1968 smog pump?

[gurskey]

Im beginning to think that the smog pump is a California truck thing or specific market. Its sounding like there are a few variations in this era. The Air injection System "if Installed" from the owners manual seems to be a pretty good clue to that. @dlzadl yours has the VSV, but did it have any sign of an air injection system. Smog pump or Air injection ports on the head plugged?

 

[gurskey]

This is a good conversation though.. There are not a lot of answers I have been able to find on the forum.

 

[ToyotaMatt]

This is a good conversation though.. There are not a lot of answers I have been able to find on the forum.

@gurskey There is one set of facts that have not come up yet :

- Since a Air Pump has its own "stand-alone" drive belt according to my New Purple & Old White parts Cataloger's what drove it ?

- Was there a Double Groove Water Pump Pulley on air pump equipped F engines ?

- Or , Was the air pump belt driven by a double groove crank shaft pulley ?

- What year was a double groove water pump pulley first introduced on a F engine

- What year was a double groove Crank Shaft pulley first introduced on a F engine

The Correct answers / facts to the 5 Questions above might Help Lead to the answer ?

 

[gurskey]

That is a good point. I will look at mine this weekend and see if it is a two groove pulley on the crankshaft. Im not sure if that will answer anything but maybe there are other clues like threading in the block for a bracket. But they may have all had that threading and who knows maybe all had 2 groove crankshafts pulleys, that would be good to know. We need answers..haha! I seem to think I saw a picture of a 40 of this era and the smog pump belt came off of the crankshaft pulley. Maybe someone with a smog pump can post a pic of there setup. I will see if I can find any pictures of an original truck.

 

[ToyotaMatt]

I forgot About My book again ..............


1967 F Engine has a 2 Groove Crank Pulley , That the Air Pump Belt is driven by

According to the book ...............

 

[65swb45]

All US market 1968 Landcruisers had an air pump. If you have a head with no fittings, it is not an original head...or the whole engine has been replaced. And yes, they had a two-groove, PRESS ON harmonic balancer.

Contrary to @Living in the Past , I have never seen a 1bbl paper element air cleaner that did not have the second port for the air pump. I probably have at least a half dozen of them on the shelf, along with the 1bbl carbs that belong to them.

 

[ToyotaMatt]

All US market 1968 Landcruisers had an air pump. If you have a head with no fittings, it is not an original head...or the whole engine has been replaced. And yes, they had a two-groove, PRESS ON harmonic balancer.

Contrary to @Living in the Past , I have never seen a 1bbl paper element air cleaner that did not have the second port for the air pump. I probably have at least a half dozen of them on the shelf, along with the 1bbl carbs that belong to them.

Thanks mark !

Can U post some Photo's of a complete intact 1967-68 Era Air Pump Set up mounted on one of your engines in your truck or a truck U have access to ?

It would be KOOL to compare Live real world action shots with My parts Catalogers Diagrams

I Know U can make this happen , Its Your Duty ..........

 

[Living in the Past]

All US market 1968 Landcruisers had an air pump. If you have a head with no fittings, it is not an original head...or the whole engine has been replaced. And yes, they had a two-groove, PRESS ON harmonic balancer.

Contrary to @Living in the Past , I have never seen a 1bbl paper element air cleaner that did not have the second port for the air pump. I probably have at least a half dozen of them on the shelf, along with the 1bbl carbs that belong to them.

I'm sure your right about the air cleaner haven't paid that close attention. I do remember air cleaners with what I believe having a factory installed rubber plugs in unused ports. No part number available just like the factory installed PTO spacer that Toyota only shows a part number for the gear. Up to my 99 4Runner have come across parts Toyota installed but they is no record of it even with a part number. I do know my 68 has the air rail ports with caps but two pulley crankshaft pulley I do not remember seeing that. How common was the early press on harmonic balancer with dual pulleys?

 

[65swb45]

I ‘may’ have a 1968 long block with an air rail yet on it, but not the pump. They are an interesting animal. Air nozzles are year-specific. The retainer nut for the air pump is copper plated, just like the banjo fittings on the wheel cylinders were. I did a mechanical resto on a 1968 for the owner of Cabe Toyota some years back and had to really dig into the minutea for him. One of the coolest things about doing that job was that he was a hoarder like me; whatever I told him I needed to make the job sano , he sent over an NOS part from his private stash.

And no big surprise, I got the job after his dealership’s mechanics botched the carb.

 

[gurskey]

All 68 us market had an air pump, but then the 3/69 to....??? Did not? Until 73? Is that correct? There was a gap in there where they did not have air pumps?

 

[joestewart]

Another anecdote: I bought a 1968 FJ40 with a burned up Chevy V8 in it. Purchased it in Fremont, California in about 1984. I yanked out the Chevy and dropped in an F engine without the air injection rail. Brought it to the smog referee and they rejected it (no air injection rail and no smog pump). Luckily, I had a spare 2F engine that had the rail and the pump. Dropped that in and I was good to go! Got my license plate and registration! I ended up selling that rig in Louisiana in 1998 - did all that work on it and I ended up getting a mere $1300 for the whole thing.

 

[Living in the Past]

All 68 us market had an air pump, but then the 3/69 to....??? Did not? Until 73? Is that correct? There was a gap in there where they did not have air pumps?

I'm curious about the double pulley on the crankshaft. The diagram showed the air pump having it's own pulley on crankshaft. If the early F145 all had a air pump then they all should have the double pulley. Pull the pump can see pulling the air rail and plug the ports but replacing the harmonic balancer with one that only had one pulley seems a bid extreme. Air pumps were removed to improve performance not look 100 percent correct version without a emissions.

 

[65swb45]

I'm curious about the double pulley on the crankshaft. The diagram showed the air pump having it's own pulley on crankshaft. If the early F145 all had a air pump then they all should have the double pulley. Pull the pump can see pulling the air rail and plug the ports but replacing the harmonic balancer with one that only had one pulley seems a bid extreme. Air pumps were removed to improve performance not look 100 percent correct version without a emissions.

John

The F145 could have had THREE different pulleys. 67 press on single groove, 68 press on dual groove, or 3/69 on bolt on single groove. F155 preceded the return of the air pump.

 

[65swb45]

All 68 us market had an air pump, but then the 3/69 to....??? Did not? Until 73? Is that correct? There was a gap in there where they did not have air pumps?

Sam

Left a VM for you at work. I have the air rail in the box with your other stuff.

 

[gurskey]

Sounds good Mark.
I think I messed up and gave you the wrong number to call me at. I just left a message on your phone line with the my correct number. Sorry about that, I get in work mode and start spouting off numbers.

 

[65swb45]

Wrapping up the ‘68 cylinder head now Sam

 

[gurskey]

OOOOHHH I like the looks of this!!!. Thats how you pack a cylinder head! Thank you for all the help Mark!!

 

[65swb45]

Ready for Round 3? 1968 Complete with guaranteed non-working factory 1968 ABV and super-cool factory brass nuts for the collector View attachment 1692397

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[ToyotaMatt]

Ready for Round 3? 1968 Complete with guaranteed non-working factory 1968 ABV and super-cool factory brass nuts for the collector View attachment 1692397

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View attachment 1692396

Do u know the reason Toyota Stopped using the Brass Manifold's mounting hardware Nuts & switched to Super grade 8+ steel ?

 

[65swb45]

Do u know the reason Toyota Stopped using the Brass Manifold's mounting hardware Nuts & switched to Super grade 8+ steel ?

I don’t KNOW a reason, but I could take a guess.

Or I could play a hunch that you have a copy of a factory service bulletin with an official reason.

That would be some good tech