I'm new to this forum. I have a 73 RX3 that I had been keeping stock up til now. The 12a twin dizzy in the car now has a seized apex seal. I am going to upgrade the car as part of repowering it.



Most of the rotary heads in my neck of the woods are RX7 fans. Not many RX3's to be found. Ive down graded my planned from a 13bt with a ford 9 inch, to a much more simple conversion.



I stumbled on a older 12a bridge ported engine with 6 mm apex seals. This engine has been overheated but between this motor and the one in the car I'm hoping to build up a good runner. I already have an RX7 diff with LSD. I plan to change over the LSD and disk brake system to the RX3 dif.



I'm looking for advise on the 6mm apex seals and suspension upgrades(shocks, springs sway bars etc.).



Pics of the car attached.



Thanks

very nice project

12A bridgeport nitrous.. simple and tons of power at the cost of a nitrous bottle fill.

I'm planning on using the 45 twin webbers mounted on the car now. It performed very strong with the stock 12a (much better than the 600 Holly I tried before). I understand the 45 webbers will work fine with the bridge port. Would this set up work with nito as well???

6mm apex seals? I have never seen them or heard of them.



Nice project and welcome to the forum.

i like it

My understanding was that the original 12a's in the RX3 were all 6 mm apex seals. I beleive they had durability questions. I think I can change over the rotors in a rebuild to a 2 or 3 mm apex seal, but I'm not sure if its cost effective. I think I want to play with this bridge ported core. Rebuilding one of these engines looks like an interesting challange, a good excuse to purchase a few presicion tools and use them. I'm trying to get a realistic idea of the task at hand before I dive into it. Iv'e been through a number of piston engine rebuilds, I don't know anybody who's put a rotary together and had it make power!!



Anybody put your own motor together out there?

Welcome to the forum bud.



I'd kill for an old school RX project car like that.



- Aaron -

Welcome. Your project looks awesome. keep us updated.

Tons of people have, my suggestion is to READ!! Alot! I am still learning new things to this day. Not like I have learned much though. https://www.nopistons.com/forums/pub...1047683785.gif



Good luck.