Trick flow noob ?s

-
I drill into the rocker feed oil port from the lifter gallery. Then use restrictors to meter the flow.
 
Bakerlite said:
I drill into the rocker feed oil port from the lifter gallery. Then use restrictors to meter the flow.
Click to expand...
How much do you restrict flow? I have a set of TrickFlows and they seem to have a much smaller feed than factory or other aluminum heads. I think it's around 1/8" maybe a little smaller. Is that small enough or would one need to be around .060"-.080"?
 
Ok need to clarify everyone. I dont have the PRW Rockers that are worn out. But I do have a set of them on my 360 magnum engine.
 
19DUSTER73 said:
How much do you restrict flow? I have a set of TrickFlows and they seem to have a much smaller feed than factory or other aluminum heads. I think it's around 1/8" maybe a little smaller. Is that small enough or would one need to be around .060"-.080"?
Click to expand...
Depends what type of rocker your running but .060 would be the biggest.
If you search the net, you will find a lot of discussion about the subject, usually around Indy blocks.
 
Bakerlite said:
Depends what type of rocker your running but .060 would be the biggest.
If you search the net, you will find a lot of discussion about the subject, usually around Indy blocks.
Click to expand...
I'm running comps magnums. I thought I had read .060 somewhere but couldn't remember where. Thanks
 
Depends on how the bushings are setup in the rockers or if your running needle rollers. A full bushed rocker will act like it's own restrictor. Split bushed rockers with a gap in the bush usually don't because of the location of the external lube holes to the pushrod and valve tip.
If I use TD with needle rollers and with pushrod oiling, I just block off the shaft supply altogether.
 
Bakerlite said:
That's nice for you, but in my world they suck..
If I had to guess, I'd say your bush material is different to what is used in the PRW's.
I don't wipe out rockers like mopar65's either.
I've never used PRW rockers, maybe they suck as well.
I've used the earlier Comp Cams rockers without the bushing, (steel on steel, prone to galling ) and with the correct oiling they looked a lot better than those PRWs pictured earlier.
Personally I'd be adding an oil groove to the shaft.
Click to expand...
The stock 273's have the grooves.
 
cookietruck said:
Damn that sucks. Wonder if a full rebuild at some place like RAS would make them last longer.

what are you spring pressures?
Click to expand...
You build a motor for a particular use. Using a high pressure spring would not be wise on a daily driver, but at the track on weekends it would be the way to go. Some motors need a rebuild after just a few passes but they are not for daily use.
 
You must log in or register to reply here.
-

Back
Top