MTFCA Forum

Ok, I have 3 options for the engine I am putting together for the speedster.
Bosch front plate new distributor
Bosch DU4 magneto with front plate
distributor that mounts in timer cover

Since I am now getting ready to assemble my first T long block the question is:
Can you change the front cover after all is together if I decide to change my mind later. I am leaning towards the DU4 but keep questioning myself as I have never run a magneto. I am comfortable with the distributors.

The timing cover is not a difficult component to replace later on down the line... once the radiator is removed! . I am all for original performance accessories, but feel they should solve problems... not create them.

There are plenty of engines running Bosch mags that perform very well and are reliable too... there is a limited amount of support should your system have issues (your local parts store won’t be much help). The high tension mag ignition setups by far have the most wow factor

The front mount distributor resolves the repair parts availability issue, and the design couldn’t be more reliable as there really are no moving parts. Issues here are limited to a accessibility during adjustments

The Bosch front distributor plate is my personal favorite. The gearset is internal to the engine, and not dependent upon grease pack. The 009 distributor head is a relatively modern design and is well supported by the VW world. The main advantage beyond all others... is the integrated centrifugal advance mechanism. Not to mention the readily available electronic points replacements, high performance racing ignition options, and even tunable rev limiting distributor rotors

I think you were reading my mind. As I stated, I am more comfortable with the distributor. I have plenty of spare parts for the mag, but like all the perks u mentioned about the distributor.

If you drive mainly by yourself, I think there is no good or bad choice so long as you are happy. If you tour much or plan to tour much, you might want to run what most everyone else is running, which is typically a stock system, so that when you break down, a dozen guys will stand at the ready with spare parts for you, within minutes of your break down. You likely won't even be late to lunch.

I periodically have folks break down near me around Yellowstone. Generally, I have what they need (if their car is stock). When Tim Moore burned a rod, I was able to put him back on the road pretty quickly with his pal, Ross' help over-nighting a rod to us. Once we fired up his car, his distributor danced like a hula doll in the back of a '57 Chevy. Couldn't help him with that and he had no time to waste getting on his way. A set of coils or timer would have been no problem and taken no time at all. Too bad.

As far as being comfortable with something, I encourage all Model T owners to know and understand the original ignition system to the point that they ARE comfortable with it. At least that way, they know what they're giving up when they alter the car and are making their choice from a knowledgeable position, not out of fear or misunderstanding.

FWIW.

You also have to pull the pulley forward so the front plate can be tilted out past the end of the cam shaft (at least with the large pulley, not sure about small one).