crank case problems for

[agrikias]

hi .i have a 2kf motor and a 3aj .does everyone know if i can fit the righ case of the 2kf and the left of the 3aj case with the 3aj crank shaft and electrics together???????i would like to have the numbers of the 2kf with the kick starter ,and the e start of the 3aj ,i also keep the oil pump of the 3aj ,i have all the electric parts and the wiring diagram of the 3aj . i am crazy ?i need a psichological help or it will be ok ?sory for my bad english ,thangs for your help

[motorang]

Hi,
the engine case halves are paired, there is only a very slight chance the engine will run sweet, even if (which I do not know) the halves WOULD technically fit.
The halves are put together for machining, for a very good reason: you can not guarantee everything fits well if you bore them separately.

I would sell the 2KF block and look for a 1VJ or 3AJ block to replace it really.

Andy

[agrikias]

th broblem is that i dont have any more the invoice bill of the 3aj motor and i would have problems with the marketing athorization .or alse i whould have kept the 3aj motor whith the shaft ,and the gear and the kick starter of the 2kf .

[jibber]

I'm pretty sure I read a post from actionman that you can not retro fit electric start to kick start, only kick start to electric.

[jibber]

http://www.tenere.co.uk/forum/viewtopic ... art#p11902

That said, reading it again, if you are willing to take a chance on the case halves being unmatched, it sounds like you have all the components to carry it out, BUT, I thought the earlier motors (kick only) were narrower in the frame mount (rear) so you want to check that it would still fit.

heres another connected thread
http://www.tenere.co.uk/forum/viewtopic ... art#p23876

[ActionManMelb]

There are so many traps involved in these kind of projects.
We have no answer to your question because no one has ever attempted it before.

The main issue is 'wide case' versus 'narrow case'. Early engines, non-electric start were narrow case. The main identifier of the change was the output sprocket.
The splines changes from coarse to fine, and the shafts in the transmission were lengthened and the alternator changed, along with many other small dteails.

What you are proposing is to put a narrow right case with a wide left case. Can it be done? I don't know, but I am sure some grief awaits you.

I would be trying to get the 3AJ engine number made legitimate. Can you contact the registration authority for some kind of history for the bike.
Maybe sign a declaration that you are the owner?

[xtrider]

IF the 2 case halves were machined close enough to work with each other. IIRC the e start tranny will work with the kicker right case , the extra length is in the left side so as long as all internals from the e-start are used it very well may work . But ........ I'm getting old and senile , so there's that issue.
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