How would i do this????????????????????????????

Ok, what would i have to do to put my XJ750 seca engine in my XJ650 seca frame, what wiring would i have to change ect..... XJ750 seca is a yics and 650 seca isn't. 750 has a electronic tac ect and 650 doesnt.... So any takers?????????

 

from what i can tell its basicly a direct bolt in engine, if you want a tach you could go aftermarket electric tach, or get 750 gauges



the other thing you could do is get the 650 engine in peices, and have it bored out , put the 750 parts in it and it will bolt right back in with out any issues, just carb tuneing, the tuneing may not even need to be done

 

The 650 wouldn't match-up with a 750.

The 750 and the 900 match-up.

 

what do you mean they 650 and 750 dont match up?

 

what do you mean they 650 and 750 dont match up?

 

AssassinX1 do you know where i would get an aftermarket electronic tack?

 

A couple of areas of difference to be aware of:

- shifter covers, internal case arrangement, and pedals are different between the 650 Maxim, 650RJ Seca, 750 Maxim, and 750 Seca models. Each are unique.
- the oil level sensor is different (750 Seca and '82 750 M). Basically, the "computer dash" models use a different sending unit than the regular analog dash models.
- no tach drive provision on 750 engines, so an issue when swapping
into a 1980-81 Maxim or Midnight Maxim, or a 1982 650RJ since you will also have to convert to an electric tach.
- engine upper mounting stay brackets are the same on 650 M/MM and 750 M/MM; 750 Seca are different, as are 650RJ Seca brackets
- 650 M/MM and 750 M/MM upper engine mtg. bolt is a long, thru-and-thru style. All others are short.
- front upper, lower, and rear insulators same on 650 M/MM and 750 M/MM,
750 Seca and 650RJ Seca do not use insulators and thus the engine cases are different (they do not have the large holes needed to accept the insulators) and some of the mounting hardware is thus different.

 

Dang you get em Chacal

 

thanks its a 650 seca and a 750 seca, the engine is mounted in the 650 frame but know i need an electronic tachometer and have to wire it up, any ideas?

 

The Euro models of the XJ650 ('82 and later versions) used the same gauge as the North American XJ650RJ Seca models, but they had an electric tach. It may be that later model Viragos also used the same gauge, but with an electric drive.

You need to find the proper tach, then it's just a matter of splicing into one of your coil input wires to signal the tach.

 

I am pretty sure that the coils have a reference terminal on them to signal the tach. I am in the process of putting a procycle tach on my 750. Down with the ATARI.

 

i used a set of xj700 gauges and removed the cable tack , cable, and wired in the electric tach.. you just have to use a resistor to dumb down the voltage to the tack or the coil will cut out... i used a dimmer switch , basicly i turned down the voltage untill the tach would not get a signal then turned it up slightly till it would run on the lowest setting

 

the ray wire coming off of the coil will work