CB750 scrambler project

[SpookDog]

I had a gsxr750 that was the same, oil cooled, 2 oil caps, total bitch to diagnose

[Louis-DT-WR]

@SpookDog it's not even mentioned in the manual about not removing the left-hand pulse generator cover on the sidestand ‍️

[Louis-DT-WR]

I have no idea when I use the shrug emoji it changes it to a girl and the gender symbol

After further investigation... My cdi which was sold by a bike breaker written in white paint "cb750 1997" ... I cleaned off the paint carefully and the part number just about readable is

MASG G
571U

Which is a cbr900!!!

Whether or not that's a problem, I've got another one from another spares breaker with the correct part number for the cb750 sevenfifty

[Calum]

Keep us posted! I'm itching to hear that you've cracked this!

[Louis-DT-WR]

Same here. Should be beasty.
I knew the electrics would be the hardest part.
All lights and horn was easy.
Starter circuit was ok.
Just the ignition circuit

[SpookDog]

It WILL fire up with a new CDI, unfortunately online buying is a fukin shark feeding frenzy of a$$hol£s all caring about one thing. The amount of times I’ve been shafted on fleabay is unreal. Brought a headlight that came without the bulb holder or rubber, the bloke had the neck to tell me that I was confusing his with another listing, conveniently after his pics were down. The only reason I nodded was cause it was complete...
Another bloke changed the listing twice while I was between messaging. Once to up the price £40 then to change from 3 wire to 5wire servo! Same listing number an all...

[Louis-DT-WR]

@SpookDog I know the feeling. Many sellers have lots of similar items for sale but send the wrong ones.
The problem is I built this bike with parts from about 30 bikes... And no real way to test it will work together until I try

[Louis-DT-WR]

I've got sparks on the plugs.... Just need 1 more part before I start up....

[Louis-DT-WR]

She runs and runs beautiful!
I'll do a video when fully warmed up.
And not pouring rain.

It was screeching when I started it., Originally thought it was the starter, but when running it was awfully loud. I thought "here we go" something major.
I had a suspicion it was the generator....
Look what I found...
A tiny recess where a slightly bent fan blade was rubbing the cover.

Really easy fix and now sounds great!

[SpookDog]

Congrats bud! I thought it be painless in the end...

[Louis-DT-WR]

@SpookDog cheers , and thanks for following everyone. Some final cosmetic touches and possibly rejetting left to do
Can't believe how fast and smoothly it revs up

[Louis-DT-WR]

Have a little listen ears are bleeding

https://youtu.be/3E1flO9j7BA
link text

[Calum]

Haha! Ruthless!

[NINJA]

@Louis-DT-WR BRAP BRAP BRAP, sounds beastly dude!!!

[Louis-DT-WR]

@NINJA it is very beastly sounding if I say so I didn't know what to expect. Definitely will wear ear defenders next time

[Calum]

I know it's not the same, but my RS is too loud for prolonged use without ear plugs. My ears are literally ringing from the noise. I am a sensitive lad though.

[Louis-DT-WR]

@Calum we all like a noisy exhaust until you ride a long journey with one, then it just gets annoying

[declan]

@Louis-DT-WR ive never been a fan of loud exhausts i prefer a good quality exhaust note

[Calum]

@declan said in CB750 scrambler project:

@Louis-DT-WR ive never been a fan of loud exhausts i prefer a good quality exhaust note

Agreed. I prefer quiet engines that make power. Turbo Flutter is a must.

Now an eargasm superbike inline 4 that's a win.

But I can't stand loud Hondas that make fack all power.

[Louis-DT-WR]

@Calum like all the kids in corsas with cherry bombs all noise and can't even pull the gear with their 4 mates in the car eating maccys