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Re: Rottella T
[Re: greenfire]
#312695
05/10/09 01:53 AM
05/10/09 01:53 AM
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Joined: Feb 2003
Posts: 10,205
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,205
Someplace you aren't
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The syn Rotella in the blue jug is spendy but a great oil for the money. I bought a ton back when it was 15 bucks a gallon and used it in lots of stuff.
I want my fair share
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Re: Rottella T
[Re: Crizila]
#312699
05/10/09 10:28 AM
05/10/09 10:28 AM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Quote:
Cool ...THX
Is that CI an "industry" rating ?
CI is an industry rating. Has nothing to do with zinc content. Believe the older Rotella T was 1400 ppm zinc while the newer stuff is 1200ppm. Still the best out there for zinc content. Understand you can get it at Farm&Fleet, some Walmarts, and most truck stops.
I posted this quite some time ago,I'll do it again.The only way you will know the zinc content is have an analysis done.
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Re: Rottella T
[Re: dOrk !]
#312701
05/10/09 09:20 PM
05/10/09 09:20 PM
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Joined: Mar 2008
Posts: 571
Western NC
68Bullit
mopar
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mopar
Joined: Mar 2008
Posts: 571
Western NC
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Quote:
I would use a roller but since the roller lifters I have heard of here and elsewhere are not reliable .....I will pass on that idea.
Interesting. What's happening now with the newer roller lifters? I've seen something about this in another thread but couldn't remember exactly what was being discussed at the time. Can you tell more?
Next thing. Maybe a little off topic, but what exactly makes a "flat tappet" cam vulnerable now opposed to several years ago. I know the quality of oil has changed and the zinc/phosphourous is way less nowadays (for a flat tappet cam), but what makes the roller a stronger cam that it doesn't need the same amount of zinc? Is the flat tappet cam just weaker? Made of a lesser strength of metal?
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Re: Rottella T
[Re: 68Bullit]
#312702
05/10/09 09:54 PM
05/10/09 09:54 PM
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Joined: Jan 2003
Posts: 5,108
Chicago Blackhawks
hemicar1971
master
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master
Joined: Jan 2003
Posts: 5,108
Chicago Blackhawks
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I emailed Shell a while ago about Rottela. I got an email back and also phoned and talked to one of the Reps. They said Rottela has now 1200 ppm and recommended the Racing Oil that had 1500+ PPM. They recommended Pennzoil Racing Oil mainly because Shells owns them. I have heard Val.Racing Oil is Good and also Royal Purple. I have been using Val. Racing Oil 40 weight for years and now am almost out of it so I need to buy some more oil for use in the solid lifter cam motor.
1971 HEMI E BODY REGISTRY
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Re: Rottella T
[Re: 68Bullit]
#312703
05/10/09 10:02 PM
05/10/09 10:02 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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[quote), but what makes the roller a stronger cam that it doesn't need the same amount of zinc?
The rolling friction is way less than the sliding friction of the flat tappet lobe/lifter setup
live every 24 hour block of time like it's your last day on earth
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Re: Rottella T
[Re: hemicar1971]
#312704
05/10/09 10:21 PM
05/10/09 10:21 PM
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Joined: Mar 2008
Posts: 571
Western NC
68Bullit
mopar
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mopar
Joined: Mar 2008
Posts: 571
Western NC
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Quote:
I have heard Val.Racing Oil is Good and also Royal Purple.
I talked to a rep with Royal Purple and was impressed with their knowledge and understanding of the importance of using the right oils with flat tappets. The rep was of course biased toward his own RP brand, but he advised to just pick a good synthetic (of any brand), and avoid using addtives that we really don't know much about. Some additives with too much zinc could cause an ashing effect, which of course is bad. GM EOS as an example, warns against use after break-ins, and states on the bottle not to use as an engine "additive" 
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Re: Rottella T
[Re: 68Bullit]
#312707
05/11/09 03:25 AM
05/11/09 03:25 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
I've been looking very seriously into a roller cam to be retrofitted into my LA 360. Giving 2nd thoughts now that I'm hearing more about problematic lifters 
MY thoughts ...almost exactly. But I was thinking more in-the-line of a RB engine for an RV application.
