[Tigers] Brake & Clutch pedal ratio modification

[daniel doornbos]

All, I sent the question last week about the stock 4:1 to 6:1 pedal ratio.  Tom H as always has a great solution ready to go and he sent his work details.  Tom's solution is great and well-engineered for those not wanting to alter the firewall.

I don't mind the firewall modifications and since my car is a body only in primer the firewall modification is easy.  Don't look at the photos if you don't want to see the cutting of a Tiger.  https://photos.app.goo.gl/aw8dta9RoA4uwKRk9

A quick run down of changes.

  *   stock pedal ratio is 4:1, clevis pin hole is 3" from pivot and the pedal is 12" long.
  *   Needed to drill a new 1/4 in hole 2" from pivot (1" higher than stock) for the clevis.  I did build up and grind smooth some extra material with the welder to match the thickness
  *   The plan is to use the standard pedal mount top hole in the firewall.
  *   Once the pedal was drilled the pedal bracket needed to be shortened and the lower mount hole moved up by 1" so I trimmed, drilled and welded the braket to clear the higher clevis pin
  *   For the firewall I've cut a piece of steel plate and traced the stock holes to overlay on the firewall
  *   I cut out two slots in the firewall leaving the perpendicular reinforcement braces to allow for moving up the MCs and pushrods.
  *   I've ordered a 0.7 clutch and 15/16 Brake (Datsun) MC.  Once I have those and am sure of the mounting hole pieces I'll drill the plate bolt it in place and weld it into position.   Then I need to sort out the pushrod pin length and retention.

I'm really happy with how the work went over the weekend.  Please give any feedback if I'm overlooking something critical or if anyone has done anything similar.

Also in digging through parts I was trying to decide if I should keep or trash parts.  Specifically, any reason to keep the original Master Cylinders, Exhaust manifolds, or generator?

thanks for looking
dan

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