By Petes mk2 August 15, in Project Discussion. Hi everyone. Since starting work on my car I have a few questions that you may be able to help me with. The car has only 8 inch brake drums on the back. Would an upgrade to 9 inch drums be of any benefit as motor is being rebuilt so will produce more hp.
I understand it is not that hard to do. The doors have quite a bit of rust on the inside at the bottom. What is the best way to treat this. Petes mk2 17 posts. Nominal 6 posts. Tiger Tamer 4 posts. Rear brakes don't much of the work so probably not worth upgrading. Doing that would push you into needing lvvta certification, and I think you are going for stock-ish for the rest of the build.
I have some doors in a similar state to yours. Then make a water tight trough thing just big enough to place the bottom of the door in. Then fill it with a chelation rust remover like Metal rescue or Evapo-rust, enough to cover the seam.
Then leave it for as long at it needs to make the rust go away. It doesn't eat the metal, so you can just leave it for ages. Later,once the door is painted, probably put some cavity wax in there too. Have run 9 in rears in a period spec Mk2 rally car and the biggest improvement made was with the linings, not the size of the drum. Ended up with disks anyway, rear shoes don't last long and they do a lot more work than people think.
Thanks for advice once again. Have removed drive shaft from diff flange and noticed a small amount of oil seep out. Has not continued but is this normal or do I need to replace seal. It is a Timkin type diff. Also how much play should there be when you turn flange by hand.
