12 replies to this topic

[reyhan_285]

So this morning ish I was working on the suspension after giving up yesterday, I got one side out yesterday. Today I was trying to get the passenger front side trumpet out. Basically what happen was I put the cone compressing tool into the hole, and tightened it down pretty far. The trumpet was loose and moving but didn't come out so I kept tightening and checking then I heard a loud bang and found the tool had burst up and let go of the cone and not I cant seam to get the tool to thread onto the cone. So what do i do people i need to get the trumpets changed please help its my second day in a row failing to get anything done on the car. 

 

The car is a mk1 1964 Austin mini as far as I am aware the finer threaded tool worked on the driver side, and the other bar wouldn't thread onto either cone so I used the fine thread on the passenger side too. 

 

Finally where on Earth do I put the axel stands on the rear subframe and where do I jack on the read subframe. 

 

PLEASE HELP GUYS!!!!!!!

 

If you need anything else just ask and I'll let you know.

[bikewiz]

You'll need to replace the cone now most likely. The cone is probably frozen to the trumpet so you may need to take it all out together. Remove the upper control arm and you should be able to get the trumpet and knuckle out. It will be difficult because the cone isn't compressed, alternatively if you aren't reusing the trumpet just cut the trumpet. If you are replacing the cone you'll need to remove the upper control arm anyway.

[carbon]

When jacking up the rear of the car I normally slip the jack(s) just in front of the rear wheel and lifting on the rear subframe just near the mounting on to the rear heelboard. With the axle stands these I usually put towards the back of the rear subframe as insurance.

[Tamworthbay]

If you are fitting new hi Los or have a spare trumpet then as mentioned above you can destroy the existing one to get it out. You can do that by sawing as mentioned but I would also think about using an air chisel or normal chisel. They key thing is to have the front jacked up and supported and make sure the upper arm is as low as possible. That way the cone is at its least compressed.

[reyhan_285]

I think I'll take the control arm out thanks guys, also the trumpet is free from the cone it moved when I compressed the cone. Do I HAVE to replace the cones? If I do, do I need to do both sides on the front? What about replacing all the cones with the blue springs from minispares? How do I remove the upper control arm? (Sorry I know lots of questions)

[minimender]

Don't cut the cone it isn't a safe thing to do, Don't take the top arm out unless cone is compressed either !

 

Jack the wheel off the ground, You can then break it with a long bar and a big hammer so as you are not close to the thing when it gives way, I have had to do this on more than one occasion but it takes a big hammer and a bar preferably with a sharpish point, it will go with a bang so don't be too near it when it breaks, It helps to drill some holes in it first, two or three with a biggish bit will do

 

Good luck with it and take care.

Edited by minimender, 16 February 2014 - 05:16 PM.

[reyhan_285]

Would you say 6.5mm holes will be big enough? Should I drill all the way through both sides of the trumpet? I was thinking drilling straight through perpendicular to the body, one at a kinda 45 degree angle all the way through and then one at 90 degrees from the 45 degree one how does that sound?

[minimender]

Would you say 6.5mm holes will be big enough? Should I drill all the way through both sides of the trumpet? I was thinking drilling straight through perpendicular to the body, one at a kinda 45 degree angle all the way through and then one at 90 degrees from the 45 degree one how does that sound?

 

Just a few at that size in a small area perhaps in a line, you are trying to weaken the cone so it breaks easier, they are quite brittle and should split into pieces

[bikewiz]

Don't cut the cone it isn't a safe thing to do, Don't take the top arm out unless cone is compressed either !

 

Jack the wheel off the ground, You can then break it with a long bar and a big hammer so as you are not close to the thing when it gives way, I have had to do this on more than one occasion but it takes a big hammer and a bar preferably with a sharpish point, it will go with a bang so don't be too near it when it breaks, It helps to drill some holes in it first, two or three with a biggish bit will do

 

Good luck with it and take care.

I disagree. The car is a '64 the cones are most likely collapsed unless they were replaced which doesn't appear likely because it has the older style center. If you remove the upper arm it will fall to one side and relieve pressure on the trumpet. If you go drilling holes and banging on it you have no control on when it lets go, if it's corroded enough it may break when he's drilling holes in it. So he'll be under the wing with a drill in hand when the bang happens. Your suggestion is basically the same also he's cutting the trumpet in a very crude way.

One way or the other be careful.

[reyhan_285]

The trumpets are not corroded it's weird they look in really good shape for the age, I'd guess they were changed at some point. On the cone front they have not collapsed, I can't even get them to compress by hand I have to use the jack to get them to compress at all.

On the cones guys are the cones on the rear interchangeable, I was thinking bung the two front cones onto the rear and rear to the front would that work seeing as the rear ones don't need the tool I could swap them and if the thread on the rear is good then I don't have to order now cones .

[Tamworthbay]

If they are that old its false economy not to change them. They only last 10-12 years before they begin to degrade. The older ones are better but as they were the old thread they must be getting on for 30 years old now.

[reyhan_285]

My thought was I'd change them in the summer when I take both sub frames out anyway, and I'll probably have more money to spend on four cones then too, rather than getting only two now.

[reyhan_285]

Just to let you all know I got the trumpets out there was no loud bang just drilled holes then connected the holes with a really fat chisel worked a treat thanks guys. Once they were out I tried to get the cones out, however I couldn't get the upper control arm bolt screw to come out, it just was stuck I did rotate but not moving can someone help me either get it out or would it be easier if the front sub frame is out?