Vintage Dirt Bike Q & A

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 Post subject: MT upgrade
PostPosted: Thu Jun 23, 2016 4:10 am 
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Joined: Wed Jun 22, 2016 2:59 am
Posts: 3
8) Hey guys and girls. Dave here from Australia. I'm in the process of restoring a 12/74 MT 250. It has most of its original parts in good condition. What I would like to do is remove the oil resivour and pump. I have heard it can be done safely. I'm wondering if it affects any other operation of the bike. Other than having to use premixed fuel. Also I am thinking of converting it from a 6 volt to 12 volt electrical system. Does any one have any information, or advice in this regard? Any help would be appreciated.
Kind regards Dave.


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 Post subject: Re: MT upgrade
PostPosted: Thu Jun 23, 2016 3:04 pm 
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Joined: Sun Nov 30, 2008 12:10 pm
Posts: 1010
Location: Connecticut, USA
The MT250 injection system basically just sprays oil into the intake manifold, so there's no problem running premix provided the manifold hole is sealed off. I agree about removing the pump too, as without lubrication it will surely self-destruct eventually.

Ray

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'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


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 Post subject: Re: MT upgrade
PostPosted: Fri Jun 24, 2016 3:13 am 
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Joined: Wed Jun 22, 2016 2:59 am
Posts: 3
Thanks Ray
I'm going to have a look at it this week end.


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 Post subject: Re: MT upgrade
PostPosted: Sat Jun 25, 2016 1:32 am 
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Joined: Wed Jun 22, 2016 2:59 am
Posts: 3
:?: Does anyone have any thoughts on 12 volt conversions? Also I'm ready to start painting parts. Wanting to paint it myself to save money any tips?


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 Post subject: Re: MT upgrade
PostPosted: Sun Jun 26, 2016 6:55 pm 
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Joined: Sun Nov 30, 2008 12:10 pm
Posts: 1010
Location: Connecticut, USA
I've never done it myself, but it should be possible to connect the 6V lighting coil and 6V charging coil together in series, ending up with a higher (possibly much higher) single voltage with the current capacity of the charging-coil winding. You may have to experiment with different connection polarities to get a voltage close to what you want.

You could try calling CycleColor and Marbles Motors to see what they have in the way of Honda Elsinore paints. There used to be a place that sold aerosol cans of the CR silver and green paints, and of course there's always the Preval sprayers if you can find the paint you want in pints/quarts etc. If you're not concerned with getting a finish like OEM, I've gotten some very good results using DupliColor auto paint.

Ray

_________________
'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


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