Pre cross flow + type 9?

[mk2tony 3]

Am running a 1500 pre cross flow at the moment on a standard 4 speed box, looking to upgrade to a type 9 box, any one got any advice at all? Any modifications I might need to do? Would any type 9 fit onto a pre cross flow?

 

Thanks Tony

[tizwass 23]

if you want a better top end speed just swop the diff fit a 3.54

[mk2tony 3]

3:5.4 way too expensive, already have the 3:77 fitted so the type 9 is a cheaper option.

[MLI 8]

I fail to see how fitting a type 9 box would be cheaper than fitting a 3.54 diff?

Especially when you think about the other parts you would need for the type 9 swap

(clutch, clutch wire, sierra clutch pedal, gearbox mount, propshaft etc)

[madflow 0]

ran my mk1 1500 automatic with type 9 and 3.77 ratio for awhile , first gear ratio is a pain but top end was much nicer as it was easier on the revs, not the easiest swop as the sierra b/housing puts the starter motor to low ,fouls the xmember and is cable clutch. my way out and easier i found was to use an automatic 1500 b/housing and have an adaptor plate made up to suit type9, then custom propshaft was made .used the auto gearbox x/member spaced down 25mm . you might need some tunnel cutting as well.

[tizwass 23]

yep just fit a 3.54 diff as it makes no diference what gear box is fitted as top gear funs of the diff

[buddyrich 0]

Surely it's not that simple. For that to be true, top gear in any of the four speed boxes would have to be the same ratio as the top/overdrive gear in the type 9. I've never fitted a five speed but i'd imagine 3.54 would be too long in conjunction with a 5 speed. My engine certainly wouldnt be happy going uphill with that combination of long diff and overdrive gear. You'd always be changing down.

[Danish 294]

Surely it's not that simple. For that to be true, top gear in any of the four speed boxes would have to be the same ratio as the top/overdrive gear in the type 9. I've never fitted a five speed but i'd imagine 3.54 would be too long in conjunction with a 5 speed. My engine certainly wouldnt be happy going uphill with that combination of long diff and overdrive gear. You'd always be changing down.

 

I had a type-9 with a 3.44, and yes, 5th was a motorway cruising gear, you had to change down for hills. But then it was quite nice cruising at a steady 70 with the revs below 3000.

 

That said, when I got the chance I changed to a 3.75.

[tizwass 23]

I had a type-9 with a 3.44, and yes, 5th was a motorway cruising gear, you had to change down for hills. But then it was quite nice cruising at a steady 70 with the revs below 3000.

 

That said, when I got the chance I changed to a 3.75.

well i woud rather change down a gear on a hill than have the car reving its nuts off on the motorway and a higher diff gives better fuel ecomony

[buddyrich 0]

True. It's a trade-off between the two. How was it was the 3.75? I'm considering a 3.77 or a 3.9 if I fit a type 9.

[kenbex522 34]

When I first built my Zetec Anglia powered van, bearing in mind the low weight of van and power of the Zetec, I ran a 4 speed 2000e with a 3:54 diff. At 70 to 80 mph, I felt the engine was still a bit busy.

I fitted a type 9 with a 3:3 first gear, and tbh it lost the nippiness it had. Overtaking was a pain and you had to change right down to 3rd top make any quick progression.

I changed to a 3:7 diff and that was far better with the type 9. Overtaking became more tolerable just dropping to 4th, and it just cruised at 80 to 85 and you could still hold a conversation without shouting.

 

Bearing in mind my Zetec had about 125 ftlb of torque even at low revs, I'm not sure the OP's 1500 pre crossflow is going to have enough power to pull itself along in 5th without constantly changing gear, even on a motorway. That would just get really annoying I would have thought.

[buddyrich 0]

That's what my concern is. I'm going to be using a 1500 pre crossflow which has been bored but is otherwise standard. I dunno what level of tune I'm going to go for but hopefully it'll have enough torque.

[kenbex522 34]

I think all you can do is experiment with the diff ratios and see what your vehicle is most comfortable with.

 

I don't see the point of having that extra 5th gear, if its necessary to keep changing down every time there is a slight incline. Apart from where I live, Britain isn't that flat.

[mk2tony 3]

thanks all for your reply's, type 9 is going into a consul classic with a 3.77 diff, it fits perfectly only modification to bodywork will be new hole for gear leaver, for any one else that would like to do the type 9 conversion on a pre-cross flow engine here's what you need.

 

cross flow clutch cover

23 spline clutch to fit inside the clutch cover (retro ford do them)

i have made a gearbox mount to suit my motor (you will need to do this as well)

sierra / Capri prop end shaft (thanks to the-ford-cortina.com)

and your prop either made new or adjusted to fit the new gap

if your going with cable then you will need a clutch pedal to replace your hydraulic one

and a speedo cable modification (available from Old Ford Autos)

hydraulic modifications are available but I found them to be very expensive.

 

im not too worried about the having to change down gears on hills and most of the shows I do are well over 100 miles away so motor way cruising is more important to my ears :D

 

if I have missed any thing off feel free to add to it

 

Tony

Edited April 9, 2013 by mk2tony