1970 Alfa Romeo Junior Zagao

[Patriq]

This is my 1970 Alfa Romeo Junior Zagato.

It was bought in august 2005. It was immediately placed in a museum for a year. Suited me fine - having it stored and looked after in a warm dry place for a year.
It was registered the day before my wedding and used at that occasion and for a short period there after.
Ignition soon failed and car ran generally poorly.

I choose to go for MJLJ and spent a year or so sorting that out. After I had ignition I turned to the engine. Realizing compression was low on several cylinders. So engine was completely overhauled, carburettors also. This took me two years or so.

Car has recently been registered again and run on dyno to set the carburettors.

Engine is a 4cyl 1750 engine with non-original pistons. They have been modified for larger inlet valves. I don't know what pistons are and what compression is at the moment.
Cams are CB's: inlet AR 135 332 C, exhaust AR 120 314 C.
Manifold is non original, but unknown.
Carburettors are 45 weber double sidedraft.

Dyno resulted in 138.5 bhp. It should be able to result in more, and we suspected maybe compression wasn't as high as could/should have been. And the performance of the manifolds is also unknown.
Unfortunately rear calipers stuck and was on and off during the sessions - also when I drove from it. So I will have to do something about them.

Trigger wheel for the MJLJ is a rebuilt dizzy with 72-2 wheel. Original sensor from the Ford EDIS couldn't read the small teeth - so instead a sensor from a Mazda RX-7 dizzy has been used.

Module for a rev.limiter has been added and also a water temp sensor that both adjust ignition from start up to warm with -2 to +3 adjustment from zero to 110 dgs celcius.

Run on dyno:
http://www.youtube.com/watch?v=I53ZY2nJEto
http://www.youtube.com/watch?v=iWd4vRbOc_E

[Patriq]

Some more pictures of the engine etc.

[Funky Diver]

Alfa really do make some of the most beautiful cars. Very nice bit of kit you have their matey

[Patriq]

Thanks !

Yes, very pleased with it. Being able to at last drive it, since it's been under overhaul for several years.

[NITROPIXIE]

It looks wonderful patriq. Definately something different.

Although it doesn't compare i had an alfa 145 cloverleaf which was fairly rapid and goods fun to drive, looked a bit of a dog but was mechanically sound.

Have you got a guard for that triggerwheel?? Otherwise you could have a finger like mine, lol. Checkout http://www.autosportlabs.org/viewtopic. ... 33&start=0 on the post from the 10 Nov

[Patriq]

Thanks !


I haven't had a cover made yet. I'm trying different solutions. Since the wheel extends beyond the flat base under it - I have to conjure up something that allows it to sit securely at a distance from the wheel but still attached to the dizzy.

[lindsay_palmer]

Can anyone tell me where I can get a throttle position sensor like the one used in this system?

[Patriq]

Can anyone tell me where I can get a throttle position sensor like the one used in this system?

Hi!

I have since sold. By the time I sold I had just finished preparing a 36-1 trigger wheel for the crank. Whether the new owner fitted this, I don't know. If I know him he has mounted a standard dizzy.


I mean to remember I bought minel here: http://trigger-wheels.com/store/contents/en-uk/d10.html
At least they stock it. They have other useful items as well.

[lindsay_palmer]

Can anyone tell me where I can get a throttle position sensor like the one used in this system?

Hi!

I have since sold. By the time I sold I had just finished preparing a 36-1 trigger wheel for the crank. Whether the new owner fitted this, I don't know. If I know him he has mounted a standard dizzy.


I mean to remember I bought minel here: http://trigger-wheels.com/store/contents/en-uk/d10.html
At least they stock it. They have other useful items as well.

Thank you very much.