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looking to bobtail

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martyn:
Hi this has probably been asked about previously but with so many threads i cant find it .
Anyway i am looking to bobtail a disco 1 how much is the best to take of whilst not making it too extreme.
What about sva mot dvla etc I'm confused about the points system.
Looking to lift it 2inch is it best to put Castor correction arms and extend brake lines.

I have lifted an R/R 2 inch and it didn't handle very well.

All help appreciated

andyb:

--- Quote from: martyn on January 27, 2010, 21:39:54 ---What about sva mot dvla etc I'm confused about the points system.
--- End quote ---

You will need and SVA as you will modify/shorten the chassis when you start bobtailing.

Other things to consider are the fuel tank and exhaust.


--- Quote ---Looking to lift it 2inch is it best to put Castor correction arms and extend brake lines.
--- End quote ---

Don't use castor correcting arms, they will make front prop UJ angle even worst than just the lift. The two best solutions are redrilled swivel housing or a rejigged front axle casing.

Extended brake lines (flexible hoses I assume) are not a bad idea. I would recommend fitting stainless steel braided ones as they are far more durable and will improve pedal effectiency.

HTH

martyn:
Thanks for the tip on the brake hoses,
I don't understand the tip on redrilling swivel housing or re jigging axle casing can i trouble you for some more info on these.

i ave been reading the landy mags and lots seem to be fitting these Castor correction arms and i thought in my ignorance they were part of what was requ with the lift.
its a pity your so far other wise I'd come downfor a look.

boss:
use the tank from a 90 and just dont fit the rear section of the disco exhaust.

the reason you need the props with the carster corected arms is becasue the prop moves with the radius arms. if you were to move the radius arms and then rotate the axle around to its previous position(castor corected arms) then the UJs will be at funny angles. my bobtail had +2" HD springs with no weight it gave it something more like a 3" lift, props were fine.


is it a truck or a full cab your making?

andyb:

--- Quote from: martyn on January 28, 2010, 19:02:43 ---I don't understand the tip on redrilling swivel housing or re jigging axle casing can i trouble you for some more info on these.
--- End quote ---

I assume you understand how a suspension lift will affect the castor angle on an Land Rover.

The redrilled swivel housing has the holes in a slightly different location such that the castor angle is back to normal without affecting prop shaft UJ angle in the way that castor correcting radius arm can (as Boss has explained above).

The axle casing solution is similar but the ends that the swivels bolt to are cut off and reweld back into a slightly different position so that the castor angle is back to normal. When I do it the casing is internally braced.

I prefer either solution over castor correcting arms as they leave prop shaft UJs at a more acceptable angle. The axle casing rejig also leaves all you axle components as standard.

HTH

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