Topic: how to save a cb750 from the garbage dump

[JohnK6]

what exhaust is on there??  It sound wicked.......

an old gsx-r 750 pipe 1988 ore so

[JohnK6]

And I wanted to go on a holliday with a few friends, so i mounted my suitcases on the "new one"





I bought those very cheap from a friend

and than she looked like this

[JohnK6]

Last week i had a problem with my frontwheel , whenever i turned in a bend it started squeaking (made a lot of noise ), and so i decided that it was time for a new tire, this is a Bridgestone BT45

without frontwheel



and the new tire

[JohnK6]

this week I had a problem with the engine, whenever i wanted to speed up fast, the engine did burp burp burp en then getting speed,  meanwhile burping out the exhaust , I thought the ignitionadvancer or a spring from this was broken so i went checking



got the ignition out and indeed de ignitionadvancer didn't went smooth, needed a drop of oil



at that moment i tough wait a minute in my other bike which has a engine which needs a lot of service (the blue one, it uses more oil than fuel  ) i installed an electronic ignition, why don't i use that one

it comes with a special advancerpart, here is a part of aluminium with sticked in that two little magnets



and here you can just see one of the magnets, and the pick-up



en this is it, it works great



it runs smoother now,
uses less fuel( i don't know how thats possible, maybe one of you can explane me, i had the same on the other bike, the ignition saves me about 1 km per liter fuel)


this ignition works only with the original coils (5 ohm)

if i ever think of selling the bike i will put in the old ignition 

[JohnK6]

the garagebox were i did all of this , i had to get out, (I rented it from a friend, who's now moved to another town), just my luck  , luckily i could rent a new garagebox under my apartment and after a lot of work it looks now like this 

just a few things to do butt .....



and

[flyin_]

Nice work!! 

Thanks for all the great pics

[Loudpipe]

All this is quite impressive. I worked as a mechanic, restoring old British cars for 2 years, and can guess that all this work was probably a lot harder than the pictures show! In any case, you've done an amazing job John. Congrats.

[JohnK6]

this is the last thing i did on my bike

 I've decided to buy a second hand ..... from another friend whom got a new .......

 guess now, i just made a few pictures which are needed

the thing needs a powersource:


the red button is an off/on button  (5 amp max)

and this was also needed 

[JohnK6]

I mounted a GPS the streetpilot III



that's all I hope you liked it all to read.


John.

[dusterdude]

groovy,thanks john

[ktp1598]

Excellent!

[JohnK6]

just one picture to post i had made a dyno run, with a engine witch needed attention







after that the guy said the gasneedle one clip lower(gasneedle higher), and the fuel... 2 measures higher i went from 110 to 125 and than it runs

[JohnK6]

bump  putt the wrong dyno in here

[JohnK6]

i was talking somewhere in this thread about a 822 cc Kit, here are a few pictures of it , I'm going to use CB900 Bol'dor pistons

(the 836 cc is difficult to get here in Europe)



pistons and rings



each cylinder with it's own piston


(the boring i couldn't do , luckily i know a man who knew how to do it 

special gasket



and just a nice Pict



all this will be used in my cafe-racer project, i open a new thread for it 

[mrbreeze]

I saw this post awhile back but didn't follow it. I'm glad I reread it.Lots of great info with excellent pictures.I assumed it was put into FAQ but didn't see it there(it really should be somewhere for reference).Anyway,I put it on my favorites so I can go back & have a peek!!! Good deal John.

[cleveland]

This is with out question the best thread I have seen on this forum.  GREAT JOB!!  Thanks for sharing.

[MoTo-BunnY]

wOw. ..  .very very well done .. ..   I think you need to write your own shop/service manual! like, seriously!!! 

I really am amazed at the dedication and skills so many of the sohc4 peeps have here, shown in these forums. I am just a happy lil' sponge here, soaking up all this knowledge and giving me the motivation (and courage? lol) to tackle my own projects. 

T H A N K   Y O U  for sharing!!

[joeson]

fantastic read and the pictures are great .This is why I'm on this forum no where else is this availible

[Nate]

I gained more insight in the last 30min of reading this than i have in days with a Honda manual

[Rainmaker]

JohnK6.....like the others I am totally impressed with what you're doing here.  Your chronicles here are an inspiration for others to follow suit rather than part out that barn bike.  I had to post a High Five for you but I also noticed something that I want to make sure you correct.  On September 4th this year reply #42 you show the parts going back into your front disc brake caliper. I may be mistaken but the picture shows your brake piston in backwards. The solid side goes in first otherwise your fluid may be absorbed into the cavity of the piston and cause spongyy front brake response or possibly brake failure. Wouldn't want to lose you.  If I'm wrong or this has been corrected......great. Keep up the great work.  How do you take all those pictures without getting grease all over the camera?   Cheers,

[Rsnip988]

Ditto

RKS

[750goes]

rainmaker,

if you have done what this guy has done, then forgive him one small mistake if that is what it is....appreciate the post for what it is ............an awesome effort .................

[JohnK6]

I want to make sure you correct.  On September 4th this year reply #42 you show the parts going back into your front disc brake caliper. I may be mistaken but the picture shows your brake piston in backwards.   If I'm wrong or this has been corrected......great. Keep up the great work.  How do you take all those pictures without getting grease all over the camera?   Cheers,

It is in the rightway, it's a solid brake piston (homemade from an rvs 316-rod), when i had an original one you were right





and about the camera it's all greasy only the lens is clean 

John.

[Rsnip988]

If you dont mind my asking how did you change your fork oil, ws it difficullt, and are there any special tools needed?


RKS

[JohnK6]

If you don't mind my asking how did you change your fork oil, ws it difficullt, and are there any special tools needed?


RKS

it's an easy job,
 butt do it one fork each time !!!! so first the left one and than the right one or first right and than left


get the m6 bleeder(no-27)- bolt in the bottom at the side of the fork out, let the old oil out push the fork in and out (so most of the oil gets out.)
renew the copper ring on the M6 bolt

than take the big bolt(no-22) on the topsite of the fork off (watch out, do first one fork, and when your finished than the other one)if you do both the front will go to your frontwheel (don't know the English words for it and you say :#:&:$% or so )

fill oil in (about 155cc)

get the big bolt in (it's a little difficult with spring, use a socketwrench)

and only when the big bolt is in you can take the big bolt from the other fork out:)

and do the same on the other fork

the job is: in dutch it's easy, in english also, butt when you're dutch and you have to think in english it's getting difficult to translate