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Forum: Model A (1928-31) 05-07-2021, 10:09 AM
Replies: 101
Views: 18,571
Posted By johnneilson
Re: Anyone run a Lion Head

Something like this?
Forum: Model A (1928-31) 05-06-2021, 10:25 PM
Replies: 101
Views: 18,571
Posted By johnneilson
Re: Anyone run a Lion Head

I guess that explains the 25"hg vacuum on the manifold...

J
Forum: Model A (1928-31) 05-05-2021, 11:03 PM
Replies: 101
Views: 18,571
Posted By johnneilson
Re: Anyone run a Lion Head

Tim,
I am pretty sure the motor doesn't know if the air is passing up into the manifold or down. That said, you might be on to something with the older technology up-draft carbs vs the later down...
Forum: Model A (1928-31) 05-05-2021, 04:43 PM
Replies: 101
Views: 18,571
Posted By johnneilson
Re: Anyone run a Lion Head

Tim,

Your assumption is basically correct, however the improvement capabilities/gains can be limited if not all the modifications are made. ie. higher compression with larger valves and more cam...
Forum: Model A (1928-31) 05-05-2021, 11:47 AM
Replies: 101
Views: 18,571
Posted By johnneilson
Re: Anyone run a Lion Head

It has, in a few different heads.

What you need to keep in mind is that the Model "A" engine is different.
B/S ratio, cam timing, ignition etc.
There is no free lunch when you start making these...
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