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FE Power Forums => FE Technical Forum => Topic started by: fekbmax on September 01, 2015, 12:58:51 PM

Title: Fe main bearings.
Post by: fekbmax on September 01, 2015, 12:58:51 PM

Recommendations on main bearings. What do you guys like to use for a all out race engine.  Are there any "P" series bearings available for the fe ?.

Title: Re: Fe main bearings.
Post by: blykins on September 01, 2015, 01:39:06 PM

Aftermarket block or factory block?  What kind of racing?

I've used a little of everything.  The FM bearings are nice and will drop right in.  If you have an aftermarket block that uses a Cleveland bearing, and you use something like a Clevite, ACL, or King, you will most likely have to cut the thrust bearing flange down. 

I use a lot of FM bearings, but I also build engines where I use coated bearings and usually reach for the Clevite HK series stuff.

Title: Re: Fe main bearings.
Post by: jayb on September 01, 2015, 01:40:52 PM

I've had good luck with the Federal Mogul 125M bearings, with the 3/4 oil groove.

Title: Re: Fe main bearings.
Post by: fekbmax on September 01, 2015, 02:39:23 PM

Factory block.  Drag racing.
Was suprised king didnt make a performance bearing for the fe.
I been useing the federal mogul bearings with good luck but was just wondering about other options and what others think.
With the scat crank I have had to clearance the thrust bearings anyway to get any end play at all. I normally shoot for .005  .
More or less end play for a hard hitting jerico ? ?

Title: Re: Fe main bearings.
Post by: fekbmax on September 01, 2015, 02:48:02 PM

Going through the dyno sheets here I did notice the majority used the fm 125m so I guess ill stick with that. I was just wondering.
Sometimes I tend to over think things.. uggh..  :-\

Title: Re: Fe main bearings.
Post by: turbohunter on September 01, 2015, 03:54:59 PM

Those darn Dyno sheets were a heck of a good idea.
Really helps out us guys that don't put an engine together everyday.

Title: Re: Fe main bearings.
Post by: fekbmax on September 01, 2015, 09:03:15 PM

 
I read in a old network 54 form where Barry mentioned that there was no issue cutting the tangs off the Cleveland main bearings to use in a factory block. If this is true i could possibly use the king xp main bearings. I'm using pro-gram billet main caps that have both set of tang registers anyway so id just have to do the block side ?
Again I'm just thinking and wondering and prob over thinking and I'm sure the FM 125m are just fine but I been using the king xp rod bearings..

Title: Re: Fe main bearings.
Post by: blykins on September 02, 2015, 05:13:07 AM

You can do it that way.  However, for a drag race motor, the FM bearings are perfectly fine. 

Title: Re: Fe main bearings.
Post by: fekbmax on September 02, 2015, 06:46:21 AM

Thanks for the input guys.