Live Axle prop clonk?
Discussion
As the title really, one up hooning fine can't notice anything, 2 up & hooning round roundabouts or on fast start from standstill can hear what sounds very like the prop banging the tunnel.
Ford quaffe lsd dif & (I think) ford axle too, will conform tommorow.
Is this a common thing? is rising rear ride height a cure (on freestyle avos) or much bigger work needed? (mate had similar on his westie & had to swap over the prop flanges & it was a heck of a job to sort it all, bit scared mine will need the same)
Ford quaffe lsd dif & (I think) ford axle too, will conform tommorow.
Is this a common thing? is rising rear ride height a cure (on freestyle avos) or much bigger work needed? (mate had similar on his westie & had to swap over the prop flanges & it was a heck of a job to sort it all, bit scared mine will need the same)
First thing to check is that the gearbox mount (and engine mounts & rear suspension bushes, for that matter) are in good condition, securely fixed, and that the clearance is equal either side of the propshaft flange within the tunnel. There's not a huge amount of clearance, so if everything's not as it should be, contact can occur when you're putting a lot of torque through the drivetrain, as under a standing start.
Hi Iguana,
If its not the engine/gearbox mounts, I reckon it could be the clearance on the side of the tunnel where the nose of the Ford axle is. The English axle nose is slighly offset and when fitted to a Caterham, the back of the tunnel has to be widened to accomodate the fitting. I expect that it hasn't been widened enough and when you have two people in, there is a contact under hard acceleration or load.
Its an easy job to fix (with a hammer and block of wood....)
HTH
T
If its not the engine/gearbox mounts, I reckon it could be the clearance on the side of the tunnel where the nose of the Ford axle is. The English axle nose is slighly offset and when fitted to a Caterham, the back of the tunnel has to be widened to accomodate the fitting. I expect that it hasn't been widened enough and when you have two people in, there is a contact under hard acceleration or load.
Its an easy job to fix (with a hammer and block of wood....)
HTH
T
That's a typical problem with cars that have been shunted. Jack the car up, reach underneath and see if you can locate a weld running the width of the car just behind the seats. If you can, chances are someone hasn't bothered to line the two cars up before stitching them together.
Hope this helps
Hope this helps
rubystone said:
That's a typical problem with cars that have been shunted. Jack the car up, reach underneath and see if you can locate a weld running the width of the car just behind the seats. If you can, chances are someone hasn't bothered to line the two cars up before stitching them together.
Hope this helps
Hope this helps
Time to go back to the gaywheeldrivers mate 
rubystone said:
That's a typical problem with cars that have been shunted. Jack the car up, reach underneath and see if you can locate a weld running the width of the car just behind the seats. If you can, chances are someone hasn't bothered to line the two cars up before stitching them together.
Hope this helps
Damm, I spotted just that on that clonky old VX of yours, thought it was normal, oh bugger! Hope this helps
Cheers for advice chaps, I've had it in the air & certainly looks like the UJ is hiting drivers side of the tunnel. Does seem fairly roomy under there tho?
Pulled & pushed every thing pretty firmly & all bushes seem ok, but are invoices in the stack that prev owner had A frame bushes replaced a few times, so maybe the prime suspect?
Might need a 7 specialists eyes on it rather than mine really.
James Whiting 7s not a million miles away- well recomended?
Pulled & pushed every thing pretty firmly & all bushes seem ok, but are invoices in the stack that prev owner had A frame bushes replaced a few times, so maybe the prime suspect?
Might need a 7 specialists eyes on it rather than mine really.
James Whiting 7s not a million miles away- well recomended?
Despite looking quite roomy under there, with a couple of occupants and under load, I expect the witness marks will be on the driver's side of the tunnel? I don't think its anything at all to do with anything else not being up to the job and having excessive wear but simply not enough clearance was given when the Ford English axle was fitted. When mine was done, the pop rivets were drilled out of the rear of the tunnel (from the cockpit side), the entrance to the tunnel widened with a hammer and then the rivets re-drilled and fitted again.
Cheers
T
Cheers
T
Tango7 said:
Despite looking quite roomy under there, with a couple of occupants and under load, I expect the witness marks will be on the driver's side of the tunnel? I don't think its anything at all to do with anything else not being up to the job and having excessive wear but simply not enough clearance was given when the Ford English axle was fitted. When mine was done, the pop rivets were drilled out of the rear of the tunnel (from the cockpit side), the entrance to the tunnel widened with a hammer and then the rivets re-drilled and fitted again.
Cheers
T
Cheers Tango I reckon you are bang on the money there chap, yip just drivers side & tunnel has been pretty pushed out by it banging already. Cheers
T
Gunna be fun to try & make it fit right with my newly re-located & taken off the runners & mounted all the way back tillet tho! ;(
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