My car has returned to the body shop, he is going to repaint it completely, I hope this time the result will be great.
October 20, 2017, arrival of 4406 at my home in Alsace after a 400 km journey from Belgium:
On October 13, 2023, exactly 6 years later to the nearest week and after a move and some health problems, the first turns of the wheels on his own:
What was the steel tube size, thickness, and shape used to stiffen the frame? Did you replace the frame rear of the firewall that supports the engine. Thanks
@rmccall posted:WOW! Sure looks WAY better than it did when I owned it!!
Nice work!
Ron
If you have some informations on his story, I'd be interested.
What valve spring did you use? I am wondering if I need a more stiff spring?
what did you use for the chassis reinforcement? I have been contemplating doing the same thing.
It's almost finished, there are a few details left but it runs
nice 👍!!!
and you got an impressive amount of fire depression material on board ‼️
I didn't want red fire extinguishers, I wanted chrome ones and I only found very small ones, 500 grams or a little too big, 2 kilograms.....
4406 is on the road and is almost complete.
The engine is already pushing strong although the carburetor tunning is not yet complete.
I find it very comfortable for a sports car and very stable at high speed, it does not deviate from its trajectory in a curve when it encounters a bump.
To save a little space and above all to have lateral support, I replaced the original seats which I carefully keep on a shelf with slightly modified leather Miata seats.
But I still have one problem to solve, the brakes, they work but the travel of the pedal is variable, sometimes very short, sometimes it lengthens.
My braking system is now very simple, I removed the brakebooster, the shuttle valve and the pressure limiter and I installed a double master cylinder with mechanical distributor.
A l'avant j'ai les étriers d'origine et à l'arrière des étriers Brembo à 4 pistons.
I've purged, purged, repurged, in vacuum, pumping the pedal and I'm pretty sure there isn't a single air bubble left in the system.
I was able to see that when the stroke lengthens, it is the rear circuit which is at fault, as if the pistons had moved back and the play must be made up. If I release and press again immediately the stroke is again very short. If there is little time between braking, the travel remains short. It never extends when the car is stationary.
I replaced the master cylinders, refurbished the calipers and all the pistons slide easily. I admit I don't really know what to do anymore.
Put a 2 pound residual pressure valve in the line to the rear calipers. Check the run-out of the rear rotors. If rotors have run-out they will kick the pads back away.
I had thought about a residual pressure valve but I didn't know it existed for the brake circuits. Thanks for the advice.
Did you check the run out on the brake discs?
running true side to side….
Looks like you’re missing the 2lb residual for the front brakes. Without it you’re probably pulling fluid back. I would install one then bleed the brakes again.
I have ordered two 2 pound residual pressure valves for both front and rear circuits on Ebay UK and am looking forward to them. I should receive them next week.
I'm pretty sure the discs don't have any run out because there's no vibrations and the wheels spin very freely when in the air, but I'll check with a dial gauge anyway.