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gortnipper

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I think you are better off buying these new. The carb slides in particular wear and cause poor running. You want new anodized slides. New springs would be good.
 

Fast Eddie

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+1 on the above. Slides, needles and needle jets wear and cause running issues. No point in starting out on day one chasing carb gremlins !

Burlen do rebuild kits that contain the gaskets and o rings you’ll need too.

If you haven’t done so already, you should read up on how to clean out the pilot jet bushing properly (there’s approx 8 million threads on here about it), blowing air through it does / means NOTHING ...
 
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All great advice and will heed.

Looks like there are different sized slides. I have 932 / 33 & 34; anyone know what sized slides I need? 2, 2.5, 3, 3.5?

Thanks!
 
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Mr Bacon lists all 850's as built with 3 1/2 slides, though whether local circumstances apply? The carb numbers you quote are from Mk2a (option?).. so would have been with balanced exhaust, bean cans and plastic filter I believe.
 
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+1 on the above. Slides, needles and needle jets wear and cause running issues. No point in starting out on day one chasing carb gremlins !

Burlen do rebuild kits that contain the gaskets and o rings you’ll need too.
Does it help to fit anodized slides in worn carb bodies? Or do rebuild kits come with o/size slides, allowing for carb bodies to be machined to o/size as well? I must confess not having spent much consideration on the s/h carbs to be fitted to my bike.

-Knut
 
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Start adding up what you are going to spend rehabing worn carbs vs buying new especially if considering resleeving worn bodies. At some point it no longer makes sense. The new Premiers have a lot of nice features, anodized slides, stay up floats, removable pilot jet.
 

gortnipper

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New premiers come with 3.5 slides.

However, I do agree with Knut, which is why I put my old Amals in the spares bin and got new Premiers.

No regrets.
 

Fast Eddie

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Does it help to fit anodized slides in worn carb bodies? Or do rebuild kits come with o/size slides, allowing for carb bodies to be machined to o/size as well? I must confess not having spent much consideration on the s/h carbs to be fitted to my bike.

-Knut
New slides are just new slides, not oversized, so you’re only repairing half of the wear. So it’s certainly no way of rehabilitating properly worn carbs (and if I did buy new slides, I’d buy heavy chromed brass ones personally).

Hence, as has been said already, I’m one of those that thinks that by the time you have bought second hand carbs, and then paid to rebuild them, you might as well just buy new ones, and make ‘em Premiers to solve the pilot jet issues whilst you’re at it.

But that’s not the direction Norcoastal has chosen to take.
 
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That’s correct Eddie and I appreciate all of the advice.

I’ll see how they run when I get the motor done. That probably won’t be for a while.

Here’s a question. I now have the rear brake complete and it works. If you look at this picture, the cable doesn’t seem to sit well in the mount on the frame. Is that normal? I assume that when it’s a running bike and the brake is adjusted properly it will settle in, Is that right?


find atm around me
 
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Doesn't look quite right where the cable housing goes into the lug on the swingarm. Should be much more in line with the 06.0796 threaded brake yoke. Please excuse the lack of polish in the following photo. A finely calibrated piece of cord says the cable housing is 13" long between mounting lugs. More photos and measurements on request.
-edit- Housing is closer to 12-1/2". The nipples on the ends of the ferrules that go into the lugs on the swingarm and pedal plate are 1/4" dia by 1/4" in length.
 
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Doesn't look quite right where the cable housing goes into the lug on the swingarm. Should be much more in line with the 06.0796 threaded brake yoke. Please excuse the lack of polish in the following photo. A finely calibrated piece of cord says the cable housing is 13" long between mounting lugs. More photos and measurements on request.
-edit- Housing is closer to 12-1/2". The nipples on the ends of the ferrules that go into the lugs on the swingarm and pedal plate are 1/4" dia by 1/4" in length.
I’ll measure my cable. Mine appears to be longer than yours. If you get a chance and whenever it’s convenient, could you take a picture from behind the bracket so I can see the cable?

Thanks for the notes
 
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About like this. Reminder that there is a 2-1 exhaust on the other side and the pillion pegs have since been deleted. The extra brackets are just there for the Craven mounts.
 

gortnipper

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This is what my
Don Pender Dunstall repops looked like.

20190613_223806 (2).jpg


About like this. Reminder that there is a 2-1 exhaust on the other side and the pillion pegs have since been deleted. The extra brackets are just there for the Craven mounts.
If there is any adjustment in the Craven mounts, and the lower hole in the bracket can be moved to the top forward hole, you could use two of smaller footrest support brackets, which would really tidy things up nicely. It is what I did with my pannier mounts since I have a 2-1 as well.

 
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I have a feeling the cable just needs to break in a little. Its not even adjusted properly yet. Maybe when the cable is tight it will fit better.

Thanks for the pictures!
 

Richard Tool

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Hi Steve - you need to make a bracket to act as a fairlead so the back end of the outer cable enters the fitting on the swingarm squarely. Waiting for it to break in is a recipe for the inner cable to fail as it will chafe on the end of the outer cable where it is forced to make a hard bend. As others have noted you need the exhaust mounting plates to properly plan this .
 

olympus

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I'll take a photo of my set up in the morning... looking at the above two photos the swinging arm is sitting significantly higher than mine, in fact the outer cable stop on the swing arm is almost level with the lower metalastic mounting hole.
I'm due to replace the rear shocks shortly and the ones in the basket case are currently fitted ;;; so i don't know if the length of them is correct
I have also carried out the additional washer installation behind the two 3/8 bolts so the cable is clear to run up parallel with the swing arm
 

grandpaul

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When I used to send my old monoblocs to Lunds, they bores the carb bodies and installed very thin sleeves on the slides. both surfaces new and compatible.
 

Fast Eddie

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When I used to send my old monoblocs to Lunds, they bores the carb bodies and installed very thin sleeves on the slides. both surfaces new and compatible.
Yup, folk do the same with Concentrics. I’m just not sure why when you can buy brand new Premiers with their other benefits already included !
 

grandpaul

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Yup, folk do the same with Concentrics. I’m just not sure why when you can buy brand new Premiers with their other benefits already included !
Because maintaining originality is a prime consideration for many people, EVER IF NOBODY WILL EVER NOTICE!

There are names and euphemisms for personality types that relate to certain Norton owners who manifest these considerations...
 
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