[928uk] 3 speed gear change rpm

[Ben Hodges]

It’s a solenoid and it’s the square looking thing with a wire connected to
it below the lever on the right side of the box.

Can send a pic if needed.

You should hear a click when the kick down switch is pressed and another
click when it’s released.

Cheers
Ben

On Wed, 5 Jun 2024 at 20:29, todd via 928uk <928uk at lists.928.org.uk> wrote:

> Hi Smiffy,
>
>
>
> Mine is a 1979 car, so I don’t think it has a kickdown relay? But… I made
> a temp fix to shorten the Bowden cable and it now changes at 4500rpm AND it
> kicks down. I just need to make a better fix (aka properly) and adjust the
> locking bolt on the throttle pressure thing (side of gearbox that the
> Bowden cables connects to)
>
>
>
> Thanks,
>
> Todd.
>
>
>
> From: Paul R Smith <smiffypr at gmail.com>
> Sent: Wednesday, June 5, 2024 9:39 AM
> To: todd at oxfordeye.co.uk; 928uk at lists.928.org.uk
> Subject: Re: [928uk] 3 speed gear change rpm
>
>
>
> The next test along this line of investigation is, repeat test with
> ignition on, can you here a relay click when your pedal operates the
> switch. You may need to expose the fuse-board to hear it.
>
> Smiffy
>
> On 04/06/2024 21:33, todd at oxfordeye.co.uk <mailto:todd at oxfordeye.co.uk>
> wrote:
>
> Hi Smiffy,
>
> Yes, I hear the click - tested and it does not kick down though. That’s a
> problem for future Todd.
>
> Todd.
>
> -----Original Message-----
> From: 928uk  <mailto:928uk-bounces at lists.928.org.uk> <
> 928uk-bounces at lists.928.org.uk> On Behalf Of Paul R Smith via 928uk
> Sent: Tuesday, June 4, 2024 9:15 AM
> To: 928uk at lists.928.org.uk <mailto:928uk at lists.928.org.uk>
> Subject: Re: [928uk] 3 speed gear change rpm
>
> When you push the pedal the last few mm to the floor (engine/ignition
> off), can you hear the kickdown switch click?
>
> Smiffy
>
> On 04/06/2024 07:25, toddgibbs111--- via 928uk wrote:
>
> Hi Llew,
>
> So, throttle is sharper, zero play. Perhaps a little too tight as I
> noticed the idle siting at 1100 (I think cable is keeping it open slightly).
>
> Anyway, gear changes at 4100 rpm still.... I'll get under the car today
> and see what I can find.
>
> Todd.
>
> -----Original Message-----
> From: Llewelyn Guildford <mailto:llew.guild at gmail.com> <
> llew.guild at gmail.com>
> Sent: Monday, June 3, 2024 4:50 PM
> To: Todd Gibbs <mailto:todd at oxfordeye.co.uk> <todd at oxfordeye.co.uk>
> Cc: 928 <mailto:928uk at lists.928.org.uk> <928uk at lists.928.org.uk>
> Subject: Re: [928uk] 3 speed gear change rpm
>
> Hi Todd
>
> No worries, I’ve been there myself with a lot of what you’re doing so it’s
> quite relaxing viewing from the sidelines!
>
> Can you send a photo?
>
> Let me know what it is like with the throttle cable adjusted , you might
> find it sorts itself out because the throttle actuator is what pulls on the
> gearbox shift cable and if it’s too slack it won’t work properly! The
> gearbox cable is definitely adjustable though, sorry I can’t explain the
> exact steps.
>
> Llew
>
> Sent from my iPhone
>
>
> On 3 Jun 2024, at 16:09, Todd Gibbs via 928uk <mailto:
> 928uk at lists.928.org.uk> <928uk at lists.928.org.uk>  wrote:
>
> Hi Llewelyn
>
> Thanks for watch the videos :)
>
> Ok I’ve had the airbox off again today and there is no adjustment there in
> mine. I know exactly where you are thinking (there is a hard tube rising
> from the bell housing that thur cable passes through). Mine just has a
