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Gear Box Mount
richyo - 23/3/04 at 02:40 PM

The premade chassis I have has the g/box mounts in the wrong place to suit the 4 speed box I have.
My query is : Can I make up suitable sized plates and BOLT them to the chassis as I can't weld worth a s**t.
Another query is is a Type 9 box longer than the standard 4 speed in relation to the mounting point. I don't want to go down that route as I bought a new clutch for the 4 speed and I don't have a Type 9 box.

Sorry for rabbiting on, thanks in anticipation

[Edited on 23/3/04 by richyo]


200mph - 23/3/04 at 04:41 PM

I'd think bolting the mount is fine done correctly, as this is how it is attached to the donor.

Might be wrong tho (as always)

Mark


Mark Allanson - 23/3/04 at 08:36 PM

It may be worth getting a type 9 as the gear lever will be in the right place, and you will have the advantage of a 5th gear


britishtrident - 24/3/04 at 08:37 AM

quote:

snip
Another query is is a Type 9 box longer than the standard 4 speed in relation to the mounting point. I don't want to go down that route as I bought a new clutch for the 4 speed and I don't have a Type 9 box.
snip
[Edited on 23/3/04 by richyo]


I hope this helps.

A lot depends what you mean by standard 4 speed ---
The Sierra 5 speed box is quite a lot bigger than the Escort 4 speed box, but is the same size as the larger of the 2 types Sierra 4 speed box. The older Cortina/Capri/Early Sierra boxes are roughly the same length as the type 9 but much more compact width wise and have a much neater bellhousing.
See another thread for drawing by me giving dimensions of the 5 speed.



Clutches I don't know what engine you have.
As for clutches to mate a Sierra 5 speed box to a crosslflow with a 7.5" clutch all you need is a Hillman Avenger driven plate -- the Avenger pressure has the same part number as the Cortina/Escort.

--------------------------------

Notes on attached drawing
______________________
Simple Chassis Mount for Sierra Type 9
On my car I gave the drivers side section of the tunnel a dog leg to allow the type
9 box to fit while still allowing some room for the driver. The tunnel shown on the sketch
is based on a standard chassis and may need changes to suit.
Don’t scale off the drawing it is just a rough sketch to show the idea, on my car the tail
end of the gearbox fell in line with member B2.

Escort, Cortina/Capri and old MK2 2000e gearboxes have mounts in different positions
from the Type 9.
The mount design involves bolting through a 25x25 rhs --- use tubular spacers on the inside of
tube to prevent it being crushed and use large washer.