downdraft carb

Clifforddward states the electronic ignition does not add power to an engine which I agree. Electronic ignition does, however, provide continuous repeatable ignition cycling whereas the gap conditions in a conventional point ignition system are continously changing due to wear and point surface erosion. Once there is a noticeable change in engine performance, the convention point system has to be manually reset.
 
Dave in San Antonio: Thanks for you extensive comment. I suspect that the majority of MOD A owners go through a series of philosophical perspectives regarding the 'original' vs 'modified to make more reliable and comfortable' question. If someone is showing their car in competitions it makes sense that they are meticulous about originality. If they live where there are a lot of hills and have the car for fun they probably want more power while still retaining as much original 'look' as possible. Each has to find their own level of happiness with modification. Mine came to me with speakers built into the kick panels...which I immediately removed and replaced the kick panels....but..hey...some people feel strongly about having music on the road. I do not like being a hindrance to traffic that is following me up a hill and can not safely pass....and that descrfibes a LOT of the area around where I live in German wine country. I love driving my "Henry" at 60-70 Kmph through the countryside...but sometimes I feel discourteous when there is a line of 10 cars behind me. For that reason I seek more power. I want people to enjoy the history and period elegance of a classic car sharing the roads with them without becoming irritable about being stuck behind me for 5 km until the next safe passing area.
 
I am new to Model A's but reasonably knowledgeable on the early FH V8's. It is a common
practice to mill the heads on a V8, to reduce the combustion chamber, thus increasing the compression ratio which enhances the power output of the engine. Great care must be taken to assure, after milling, that there is enough clearance for valves and spark plugs. Could this approach be applied to a stock Model A head?
 
47topless said:
I am new to Model A's but reasonably knowledgeable on the early FH V8's. It is a common
practice to mill the heads on a V8, to reduce the combustion chamber, thus increasing the compression ratio which enhances the power output of the engine. Great care must be taken to assure, after milling, that there is enough clearance for valves and spark plugs. Could this approach be applied to a stock Model A head?
Click to expand...

Yes it could be done but by the time that you get the chamber small enough to get the compression up the valves have run out of room to flow very well. Also add to your great care list to make sure that you have not lowered the head through milling enough to run out of threads on the studs :eek:
 
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