Rear chassis dimensions

[pmessling]

Can any one with a bare chassis or easily accessable under side be able to give me the dimensions of the rear of the chassis under the diff area as i've illustrated on the chassis picture.

Thanks Peter

[FarmyardPants]

Are you building a jig on the sly? In which case we can expect many more such questions

[pmessling]

Unfortunately not.

Its to create a lifting beam so that i can lift the back using one jack lifting the car evenly then place axle stands under in one go instead of lifting one side at a time, or using my drive on hydraulic ramps which are great but not much good as they get in the way when using axle stands.

Less stress on the chassis and twisting of the body. Always makes me cringe when hearing the body creeking

Can lift it on the rear chassis at present but its very uneven and the exhaust gets in the way so the lift beam should help and speed lifting the car up.

Thats the plan any way.

[Luckyone]

I’ve got an exposed rear at the moment, it just the distance between the two lower box sections you want?

[pmessling]

Inside rail dimension and outside of rails please.

[Luckyone]

Ok no problem, I’ll be home in a couple of hours so will check that for you.

Are you planning on making something that will sit under both rails at the rear then? Just from memory the rails kick up at the rear so if you try to jack under them the car can slide forward, but if you incorporated a stop that located on the cross tube it would be ok I guess.

[Luckyone]

41cm outer edges, 32.5cm inner. That's right at the very end / back. 

Its 31cm just infront of the wishbone mounts, inside measurements.

[pmessling]

Yes both rails. Its all an idea at the moment but feel be worth the effort. I can't remember about the rails I know it narrows into the middle of the car but I'm sure I can sort something out to stop it moving.

[pmessling]

Thanks for that. Once I'm back at work I'll see what material is about and make something and go from there. Just need to measure my jack for the size of the boss

[Supateg]

Thanks for the measurements; saves me getting under!
Last time I jacked the back up (Trolley Jack) I used a 3x2 timber across the chassis with two 3x2x4" long noggins on top to give clearance by the exhaust. At the time I was thinking I should make a steel one up, just laziness on my part as the materials are easy to hand.

Oh, Jacking up poised no problems and the car was stable.

[Luckyone]

Mine was covered in waxoyl when it slipped, a nice clean chassis & rubber pads would stop any movement also I guess.

There is so little clearance getting anything under there on top of the jack may be a bit of squeeze, but there’s always driving on to blocks of wood first etc.

I’ve got a pit so don’t generally need to jack it up but it makes it a right pain when I do!