rod bearing question

crushnut

New Member

Apr 27, 2003

870

0

0

Oregon

Mar 18, 2004

#1

• Mar 18, 2004

• #1

Should the bearings have a channel or groove in the middle running the length of the bearing, or should it be flat?

Thanks

 

Route666

Active Member

Aug 16, 2003

1,652

6

39

Brisbane, Australia

Mar 18, 2004

#2

• Mar 18, 2004

• #2

The groove is to help distribute oil, and to keep a little reservoir in each rod bearing. So yes it is meant to have a groove.

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Mar 18, 2004

#3

• Mar 18, 2004

• #3

Never seen rod bearings that had a groove, only mains.

 

Route666

Active Member

Aug 16, 2003

1,652

6

39

Brisbane, Australia

Mar 18, 2004

#4

• Mar 18, 2004

• #4

lol ok, maybe I was thinking mains. Yeh I think I remember some without grooves, that were smaller, so I guess they're rod bearings. Last time I took an engine apart was a while ago. (and I was a young kid)

*Phew, regained some dignity there...*

Hang on did I think that or say it?

AHHHH!

 

crushnut

New Member

Apr 27, 2003

870

0

0

Oregon

Mar 18, 2004

#5

• Mar 18, 2004

• #5

So no channel for rod bearings, only on mains? Thats weird because i have seen pictures of rod bearings with the channel I guess our cars dont require them, huh?

 

crushnut

New Member

Apr 27, 2003

870

0

0

Oregon

Mar 18, 2004

#6

• Mar 18, 2004

• #6

Like these:

I would think that you would want the channel to improve oil distribution through out the bearing, plus these have a hole in them too These are main and rod bearings for a 289/302.

 

LMan

Founding Member

Aug 10, 2002

1,246

0

0

Mom's basement

Mar 18, 2004

#7

• Mar 18, 2004

• #7

only rod bearings Ive seen that had grooves, they weren't there by design

..but I guess that doesnt mean somebody doesnt make some

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Mar 18, 2004

#8

• Mar 18, 2004

• #8

I have bearings in my garage. They have a small hole, but no groove. 351w that is. I'm sure that is all rod bearings.

 

crushnut

New Member

Apr 27, 2003

870

0

0

Oregon

Mar 18, 2004

#9

• Mar 18, 2004

• #9

Ok now im just confused And not sure what i need

 

LMan

Founding Member

Aug 10, 2002

1,246

0

0

Mom's basement

Mar 18, 2004

#10

• Mar 18, 2004

• #10

I think its a nice-to-have that certainly couldnt hurt, but I personally wouldnt spend mucho shekels on them that way. Ive never heard of an engine going south b/c their rod bearings werent grooved

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Mar 18, 2004

#11

• Mar 18, 2004

• #11

All the bearings in the above pic are mains!!! Mains are grooved in the top only. Rods = no groove.

 

Mach1steve

New Member

Feb 10, 2004

95

0

0

Burlington, Ont.

Mar 18, 2004

#12

• Mar 18, 2004

• #12

correct

Brian is correct
no grooves on Rod bearings

 

6Stang7

New Member

Jun 1, 2003

1,470

0

0

Livermore, CA

Mar 18, 2004

#13

• Mar 18, 2004

• #13

Were did you buy your bearings from? Take them back and make sure that they give you rod bearings.

-Shaun

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Mar 18, 2004

#14

• Mar 18, 2004

• #14

brianj5600 said:

All the bearings in the above pic are mains!!! Mains are grooved in the top only. Rods = no groove.

Click to expand...

There are sets of mains that have both halves grooved. Seen several sets, mainly on FE Series main bearing sets

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Mar 18, 2004

#15

• Mar 18, 2004

• #15

Full grooves on mains scare me. The bottom takes all the load. Seems like solid lowers would take more abuse. Do all FE's use full grooves.

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Mar 18, 2004

#16

• Mar 18, 2004

• #16

Wow! I just check the mains for my motor.....full grooves!!! I don't rmember what the mains of mf 302 looked like. Maybe the massive mains like more oil.

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Mar 18, 2004

#17

• Mar 18, 2004

• #17

The FE's need more oil but I too would prefer no grooves on the bottoms. I guess the full grooves are a quick fix for mfg cost's and to emulate the older 390 Hi-po crank's fully grooved journals.

 

crushnut

New Member

Apr 27, 2003

870

0

0

Oregon

Mar 19, 2004

#18

• Mar 19, 2004

• #18

Thanks guys