Street strip pilot bushing?

[greendart408]

Let me start off and say I have a 69 340 swinger daily driver with 22k miles I have put on it with a roller bearing, street strip with zero issue. My latest 69 340 swinger that has a high comp old school w2 340 I put together with leftover parts came with a pilot bushing in the crank. I never even paid att to it and ran it. Well at our Halloween classic race I go to every yr it tried to seize to the input. Yes I dialed in the scattershield. My question is, install a new roller bearing or install the good bronze normal old school bushing? Keep in mind I mechanically ride the clutch at the hit at a high rpm in your mind. Like 5500 to 6500 or more to keep it in the meat. The input looks like I can easily clean it up with zero harm. Haven’t taken the bushing out of the crank to make sure the id is ok. Looks to have been the crap non bronze bushing that failed.

 

[RustyRatRod]

I would keep the bushing. Get a high quality bronze bushing. Sintered bronze they call it. It has self lubricating properties. I would lube it with a very high temp, high quality grease.

 

[rumblefish360]

What he said! ^^^^^
I’ve never greased the bearing myself save a little bit to help put it together.

The bearing itself, as I was told/described “Sweats” as it heats up and that’s all you should need.

I have not put the screws on the Dakota/Ram bearings yet.

 

[junkyardhero]

with that level of abuse, i'd go to the dak/ram roller bearing unit.

the sae841 self oiling sintered bronze bushing is excellent in stock and somewhat hi performance use, but i'd say you're a solid tier above that.

 

[lemondana]

Remember, there are two different diameter pilot bushing back then. The standard .940 and the .915 for the cranks that weren't finished honed.

 

[greendart408]

Since I had a pilot bushing failure I thought I would post that it had the grey looking pilot bushing in it. Note to self, no good don’t use. It seized or tried to. I had lubed it upon installation. Made 14 or 15 passes. Junk lol.