Put your CR Pressure Relief Valves back in!

Just a couple thoughts here. Last week we gained 70 HP from a billet rail plug over a pipe plug in the banjo bolt. The valve had been leaking a little at high PSI. Also, my 03 was driving me crazy for a while, ....big injectors, two big cp3's, no rail relief, and when you would hammer on throttle and let off fast it would want to go, and then after 2 seconds it would fall off. Maybe the best is to have relief valve for everyday day driving and put the rail plug in for race only. The best thing would be to see what PSI number is the breaking point and build a rail relief that will consistently work there, allright Don, get to work, lol!
 
I asked that question on another thread.
Some say the (still wants to go) is in the programing.
If it is pressure bleeding off , that cant be good.
Reb, have you tried putting the RV back in to see if it makes any difference?
thanks,doug
 
Reb.B said:
Just a couple thoughts here. Last week we gained 70 HP from a billet rail plug over a pipe plug in the banjo bolt. The valve had been leaking a little at high PSI. Also, my 03 was driving me crazy for a while, ....big injectors, two big cp3's, no rail relief, and when you would hammer on throttle and let off fast it would want to go, and then after 2 seconds it would fall off. Maybe the best is to have relief valve for everyday day driving and put the rail plug in for race only. The best thing would be to see what PSI number is the breaking point and build a rail relief that will consistently work there, allright Don, get to work, lol!
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Mine does the same thing with big injectors and twin cp3s, but it only happens every once in a great while, usually when I'm rolling into the gas, not full throttle, but have to lift quickly. I'm assuming it's built up pressure being forced through the injectors. You're probably right that a valve should be used for DD and then could be capped for competition.

Jared
 
im not a cr guy so this is a shot in the dark but there are lots of small prv's in that pressure range in the oil n gas industry. i was just scanning highpressure.com i have no idea about price but its an option.
 
Yeah, but wouldn't a injector hold up longer?

Or modding the valve to put the spring inside a stainless tube.
 
Tohya said:
Yeah, but wouldn't a injector hold up longer?

Or modding the valve to put the spring inside a stainless tube.
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the problem isn't the housing... it's the valve itself... we're talking 26-28,000psi... that's going to cut a groove a lot quicker than the 18ish thousand PSI of a single pop injection system
 
For me, the problem is more the track then daily driving. At the end of the track when I suddenly let off from WOT, that's the most likely time for me to get a pressure spike. Rolling off the throttle, can help, but at some tracks you need all the room you have to get stopped.

Paul
 
conk said:
I shimed mine with the same size shim like in the ppe kit for the dmaxes and I just had a local machine shop make me a "T" block to scerw into the rail so I can have my feed line and relief valve in place
Click to expand...

Pics please and more info on cost? I also run a dual feed line.

Jared
 
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