131mirafiori forum

We continue here with the comments in the post mirafiori76, Thanks.
Hi, after doing several tests with clocks, pumps and valves to discharge the oil pump, I managed to have a maximum pressure of 5.5 bar, hot.
A 1.000rpm, hot, is on about 2.75 bar.
Pressure remains high but is acceptable?
Another problem has appeared to boot up the engine, the compression of the cylinder 2 from escaping from the carburetor.
I removed the valve cover, I checked the adjustment of valves.
The admission number 4 of this ride.
The problem is, I can not downgrade because there is more valve stem which is lower, and the bucket is only tread cam.
Solution: remove the head and replace the valve, 0.30 mm or lower the bucket

 its difficult to make out exactly what you are saying, valve seat recesion was a problem on these engines long before unleaded fuel came along.more to do with the high RPM they ran at.  BMW e36 M3 shims are the same diameter but much thinner if that helps.

Hi, I was unable to repair the sound for adjusting valves. Lower the bucket of a 8v, I did not cut mine 16v for safety.
Sounds like a big adjustment, not much.
The next repair will try to put the bucket of e36M as strada said.
The pressure remains very high with this watch, the other is acceptable, I'm expecting another mechanical watch to make more prueva.
Upload a short video.
Greetings.

Short video:

http://youtu.be/gymMR5cfYWk

Hi Joan,

I watched and listened to your video very carefully.
To start with the end part of the video: the pressure still runs up way too high. We must be missing something here. Hower, i can't think of anything else there could be wrong. We discussed every posibility. But i will keep thinking of a solution.

Then the sound, or sounds, from the engine. You should really check the valve clearance. By the sound of it, the clearance is way too big. However, the engine runs very smooth.

The sound from the carburators is wonderfull. I remember the roar from mine some years ago. It's louder then any 8V can produce.

Last question: is your car a Stradale with Racing interior, or is it a converted Racing or any other 2-door?

Hello, is a fiat 131 racing, had no budget to buy a genuine abarth as I would like ...
My intention is to leave it as close to a abarth stradale, for now I have the engine 16v, independent rear suspension type abarth, and later have in mind to replace the rear optical group for the first series, I got home about to mounting.
Then replace the dashboard, the door panels for the first series (will be hard to find) I also located stradale rear seats, but they are very expensive!, And finally modify the front suspension by abarth type.
Is all that I have in mind to make time.

Hello, I still have the last part of this series.
Today I left you to try again the car everything in place, everything seemed to be going well, suddenly the sound of the engine changed and lost power, I come home, I removed the air filter, and again the compression of cylinder 2 came out for the carburetor, valve adjust and stay big adjustment tread is back or close.
That is what can be happening? Valve seat wrong? Valve maybe? Now if you'll have to remove the head and check valve that goes with that.
I think it will be a long season in the garage standing this time.
When the day riding head new arrive, I will comment on here about reducing pressure if the dismount or leave, but until that day, which is far, only I can give thanks for the responses and the interes.Gracias.

Hello, maybe this bit of luck, I think I can repair the fault without removing the head, I think I have the hat valve. upload photo.

(http://i43.tinypic.com/2v8gyrr.jpg)

Hi, I found the problem of valve timing. valve seal was broken.

(http://i42.tinypic.com/2i7agat.jpg)