H bearings or P bearings?

art leong · 04-07-2013, 08:00 PM

I've got my stuff apart. And I'm going to replace the rod bearings.
In this motor I've used H bearings, Just wondering if the P bearing wouldn't work as well.
Highest I'm going is 8500 (trans flare).
Thanks

Ed Wright · 04-07-2013, 09:03 PM

I have had great luck with coated H bearings. Mine seldom goes over 8600 either. They have lived so well I can't see changing.

carl hinkson · 04-08-2013, 07:25 AM

Quote:

Originally Posted by art leong

I've got my stuff apart. And I'm going to replace the rod bearings.
In this motor I've used H bearings, Just wondering if the P bearing wouldn't work as well.
Highest I'm going is 8500 (trans flare).
Thanks

P bearings are not chamfered or narrowed for a big radius crank. What is the build ????

art leong · 04-08-2013, 07:52 AM

Quote:

Originally Posted by carl hinkson

P bearings are not chamfered or narrowed for a big radius crank. What is the build ????

4 cylinder Dodge Neon 2.4 liter. Stock uncut crank. It does not have a full radius. I guess the chamfer is not needed.

pmrphil · 04-08-2013, 08:09 PM

Artie, the "H" bearing is quite a bit harder than the "P" and will withstand more abuse (read: boost). I'd prefer the "H" for most race engines.

art leong · 04-08-2013, 08:20 PM

Quote:

Originally Posted by pmrphil

Artie, the "H" bearing is quite a bit harder than the "P" and will withstand more abuse (read: boost). I'd prefer the "H" for most race engines.

Thanks. But all of my "abuse" comes in the form of my tow vehicle. The race car only sees the raging pressure of my hood scoop at 109 mph.

Adger Smith · 04-09-2013, 12:33 AM

Arts ride doesn't boost. Everyone seems to think you need a turbo on these little rides to run fast.
Since the H bearings are narrow, now. I think I would go for the full width P bearing since it doesn't need the narrow bearing because of the crank undercut instead of radius. Just make sure it doesn't loose any of the bearing clearance when changing to the "P" series. If the crank is "Real Hard" I'm not sure I wouldn't put a "V" series bearing or some of the King bearings in it. OOPS, that might blow Art's budget. I have a feeling that comes into play with the H &P selection... how about it Artie?

04-07-2013, 08:00 PM	#1
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	H bearings or P bearings? I've got my stuff apart. And I'm going to replace the rod bearings. In this motor I've used H bearings, Just wondering if the P bearing wouldn't work as well. Highest I'm going is 8500 (trans flare). Thanks __________________ Art Leong 2095 SS

04-07-2013, 09:03 PM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: H bearings or P bearings? I have had great luck with coated H bearings. Mine seldom goes over 8600 either. They have lived so well I can't see changing. __________________ Ed Wright 4156 SS/JA

04-08-2013, 08:09 PM	#5
pmrphil Member Join Date: Aug 2010 Location: CT Posts: 457 Likes: 1,798 Liked 347 Times in 151 Posts	Re: H bearings or P bearings? Artie, the "H" bearing is quite a bit harder than the "P" and will withstand more abuse (read: boost). I'd prefer the "H" for most race engines. __________________ Phil Molski PMR Performance S/C 1623

04-09-2013, 12:33 AM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: H bearings or P bearings? Arts ride doesn't boost. Everyone seems to think you need a turbo on these little rides to run fast. Since the H bearings are narrow, now. I think I would go for the full width P bearing since it doesn't need the narrow bearing because of the crank undercut instead of radius. Just make sure it doesn't loose any of the bearing clearance when changing to the "P" series. If the crank is "Real Hard" I'm not sure I wouldn't put a "V" series bearing or some of the King bearings in it. OOPS, that might blow Art's budget. I have a feeling that comes into play with the H &P selection... how about it Artie? __________________ Adger Smith (Former SS)