hi just trying to identify this gearbox what car its from first gear has 28 teeth is it long or short input shaft hopefully it will fit my xe project
hi just trying to identify this gearbox what car its from first gear has 28 teeth is it long or short input shaft hopefully it will fit my xe project
150mm would be an inline 4 petrol. (diesel and v6 are longer)
Believe ratios should be;
1st 3.65
2nd 1.97
3rd 1.37
4th 1.00
5th 0.82
29 should be the 1st gear count not 28.
...or so my notes are saying
1970 Mk1 Escort Tarmac Rally Car
Sounds about right - 1st four ratio's are identical to a 4 speed box - the long nose version has taller ratios in comparison.
that might be the first gear in the box but its not 1st gear!
Looks like 1st gear to me!Originally Posted by Graham
on a rwd ford 4 speed 1st,2nd and 3rd gears are not a single pair, as the drive is firstly dropped down to the lay shaft then comes back up to the main shaft, so each ratio (except 4th) is formed by two pairs of gears. the gear arrowed is actually a drop gear to drop the power down to the lay shaft, in fact you could actually refer it it as 4th, because its the dog teeth on the side of it that engage with the 3/4 syncro hub to give a direct drive straight through the box.
it took me a while but i found a picture on the web which should explain
I'm sorry but I think you are wrong Graham - the arrowed gear is the gear that brings the drive back up from the layshaft and is locked to the mainshaft by the synchroniser and this gives 1st gear.
The input shaft that takes the power from the engine and drops it down to the layshaft in gears 1, 2, 3 (and 5 for type 9) is on the right hand side of the photo not the left. The gear is small and is small enough to pass through the front of the case when overhauling type 9's. The arrowed gear would not pass through the front of the case.
I'm aware of how first gear ratio is worked out in terms of compound gear ratios but we aren't talking about ratios, we are talking about which gear is the first gear cog for help with identifying if this is a standard type 9 or not. For example, the modified type 9's with 2.98:1 first gear use a 30 tooth 1st gear cog, whereas a standard type 9 uses 29.
If someone wanted to buy the gear on the mainshaft that is selected when going for first gear ratio in a standard type 9 then (in days gone by) they would go to their friendly Ford dealer and ask for a first gear for the mainshaft. They would only supply a customer with that gear that is arrowed above.
Last edited by HonkyWhiteTrash; 23-12-2019 at 09:40.
perhaps im looking at the box the wrong way round? it all hinges on which sid is in and which out!
thank you just counted the teeth again and it is 29
Indeed the gears on the firstmotion shaft and layshaft (nearest to the bellhousing) are drop gears. 4th gear which is direct drive is engaged by the syncro disc locking onto the firstmotion shaft and making it direct drive with the mainshaft.
I remember circa 1980 retiring from a Road Rally in an Escort Twink fitted with a 2000E gearbox. I had no gears apart from 4th which made it very interesting to say the least driving it back Home. When we got the gearbox to pieces we found all the teeth had stripped off the input shaft hence why the layshaft wasn't turning but we still had top gear. Apparantly is was a common problem with the 3 rail 2000E gearboxes.
The arrow on the gear in question does look as if it could to be at rear of the gearbox.
Last edited by Forest_rallying; 23-12-2019 at 16:09.
arrow is at the front of the gearbox bell house side
Look again - if the gearbox was that way around 1st gear ratio would be 1:3.65 and not 3.65:1 as a STD Type 9 is. You wouldn't be able to get off the line if that is how the ratios work!
In the photos of yours you can just see the big bolt heads in the left hand side of the picture that hold the tailhousing on!
Photos below show that the input shaft has a small gear not a large one :
The above photo through the top of the lid makes sense Honky, Input shaft to the left of the shot with the small gear machine onto the shaft that then drives the layshaft. First gear is the large one on the far right which is the rear of the gearbox. This is the one that Hossman says has 29 teeth.
so sorry your right
did it over a phone call should of done it myself
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