Roller rocker knocking noise

[Moparbuster]

Just installed comp ultra roller rockers on my 440 with factory cast heads couple weeks ago now I have slight knocking sound coming from top of motor do I have rockers adjusted wrong?

 

[69 GTX]

I would pull the valve covers and check you didn't have a jam nut come loose!

 

[Moparbuster]

None appear to be loose I didnt check with wrench though .do I check jam but or allen head

 

[69 GTX]

Both, also check lash on valves. Also clearance on pushrods going through the head.

 

[Moparbuster]

Both, also check lash on valves. Also clearance on pushrods going through the head.[/QUOTE

Both, also check lash on valves. Also clearance on pushrods going through the head.

 

[Moparbuster]

What's procedure if you dont mind me asking silly question mechanicing isn't my forte

 

[1 Wild R/T]

Any chance a rocker is hitting the valve cover or a baffle? Pretty common...

 

[Moparbuster]

Not hitting valve cover

 

[Frank Mopar]

How did you adjust them? Did you check the pushrod length?

 

[Moparbuster]

How did you adjust them? Did you check the pushrod length?

 

[Moparbuster]

Yes .I actually had someone else set preload I'm thinking maybe they didnt set right. Should I just loosen them all up and start over I have Howard's hydraulic roller cam and lifters my cuz is diesel mects a hanic not mopar mechanic I just spent over 1200$ on rocker arms and shafts and pushrods

 

[Frank Mopar]

Yes .I actually had someone else set preload I'm thinking maybe they didnt set right. Should I just loosen them all up and start over I have Howard's hydraulic roller cam and lifters my cuz is diesel mects a hanic not mopar mechanic I just spent over 1200$ on rocker arms and shafts and pushrods

Did you measure for pushrod length or just use the stock pushrods? That matters as far as the geometry is concerned.

 

[Frank Mopar]

https://www.compcams.com/valve-train-geometry

 

[Moparbuster]

Yes I had gold crane rocker arm setup but my dumbass being new to mopars had my shafts on upside down so I bought comp cams ultras they have cup style ends and gold crane had ball type so I had to get new pushrods the length is fine

 

[Moparbuster]

I did check length with appropriate measuring tool an adjustable pushrod I've put maybe 250 miles on since rockerarm swap

 

[BeepBeepRR]

Is it possible you have a bent push rod?

 

[Moparbuster]

Is it possible you have a bent push rod?

 

[Moparbuster]

Dont think so engine isn't missing or backfiring and will roast back tires at 35 mph. Just makes faint knocking sound from valve cover made me think rockers may be a little loose I am new at the mopar game but damn it's an expensive one lol

 

[BeepBeepRR]

Dont think so engine isn't missing or backfiring and will roast back tires at 35 mph. Just makes faint knocking sound from valve cover made me think rockers may be a little loose I am new at the mopar game but damn it's an expensive one lol

You can build a 350 small block for way less than a Mopar. Welcome to the money pit.

 

[Moparbuster]

I already know this have had many 400 small blocks that ran great but I figured 11 to 1 .40 over 440 should blow the chevy smallblocks away but.....