Topic: new here....

[chopper dan]

i have a 1973 750-4 chopper all original from how it was built in 1978. although i have been having alot of coil/cutting out problems with it this summer, it was running ok. i have been frustrated with trying to get it running right for the past two months. i am about ready to sell it but i really dig it and would like to get it running good, even if its for next spring as the summer here is coming to an end. anyways i think this winter i will do a complete update on it. repaint it etc.. was looking at some of the bike here that have the newer two carb system instead of the old four carbs. i don't need the make a hot rod out of it but i really dig the look of the updated engine with the two out cards. you guys that have done this, how much is involved in an update mod like this and what all did you change? carbs, ignition? what. and did you guys do the work yourself...what kind of cash am i looking at to buy the parts i need and what kind of cash if somelace takes the bike and dose most of it for me? i live in central ohio and was wondering if there was a place that specializes in doing this to old 750-4s. also what about the 836 kits i read about? i assume the jugs must be bored out? i would rather spend some cash to update this ride then get a modern type chopper, as i love the look of this one and many others on this site. the modern choppas just don't seem to have the character and style of these old schools.   thanks

[Gordon]

If I were you I'd figure out what's wrong with it and fix it before doing any of the mods you're thinking of.  There's no guarantee that the parts you change out will fix the problem, and you could end up with a bike you've spent hundreds or thousands more dollars on than you already have it it that still doesn't run right. 

[chopper dan]

i will get it running right but i am still interested in doing the updates.

[srook]

Hi,
Check out Cycle Exchange for the 2 carb set-up http://www.cyclexchange.net/

They also carry the 836 kits and sell cylinders already bored.  You might want to check out Honda Chopper as well for info on CB750 choppers.  http://www.hondachopper.com/

Scott

[KRONUS0100]

good lookin ride there.  welcome to the forum.

[madmtnmotors]

Definitely less frustrating to figure out what's wrong first before adding a bunch of new variables to the equation. Thoroughly inspect/gap/adjust points and make sure the coils and wires are good. The satisfaction of making a poorly running bike run well is great and taking a bike that runs well and making it run even better is greater. Welcome to the forum, and nice looking ride there. I've got one that I'm thinking of chopping as well.

[Cqyqte]

i have a 1973 750-4 chopper all original from how it was built in 1978. although i have been having alot of coil/cutting out problems with it this summer, it was running ok. i have been frustrated with trying to get it running right for the past two months. i am about ready to sell it but i really dig it and would like to get it running good, even if its for next spring as the summer here is coming to an end. anyways i think this winter i will do a complete update on it. repaint it etc.. was looking at some of the bike here that have the newer two carb system instead of the old four carbs. i don't need the make a hot rod out of it but i really dig the look of the updated engine with the two out cards. you guys that have done this, how much is involved in an update mod like this and what all did you change? carbs, ignition? what. and did you guys do the work yourself...what kind of cash am i looking at to buy the parts i need and what kind of cash if somelace takes the bike and dose most of it for me? i live in central ohio and was wondering if there was a place that specializes in doing this to old 750-4s. also what about the 836 kits i read about? i assume the jugs must be bored out? i would rather spend some cash to update this ride then get a modern type chopper, as i love the look of this one and many others on this site. the modern choppas just don't seem to have the character and style of these old schools.   thanks

Love the chop, having gone the route already I would recommend Cycle X for the systems and if you have the money, a rebuild of the motor.  The twin carb setup requires a solid base motor and an updated electronic ignition.  I know of no other specialist on 750sohc motors, if you are looking for more CC's and attention to detail.  I went for his Streetfighter motor rebuild and spent $4000, and never been sorry.  He's a wealth of knowledge and takes pride in his work and products.

The only thing is you've got to be sure that a high-performance motor suits the style of bike.  When I set the ignition for full advance, it gets real scary real fast, and with a hardtail bobber with a springer seat my ass has more airtime than I like.  I think the Streetfighter motor is best matched to a cafe racer with todays' technology in brakes, shocks and tires.  I had the balls once to let this thing go and I shut it down when I hit 112 mph.  There was still plenty of room on the throttle, but zero left in the courage account.  Fortunately the road surface was smooth, cause a small ripple in the asphlat would've sent my ass in orbit.

[wookie]

i have a 1973 750-4 chopper all original from how it was built in 1978. although i have been having alot of coil/cutting out problems with it this summer, it was running ok. i have been frustrated with trying to get it running right for the past two months. i am about ready to sell it but i really dig it and would like to get it running good, even if its for next spring as the summer here is coming to an end. anyways i think this winter i will do a complete update on it. repaint it etc.. was looking at some of the bike here that have the newer two carb system instead of the old four carbs. i don't need the make a hot rod out of it but i really dig the look of the updated engine with the two out cards. you guys that have done this, how much is involved in an update mod like this and what all did you change? carbs, ignition? what. and did you guys do the work yourself...what kind of cash am i looking at to buy the parts i need and what kind of cash if somelace takes the bike and dose most of it for me? i live in central ohio and was wondering if there was a place that specializes in doing this to old 750-4s. also what about the 836 kits i read about? i assume the jugs must be bored out? i would rather spend some cash to update this ride then get a modern type chopper, as i love the look of this one and many others on this site. the modern choppas just don't seem to have the character and style of these old schools.   thanks

Love the chop, having gone the route already I would recommend Cycle X for the systems and if you have the money, a rebuild of the motor.  The twin carb setup requires a solid base motor and an updated electronic ignition.  I know of no other specialist on 750sohc motors, if you are looking for more CC's and attention to detail.  I went for his Streetfighter motor rebuild and spent $4000, and never been sorry.  He's a wealth of knowledge and takes pride in his work and products.

The only thing is you've got to be sure that a high-performance motor suits the style of bike.  When I set the ignition for full advance, it gets real scary real fast, and with a hardtail bobber with a springer seat my ass has more airtime than I like.  I think the Streetfighter motor is best matched to a cafe racer with todays' technology in brakes, shocks and tires.  I had the balls once to let this thing go and I shut it down when I hit 112 mph.  There was still plenty of room on the throttle, but zero left in the courage account.  Fortunately the road surface was smooth, cause a small ripple in the asphlat would've sent my ass in orbit.

Had i not wanted to go 'ton up' on a regular basis i would have built something very similar.
That is a gorgeous bike.

JJ

[Cqyqte]

Thanks, I have the provision to add a second springer pussy-pad that actually connects to the rear shock points of my seat and then connects to the rear fender strut bolt with similar rockshocks off them.  Looks like ass but the wife can ride two up with me.  Never done it but the seat was designed and built with that purpose in mind. 

[754]

I fail to see why you will need an updated ignition to run the 2 carb setup...

[Retro Rocket]

I know of no other specialist on 750sohc motors,

 Mark at M3 and Big Jay at CBR zone are the expert engine builders on this forum, they both have supplied the BEST quality parts for our engines available, i will also mention Mike Reick as well as his knowledge and skills are second to none.....Cyclex, while good are no where as good as the builders mentioned and his engine parts are adequate but the parts i have from Jay ,Mike and Mark are the best available bar none.....

Mick