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-   -   fe main bearing (http://www.hotrodders.com/forum/fe-main-bearing-79669.html)

james diel 01-24-2006 07:44 AM

fe main bearing
 
main bearing choises groved 360 degrees or solid bottom ?

BOBCRMAN@aol.com 01-24-2006 08:21 AM

The solid bottom gives you MUCH more bearing load surface. If your oil system is done correctly there is no need for the 360 groove.

k-star 01-24-2006 08:54 AM

bearings
 
This is just thinking out loud so don't get freaked out about it until some ford guy answers but,, was there some deal with certain FE engines where you needed to 360 deg mains to feed the rods because of the location of the oil hole?????

I really do not know why i am thinking that but it just popped into my head... Like i said don't get freaked out because i could, and probably am totally wrong. I might be getting it confused with another engine family...

If that is a none issue i would use the bearings that only had the top groove... 360 degree mains are not needed IMO...

Keith

KULTULZ 01-24-2006 01:17 PM

Quote:

Originally Posted by k-star

This is just thinking out loud so don't get freaked out about it...

:eek:

Quote:

...until some ford guy answers but,, was there some deal with certain FE engines where you needed to 360 deg mains to feed the rods because of the location of the oil hole?????

I really do not know why i am thinking that but it just popped into my head... Like i said don't get freaked out because i could, and probably am totally wrong. I might be getting it confused with another engine family...

If that is a none issue i would use the bearings that only had the top groove... 360 degree mains are not needed IMO...

Keith

The 427MR used grooved mains as it had a cross-drilled crank. High speed operation only. No great benefit for the street.

paulo 01-24-2006 06:28 PM

Hey Kult.I am working on a '67 390 right now.We ordered a kit from PAW and to my amazement it included a set of Clevite 77 fully grooved main bearings.Problem is that the oil holes on the mains do not exactly line up with the holes on the bearings.Any comments? Thanks Paulo

KULTULZ 01-25-2006 12:46 AM

Quote:

Originally Posted by paulo

We ordered a kit from PAW and to my amazement it included a set of Clevite 77 fully grooved main bearings.Problem is that the oil holes on the mains do not exactly line up with the holes on the bearings. Any comments?

You need to enlargen the upper shell holes to match the galley feeds. The shell finish needs to be radiused and smooth.

The lower shells can be used, but like Bob mentioned, allow less bearing area.

paulo 01-25-2006 06:29 PM

Thanks K.I just got hold of a good book by Steve Christ.They mention this misalignment and the cure. By the way,don't you have a set of rocker shafts with spacers and springs? We need to buy them.Our 390 is missing some bits.

KULTULZ 01-27-2006 05:57 PM

Sorry about not replying sooner. It seems this NEW POSTS feature doesn'twork correctly.

The shafts, spacers and springs are still available from vendors such as PERFECT CIRCLE I believe.


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