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Torrington bearing & Long term durability? #1040594
07/26/11 06:21 PM
07/26/11 06:21 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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I'm looking at getting a Rollmaster timing set for my Six-Pack three bolt cam engine. The Rollmaster timing sets all come with the Torrington Bearing set-up in their three-bolt applications.

My only hesitation with the Torrington Bearing is long term durability in a mild street engine.

How often do these go bad if any?

Are they problematic at all?

Can I be confident it will last 100k plus miles in a mild street application?

Thanks in advance!

Re: Torrington bearing & Long term durability? [Re: CompSyn] #1040595
07/26/11 06:32 PM
07/26/11 06:32 PM
Joined: Jul 2008
Posts: 30,444
Florida STAYcation
dOoC Offline
The village idiot's idiot
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I hear that Amzoil oil eats-them-up .... so beware !

Re: Torrington bearing & Long term durability? [Re: dOoC] #1040596
07/26/11 06:39 PM
07/26/11 06:39 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:

I hear that Amzoil oil eats-them-up .... so beware !




Thanks for that Doc, I can always count on your objective opinion

Anyone else care to weigh in?

Re: Torrington bearing & Long term durability? [Re: CompSyn] #1040597
07/26/11 06:44 PM
07/26/11 06:44 PM
Joined: Jul 2008
Posts: 30,444
Florida STAYcation
dOoC Offline
The village idiot's idiot
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...and we can always count-on-CHOO huffing-and-puffing that one certain oil !

#1 - From knowing a bit about Tor bearings in a converter and trans ... it can not be a sloppy-fit or you will hammer the bearings. #2 - I think on something like this ... it is a gimmick.

Re: Torrington bearing & Long term durability? [Re: CompSyn] #1040598
07/26/11 06:48 PM
07/26/11 06:48 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Master

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Posts: 52,972
Romeo MI
If they arent in compression all the time they work
fine... it needs to float some to keep it oiled...
never heard about Amoil eating them up and dont know
why it would

Re: Torrington bearing & Long term durability? [Re: MR_P_BODY] #1040599
07/26/11 06:59 PM
07/26/11 06:59 PM
Joined: Jul 2008
Posts: 30,444
Florida STAYcation
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Florida STAYcation
But P ....from what I know ... they work better with slight compression on them. The on-and-off can hammer them.

The Amzoil "dig" was just a at CS ...

Re: Torrington bearing & Long term durability? [Re: dOoC] #1040600
07/26/11 07:26 PM
07/26/11 07:26 PM
Joined: Oct 2005
Posts: 8,879
Ontario, Canada
S
Stanton Offline
Don't question me!
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S

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Posts: 8,879
Ontario, Canada
My gear drive has one behind the cam sprocket. I think its there so that when you install the required cam button you don't run the risk of seizing the sprocket to the block if you have too much preload. Personally I'd rather have some clearance on the cam button and not have the bearing there. If you're worried about it, go to a bearing supply and see if they have a similar size and thickness bronze thrust washer.

Re: Torrington bearing & Long term durability? [Re: CompSyn] #1040601
07/26/11 07:26 PM
07/26/11 07:26 PM
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
P
Performance Only Offline
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P

Joined: Jul 2010
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Delray beach, Florida
i don't see the need for a bearing between the camshaft and the block. there's no constant loading against each other. very seldom do you see a 40 year old block with any appreciable wear in that area.
we sell a few different brands of timing chains, including rollmaster, but we choose to install a better chain and billet top and bottom gears in the engines we build. (unless of course it's getting a belt drive)


machine shop owner and engine builder
Re: Torrington bearing & Long term durability? [Re: dOoC] #1040602
07/26/11 07:27 PM
07/26/11 07:27 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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Quote:

But P ....from what I know ... they work better with slight compression on them. The on-and-off can hammer them.

The Amzoil "dig" was just a at CS ...




Doc, I knew it was a 'dig". Without your "digs", moparts wouldn't feel like home.

MR P BODY,

So not much to be concerned about with a hydraulic flat-tappet? I always thought the Torrington bearing was basically for roller cam applications as roller cams don't have the tapered lobes to keep the cam from walking in unison with the cam button.

Just want to make sure all my bases are covered.

Re: Torrington bearing & Long term durability? [Re: Performance Only] #1040603
07/26/11 07:38 PM
07/26/11 07:38 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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Quote:

i don't see the need for a bearing between the camshaft and the block. there's no constant loading against each other. very seldom do you see a 40 year old block with any appreciable wear in that area.
we sell a few different brands of timing chains, including rollmaster, but we choose to install a better chain and billet top and bottom gears in the engines we build. (unless of course it's getting a belt drive)




Interesting, I thought I've read that Rollmaster timing sets are about as good as it gets for timing chains?

Well, I'd certainly be interested in buying a better than Rollmaster unit if the price is right. Shoot me a price and model number so I can research it further if you would.

I'd be fine with a really good three-bolt timing set without the Torrington bearing.

Good info, Thanks!

Re: Torrington bearing & Long term durability? [Re: CompSyn] #1040604
07/26/11 09:00 PM
07/26/11 09:00 PM
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
P
Performance Only Offline
top fuel
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P

Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
Quote:

Quote:

i don't see the need for a bearing between the camshaft and the block. there's no constant loading against each other. very seldom do you see a 40 year old block with any appreciable wear in that area.
we sell a few different brands of timing chains, including rollmaster, but we choose to install a better chain and billet top and bottom gears in the engines we build. (unless of course it's getting a belt drive)




Interesting, I thought I've read that Rollmaster timing sets are about as good as it gets for timing chains?

Well, I'd certainly be interested in buying a better than Rollmaster unit if the price is right. Shoot me a price and model number so I can research it further if you would.

I'd be fine with a really good three-bolt timing set without the Torrington bearing.

Good info, Thanks!




rollmaster has a few different "series" of chain sets. some are better than others. their top of the line stuff is good. i didn't post the information or my opinion to try and sell parts. i was just trying to point out that i wasn't biased based on selling a competitors product, since we sell several brands, including rollmaster.


machine shop owner and engine builder






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