4 rockers are different

[Snake]

Out side today geting ready to put things away for winter:angry7:cleaning out the shead to make room.I grab up my old rockers and shafts from my 318 remember how i am haveing a tick problim.i lined up the right side shaft and rockers and all are the same height the rockers that is but on the left there are 4 rockers that are not the same there longer.So if i put the longer ones against the ones on the right side I can see there not the same.The outher 4 that are shorter match the same size as the right side.Do I have 4 that are wrong.Here are a pic hope you can see what I mean.Any thoughts.Right now I have the shafts and rockers from my 360 in the 318 thinking that my of cured my tick, not still there.any thoughts of why 4 are different.

 

[Snake]

bump

 

[1wild&crazyguy]

Sorry , I can't tell sht from the pick, point them out.

 

[Snake]

Ok the shaft on the left count the first 4 from the top there the 4 that are taller than the rest.The right side shaft are all the same and the bottom 4 on the left shaft are the same size as the right shaft.

 

[doktor_x]

It may be a trick of the lighting, but it looks to me like the five rockers from the right on the top shaft are longer overall. The critical dimension is from shaft centerline to the point of contact with valve tip as it relates to distance from shaft centerline to the pushrod contact point.

 

[Snake]

Took a few more pics when I slide them on the shafts all looks good they line up fine,maybe I am off my rocker.

 

[needsaresto]

Impossible to tell. Break out the digital calipers and start measuring...

 

[1wild&crazyguy]

maybe some are 340 era rockers that are beefier.

I have a 70 318 that has the same BS, taller looking rockers.
These rockers vary in there looks, inconsistent in shape.
heres a pic...

 

[swedefish]

Odd.
Something that I did notice is that the "cup" in the rockers (that is off center)
Shouldn´t they (the cup) be mounted towards each other for the cylinders intake resp. exhaust, but maybe the pics playing a trick with me.
Sorry don´t quite know how to explain what I mean, LOL

 

[sbknut]

Odd.
Something that I did notice is that the "cup" in the rockers (that is off center)
Shouldn´t they (the cup) be mounted towards each other for the cylinders intake resp. exhaust, but maybe the pics playing a trick with me.
Sorry don´t quite know how to explain what I mean, LOL

Looks like all the lefts are on one shaft all the rights on the other. Not the first time for this mistake.

 

[sbknut]

Impossible to tell. Break out the digital calipers and start measuring...

I find the only way to accurately select rockers is with a dial indicator and light springs on the valves. I just checked a mocked up 318 stock valve train that only produced .358" lift at the valve.

 

[grumpuscreature]

Yep, all the rockers with a left offset pushrod cup are on the same shaft and the same for the right offsets. Think it should be RLRLRLRL front to rear on the passenger side and LRLRLRLR front to rear on the driver's side.

 

[70aarcuda]

Yep, all the rockers with a left offset pushrod cup are on the same shaft and the same for the right offsets. Think it should be RLRLRLRL front to rear on the passenger side and LRLRLRLR front to rear on the driver's side.

left and right refer to each cylinder not the side of the engine.

 

[moparisbest]

if you guys look close i seen this rite off the four on the end are clearly different

 

[fishy68]

I can see they are different style but it may not make a difference. Maybe some are a HD type and others a standard car type. Only way to know for sure is use a dial indicator to check the pre-load. But the arrangement does make a difference cause if their not arranged right you'll have some pushrods at a bad angle and the rocker won't ride directly on top of the valve stem. It'll be off to the side of the stem. That's easy to tell just by looking at them. It's really hard to tell the arrangement in the pics but I don't think it looks right.

 

[mullinax95]

If you can swing it buy a set of new ones or nicer roller rockers. I had two rockers that the push rod punch through the stock type rocker. So I don't trust them with a higher lift cam any longer. I was running the correct length push rods too.

 

[1wild&crazyguy]

What's the shaft diameter between bb & sb.

 

[swedefish]

Looks like all the lefts are on one shaft all the rights on the other. Not the first time for this mistake.

I mixed up two rockers once with the result that the oiling holes in the shaft didn´t align with the rockers and there were signs of wear between the pushrod and rockers (dry powder of metall ).

 

[Snake]

There on the engine right, thoes pics were just a mock up.just found it odd.

 

[swedefish]

There on the engine right, thoes pics were just a mock up.just found it odd.

Ok, I see, that thought was in my mind too.
You did have an issue of tapping from the engine?
Still got it?

 

[Snake]

Well I took the 360 rockers out and put the 318 back in ,its there but not as loud as it was.everyone says to still get different push rods and adjustable rockers.Still thinking of installing the MP 4452992 cam in the 318,and use the 280-480 comp in my 360 next year.Thanks Swedefish.PS nice ride there.

 

[swedefish]

Well I took the 360 rockers out and put the 318 back in ,its there but not as loud as it was.everyone says to still get different push rods and adjustable rockers.Still thinking of installing the MP 4452992 cam in the 318,and use the 280-480 comp in my 360 next year.Thanks Swedefish.PS nice ride there.

Thanks, appreciate it :thumbup: