Borg Warner 35 issue

[Swifty75]

Hi All,

I went out for a drive today. I had done abot 60 miles and exited a roudabout at about 25mph, I put my foot down expecting a kick down and it didn't? Got to the next junction and when I set off it went through 1-2-3 very quickly and I was in top before I had got to 15mph? If I put it in 2 it holds 1st for longer from a start. But it is changing up really quickly. I had not done anything to it. Since getting back I have checked the oil level which looks good. Also checked the kickdown cable which seems OK at the carb end, I cannot get easy access to the top of the gearbox, but you can feel the cable acting on the cam.

Has anyone had anything similar, or have any ideas what could be the issue.

Thanks Neil

[Swifty75]

Also when you disconnect the carb end of the cable it pulls up with resistance and then retracts in a motion that would make you think that it is pulling against a cam. With it refusing to work at all I thought that the cable would have snapped but it has not. I have adjusted it to the maximum and to the minimum and it acts as though it is not attached at all. Also to note is that the crimped stop on the cable is missing, this would mean that it would be easier for it to disconnect in the geabox but pullling the cable makes me believe that it is in place.

I suppose the only think to do is drain the gearbox and remove the sump to check the cable and cam that end?

Any help much appreciated!

[rwdstag]

See type 65 problems below
Andy
I hasten to add I have no commercial interest
is a fab auto box guy
he gives advice etc I am so happy with my exchange box but he will let you know what he thinks is wrong before you going to the trouble of taking it out
mall good with new box
good luck
Rich

[Swifty75]

Think I might have found it. I took the access panel off the transmission tunnel. You can feel where the cable goes into the box, the outer sheath has come out of the union at the end and has started to split meaning that the action on the cam in the box is not what it should be. I have ordered a new cable but fitting looks difficult as there is limited space.
Anyone done this, and have any advice?

Thanks for any help Neil

[richardthestag]

gearbox sump needs to come off if I recall correctly. did mine when the box was out of the car.

cannot help much more than that really

[Swifty75]

So today I have cheanged the cable, this was an awful job with little or no access. The sheath had come out of the knuckle of the kickdown cablleat the gearbox end. It was then balancing on the top of the knuckle. It must have increased the size of the outer by around a cm. The operation must have gone tighter, and the action on the cam in the gearbox would have been greater, as effectively the inner cable was shorter. I would have thought that this would have made it kickdown earlier not later. I am pretty certain this is the issue as the cable looks OK at the end where it has pulled out, but would have thought that it would have had the opposite effect. I have the new cable in place, and have been on a short test drive and it did not kickdown propoerly again. It started to rain and having spent 4 hours wrestling with this I had ran out of energy to try and make it work.

Does anybody agree with me on what they think the above (or below picture) would do? I am not sure any amount of messing with this will make it work?

Thanks for any advice given?

Neil
IMG_1658[1].JPG

[Alacrity]

The cable doing what it has done will cause the shifts to go really late - plus it will leak of course!

[Swifty75]

Annoyingly the shifts have gone really early. I have put a new cable on and it acts like it has no cable attached. It must be something else in the box but what? It looks like it might be a box out and then exchange or rebuild?

thanks for the reply.... thought I was going mad!

[Alacrity]

Are you sure it is connected to the cam in the gearbox? If you disconnect it at the top & pull it out does it pull/spring back in when released? If so then it is connected correctly inside the gearbox, if not then you have not connected it. If all OK in the gearbox then are you sure it isn't as simple as the adjustment of the outer cable? The cable is adjusted away from from the inner (i.e. make the outer longer) to make the shifts later. On a light, normal pull away - in town driving for example - the gearbox should shift into 3rd at approx 25 mph.

[Swifty75]

Thanks for your help alacrity.

i changed the cable and I am sure it is connected. I have adjusted it from the top to the bottom and nothing changes. I am taking it to a gearbox specialist who I called today, he says that it might be the governor valve. It was funny the way it went. Working fine and then nothing. I really thought the cable had snapped, but no.

Hope me to get it sorted soon.

cheers for the help.

[Alacrity]

I don't know which transmission 'specialist' you called but it cannot be the 'governor valve'. A problem with the governor WILL NOT cause early shifting. It can cause erratic shifts or sticking in one gear (normally 1st) but its just not possible for it to cause early shifts.

Find another specialist as this one has demonstrated a lack of knowledge/understanding and could cost you a lot of money for no result.

[Swifty75]

Thanks for the response.

it will be good to know what the issue is. The transmission specialist was recommended by the triumph specialist I spoke to, who said ‘ you can bring it here but we would only take it there, he knows a bw35 back to front’. He said he thought it would be the cable, but the governor ‘MIGHT’ be the issue. I suppose it is hard for any specialist to diagnose a problem over the phone.

Anyway we will see come Friday.

Many Thsnks Neil

[Alacrity]

As I say, it CAN'T be governor.

[Alacrity]

How did you get on last Friday?

[garyf]

How did you get on last Friday?

I'm curious as well