delta cam rocker arms trashed

[toomanyfords]

well i just got off the phone with ken from delta cams, and maybe im just easily convinced (why the snap on guy loves me), but hes got me thinkin that one head is cast different then the other side and that I need a longer pushrod for one side. He does admit to having seen bad rockers, but never all one one shaft and none on the other. Although he did say he has no problem standing behind his product and will warranty them but doesn't think its going to fix anything, and even offered to send me longer pushrods at no charge. So what I might do is get one of them pushrod measurer thingys and do it up so I don't have to tear this thing apart again. Opinions welcome and appreciated. thanks again

and one other thing he suggested is just jumping .30 longer on that one side and seeing what happens, doesnt sound like the best idea to me

 

[jd4242]

I would doubt if maching of a head whould cause this.yes it makes a difference in size but you have .140 ish of movement in the lifters so basically .070 either way before you get out the sweet spot in the lifter.for a stock grind cam this shouldnt make any difference,its when you have a more radical cam that you get noise from not properly measured pushrods.you can go .030 either way and still be safe.if you ask me they arent heat treating or the ratio from grinding them causes this problem.they told me the same thing when they sent me a new shaft and i replaced it and now both sides are worn,the side i didnt replace is worse.so for them to say they havent heard of a whole shaft getting worn is BS,i still have it in my garge,why would i have three! If you search on here there are a couple threads and a couple over on RPS.ps im not the only one thats has had there rockers break on me either.

 

[jd4242]

Page two has his wear and this was very low miles
Noisy ValveTrain-OHV...........Delta Rockers?

 

[toomanyfords]

So do you think it would be worth it to order a pushrod measuremenr gauge and wait for that to get here just to be sure there right, or just orser smith bros rods in stock length and sealed power rocker arms and call it a day? Thanks

 

[jd4242]

So do you think it would be worth it to order a pushrod measuremenr gauge and wait for that to get here just to be sure there right, or just orser smith bros rods in stock length and sealed power rocker arms and call it a day? Thanks

Im a very nice, benefit of doubt,let you to rectify the situation kind of guy but this is thier third strike with me so they are out.im not playing this,we will replace them BS with my thousands of dollar motor anymore.so if it was me i would pull the rockers off the shaft and put the rockers/pushrods and a bill for two sets of valve cover gaskets in a box and send it back for a refund!!but thats just me,i have a set and a half,you have a set,dono has a set and someone else has a set,that is all trashed....its your call.
Ps rockauto has stock pushrods also

 

[Xeek]

i was one of the smart ones that went with sealed power rockers the first go around. brandon is the other.
DEFINITELY get the sealed power rockers. on rockauto i paid $149.15 at the time for 12.
then get yourself a pushrod measuring tool from smith pros (Smith Brothers Pushrods).
you should be able to tell them what engine its for and thatll be what you need.

once you measure your pushrods. and find out 100% thats the size you need. post it here. i have a set i took out after 200 miles that were to short. i doubt theyd work, but we'll see
ill wait to see what size you need before telling you what mine are(just so your brain doesnt do everything in its power to MAKE yours that size just for a cheaper then retail set )

[/QUOTE]

yes. those are my sealed powers on the top. bottom is jds spare shaft of delta crap.
even the oil holes on the sides of the rockers are slightly bigger i think

 

[jd4242]

i was one of the smart ones that went with sealed power rockers the first go around. brandon is the other.
DEFINITELY get the sealed power rockers. on rockauto i paid $149.15 at the time for 12.
then get yourself a pushrod measuring tool from smith pros (http://www.pushrods.net/).
you should be able to tell them what engine its for and thatll be what you need.

once you measure your pushrods. and find out 100% thats the size you need. post it here. i have a set i took out after 200 miles that were to short. i doubt theyd work, but we'll see
ill wait to see what size you need before telling you what mine are(just so your brain doesnt do everything in its power to MAKE yours that size just for a cheaper then retail set )





yes. those are my sealed powers on the top. bottom is jds spare shaft of delta crap.
even the oil holes on the sides of the rockers are slightly bigger i think

His are stock size,yours wont work.send them back to smithbro,they will charge you a stocking fee but will refund your money,least your get something.ps i think those would have worked fine,its just those lifters and cam thats makes small size differences more noticeable

 

[Xeek]

yea im 99% sure they wont work for him. but you never know.
id rather sell them to someone at a discount if they need them.

 

[toomanyfords]

thanks a lot for all your help guys, I'm gonna order rockers right now and I will call smith bros tomorow to get a gauge. I was looking at the comp camps ones on summit but with so many factors in ball diameter and thickness and whatnot Ill leave it up to smith bros. I should have done all this today but I came home from work and dosed off watching tv. Rockauto here we come. I guess when I get my measuring tool bolt the heads up with old gaskets and a couple old bolts and new rocker arms and start measuring correct?
I would bolt them down with new gaskets and /ew bolts but I think it would be easier to measure with the intake off?

