michaelb wrote:
So after following this topic for the past few days I was starting to be a little concerned about the mods I am doing with my current project. So I did the right thing today and spoke with an engineer and asked for his advise on my mods to a 1978 mini clubman.
1/ I have replaced the seats with later model mini type,
answer - should be no problems as long as they use the original brackets and mounting points. Only need to be engineered if they require a new mounting bracket, welding or cutting.
2/ So I am also fitting a Supercharger.
Answer - Because it is a later than July 1976 mini it must comply with ADR 27A, which therefore means I will need to have the RTA measure the exhaust emissions. Hmm could be interesting, but engineer advised this is not too hard to pass and I will need to obviously have the engine setup and "detuned" to pass this test.
I also need to advise of any upgrades to teh brakes to compensate for the extra power. This is OK as I am fitting 4pot calipers and new disks.
3/ I am fitting 13x7" wheels
Answer - This is a problem, The RTA will only allow +1 inch wider than the standard fitment for my car. So on examination of the tyre plaque I find it states the car was fitted with12x5" wheels. Probably means I can only fit 13x6" legally.

Can you PM me your engineers details please. I have some work for him.
Also have you checked the ruling about CAPACITY to WEIGHT restrictions?
Turbo or Supercharger is classed as 1.6 to 1 on capacity to weight.
That means a 998 is 998 x 1.6 meaning it's approx 1.6litre. This is a prob because a 70's mini never came with a 1.6Lltr.
Also don't confuse the CAPACITY to WEIGHT with POWER to WEIGHT. By law you can fit a 1.3ltr Hayabusa motor to a mini as long as it's engineered bexusse the CAP to WEIGHT matches.
I'm happy to be corrected on these by the way
You are right on the emissions etc though. I thought it was pre 1972 that didn't need emissions test. Everything after needs one. Many 1976 models had the charcoal canister for emissions. Even though is was a load of rubbish as they produced more pollutants than no canister or something like that.
I presume you are Newcastle area?
Thanks,
Pete