> flexible cable “shield” that connects to the hard pipe.
>
> I’ve gone back and adjusted the throttle cable, it was slightly loose, and
> about to test it out….
>
> Thanks and will report back
>
> Todd
>
>
> On 3 Jun 2024, at 09:42, Llewelyn Guildford <mailto:
> l.guildford at stemmer-imaging.com> <l.guildford at stemmer-imaging.com>  wrote:
>
> Hi Todd
>
> I follow your project on YT - Great progress 😊
>
> It's a while since I've done this (2017 I think!) so hopefully my memory
> serves me semi-well!
>
> The cable is adjustable - Although the adjuster doesn't look obviously so.
> It seems hard to find an image of it online. The adjuster isn't as an end
> of the cable, it is half way down. It is located slightly right of centre
> if you're looking from the front of the car, and is situated behind the
> airbox on or near the bell housing, so if you take off your airbox and look
> down behind the bulkhead, standing on the left hand side of the car you
> should be able to see it. I can't remember in detail exactly how to tension
> it but it is fairly obvious.
>
> Check list for correct shifting:
>
> Make sure the kickdown switch is working, is adjusted correctly and
> that the throttle pedal actuates it at WOT (all this can be done
> stationary) Make sure the gearbox has the right level of oil in it and
> that the oil is in reasonable condition I've personally never had to mess
> around with the vacuum modulator thing on the gearbox and I've had quite a
> few 3 speed 928s.
>
> Then move on to the cables
>
> Start with the throttle cable and get it tensioned so it's nice and tight
> but doesn't bind! Once you're happy with that adjust the elusive Bowden
> cable and you should be good to go.
>
> Gearbox side I would a) not mess with the vac modulator other than
> to make sure there are no vacuum leaks b) whatever you've altered on
> the cable mount bolt I'd put it back to the original position
>
> 9 times out of 10 gearboxes run perfectly after this.
>
> When you've got a baseline result you can then drive, make a small
> adjustment to the Bowden cable either way then compare - You'll find your
> own sweet spot with it!
>
> If you need a hand ever I do find myself in Oxford from time to time so
> could pop over and have a look with you...
>
> Hope this helps,
>
> Llewelyn
>
> -----Original Message-----
> From: 928uk <mailto:928uk-bounces at lists.928.org.uk> <
> 928uk-bounces at lists.928.org.uk>  On Behalf Of Ben Hodges
> via 928uk
> Sent: Sunday, June 2, 2024 7:12 PM
> To: Todd Gibbs <mailto:todd at oxfordeye.co.uk> <todd at oxfordeye.co.uk>
> Cc: 928 List <mailto:928uk at lists.928.org.uk> <928uk at lists.928.org.uk>
> Subject: Re: [928uk] 3 speed gear change rpm
>
> Hi Todd
>
> I’ve sent you a couple of docs that may help - apologies if you
> already have them
>
> Cheers
> Ben
>
>
> On Sun, 2 Jun 2024 at 16:43, Todd Gibbs via 928uk
>  <mailto:928uk at lists.928.org.uk> <928uk at lists.928.org.uk>
> wrote:
>
> Gents,
>
> Someone put me out of my misery - how do I adjust my 3 speed
> gearbox change up rpm?
>
> Currently it changes at 4100rpm.
>
> My Bowden cable is not adjustable, it has press fittings both ends.
> I’ve adjusted the pressure module and now my gear changes are
> punchier (good), but same 4100rpm. I’ve adjust the bolt thing on
> the side of the gearbox in the mechanism that the Bowden cable pulls on.
> 4100rpm still.
>
> So I’m at a loss. What else is there?
>
> Thanks for any help
>
> Todd
>
>
>
>
>
>