 

[Xeek]

completely assemble it. you cant just throw things on there cause them the length would be wrong. just leave off the upper intake and valve covers.
install the tool and tighten down the rocker arm rod. and theres like 3 adjusting nuts on the tool and you just screw them to tighten it up.

im not sure if theres a certain few or requirement on how many you measure. but i think jd measured 2 on each side. just to double check

 

[toomanyfords]

I didnt know if you could still measure them without being able to see the lifter for further adjustment of the pushrod tool, but if it can be done Id rather it be completely together too.
If I end up measuring the same for both sides Im gonna call the guy at delta cams and tell him hes full of crap and just doesn't want to admit they sell crappy rocker arms.
So once I get measurements don't I have to add .030 for preload? Or just tell smith bros and they can do all that math for me
thanks

 

[Xeek]

If everything's installed the pushrod will fal right onto the lifter. Then its just a matter of adjusting til the rocker is tight.
I know you add the load to your final measurement, jd knows how much, I'm not surre.

 

[jd4242]

If everything is stock then all he needs a pushrods that are 5.475,thats stock size.if you order a measuring rod that size needs to fall in the middle of the addjustment.to just check to see if one head is decked or machined all you need to measure is lowest point on the cam(base) to rocker.just tighten it till you feel pressure on the lifter.then you can take 5.475 and minus it from that measurement and your find how much preload stock pushrods use,i cant find my thread but im pretty sure the plunger travel on my lifters was around.120-.140 so you should have about .060-.070 of preload give or take alittle.so the measurements you take with no preload(witch is very hard to tell) should be around 5.415-5.405ish.but none of this matter as i said your head would have to be far off .040-.060 and if that was the case your motor would run like crap and nock. Every .020 you shave off a head increases compression by a half point so one head would uave like 11:1 wile the other was 9:1(stock) you would get detonation and pinging.what im saying is even if a head was off it wouldnt be off this much at all and if it was it wouldnt run right.lifters are made to take up slack and differences to a point so this wear should never happen even if you ran a .040 short pushrod especially on a heat treated hardened rocker!even stock ones only wear because of bad oil design so they wear down and lifter become sticky and worn then it becomes to the limit and starts to tap/smack,then its all down hill from there.
PS.people like to run different amout off preload,i say half,many will say less of more.also this was awile ago and cant find my measurements and different lifters,wear (cam,lifters)and lifter plunger is filled or deflated will change all this

 

[toomanyfords]

so you think I should roll the dice and order pushrods from smith bros in 5.475? I trust your opinion and understand what your saying about lifters being designed to take up that slack and how ****ty it would run if they were decked too much. I think the delta cams guy got in my head a little bit. If thats the case I need to bring home my caliper tomorow because I have two sets of pushrods laying around but I have no idea what size any of them are.

 

[toomanyfords]

and real quick just to add to my last post. the 5.475 is with stock (sealed power in my case) rocker arms and not the delta cams ones right?

 

[jd4242]

so you think I should roll the dice and order pushrods from smith bros in 5.475? I trust your opinion and understand what your saying about lifters being designed to take up that slack and how ****ty it would run if they were decked too much. I think the delta cams guy got in my head a little bit. If thats the case I need to bring home my caliper tomorow because I have two sets of pushrods laying around but I have no idea what size any of them are.

Everything is stock? Heads havent been touched?stock lifters? Yea you can measure what you have or the pushrods delta gave you,all that should be very close.mine are 5.475.you can go to rockauto and they should say the size of stock,think they sell three sizes that are all very close in size,think they do that for different head gaskets or lifter desine

 

[jd4242]

Just measured mine again and yep 5.475
Stock

And the measure tool,you can see it has plenty left to screw in and out

Now to sleepzz

 

[toomanyfords]

The heads are new from j and c cylinder head (installed 1500 miles ago with the new rocker arms from delta), i ordered new lifters before i even tore back into this, there stock sealed powers and are backordered from summit until next week. With that kind of down time before heads can go on i should just get a length tool. Ill call skith bros today and see whats up, i but i dont see why these new heads would he any different than stock. Then again the whole reason i tore back into this was because at cold start i had the ten second tapping from hell
Thanks again and now to work...

 

[jd4242]

Ever been in the bottom end? You may have a partially clogged oil screen.

 

[toomanyfords]

Had an oil pressure gauge hooked to it, 50 psi at cold start and still tapping, only from the right side. All started with the new heads and cheap ebay lifters. Oil changes have always been kept up with and engine has no signs of sludge build up. When i dumped some lucas in there it got a little quiter but still embarrasing as hell.