 08 Suzuki DL650

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    Senior Member dobbinuk's Avatar
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    Lee Hardy
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    Quote Originally Posted by Doc59 View Post
    Whats a little rust in a thirty odd year old tank

    Nice looking bike, I like the 250 too but they are getting up in price here. Like this one:

    http://www.bikesales.com.au/all-bikes/private/details.aspx?Cr=0&R=10482084&keywords=&trecs=1&__N s=p_IsPoa_Int32|0||p_RankSort_Int32|1||p_HasPhotos _Int32|1||p_Make_String|0||p_Model_String|0||p_Yea rMade_Int32|1||p_PriceSort_Decimal|1||p_PhotoCount _Int32|1&__sid=1200A9933FC6&__Nne=15&__Qpb=true&se ot=1&__N=1432 604 1430 1429 1626 1428 4294966708 4294955561&silo=1400
    Cheers Doc. I suspected when the left hand fuel tap was letting very little fuel through. Next step is either to source some of that Metal Rescue stuff or I might try electrolysis.

    I chuckled when I read that ad above. $6500 and it still needs lighting work!

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    Senior Member tucandugu's Avatar
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    It looks like new!. Congratulations. Very nice.

    Carles

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    Senior Member dobbinuk's Avatar
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    It's alive!!

    Tank derusted and sealed. Ignition barrel wired in correctly (some numpty had wired incorrectly causing smoking electrics). Started for the first time today

    Now need to understand why fuel isn't coming through too well and sort out clutch plates, which appear to be stuck.

    Short vid:

  10. #9
    Senior Member tucandugu's Avatar
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    Congratulations Dobbi! It sounds perfect. No internal engine noise sounds like new.
    You went faster than me, I still don´t start my Sei...

    Carles

  11. #10
    Village Idiot Jedzo's Avatar
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    Dobb, I had a similar sounding fuel flow issue with my old 750 Laverda with a fuel tank in a similar state. Part of it was the petcocks all gunked to hell. I dismantled them and puit them through the ultrasonic cleaner and they came up okay and I put some new washers in them but I still think they're suss so in the end I replaced them with some new ones. They weren't exactly the same as the old original ones which I've stored away.

    Detlef Burian's got them for pennies if you wanted to.

    Also, if the tank's like that and the petcock's are like that you can bet the carb's are like that too. That's was another big part of my fueling problem. Have you had them off for a cleanout? You still should be able to get gasket kits for VHB's, I got them okay for the 29's on the Laverda and the Tornado. There's probably a little circular filter on the carb banjos that you could replace as well. They don't come in the carb kits so you'd have to get them seperately. Here's a good resource on how to go about regasketing VHB's. Look in the contents for the bit about Carburetor rebuild - Dellorto VHB's.

    http://www.thisoldtractor.com/gtbend...carburetor.htm

    Cheers
    Last edited by Jedzo; 09-16-2011 at 08:48 PM.

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