Final 2F build (1 Viewer)
- Thread starter Rochfort
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- #2
...the drama continues.
DEcided against a 2nd air filter, i just need one good one.
Monster power plant in this distr.
Tarted up the old crankcase...
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- #3
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Bought it for $5 grand because I liked the paint. Some touch ups and it'll be like new...
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- #4
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- #6
1911
chupacabra
What is your ignition timing set at, and what is your elevation above sea level there?
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- #8
...about 8,600 feet above sea level. Haven't adjusted the timing yet. I'm confused about elevation, it's the air pressure that counts, not the O2 level they say. Might get a snorkel...
I really hate how these 2Fs sound so decided on some mods when did the rebuild.
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1911
chupacabra
At that elevation, you will need more advance than the stock timing marks at 7 degrees BTDC. From my previous experience living in Colorado, I would guess you will want 10-12 degrees BTDC base timing at least.
The oxygen content of the air remains more or less constant - but the amount of air drops considerably, at sea level its 14.7 PSIA at 9000 feet its 10.5 PSIA so only 71% of the amount of air available. Turbo or supercharger are the ticket to make power in thin air
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- #11
Snorkel only really works to keep the engine from sucking water when fording a creek/river. You need to compress air to make it more like sea level via a super or turbo charger.
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- #13
..or just move to sea level, that was the original plan
In WWII fighter planes, when at high altitude, they would shoot Nitrous Oxide to supplement the blowers…..maybe a Nitrous injection kit is in order. And at sea level, would accelerate like a Ferrari
Water methanol injection was the "war emergency power" option. Its use shortened engine life to like 20 minutes instead of like 50 hours but up the out put like 20% - could do the trick with someone on your 6.
corrected
en.wikipedia.org
corrected
War emergency power - Wikipedia
Yes at altitude you need an additional 0.75-1 degree of timing advance per 1,000 ft of elevation. (I’ve been living at 5,280’ wheeling to 10,000’+ my entire 45yr Landcruiser career)
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- #17
Thnx!!
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- #18
Gimme...Water methanol injection was the "war emergency power" option. Its use shortened engine life to like 20 minutes instead of like 50 hours but up the out put like 20% - could do the trick with someone on your 6.
corrected
War emergency power - Wikipedia
My dad was an aviation guy. He told me an electric blower would be the ticket for Elsie to meet the occasional need for more power. Personally I'm a big fan of turbo chargers - plan ahead to make up for turbo lag. Driving is a job and requires thought.
If you think you might need 4WD - turn in the hubs. Tire chains are much easier to put on if you can drive onto them before you are stuck.
If you think you might need carburator heat turn it because if you wait too long it might not work. When I move to the hill I would ice the carb on the long grade to town in the winter. I built a fluid heat riser for the intake due to running a header. Problem solved - I can't recall icing up since.
If you think you might need 4WD - turn in the hubs. Tire chains are much easier to put on if you can drive onto them before you are stuck.
If you think you might need carburator heat turn it because if you wait too long it might not work. When I move to the hill I would ice the carb on the long grade to town in the winter. I built a fluid heat riser for the intake due to running a header. Problem solved - I can't recall icing up since.
Chungas Revenge
SILVER Star
