locost 7 k
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| posted on 14/3/14 at 10:25 AM |
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Do all type 9's use the same 23 spline input shaft
I'm currently getting parts together to make a bellhousing for my k series to type 9, I'm just wondering if all type 9 uses the same 23
spline shaft for the clutch
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Paul Turner
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| posted on 14/3/14 at 01:50 PM |
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All the original Ford boxes do. The recent Caterham boxes supplied for use on Sigma cars (and possibly Duratec) don't but it doubtful you will
see one of these.
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robocog
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| posted on 14/3/14 at 10:40 PM |
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Long nose for the V6 engines and shorter nose for inline 4's IIRC
Regards
Rob
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scimjim
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| posted on 15/3/14 at 08:18 AM |
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not quite that simple unfortunately Rob 
The Scimitar SS1 uses the type 9 on the CVH and later, on the K series (all with open Ford IRS diff, push in shafts and rear (non-Ford) drum brakes).
This is what I've compiled so far (and is in no way complete)
Input shafts:
There are “long” and “short” input shafts and input shaft covers.
The “short” (6.9”) input shaft for the 4 cylinder engines has 18 teeth with a short cover.
The “long” (8.1”) input shaft for the V6 engines with a long input cover has 18 teeth for the 2.3 or 19 for the 2.8/2.9.
The diesel gearbox has a “long” (8.1”) shaft with 18 teeth (as the 2.3 V6) but a “short” cover.
There is also a special “transit” length shaft used by Caterham with the K series - Reliant appear to use a 2.8 box with a Caterham bellhousing but
modify the K series crank in the Sabre mk2?
Ratios:
1.6, 1.8, 2.0, 2.3 V6
1st 3.65
2nd 1.97
3rd 1.37
4th 1
5th 0.82
2.8/2.9 inc 4x4
1st 3.36
2nd 1.81
3rd 1.26
4th 1
5th 0.83
diesel
1st 3.91
2nd 2.29
3rd 1.38
4th 1
5th 0.82
Front layshaft bearings can be "early" or "modified" - visible as a half-moon cover secured by 3 bolts just below the input
shaft.
Early and late tail shafts (which must have the matching selector shaft fitted)
Mechanical or electric speedo
[Edited on 15/3/14 by scimjim]
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owelly
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| posted on 15/3/14 at 09:47 AM |
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For your question....
quote:
I'm currently getting parts together to make a bellhousing for my k series to type 9, I'm just wondering if all type 9 uses the same 23
spline shaft for the clutch
The lengths of the shafts are irrelevant. As said, the Sierra type 9 'boxes have 1" 23 spline input shafts.
http://www.ppcmag.co.uk
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locost 7 k
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| posted on 15/3/14 at 10:08 AM |
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quote:
Originally posted by scimjim
not quite that simple unfortunately Rob
The Scimitar SS1 uses the type 9 on the CVH and later, on the K series (all with open Ford IRS diff, push in shafts and rear (non-Ford) drum brakes).
This is what I've compiled so far (and is in no way complete)
Input shafts:
There are “long” and “short” input shafts and input shaft covers.
The “short” (6.9”) input shaft for the 4 cylinder engines has 18 teeth with a short cover.
The “long” (8.1”) input shaft for the V6 engines with a long input cover has 18 teeth for the 2.3 or 19 for the 2.8/2.9.
The diesel gearbox has a “long” (8.1”) shaft with 18 teeth (as the 2.3 V6) but a “short” cover.
There is also a special “transit” length shaft used by Caterham with the K series - Reliant appear to use a 2.8 box with a Caterham bellhousing but
modify the K series crank in the Sabre mk2?
Ratios:
1.6, 1.8, 2.0, 2.3 V6
1st 3.65
2nd 1.97
3rd 1.37
4th 1
5th 0.82
2.8/2.9 inc 4x4
1st 3.36
2nd 1.81
3rd 1.26
4th 1
5th 0.83
diesel
1st 3.91
2nd 2.29
3rd 1.38
4th 1
5th 0.82
Front layshaft bearings can be "early" or "modified" - visible as a half-moon cover secured by 3 bolts just below the input
shaft.
Early and late tail shafts (which must have the matching selector shaft fitted)
Mechanical or electric speedo
[Edited on 15/3/14 by scimjim]
Great! Thanks for that
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Ugg10
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| posted on 13/10/15 at 04:01 PM |
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Sorry to dig up an old thread but does anyone know what ratios the Caterham Sigma gearbox has? From what I can gather it is a v6 box (3.36 first etc.)
with 19 spline input shaft (to fit the stock clutch plate but still long version) that may have a 0.75 5th. Can anyone confirm ?
Thanks
---------------------------------------------------------------
1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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Paul Turner
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| posted on 14/10/15 at 08:22 AM |
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Caterham use the V6 ratios in some cars but not all these days.
If they are V6 ratios they will be:
1st 3.36
2nd 1.81
3rd 1.26
4th 1
5th 0.825
To provide a 0.75 5th would make the box very expensive since a new 5th gear pair would be needed. Add to that the gap between 4th and 5th would be
much bigger than normal and combined with a smaller engine would make it not a great experience. When we change ratios we always close them up.
But from conversations I had with a new Caterham sigma owner a couple of years ago the basic Sigma cars were being fitted with 4 cylinder ratios and
the only change was the input shaft to a long one with splines to match the clutch. He was quite disappointed after his K Series car with V6 ratios
which although not perfect were better.
[Edited on 14/10/15 by Paul Turner]
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Ugg10
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| posted on 14/10/15 at 12:34 PM |
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Paul
Many thanks, I was looking at one on ebay at the moment and have had it confirmed that it is a stock 2.0l type just with the input shaft changed
(looks like a long shaft though). I already have a stock 2.0l box and have used a pinto clutch so will be giving this one a miss, if it was a v6 wit
the sigma shaft I may have been interested. Bearingkits do a .75 sigma v6 gear kit advertised for Caterhams - wondered if this was a standard fitment
- http://www.bearingkits.co.uk/details.asp?ID=680
[Edited on 14/10/15 by Ugg10]
---------------------------------------------------------------
1968 Ford Anglia 105e, 1.7 Zetec SE, Mk2 Escort Workd Cup front end, 5 link rear
Build Blog - http://Anglia1968.weebly.com
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Paul Turner
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| posted on 14/10/15 at 12:46 PM |
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quote:
Originally posted by Ugg10
Bearingkits do a .75 sigma v6 gear kit advertised for Caterhams - wondered if this was a standard fitment -
They may be simply changing the 5th gear pair to those used in a diesel box, you can get interesting ratios doing those sort of things, its basically
what BGH do.
But as I said before, who in their right mind would want such a huge drop from 4th to 5th in a car they have built for enjoyment and spirited driving
especially when fitted behind a small Sigma engine. Might make more sense behind a 2.3 Duratec.
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