What is this in the injector

[schoelta]

I'm working on an 89 E350 ambulance van that has been converted to an RV. The seals for the injector caps are leaking. Not a big deal, but I saw this on top of injector #6 (2nd from front on driver's side). Does anyone know what this is? I have never seen it before.

 

[mf7lakes]

Is that the same timing device that's on the nbr 1 cylinder on a truck engine???

You must be registered for see images attach

 

[tradergem]

Yes

 

[roostertail]

I just asked my mechanic buddy about this a week ago. He told me it was some kind of timing fitting. He started speaking in mechanic, so I just took his word for it.

 

[Nero]

It is the timing adapter. On van engines it is there. On truck engines it is on #1

 

[IDIBRONCO]

I saw this on top of injector #6 (2nd from front on driver's side).

That's #4. #6 is the third one back from the front on the driver's side.

Yes

Correct. Vans and Internationals time on #4 cylinder.

 

[KansasIDI]

That's #4. #6 is the third one back from the front on the driver's side.

Correct. Vans and Internationals time on #4 cylinder.

International effectively used an inverted Chevrolet cylinder numerical system. Gets kinda confusing after awhile, especially because of the unusual firing order.

 

[IDIBRONCO]

International effectively used an inverted Chevrolet cylinder numerical system. Gets kinda confusing after awhile, especially because of the unusual firing order.

I meant the IDI engines. The International gas engines that I've messed with were 345s and they used the same firing order as a SBC (1-8-4-3-6-5-7-2). They also numbered the cylinders like a SBC. The difference was that the SBCs all timed on #1 spark plug while the 345s timed on #8. In high school, we had a "test engine" that came out of an International bus. I don't know what size of a V8 it was, but it also timed on #8 spark plug.

 

[Old Goat]

When I got out of the Navy back in 66, I had a 64 International C-1000 1/2 ton Step Side PU. It had the smaller V8, the 266.
I had put in Plugs and Points, took it to a local shop to have it timed. They could not get the timing set right, and told me it was so far off, I was going to do serious damage to it and not drive it.

Took it to the International Harvester dealer and had it timed.
Told the mechanic the story, and that is where I learned the Corn Binders are timed off #8.

Sure wish I had not got rid of it.

You must be registered for see images attach

Goat

 

[IDIBRONCO]

Took it to the International Harvester dealer and had it timed.
Told the mechanic the story, and that is where I learned the Corn Binders are timed off #8.

IIRC, it says that they're timed on #8 on a valve cover or intake or something.

 

[franklin2]

Chevy and it looks like international label their cylinders "normally". In other words, looking at the crankshaft, they started at the front and went 1 through 8 to the rear. Ford is the one that messed up and labelled their engines looking at the top of the engine. Of course they never could get their bellhousing patterns right either.

 

[Old Goat]

IIRC, it says that they're timed on #8 on a valve cover or intake or something.

Well....I was young and innocent back then.
And didn`t know...


Goat

 

[KansasIDI]

I meant the IDI engines.

So did I. Aren’t the odd cylinders on the drivers side on a Chevrolet engine? Which is the inverse of an IDI, right?

The International gas engines that I've messed with were 345s and they used the same firing order as a SBC (1-8-4-3-6-5-7-2). They also numbered the cylinders like a SBC. The difference was that the SBCs all timed on #1 spark plug while the 345s timed on #8. In high school, we had a "test engine" that came out of an International bus. I don't know what size of a V8 it was, but it also timed on #8 spark plug.

Good info

 

[schoelta]

So to get back on topic. I apologize for the incorrect cylinder. Yes it is #4. What does it exactly do and why only one cylinder? How does it affect injector timing?

 

[Black dawg]

It creates a signal for a pulse style timing meter.