Poking holes in my rockers

[Frank Mopar]

I was told Elgin Industries from others but can’t confirm so so don’t shoot

Honestly I returned mine before I even installed them

Man they measured thin and looked bad, read some reviews on Mopar forums confirmed


Anyways


Went with Sealed Power instead , rockers and shafts was impressed with measured thickness versus the factory Mopar rockers

Couple summers now

So far so good running the Comp Cams XE 275 HL and lifter set

Edelbrock E Street 75cc

Shift at 5400/5500

Mostly street car

Although my problem is not the rockers itself but I did notice the new set from Mancini is thinner then the old ones.

 

[miller]

my problem is not the rockers itself

Still, good to know. Aftermarket parts and pieces. I went through my stash of used, and abused stock steel rockers, for a good set. Mine's just a street ride.
Hope you get things sorted out. Great looking hot rod!!

 

[Frank Mopar]

Well the new springs are on. Of course the Comp Cam tech help didn’t say a word about interference with the seals so after the springs came I had to order the smaller p/c type seals.

Good thing read about the seal interference on the 440 Source website.

Shes ready to go now its up to mother nature about the weather tonight.

 

[PRHeads]

What part number spring did you get...... and do you know the actual installed height?

 

[66Satellite47]

Another thing that should be checked prior to final assembly is the spring retainer to valve guide clearance. If the guides are cut for small seals, the guide height may be lowered to accept a high lift cam. Guide to retainer needs to be checked.

 

[Frank Mopar]

What part number spring did you get...... and do you know the actual installed height?

Springs are Comp Cam 925-16 and the seals are 503-16.

These are the parts 440 Source uses to upgrade their heads to accommodate bigger cams. My 507/510 lift is right on the edge with the stock parts they use.

So three rounds last night and so far so good. Tuesday night we will give it a go again.

 

[PRHeads]

How high are you revving it?

 

[PRHeads]

Another thing that should be checked prior to final assembly is the spring retainer to valve guide clearance. If the guides are cut for small seals, the guide height may be lowered to accept a high lift cam. Guide to retainer needs to be checked.

He’s using stealth heads....... there’s plenty of retainer-to-guide clearance on those.

 

[Frank Mopar]

How high are you revving it?

Shift 5400. Traps out at 56-5700

 

[66Satellite47]

He’s using stealth heads....... there’s plenty of retainer-to-guide clearance on those.

OK, but I like to check the things I can.

 

[Frank Mopar]

Update:

Ten runs and zero issues since I replaced my valve springs. Looking like my problem is solved.

Thanks for all the help! You put up some great info.

 

[1 Wild R/T]

Update:

Ten runs and zero issues since I replaced my valve springs. Looking like my problem is solved.

Thanks for all the help! You put up some great info.

So, now that you clearly have no further use for those springs why not box them up & send them to Dwayne (posts as PRHeads) so he can check how much tension they've lost.... Not that he needs more to do buttttt.....

 

[Frank Mopar]

If prheads is interested Ill send some of them out as a FYI. Just need an address.

 

[Frank Mopar]

Many many more rounds on the car since the valve springs were replaced. No problems. Looks like my issue is solved.

Thanks to all for the help.

 

[66Satellite47]

Having a valve spring pressure test tool tells a lot. I like to test every spring for pressure at the installed height and adjust the height to get the desired seat pressure, then check open pressure @ actual valve lift. With the baseline, I can see if the springs are going away.