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Messages - Paull

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16
CB650 / Re: Cylinder Head Bolts
« on: April 08, 2014, 06:51:53 PM »
Thanks for the reassurance Chaps

Looks like I am barking up the right tree (or just barking).

I would like to know how that goes mat.

Bryan do you still have neutral switches? ( and if so, ba ba ba )

Washed the engine parts today (cases, head, barrels etc), just got to drill them out retread um and weld one up.

Then I can get the bottom end back together.

Thanks

Paul

17
CB650 / Re: Cylinder Head Bolts
« on: April 07, 2014, 09:39:07 PM »
Hi  matthewmosse,

I cant see it will make much difference.

My mate had an idea, open the 12 treaded holes up to 10mm tread put a 10mm tread on the studs then turn them down to 8mm (the bit sticking out) put an 8mm tread on the other end and they won't pull out. A lot of work but it might work.

I have stripped it down to bare bones today the top case has three helicoils, 4 snapped bolts and a chip.

I will stick it on the milling machine tomorrow then tig up the case.

All should be well, come Thursday (Bloody customer getting in the way).

Not much to do then :o :o :o :o

Why a 650 top end on a 500 bottom end is it a gearbox thing.

Paul

18
CB650 / Re: Cylinder Head Bolts
« on: April 07, 2014, 09:48:28 AM »
Hi Bryan,

Do you think studding them like a 550 will work?

Personally I don't see it will make much difference. 

All Views welcomed

Paul

19
New Member Introductions / Re: newby
« on: April 06, 2014, 01:14:38 PM »
Hi antonypo,

There gubby but anything can be clean.

Is that rust there to, if so tank might need lining.

Paul

20
CB650 / Re: Cylinder Head Bolts
« on: April 06, 2014, 12:44:45 PM »
Hi Chaps,

The poor ol girl has had a rough life.

Left in the wet, rebuilt at one time by an animal with no clue.

As an example, the oil gallery plug was put in the wrong way round and a bolt cut off and blue tacked in the hole to push it in.
They used some sort of fencing bolt to bolt the crank case together and snapped a bolt off.

I snapped 4 off getting them out, they were so tight.

I could make studs for it, I have the steel.

But just wanted to know the price of bolts and where to get them.

Thanks for any help

Paul


21
CB650 / Cylinder Head Bolts
« on: April 04, 2014, 11:56:31 AM »
Hi All,

Been sometime since I have been here, been building a new monstrosity ;) ;) ;) ;).

Where can i get a new set of cylinder head bolts for a 1979 CB650z.

 Paul

22
CB500/550 / Re: Fouling plug
« on: May 08, 2013, 10:14:50 AM »
Sorry for late reply.

Reg can brake down and over power the plugs burning the diode out.

Just make sure the correct voltage is coming out of it.

 Paull

23
CB500/550 / Re: Fouling plug
« on: May 01, 2013, 07:46:38 PM »
If this happens every time it stands still I would agree with caps and leads but add reg/rec check.

I do warn you NGK plug are not as good as they could be, 2 in 10 new plugs go in the bin.  :(

Paull

24
CB500/550 / Re: CB500 K2 Cafe build.
« on: May 01, 2013, 07:34:13 PM »
Fine job your doing there.

Keep the pictures coming.

Paull

25
New Member Introductions / Re: Hi from West Sussex
« on: December 16, 2012, 02:08:31 PM »
Hi MerlinV12

Welcome to the best CB site in the UK.

I'm in Midhurst, West Sussex.

Paull

26
CB500/550 / Re: Meaning of jet sizes
« on: November 15, 2012, 03:56:42 PM »
Thanks Steve.

27
CB500/550 / Re: Meaning of jet sizes
« on: November 10, 2012, 05:28:36 PM »
Hi Bryanj,

The pipes are none restrictive, they have been engineered too oppose sound waves against each other.
The design is simple but very effective.

I have 98 mains and it ran very will indeed.

Because I have re engineered the pipes in such a way that they scavenge a lot more gases out of the exhaust ports by creating a low pressure bridge between exhaust into the pipes and out of them , leaving a space for more fuel air mix making for bigger bang and more power.

This is the theory anyhow (I have done a mathematical model of it and it should work well).

Paull   

28
CB500/550 / Meaning of jet sizes
« on: November 10, 2012, 04:48:05 PM »
Hi All,

I what to know the sizes of the holes in the jets in mm i.e 110 = what, so I can re drill the jets i have until i hit the right number.

I have built a new exhaust system to quieten the 550/4 chop down, 2 into 1 into a common silencer box under the frame but know it runs rough. (needs more fuel).

With 4 straight throughs, it went like a scolded cat, but it was way to load.

With the new system it is whisper quiet (and before anyone says its to restricted the silencer is of a re direction type. Newton third law and all that).     

Thanks

Paull

29
CB650 / Re: Newbie
« on: September 18, 2012, 03:04:58 PM »
Sounds good to me.
25,000 mile, its not run in yet.
These 4 block hondas are good for big miles 250,000+.
Good luck with it.
Paull

30
CB650 / Re: 1980 CB650Z bobber project
« on: August 01, 2012, 04:31:08 PM »
Bigbobber,
I am doing a cb650 bobber at the moment, I will put some pictures up for you if you like.

If you are using the old frame, just remember what you cut out you have to put back (not including brackets), think before you grind. ::) ::)

These frames look like they were welded by jap kids on a handful of rice a week :), so you cant make them worse :o.

If you need any advise this is the place to be.

Paul
 

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