Type 9 Gearbox

[mep12345]

Looking for information on the type 9 gearbox. As it was fitted in many Fords etc over the years and sports cars with ratios adjusted to fit the car/requirements. My question is was the one used in the TVR S Series standard? i.e. were the gear ratios left at the ford settings or where they altered. Also if they were left at the ford settings were all the fords the same ratios, or do you need a box from a 2.8 capri/sierra/granada to replace a TVR one, or will one from a 1.6/2.0 Ford do the job. All info I can find says all Type 9s can take the power i.e. up to 200bhp, but I am sure if the ratios vary the cars performance will change significantly.

By the way my reason for asking is that I have a chance to get hold of a 2.0 Sierra box with low miles for a cheap price and want to know whether it is interchangable with the one on the S3 (which crunches into 2nd when changing up at high revs (note very smooth elsewhere so tend to change up early)

Cheers

[Barkychoc]

I have a 2.o litre Haynes Manual, I'll post the ratios on here in a min, then if someone has the V6 manual you can compare. (I have a V8 so only wanted the brakes chapter - got the manual for a quid).

[jimed]

Steve Heath's book says the following for the V6 S
1st - 3.36:1
2nd - 1.81:1
3rd - 1.26:1
4th - 1.00:1
5th - 0.82:1

- I don't have the Sierra details so can't help there but the above may be useful.
Jim

PS Is it me or does everyone now have to login every few days? It didn't used to be like that.

[Barkychoc]

Well I guess Haynes manuals are not what they once were - no ratios listed in the 4 pot sierra manual.
I have however found this

http://www.ford-capri.fsnet.co.uk/whiterose/gear_r...

Which shows that the first 3 ratios are lower, with 4th and 5th the same.
Will increase acceleration slightly I guess.

Do you know how old the gearbox is ?
Reading further on the above website says that some early versions of the gearbox had weak bearings.

If you need a gearbox and you know that one is fine I'd be inclined to use it.
If your car has a 2 litre gearbox anyway would you know ??

Chris

[jimed]

I've just had a look in the Haynes manual for the Granada (1985/94); it does show the ratios for the Type N gearbox which was used for the 1.8/2.0/2.4 engines.

1st - 3.65:1
2nd - 1.97:1
3rd - 1.37:1
4th - 1.00:1
5th - 0.816:1
Not sure if it helps ...
Jim

[mep12345]

Thanks all, think I'll have a go with it. In response to barkychoc's ? I believe it is from a 1990 car, but definitely a sierra so as the box started life in the Capri I wouldn't have thought it was an early box. This said I will still have the old one which I can overhaul slow time as I believe the problem I have is just the 1st/2nd synchro, a problem I am led to believe was caused by Ford using a GL5 spec oil instead of a GL4 which increases wear in this compontent.

[clarenceboddiger]

jimed said:

Steve Heath's book says the following for the V6 S
1st - 3.36:1
2nd - 1.81:1
3rd - 1.26:1
4th - 1.00:1
5th - 0.82:1
- I don't have the Sierra details so can't help there but the above may be useful.
Jim

The Haynes for the Sierra v6 1982-1991 shows the 2.8 as above (5th given as 0.83:1), The gearbox is referred to as a N3 type.
The 2.3 litre shows 2nd @ 1.97:1 and 3rd @ 1.37:1, 1st 4th and 5th are the same, these are referred to B type (4 speed box) and N1 type (5 speed box).
Looking at the above site , the 2 litre seems the same as the 2.3 V6,,,, better acceleration in 2nd and 3rd ???

Edited by clarenceboddiger on Sunday 30th September 18:07

[Jed-S]

I've seen it said many times that the Ford V6 Type 9 gearbox has a longer input shaft than the one used on 4 cylinder cars. I assume that TVR used a regular V6 one with the longer input shaft. Worth checking before you buy a Sierra 4 cyl type 9 box though.

[Sweet Thunder]

This article contains lots of info about type 9 gearboxes:
http://fordpower.org.uk/forum/index.php?act=Attach...
Apparently the box that Ford used for the V6 engines was stronger than the four-pot box.

If the gearbox you're after is from a '90 Sierra, it will probably be the later MT75 box. This should be clear to see: T9 has a cast iron housing with separate bell housing and steel top cover. MT75 has a one-piece, ribbed, alloy housing & bell. four- and six cylinder bell housings are not interchangeable, so I guess you'll have to look further.

[bil]

the sierra haynes 82-88 up 2.0l indicates a type b and n1 were used, b being 4 gears and reverse, n1 being 5 gears and reverse.
N1 ratios;
1st : 3.65:1
2nd : 1.97:1
3rd : 1.37:1
4th : 1.00:1
5th : 0.82:1
rev : 3.66:1

the sierra haynes 82-92 up 2.0l indicates a type b and n were used, b being 4 gears and reverse, n being 5 gears and reverse.
N ratios in all models except P100
1st : 3.65:1
2nd : 1.97:1
3rd : 1.37:1
4th : 1.00:1
5th : 0.82:1
rev : 3.66:1

N ratios in P100
1st : 3.91:1
2nd : 2.29:1
3rd : 1.38:1
4th : 1.00:1
5th : 0.82:1
rev : 3.66:1

the sierra haynes 82-91 v6 indicates a type b, n1 and n3 were used, b being 4 gears and reverse, n1 and n3 being 5 gears and reverse.
N1 ratios in 2.3l models
1st : 3.65:1
2nd : 1.97:1
3rd : 1.37:1
4th : 1.00:1
5th : 0.82:1
rev : 3.66:1

N3 ratios in 2.8l models
1st : 3.36:1
2nd : 1.81:1
3rd : 1.26:1
4th : 1.00:1
5th : 0.83:1
rev : 3.36:1

the bible indicates that as ford went to the 2.9l it also changed to the MT75 box with the ratios;
MT75 ratios in 2.9l models (from haynes V6)
1st : 3.61:1
2nd : 2.08:1
3rd : 1.36:1
4th : 1.00:1
5th : 0.83:1
rev : 3.26:1

the bible goes on to say that TVR didnt follow suit and whilst some 2.9 engines were fitted with the MT75 its the exception rather than the rule, the majority appear to have the N3 box (the ratios in the bible matching the N3) the smaller ratios giving crisp acceleration.

Based on this comparison the 2.0l is not a straight swap.

B

[Roy C]

bil said:

the bible goes on to say that TVR didn't follow suit and whilst some 2.9 engines were fitted with the MT75 its the exception rather than the rule, the majority appear to have the N3 box

Never seen an MT75 in an S. TVR thought about it, but AFAIK never did it.