Ford 4x4 cossie chassis build ?

[waynes world]

Hi me again and in the planing now for my 4x4 build.

I am hoping ( i did say hoping, LOL ) to build a 4x4 with the donor sierra runnnig gear and V6 24v cossie engine etc, now then. First thing i want to do is get on with the chassis build, your opinions on the chassis build please, i was thinking to build the standard Haynes chassis then when i have the engine/running gear to modify the chassis to fit the gear and go from there.

I understand i will need to widen the etc but think this will be best once i have the chassis as a whole.

Wayne:)

[robo]

I think the biggest challenge lies at the front. The diff needs to be removed from the sump and remounting where the steering rack lives to make any sense of the driveshaft alignment to the front wheels. the drive shafts are then in the way of the front springs/shocks. Really the whole front of the car would need re engineering. Not impossible but a lot of work. Dax did it on the 4x4 rush http://classiccars.brightwells.com/viewdetails.php?id=446.

bob

[Talonmotorsport]

If your hell bent on a 4x4 roadster then you might want to look at an Impreza as it will be so much easier to make, I have the front end of a chassis already fabbed as I was going to do a flat four build. Just push the lump as far forward as you can get it and pull the front wishbones back a 100-150mm to keep the drive shaft angles some where near acceptable.

[Cyberbeej]

If your gonna build the chassis to take the 4x4 gearbox then i would start by measuring the box compared with the 2wd version and widen the chassis in the beginning as you need the room for the front shaft running by the pedal box. since your going down the V6 route then the option of moving the engine over to accomodate the shaft isnt available.

I dont see that being the big problem. The front suspension, steering and driveshaft trying to occupy the same space might be the problem. you may have to move the suspension inboard but space will be tight.

[deezee]

This is just my opinion, so if you have the time, space and skill to design and build an entire car from scratch, without plans, go for it. But most people who come on here with crazy plans, based loosely on the Haynes design, lose interest very quickly when they realise how much extra work is involved and how hard it is to redesign the front suspension.

I do recall a similar project, but the guy was using a mondeo V6 in a transverse position, again based on the Haynes design. The chassis was such an ugly monster, suspension totally butchered and the engine was so far forward I doubt it got very far. He certainly stopped posting on here. Its just not really in the spirit of a Lotus Seven copy.

[HandyAndy]

I do recall a similar project, but the guy was using a mondeo V6 in a transverse position, again based on the Haynes design. The chassis was such an ugly monster, suspension totally butchered and the engine was so far forward I doubt it got very far. He certainly stopped posting on here. Its just not really in the spirit of a Lotus Seven copy.

If its the same project that I recall, I supplied the chassis for that build, after quite alot of work reworking the chassis tubes to the builders wishes it was / is a shame it came to nothing.
I,m all for people trying something different, but as Deezee says, sadly most that do tend to lose interest & the project fails etc.
Tho, i,m not convinced that a 4x4 seven style car is the way to go ( INMHO), as the idea in my opinion is for a well balanced car that can be driven & controlled with delicate "right foot" use to be JUST on the point of the rear end breaking lose in a controlled fashion so to speak:cool:

But, all just my own opinion of course :)

cheers
andy

[twinturbo]

I do recall a similar project, but the guy was using a mondeo V6 in a transverse position, again based on the Haynes design. The chassis was such an ugly monster, suspension totally butchered and the engine was so far forward I doubt it got very far. He certainly stopped posting on here. Its just not really in the spirit of a Lotus Seven copy.

your thinking of correls zetec 4x4 build..

I am still waiting for a progress update

http://www.haynes.co.uk/forums/showthread.php?t=3607




I have all the parts spare to do 4x4 stuff, but it is a major undertaking especial on a RHD car as the transfer box & prop encroaches on the drivers side compartment.



I would build a mock up of the front frame area and see how the diff, shafts, rack, hubs, suspension, etc go together. If you get a good solution then work on from there.

