Gearbox quandary!....

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Gearbox quandary!....

Post by Oxymoron » Fri Aug 25, 2017 7:54 am

Hi,
I have a predicament regarding the gearbox in my Se6a.

I have replaced the master and slave cylinders and hydraulic line with a braided one, so gear changes are easier when hot, but it has made the clutch pedal firmer.

This in turn is hurting my left knee, which I injured a few years ago when I dropped a large TV on it whilst moving house!

Since driving to Curborough and back I have been feeling the effects of the firmer pedal!

So should I:.....

A/ Source and fit an auto box to my car.

B/Look for an Automatic Scimitar and sell the manual car.

C/Stop being a "wuss" and get used to it.

D/Buy an Opel Monza :shock:
Last edited by Oxymoron on Fri Aug 25, 2017 8:28 am, edited 1 time in total.


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Gearbox quandary!....

Post by Nick » Fri Aug 25, 2017 7:59 am

Generally better to change the car than try to convert to an Auto. Do you have overdrive? This helps in normal driving

I think it is possible to fit a larger bore clutch slave cylinder which would reduce pressure, but increase travel. Perhaps others can comment on this.


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Gearbox quandary!....

Post by toolmanchris » Fri Aug 25, 2017 8:03 am

Did Fuzz Townshend not fit a servo to someone's clutch on Wheeler dealers for a similar reason or have I just made that up :wink:


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Gearbox quandary!....

Post by AJL Electronics » Fri Aug 25, 2017 8:16 am

You could put a proper gearbox in it, but you have a few issues...

1) You need to source a gearbox. You could use a C3 but it would be much nicer to have the A4LD. As they are hard to come by in the right spec, it could take a while to find one. It would require a vacuum switch from a Granada to make the TCC work safely.
2) You COULD use the manual pedal box, slightly modified but it would be better to fit the auto pedal box.
3) Throttle linkage... Can't remember if it has the kickdown option or whether you will need to change that. If you use the second generation box you will need to mod the linkage with a switch and timer relay for the solenoid kickdown to work..
4) If you go A4LD you will need an SE5a propshaft to go with it.
5) You will need a matching gear shift. Difficult to find the late low profile one so you might have to use the "Middlebridge" type which requires some surgery to the fibreglass.


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Gearbox quandary!....

Post by Oxymoron » Fri Aug 25, 2017 8:38 am

toolmanchris wrote:
Fri Aug 25, 2017 8:03 am
Did Fuzz Townshend not fit a servo to someone's clutch on Wheeler dealers for a similar reason or have I just made that up :wink:
Now that sounds good!


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Gearbox quandary!....

Post by Oxymoron » Fri Aug 25, 2017 8:41 am

AJL Electronics wrote:
Fri Aug 25, 2017 8:16 am
You could put a proper gearbox in it, but you have a few issues...

1) You need to source a gearbox. You could use a C3 but it would be much nicer to have the A4LD. As they are hard to come by in the right spec, it could take a while to find one. It would require a vacuum switch from a Granada to make the TCC work safely.
2) You COULD use the manual pedal box, slightly modified but it would be better to fit the auto pedal box.
3) Throttle linkage... Can't remember if it has the kickdown option or whether you will need to change that. If you use the second generation box you will need to mod the linkage with a switch and timer relay for the solenoid kickdown to work..
4) If you go A4LD you will need an SE5a propshaft to go with it.
5) You will need a matching gear shift. Difficult to find the late low profile one so you might have to use the "Middlebridge" type which requires some surgery to the fibreglass.
Now that sounds Scary! :shock: I could doubtless source all of the parts over time, but I would need someone competent to fit them, as it would be beyond my meagre capabilities!....My local garage has already gone off Scimitars after fitting the clutch hydraulics and finding previous bodges! :lol:


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Gearbox quandary!....

Post by peter freeman » Fri Aug 25, 2017 8:41 am

You can also fit a brake servo to the clutch - been done and apparently works very well.



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Gearbox quandary!....

Post by Oxymoron » Fri Aug 25, 2017 8:42 am

Nick wrote:
Fri Aug 25, 2017 7:59 am
Generally better to change the car than try to convert to an Auto. Do you have overdrive? This helps in normal driving

I think it is possible to fit a larger bore clutch slave cylinder which would reduce pressure, but increase travel. Perhaps others can comment on this.
I have overdrive, which does help, as I tend to change from first to 3rd, to OD 3rd, when not out on the open road!


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Gearbox quandary!....

Post by Oxymoron » Fri Aug 25, 2017 8:43 am

peter freeman wrote:
Fri Aug 25, 2017 8:41 am
You can also fit a brake servo to the clutch - been done and apparently works very well.
Is there space under the bonnet for it?


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Gearbox quandary!....

Post by peter freeman » Fri Aug 25, 2017 8:46 am

The one I saw was fitted to a 5A - where there's a will there's a way. In the 5A it was fitted in front of the expansion tank - out with the measuring stick my lad.



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Gearbox quandary!....

Post by AJL Electronics » Fri Aug 25, 2017 9:16 am

Oxymoron wrote:
Fri Aug 25, 2017 8:41 am

Now that sounds Scary! :shock: I could doubtless source all of the parts over time, but I would need someone competent to fit them, as it would be beyond my meagre capabilities!.
Ahem!


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Gearbox quandary!....

Post by upstart8s » Fri Aug 25, 2017 9:17 am

toolmanchris wrote:
Fri Aug 25, 2017 8:03 am
Did Fuzz Townshend not fit a servo to someone's clutch on Wheeler dealers for a similar reason or have I just made that up :wink:
I'm not sure about Fuzz, but I contacted Nigel who had done one in a Scimitar for PC magazine. (I was looking for SS1) That's why I missed Curborough, and you lot keep going on about how good a time everybody had! Anybody want to swap a 1600 SS1 for an auto 6a?
Stu



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Gearbox quandary!....

Post by philhoward » Fri Aug 25, 2017 9:18 am

You can fit the servo wherever you want - even inside the inner wing if it will fit.

In front of the expansion tank is probably a good shout though from what I remember of a 6a underbonnet.


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Gearbox quandary!....

Post by scimjim » Fri Aug 25, 2017 11:09 am

upstart8s wrote:
Fri Aug 25, 2017 9:17 am
toolmanchris wrote:
Fri Aug 25, 2017 8:03 am
Did Fuzz Townshend not fit a servo to someone's clutch on Wheeler dealers for a similar reason or have I just made that up :wink:
I'm not sure about Fuzz, but I contacted Nigel who had done one in a Scimitar for PC magazine. (I was looking for SS1) That's why I missed Curborough, and you lot keep going on about how good a time everybody had! Anybody want to swap a 1600 SS1 for an auto 6a?
Stu
Converting an SS1 would be fun - first convert the pedal to push a slave cylinder instead of pulling a cable, then convert the gearbox to a hydraulic slave (concentric might be better?), then add a remote servo somewhere (plenty of room in an SS1). Expensive if you're paying for expert labour - but worth it IMHO if you want to keep the car.


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Gearbox quandary!....

Post by philhoward » Fri Aug 25, 2017 11:12 am

Fitting a master cylinder to the pedal is actually reasonably easy - just fit it backwards (so it sits above your foot). I had a trial fit of one (from a Ford of some description) when I was looking at fitting an MT75 to mine.


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