With an RS2000 Mk1 with bubble arches : building a look alike
Is the wheel track permitted to be wider than a standard Mk1 with standard guards with standard wheel track ?????
Jim

Are you relating this to engineers reports and road worthiness? Or more for racing scrutineering?
 
If its road.. the RTA states (see below). Anything further to this will most likely need engineers cert.
"An important requirement for all replacement wheels is that the wheel track must not be increased by more than 25mm beyond the maximum specified by the vehicle manufacturer for that vehicle.
Where non original axle or suspension components are fitted, the offset of the wheel in relation to the axle or stub axle assembly used shall not be increased by more than 12.5mm each side of the vehicle based on the specifications of the axle components used. If an axle assembly is shortened then the track width limit is taken as the axle manufacturers original track dimension, less the amount the assembly has been narrowed, plus 25mm. "
 

Any widening  of wheel base measurements require engineer certificate, Jim. You may have to check on bubble arches as guard extensions that arent fitted from factory will require certificate. I know officiandos will say yes they were fitted from factory (albeit SVO not passenger vehicle) Replicas or Tribute vehicles as they are now called will attract scrutiny by officialdom.Just the fact of needing a certificate for a pinto conversion is a pain because they were never built in Australia with a pinto in them :(((

Hey Laurie,
I was just reading a few books, in the book escorts down under,it says in1974 they import the first batch of rs2000 in mk1 bodys ,(obvious to race) but it doesnt say if they
were bubble arches though, I went to have a chat with an engineer this arvo but he was tied up on the phone ,hope I catch him later on.
on the tech side you mention, I would like it to be right and law biding

Depends on the use of the vehicle.
For road registered use this would default to the original build codes/build date/specification for that exact vehicle.
For rallys (not road registered) would default to the conditions/class of entry.
For Escorts generally any bubble arch is added simply to permit the 7" or 8" wide tyres and still maintain the tyres well within the confines of the body work. Without the guard extensions the tyres would foul the original panel work and protrude outside the body.
However I have seen race teams significantly increasing the track width by completely reengineering the width of the suspension to improve handling and to fill out the the guard extensions.
Might be nice for a race car, but will cause a trauma for a road registered vehicle, with little if any advantage, execpt for perceived appearance.
 

 Sorry to get off topic a little but just touching on something Laurie said about the mk1 needing a cert for a pinto install, is that correct for NSW? the mk2 must be OK cause ive got a mate who breezed through a blue slip and rego after a pinto install
 

I thought you were ok to do a 2litre in a Mk1 as long as you had the Mk2 running gear like struts, brakes, sway bar etc. As everyone knows both cars share the same platform.

The largest engine which was available in a Mk1 in Australia was the Twincam so 1598cc or whatever they were. So the 2litre falls in the size limits easily. However the RTA states you should now still check with an engineer.
 
Theoretically if your Mk2 isn't a 2litre it should be the same, as long as you had the 2litre brakes, struts, sway bar etc it was fine. Just because you had a model come out witht hat engine doesn't mean the rest of the car is up to handling that engine with standard suspension, brakes etc?

My last Mk1 had a 2litre with twin sidedraughts and both were engineered. So maybe it now is required.
Either way it wouldn't be hard to have engineered if RTA was persistent you needed it done.

Yeah thats what I thought to I do have a mk2 front end in my mk1 so fingers crossed, they did import a bunch of RS2000's from germany but not many and I guess most of them ended up being used for racing rather than the road
 
 

From memory they imported 25 so they could be run at Bathurst.
I did know of one that was a road car.
I think the same was done with mk2's as well.