'65 Fuel Injection

[Harold W.]

Is any special lubricant required for the injection drive shaft, or is multipurpose grease okay?

[Ken A.]

Re: '65 Fuel Injection

I use Sta Lube STAPLEX.

[Jim L.]

Re: '65 Fuel Injection

I use disc brake wheel bearing grease. It has proven itself to my satisfaction in high output applications (extended wide open throttle),

Whatever grease you select, use more than you think is necessary. Too much is not enough.
.
Jim

[John D.]

Re: '65 Fuel Injection

Listen to Jim Lockwood gang. Dealers sell wayyyy too many drive cables. You would be amazed at how many FI owners use no grease at all. Makes you wonder..... (don't want to be making fun of guys)
I just tell people to use any brand (Dukes favorite brand) of disc brake wheel bearing grease. As much as possible. Now this doesn't mean taking a hi-pressure grease gun and filling up the housing with grease as it will ouzo out.
There is better grease but the above grease will work just fine. Don't use lithium grease as it's crap.
Make sure your housing isn't kinked.
Make sure your hi-pressure pump isn't binding. And above all carrry a spare cable. John

[Duke W.]

Re: '65 Fuel Injection

My preference would be GM 1960954 "siliconized" distributor and starter motor grease (distributor grease well and starter motor bushings), but it's long out of production. It's a lot more slippery than wheel bearing grease which is designed for high load/high temperature lubrication, but the FI drive cable does not see high loading or temperature like wheel bearings and ball/steering joints.

If you take of dab of each an rub it between your thumb and fore finger, wheel bearing grease quickly becomes gummy, but the ...954 remains very slippery.

Given the above the next best alternative is a full "synthetic" NGLI #2 general purpose grease like Mobil 1.

Has anyone ever tried graphite like Lok-Eze or a motorcycle cable graphite lubricant?

Did GM ever specify a lubricant in the various FI sevice documentation?

Duke

[Wayne M.]

Re: '65 Fuel Injection

My preference would be GM 1960954 "siliconized" distributor and starter motor grease (distributor grease well and starter motor bushings), but it's long out of production. It's a lot more slippery than wheel bearing grease which is designed for high load/high temperature lubrication, but the FI drive cable does not see high loading or temperature like wheel bearings and ball/steering joints.

If you take of dab of each an rub it between your thumb and fore finger, wheel bearing grease quickly becomes gummy, but the ...954 remains very slippery.

.... Duke

Here's the 1960954. You can read its suggested applications on the side of the container.



c

[Tom P.]

Re: '65 Fuel Injection

As mentioned, too much grease is not enough!!!

[Jim L.]

Re: '65 Fuel Injection

How does GM 1960954 or a NGLI #2 general purpose grease hold up to heat? Due to both engine heat and internally generated heat, the cables and casing get very hot.

[G B.]

Re: '65 Fuel Injection

I don't think any special lube is needed. I use Valvoline synthetic wheel bearing grease. It's red and has no fibers in it.

Actually, I've never encountered an FI pump cable that broke due to friction with the wall of the housing. I've seen some that were worn, but never broken in two. Almost all of the broken cables I've encountered, maybe 50, have failed due to catastrophic loading when the gear pump locks up from rust/goo or it ingests something it can't pass.

I've seen a few that have become unusable due to rounded corners on the pump end, and a few that have kinked and shortened enough to slip out of the pump, and even one wound backwards that started to unwind... but break in two due to rubbing on the inside of the housing? Naaaah, not yet.

Some of you who have had a cable rub in two from contact with the housing inside wall should post some photos. Please teach me about this kind of failure. I think it may be very, very rare.

[Mike M.]

Re: '65 Fuel Injection

agree. mike

[Ken A.]

Re: '65 Fuel Injection

I use Sta Lube STAPLEX.

This is GM's supplier for their red grease, FWIW>

[Harold W.]

Re: '65 Fuel Injection

Another question. I have been carrying a spare F I injection pump shaft around for years, and after lubing the one installed, I noticed the spare is different. It doesn't have a "washer" on the distributor end. Here's the picture. The shaft is exactly 7" long. Is the "washer" a loose piece that is missing, or is my spare shaft damaged or from an earlier unit. BTW, I had the car out yesterday for a ride, and as usual it has a slight mid-range miss, but it runs well enough to put a smile on your face. Actually, if you keep the pedal to the floor, you don't notice anything wrong.

[Duke W.]

Re: '65 Fuel Injection

BTW, I had the car out yesterday for a ride, and as usual it has a slight mid-range miss, .

That shouldn't be the case, and it may be an easy fix, but more info is needed - the RPM range and throttle position range where it occurs. Is it during cruise or light acceleration...just top gear or all gears? Provide a very thorough description... also the model year and whether there are any mods like a non-OE camshaft.

It's a different subject, so start another thread if you want some advice.

Duke

[Harold W.]

Re: '65 Fuel Injection

Duke, thanks, I'll start a thread regarding performance, but back to the injection pump cable. Any idea whether my "spare" is usable on my '65 F I. Also wondering if I have it correctly installed now. I have the end with the swaged-on bushing on the distributor end, but I saw a photo at LI Corvette showing the swaged end at the injection pump end. Which is correct? Thanks.

[Tom P.]

Re: '65 Fuel Injection

Distributor end.