39 replies to this topic

[Ron Hershman]

Don't see the point to boil out the oil first cause they seem to solder just fine for me.

Agreed but the oil they impregnate with is not that great of oil to begin with

[Ben Martinez]

A bushing is a bushing is a bushing regardless of material or manufacturing process. Fundamentally a bushing is type of bearing. Since most classes have a rule about the type of bearings that can be used, we have adopted a convenient designation of bushings and bearings (frictionless). The most common bushing that we use is an oillite bearing which is very porous. Cooking the bearing drives out whichever oil product the bearing was manufactured with and then you can quench it with the oil of your choice which will impregnate the bearing. We continue to apply oil to the bushing to maintain some type of buffer for the bearing surfaces (bushing id and axle od)

Ben

[Ron Hershman]

Cooking the bearing drives out whichever oil product the bearing was manufactured with and then you can quench it with the oil of your choice which will impregnate the bearing. We continue to apply oil to the bushing to maintain some type of buffer for the bearing surfaces (bushing id and axle od)

Ben

No it will not "impregnate" the material by "quenching". The only way to fully impregnate the material is by Vacuum impregnation.

This is how it is done in the MFG by the MFG's of sintered bushings/bearings.

The "oilites" we use are vacuum impregnated with Turbine oil.

[Gator Bob]

This material is also used in fuel filters

[Ron Hershman]

Yep in Exhaust mufflers too.

But both are made a bit differently

[MrWeiler]

Ron PM me as I can't get thru to you...perhaps your mailbox is full?

[Pablo]

This is an oilite. Great for rental cars, or races where frequent oiling is not possible, not desired, or not convenient, such as an Enduro with green light pitting only:



This is a Slick 7 Racing Bushing, very precise, more expensive, and requires oiling.
I oil mine with synthetic at a minimum of twice a race, and have never had one fail or wear out.
If you forget to oil them, they WILL seize

[Ron Hershman]

I will take the oilite any day over the "racing?bushing"

[Pablo]

Some people prefer one over the other. Both can be made to work well. Hershman obviously prefers oilites.
So I have obviously been beat many many times, very badly, by oilites
As long as they are aligned well and secured properly, they all work.

[Guy Spaulding]

As far as descriptive terms go, I just saw an ebay listing for a classic Revel Ford GT Roadster that includes Revel's description of the car's attributes, including "Self-lubricating sintered bronze bearings"

[Rick]

You could always seek out a pair of Carlos' matrix aluminum bushings. Hummmmmmmmmmmm.

[Old pink can guy]

I hated oilites in the old days. I had to pick threw all they had to find a pair that were not sloppy. Ball bearings is the way to go or run the slick 7 bushings. Ken.

[Guy Spaulding]

Yep in Exhaust mufflers too.

But both are made a bit differently

Oh, so that's what muffler bearings are made out of

[Old pink can guy]

Guy and also left handed smoke shifters Too. LMAO

[Steve Boggs]

When it comes to sintered bronze oilites for motors, the only one's I know of that come with the oil already in them are Mura's. The Champion/Pro Slot are bone dry. I use some oil made for Continental Aircraft (piston) Engines that is used in their magneto ignition systems. You soak the oilites in it while in a small toaster oven at 200* for an hour.
 
I also have a 20 year old tool that Parma sold called an "oilite boring bar". Its just a 2mm blank that burnishes the oilite so that it has an extra .0005 clearance for the armature. It works really well and the oilites last a long time when using it.