roller cam rip off

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Tawny Demon

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what is you guys opinion if I rip off mopars 590 cam and have it ground in the form of a solid roller the specs 590/590lift 312/312duration 106 love separation?
 
Why?? Better to call a good cam company and give them all the details of your ride so you can have the right cam made for you.
 
I have the solid flat tappet .509 with lifters sitting in my office, along with the spec sheets. I put it in my racecar, but then went to a bigger hydraulic cam that is awesome for my build. PM me if you might be interested in it, it only has 20 minutes of break in time on the cam and lifters.
 
I spoke with Engle an they thought it seemed like a good idea since it is such a strong cam in my type of application so why not try a roller
 
Afraid of wearing out the lobes on a flat tappet? This could be the only real reason I'd consider going roller. One of the main reasons for a roller cam is that you can open and close the valve much faster, because of that roller. Try to do that on a solid and the edge of the lifter would dig into the cam lobe. I might not even bother to have one ground - not sure if its possible but maybe just run roller lifters on an actual 590 cam...
 
airgrabber said:
Afraid of wearing out the lobes on a flat tappet? This could be the only real reason I'd consider going roller. One of the main reasons for a roller cam is that you can open and close the valve much faster, because of that roller. Try to do that on a solid and the edge of the lifter would dig into the cam lobe. I might not even bother to have one ground - not sure if its possible but maybe just run roller lifters on an actual 590 cam...
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UH NO...

you can run a flat cam without wearing out the lobes even on a big cam

The reason for a roller is the ability to handle more spring pressure on big cams, while having better ramps

lastly a flat tappet cam has a bevel ground into it so the lifter will spin, using a roller lifter will cause immediate failure...
 
Op, call a cam grinder and have them grind a cam for your build, why run a roller with old tech on it?

just get a custom ground roller and it will outperform like you cant imagine...
 
805moparkid said:
Op, call a cam grinder and have them grind a cam for your build, why run a roller with old tech on it?

just get a custom ground roller and it will outperform like you cant imagine...
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Ed/805 posted simplicity. I vote for this. That older profile, may actually cost you more,than a close off the shelf solid/hydraulic roller. When you are talking rollers(either), airflow numbers & compression become a more needed input.
 
dustoff440 said:
the virtual dyno at comp cams is pretty good

compcams.com download camquest6
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Sorry to tell you this but it's not. It will only show you Comp cams profiles and even then they will be vanilla off the shelf profiles. Custom profiles are so cheap these days,you would be crazy not to take advantage of them.
 
Bakerlite said:
Sorry to tell you this but it's not. It will only show you Comp cams profiles and even then they will be vanilla off the shelf profiles. Custom profiles are so cheap these days,you would be crazy not to take advantage of them.
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Thanks rustyrat I should have said that camquset6 was A GOOD PLACE TO START to get an idea of what he would need
 
Tawny Demon said:
what is you guys opinion if I rip off mopars 590 cam and have it ground in the form of a solid roller the specs 590/590lift 312/312duration 106 love separation?
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regrinding is cheap but dont forget that you will also be cutting off the hardening especially if you want to reduce the lsa
 
It's not as simple as using the flat tappet specs and spitting out a roller with them. You can do it, sure, but it will never run to its full potential. The profile between the two lobes is so drastically different. You should call Oregon Cam and tell them your basic idea. They can grind whatever you want. But they will know best how to transfer from one type profile to another.

I had them regrind my Hemi cam. It was a stock hydraulic core. They reground it to a small street solid with no trouble at all. They are very good at what the do. Plenty of other cam grinders out there too, but I have found Oregon to be courteous. They spent over an hour on the phone with me telling me about their process and helping me make a decision.
 
one thing on regrinds for rollers..is make sure you measure your roller lifter in relation to the oil galley ports..and calculate it off of the base circle.
if you have the base circle diameter made smaller to change the lifter profile and or add lift...this means the lifter will run farther down in the lifter bore when its running on the base circle/valve closed.
..this could uncover the oil galley feed holes and you will loose oil pressure.

as to the running a roller lifter on a straight 509 cam lobe profile... the valve events on the roller will not match the valve events on a flat tappet..if your using the exact same lobe profile for both sinarios.
...with a roller on that lobe you would have a worse valve events..than the tappit lifter... the came would essentially be smaller....not in total lift..but in all the other numbers/events
just get a roller turned to meet the needs...
I recommend having your cam built to match the flow chart/graph of your heads/valves
fwiw..
be well
 
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