Remember that the 4x4 front geometry is different to the 2wd so you will have to try and tweek that too.

TT

[robo]

4X4 and why not??????? If I had the time I would have a go at that. Anyone who has driven a tt 4x4 sierra would understand:) :) . Its not about whats best or lightest or fastest its about personal choice. It can and should be done with the help of the forum just to add another flavour to the roadster. If would be kin brilliant. Certainly no wheelspin off the line:D I have all this stuff here in the yard I might just lay it out in the mule to see how it all looks.

Bob

[waynes world]

How do all, i do know that this would not be for the purist of 7 style cars, as it is far from that, am i so far from a purist you would laugh at some things i have built, well half built, i have all the time i need, no rush and knowing me i would sell it not long after it was running, i do these things and enjoy the build more than anything:D ,so


i was wondering what alterations i would need to do to a chassis and as i have the build book here, i am willing to build a chassis from scratch myself, not that i have a bloody clue LOL, therefore modify one.

After all the thought i will still be going Ford V6 gear, gong to get what i need and lay it out and measure up toward chassis plans if need be build my own death trap:rolleyes: LOL

Seriously though, i dont mind a bit of head ache and love to learn new things.

I hope when i get started i can rely on you guys for guidance as and when i need it which i will, and not get TO slated for it if and when it goes wrong;)

[twinturbo]

IIRC the transfer shaft from a DOHC 4x4 unbolts from the sump. which may be helpful.

TT

[alga]

A friend of mine is building a vaguely-sevenesque (very large) roadster with a GM v6 and Sierra 4x4 running gear. Check out the pics for ideas and inspiration. http://www.locost.lt/viewtopic.php?f=2&t=64&start=120

[twinturbo]

A friend of mine is building a vaguely-sevenesque (very large) roadster with a GM v6 and Sierra 4x4 running gear. Check out the pics for ideas and inspiration. http://www.locost.lt/viewtopic.php?f=2&t=64&start=120

So he's gon for full sierra track width?

TT

[alga]

Yeah, I think so.

[snapper]

It's been stated before in this thread and I will repeat it.
The 4x4 transfer box on the rear of the gearbox sticks out to the right as far as the bell housing edge and the drive shaft has to pass outside of the bellhousing.
It will encroach a long way into the drivers side, you will need to push the whole engine train over or angle it quite away, I would suggest mocking up the chassis with the engine and box before any serious welding is done.
I believe the work required is more than just modding a chassis.
I would start with a basic outer frame and no tunnel in the early stages.
Interesting project but not one to makeup as you go along

[twinturbo]

it may be worth going for a full wider car, i know some purists don't like it but it would give more space, especially in the tunnel
.

TT

[snapper]

If you were building a left hand drive car the problem would effectively go away leaving only the passenger side compramised

[robo]

I was in the 40 foot man cave today and found an mt 4x4 box. There is a shit load of man things in here.

http://i1116.photobucket.com/albums/k577/mypickys/000_0184_zpsc12396cb.jpg

Its 23 inches from the face of the bellhousing to the lump on the side of the box.for the front prop.
http://i1116.photobucket.com/albums/k577/mypickys/000_0185_zps4c021c66.jpg

That means the the only bit of chassis that needs altering is tt1,tt3 and tt4 as this bit of the box is so far forward that it wont get in the way of your legs. The prop by the time its along side tt3 is back inside the geartunnel so wont interfere with the pedals so really its not at all hard to deal with this end of the conversion.

Bob

[twinturbo]

awwwwww, A nice little MT75 4x4 Box.. Lovely and light.

TT

[robo]

This guy has gone some way towards the 4x4 thing http://www.super7thheaven.co.uk/

Bob

[Talonmotorsport]

Or you could just phone Dax in Harlow and ask them about their Rush Quadra which they produced in 1998 which used Sierra 4x4 running gear and talk to them about how they got round a few problems.

[twinturbo]

they still have it on their product list.