BX Choke

sleepy0905 · Post by **sleepy0905** » Sat Oct 07, 2006 8:25 pm

Hi does anyone know if there is a manual choke conversion for a bx 1.9 either solex or weber.
The reasons being my auto choke takes far too long to come fully off and i would prefer to have a manual choke.

ellevie · Post by **ellevie** » Sat Oct 07, 2006 10:55 pm

Have a look at a thread I posted some time ago entitled "Manual Choke Conversion Kits"
http://bxclub.co.uk/forum/viewtopic.php?t=1525
The web site is now defunct but the telephone number is included and it might be worth giving it a ring.

sleepy0905 · Post by **sleepy0905** » Sun Oct 08, 2006 10:21 am

Thanks will look into that

ellevie · Post by **ellevie** » Sun Oct 08, 2006 3:43 pm

Arron, if you can't get hold of a choke kit, you may be able to rig up a make-shift semi-manual choke yourself. I experimented with this myself for a while before I installed the conversion kit in my Solex carb. The choke flap can be opened or backed off independently of the waxstat --- It's only held closed by a very light spring. The slightest finger touch is enough to open it. I tied a piece of thread to the point where the light spring connects to the short lever which turns the choke flap spindle and routed this out towards the radiator to get the correct direction of pull, and then routed it back to the cabin. This worked but the combination of the very small movement involved and the routing friction in the thread made it hard to get a positive feel for whether the choke was open or closed. Also, the friction was sometimes enough to prevent the flap closing properly when the engine cooled down. I can't help feeling that if I had persisted with this that I might have come up with a better solution. Perhaps use some light fishing line instead of thread or string and improve the route to reduce the friction. Of course this will not affect the fast idle which will still be controlled by the waxstat, but this might not be a problem for you.

I find with my manual choke that I can back it off completely within a few seconds of the engine firing --- I only use the choke then to set the idle to about 1000 rpm for a few minutes until the engine is warmed up. This is what you would be doing with the make-shift setup, except that you would be stuck with the fast idle until the waxstat comes in.

I should also mention that my choke button is really hard to pull due to the strong spring in the PowerTrain kit I used. The button is mounted on the small accessory switch panel by the drivers right knee, and the choke will pull the panel right out if I don't hold it with my other hand. I've tried various ways of reducing the force required, but in the end I have just learned to live with it. I suppose it acts as a kind of anti-theft device. I don't know if different choke kits would also suffer from this excessive force problem.

sleepy0905 · Post by **sleepy0905** » Sun Oct 08, 2006 3:54 pm

Thanks for the info i will do some investigation and see.

Stewart (oily!) · Post by **Stewart (oily!)** » Sun Oct 08, 2006 6:38 pm

I am sure I have seen carded kits to fit pug 405s somewhere, it cant be rocket science can it.
stewart

ellevie · Post by **ellevie** » Wed Oct 11, 2006 6:56 pm

FUEL SYSTEMS on 020 8341 0183 www.carburetters.co.uk have a manual choke kit for the Z1 Solex @ £79 + vat and post.
I think the man at RPL quoted less than £35 when I spoke to him almost a year ago

DLM · Post by **DLM** » Thu Oct 12, 2006 1:26 pm

They definitely have been available - GS & F used to do one, and I've seen others on the shelf. Unfortunately you missed out on the 16TRS carb with manual choke conversion fitted that I advertised recently - Kitch had that. That came from a scrappy car - but the days of having enough BXs in the scrappies to hope for a converted car turning up are long gone.

sleepy0905 · Post by **sleepy0905** » Thu Oct 12, 2006 4:32 pm

I know i was too late for that one. but i will keep looking round for one.

ellevie · Post by **ellevie** » Thu Oct 12, 2006 7:51 pm

sleepy0905 wrote:......for a bx 1.9 either solex or weber.

Have you got a Solex installed and a Weber as a spare ? Or is it the other way round ?
My second BX is a 19TRS automatic with a Weber carb and the autochoke works like a dream compared to the way the Solex used to work on my manual BX before I converted the choke to manual.

sleepy0905 · Post by **sleepy0905** » Thu Oct 12, 2006 8:03 pm

I have a solex but I dont mind if i can get a kit for a weber as i can modify it to do as i want.

ellevie · Post by **ellevie** » Fri Oct 13, 2006 9:00 pm

Here's somebody who's done a home-made conversion. The pics fairly speak for themselves.
http://peugeot-205.neuf.fr/modif_starter_auto.pdf

sleepy0905 · Post by **sleepy0905** » Sat Oct 14, 2006 11:13 am

Thanks i have translated the PDF with bablefish so it now makes even more sense and i shall be doing this mod Just got to get a choke cable then job done.

ellevie · Post by **ellevie** » Sat Oct 14, 2006 6:05 pm

Great stuff ! I've seen choke cables on eBay for as little as £3 so you shouldn't have any trouble getting one. It's probably best to get one of the locking types, which you twist to lock. I'll be very interested to see how you get on. Good luck !

ellevie · Post by **ellevie** » Mon Oct 16, 2006 11:54 pm

This appears to be from the same source as the pdf link above.
http://www.yaronet.com/posts.php?s=50151
The interesting thing is that it seems to suggest that a sticky choke can be cured by lubricating the waxstat drive rod with a few drops of oil. Might be worth a trying and comparing the before and after required times for the choke flap to reach the full vertical position.

One other thing Arron, the diy manual choke conversion above requires the autochoke cover to be permanently removed. If you have one with a "fat" cover containing a vacuum chamber as described in http://www.bxclub.co.uk/forum/viewtopic ... t=pulldown , then you will lose your "pull-down". You still need the pull-down to operate even with the manual conversion.

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