Some of these RV/towing cams that Crane and CC make have radical high lifts, short duration, quick ramps and absolutely require the usage of a roller lifter(a flat tappet cam would go "flat" in no time) .....
B U T ...I have yet to see any type of reliability testing on these aftermarket parts. And I have heard many horror-stories HERE and elsewhere about these lifters failing.
What specifically ? ....guide bars falling off ... and the rollers coming apart and filling the motor with that junk.
WHEN the aftermarket can convince me of a fail-safe part(like the OEM has) ...I will stick with a flat tapet cam and USE the good-oil 
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Re: Rottella T
[Re: 68Bullit]
#312708
05/11/09 03:14 PM
05/11/09 03:14 PM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
Interesting. What's happening now with the newer roller lifters? I've seen something about this in another thread but couldn't remember exactly what was being discussed at the time. Can you tell more?
We see OEM hydraulic roller lifters holding up well for several 100k miles. But I wouldn’t put that much merit into an aftermarket set in high performance applications. In my view, more moving parts means more moving parts that could go wrong.
Also, the founder of Schubeck lifters warned of using roller lifters that have needle bearings in them likening them to a ticking time bomb. Instead, Joe Schubeck had a roller lifter design that utilized pressurized oil from the motor rather than the needle bearings. That would be the way to go if you wanted to run a roller lifter.
Quote:
Next thing. Maybe a little off topic, but what exactly makes a "flat tappet" cam vulnerable now opposed to several years ago. I know the quality of oil has changed and the zinc/phosphourous is way less nowadays (for a flat tappet cam), but what makes the roller a stronger cam that it doesn't need the same amount of zinc? Is the flat tappet cam just weaker? Made of a lesser strength of metal?
Roller lifters have a roller on the side of the tappet that meets the cam lobe. Because of this design, the coefficient of friction is greatly reduced when compared to a flat-tappet lifter which is basically a flat piece of metal that comes directly into contact with the cam lobe which slides over the cam lobe when in operation. As a result, a flat-tappet lifter has no provision in of itself to reduce friction like the roller lifter. This is why flat tappet cams rely primarily on anti-wear additives like Zinc & Phosphorous in motor oil to reduce the metal-to-metal contact friction.
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Re: Rottella T
[Re: CompSyn]
#312709
05/11/09 03:24 PM
05/11/09 03:24 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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my stock roller lifter have well over 150,000 miles and I swaped them to another roller block with a lunati roller cam .485/.485 lift and comp 901 springs 2 yrs ago all stock valve train and not a problem yet turns right up to 6000 rpms with no valve float ticking time bomb?...maybe..but I bet the rest will let go first on this 88 high milage jy cop motor  runwhatyabrung 
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Re: Rottella T
[Re: scratchnfotraction]
#312710
05/11/09 03:35 PM
05/11/09 03:35 PM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
my stock roller lifter have well over 150,000 miles and I swaped them to another roller block with a lunati roller cam .485/.485 lift and comp 901 springs 2 yrs ago
all stock valve train and not a problem yet
turns right up to 6000 rpms with no valve float
ticking time bomb?...maybe..but I bet the rest will let go first on this 88 high milage jy cop motor
runwhatyabrung
That’s right “stock” or in other words “OEM” roller lifters probably have a little more quality assurance than something you might get from an aftermarket retrofit kit; the kind people are reporting issues with.
Also, .485/.485 is conservative for a roller cam.
You prove the point well.
Wonder if we could find out what vendors the OEMs use?
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Re: Rottella T
[Re: patrick]
#312712
05/11/09 04:05 PM
05/11/09 04:05 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Umm? I prove what point well? that "oem" roller lifters are reliable or my cam is conservative? I would think that the roller lifters that ou812 has that have been modded to address some of the probs would be the ticket longer skirts around the roller to keep it from uncovering the oil galley with high lifts and edm/pressurized oiling to the neddle bearings and link bar away from the block and to the inside would be the way to go,seems they did there home work for longevity to me  dont know what all probs there could be..but roller lifters have been around since the 1800s but again its qaulity control,I geuss that make the diff 
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