MRL solid rollers

[bobtile]

Has anyone here looked at or used the MRL solid roller lifters? I want to go to a solid roller cam this winter and would like some suggestions. I like the isky bushed lifters, but they are out of my price range .

 

[cdr]

if this is for the street, i would read this

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCcQFjAB&url=http%3A%2F%2Fblog.speedtalk.com%2F2014%2F04%2Fsolid-roller-lifters-bushings-or.html&ei=sy-SVOKdGsmXNoOahJgP&usg=AFQjCNF8FY3gkRweo4B3FWkVBmLLfBwC9A&bvm=bv.82001339,d.eXY

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to answer the ? no i have not used the MRL lifters,but i was lookin at them for my 512 build that will be street strip,i like the pressurized oiling to the roller,& read the article i posted,so now I am going solid flat tappet.

 

[SUPERSTOCKRACER]

Comps are good for you. I have a $816.00 set of Crowers w/o pushrod oiling lifters sitting

 

[bobtile]

if this is for the street, i would read this

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCcQFjAB&url=http%3A%2F%2Fblog.speedtalk.com%2F2014%2F04%2Fsolid-roller-lifters-bushings-or.html&ei=sy-SVOKdGsmXNoOahJgP&usg=AFQjCNF8FY3gkRweo4B3FWkVBmLLfBwC9A&bvm=bv.82001339,d.eXY

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to answer the ? no i have not used the MRL lifters,but i was lookin at them for my 512 build that will be street strip,i like the pressurized oiling to the roller,& read the article i posted,so now I am going solid flat tappet.

That's interesting. thanks for that.

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Comps are good for you. I have a $816.00 set of Crowers w/o pushrod oiling lifters sitting

ok, I'll give you 50 bucks and a spicy scallop hand roll.

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if this is for the street, i would read this

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCcQFjAB&url=http%3A%2F%2Fblog.speedtalk.com%2F2014%2F04%2Fsolid-roller-lifters-bushings-or.html&ei=sy-SVOKdGsmXNoOahJgP&usg=AFQjCNF8FY3gkRweo4B3FWkVBmLLfBwC9A&bvm=bv.82001339,d.eXY

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to answer the ? no i have not used the MRL lifters,but i was lookin at them for my 512 build that will be street strip,i like the pressurized oiling to the roller,& read the article i posted,so now I am going solid flat tappet.

How much street driving will you be doing? I would probably only put about 1000 miles on mine but also about 50-60 passes at the track?

 

[cdr]

probably 1500 street a year 30-40 passes.
looking at the tool steel flat tappets by Trend.

 

[Endangered Species]

Not sure about MRL, we use Lunatti which is a Morel roller lifter. I liked what I saw other than they were a little on the heavy side. I haven't pulled the intake yet to check them. I'll find out in a month or two.

 

[69 GTX]

CDR I'm wondering does the same apply to roller rockers? go with bushed instead of needle bearing? Also does the bigger lifter of the Mopar BB alllow for a better spread of force on the needle bearings ?

 

[cdr]

69 gtx,, the amount of needles on each roller would change the load on the roller shaft,as far as the rockers ? i have run full roller for years with no problems, but that has a much larger diameter than a lifter.

 

[snakeoil24]

The bronze bushed roller lifters need more oil than needle bearings. I don't buy the idea of faster failure. Roller lifters especially Solids do have a much faster ramp speed and more shock loading but they are designed for it. The people to really ask is crane cams they still are the top dog in Cam Design.

 

[bobtile]

The bronze bushed roller lifters need more oil than needle bearings. I don't but the idea of faster failure. Roller lifters especially Solids do have a much faster ramp speed and more shock loading but they are designed for it. The people to really ask is crane cams they still are the top dog in Cam Design.

I have the bushed rockers from Hughes. Do you feel that they would need more oil as well?

 

[Budnicks]

never ran MRL's , I have ran Crane's mostly {old sponsors}
or Isky's stuff for decades, some Lunati stuff too, far less thou...
The most I got before rebuilding using a solid Roller needle bearing style lifter, in BBC's or Mopars
{IIRC Crane's had a larger diameter, wider & heavier bodied rollers & oil supply},
-still available- ? not sure,
it's a long time ago now,

IIRC it was about 5,000 combined street/strip miles,
{no failures ever using Torco Racing Oils with hi-Zinc Phosphorus}
I would always checked stuff between freshening up or when doing valve "spring changes",
that's what would go away pretty fast, especially with aggressive roller camshaft profiles,
also running/checking your valve lash "often",
helps & tells you when there's a problem is going on,
you'll gain or lose clearances/lash very quickly, when you have any problem...

better to be safe than sorry/lazy

IMHFO you can't just install them & ignore them,
like a Hydraulic camshaft {even a hyd. roller should be checked every so often},
like allot of people want to do or are too lazy to run the lash check on a hi-dollar engine combos...

 

[bobtile]

I have a hydraulic roller now and checked them 3 times this year. Just because.

 

[Cranky]

From the link that CDR posted..... "And now many other Companies are following Isky into the bushing type solid roller lifter market. So, all of these lifter manufacturers certainly recognize the fact that needle type solid roller lifters have some serious durability/longevity short comings."

I'm also a fan of Isky products and think they are worth the money. IIRC, the 'new' style bushing lifters are not that new anymore.

 

[bobtile]

If the needle rollers last appx. 3000-5000 miles of street/strip use and the bushed ones only last 5000-6000 miles, I don't think they are worth the cost. I won't be running a very high lift. about 650 range so maybe they would last a little longer?

 

[snakeoil24]

I have the bushed rockers from Hughes. Do you feel that they would need more oil as well?

You will have no issues with bushed rockers since the grove faces down and they get plenty of oil.