Reference: Carrying extra fuel in CMP on long trips.....

[Bob Carriere]

Hi Harry

Not sure how dependable or fast these little suckers work..... in the old days of M 37 I used a spark plug pump.... easy to fit on a flat head Dodge...... worked rather well but takes a while to bring tires up from 12 pounds to 40+ for the highway but way faster than the little cigar lighter pump available back then.... I still have it but the rubber hose is now brittle....

The main hassle is getting to the start of the dirt roads or about 4 hours!!!!

May need a tank as well as I might play with the spare set of horns from a deuce.....

Bob C.

[maple_leaf_eh]

Originally Posted by Bob Carriere

Hi Harry

Not sure how dependable or fast these little suckers work..... in the old days of M 37 I used a spark plug pump.... easy to fit on a flat head Dodge...... worked rather well but takes a while to bring tires up from 12 pounds to 40+ for the highway .....

We know engines are compressors. But what about sprayed fuel in your tubes?

As for me joining the Bob Convoy on the Backroads Expedition? Not until my M151A2 comes out of rebuild. The guy who welded it together put a good half on the front, but the back half had a serious attack of the tin termites.

[Grant Bowker]

Originally Posted by maple_leaf_eh

We know engines are compressors. But what about sprayed fuel in your tubes?

To start with I wondered about that too but it turns out that there's a diaphragm between the cylinder gasses in the pump and the atmospheric air being compressed into the tyre. The pulsing pressure from the engine's cylinder provides the power to move fresh air through check valves and the pump to the tyre being inflated without any mixing of the two sets of gasses. Due to the now imbalanced cylinder pressures without the combustion cycle it is advised not to rev the engine highly in a desire to speed the inflation...

[maple_leaf_eh]

Originally Posted by maple_leaf_eh

We know engines are compressors. But what about sprayed fuel in your tubes?

....

Originally Posted by Grant Bowker

To start with I wondered about that too but it turns out that there's a diaphragm between the cylinder gasses in the pump and the atmospheric air being compressed into the tyre. The pulsing pressure from the engine's cylinder provides the power to move fresh air through check valves and the pump to the tyre being inflated without any mixing of the two sets of gasses. Due to the now imbalanced cylinder pressures without the combustion cycle it is advised not to rev the engine highly in a desire to speed the inflation...

I "invested" a half hour of company time Googling and Youtubing for engine air compressors. It seems old Mr. Schrader the tire valve inventor would sell you a spark plug adaptor and a piston pump that blocked the cylinder head, but pressurized fresh air to go to your flat tire. Very clever! Now do I go looking for one on Amazon?

[Bob Carriere]

....I doubt they are still making/selling them.....and for most modern vehicle you would have to find the spark plug first and once found figure out if you can physically reach it...... flatties were so nice......and on long 4x4 trips you could warm up you Kentucky fried chicken wrapped in foil right on top of your engine.

Burp!!!!!

[Paul Singleton]

This one almost looks new!

https://www.kijiji.ca/v-art-collecti...ump/1676076576

[Bob Carriere]

Good day Hawk eye!!!!

....what size spark plugs is it set for...... and he is not listing adapters.....

Am I correct in saying it must be 14mm for a 261 GM/Chev///AC 43

Pee Hess ..... is must be newer with that gauge included...old ones did not have one..... may be having a Biden moment!!!!