Looking at my distributor to find a problem and I see.......

[mark030358]

That it is a type 41189E. The car is a sprint fitted with dellortos and I expected to see a 41189A model. Also the bob weights are marked 10degrees. Any body have any idea if this is a correct distributor for a sprint? Have asked Brian and he thinks they maybe for a weber model car.

Alos took some interesting readings on an oscillascope and dwell meter. At the time the readings were taken I had an aldon ignitor fitted. The upshot is it gave a dwell angle of between 44 and 48 degrees (accurate to +/- 3 degrees) but the scope showed a duty cycle time of 10% ish. (this duty cycle is the ratio of conducting pulse and non conducting pulses, similar to dwell). Anyway I will try and post these results on the yahoo site and I would be interested in anyones comments.

cheers
Mark

ps all this to find out why I have poor running at less than 33ish mph

[mark030358]

sorry but cannot upload pics to yahoo will email them to whoever is interested cheers

Mark

[mark030358]

I also forgot to add that if I inject a signal into the tacho with an external pulse generator then the tacho works 100%. (see my earlier posts). I definatley belive my poor low speed running is due to an electrical issue.

cheers Mark

ps asked this beforebut did not get an answer so, can you run a lucas gold coil with point?

cheers
Mark

[type26owner]

Mark,
Is that dizzy a 25D4? Does it have the vacuum retard? What part number Ignitor did they sell you. There is a listing discrepancy between the Pertronix and Aldon p/n on the websites for the 23D and 25D. Only 40 degrees of dwell is way off.

The engineers are here in California. I'll call for help tomorrow if you'll answer my questions. I want to harass them a bit to introduce the Ignitor II for our dizzies anyways.

Be aware the magnet sleeve that fits on the mainshaft under the rotor can lift the rotor enough so it rubs on the carbon wiper boss of the cap. It will short out the rotor in as little as a few minutes or take months.

[types26/36]

That it is a type 41189E. The car is a sprint fitted with dellortos

Mark,
Just pulled the distributor on my Europa (Big Valve on Delloto's) and guess what! its 41189E. Its the original distributor, same spec engine as your Sprint so your distributor is correct.
I'll get round to looking at my Sprint next week but I think it will also be an "E"
Brian.

[Stuart72Sprint]

I'm interested by Keith's comment re having the correct version of the Petronix. The local supplier sold me a LU-142A for my 72 Fed Sprint. There is no vacuum advance or anti smog stuff on the Strombergs, but I believe the dist is original. Is this the correct version? If not, am I going to create problems by running it?
Needless to say, I am getting the usual "bouncing tach" problem, but that is already well documented....

Stuart

[types26/36]

There is no vacuum advance or anti smog stuff on the Strombergs, but I believe the dist is original. Is this the correct version?

Stuart,
Not quite what you are refering to with the "vacuum advance" the carbs or the distributor.
No Twin Cams had a "vacuum advance" (excluding some very very early cars)
The federal and cars destined for some european countries had a vacuum retard capsule, I have no experience of these but from what I have read, blanking of the retard device and reseting the timing to + - 10 degrees BTDC (from 5 degrees ATDC) improves the performance.
Brian.

[types26/36]

[
I'll get round to looking at my Sprint next week but I think it will also be an "E"
Brian.

Mark,
Its an "E" as well.
Brian.