Well...I am really going to hear it this time! I figured out why my ultradyne cam went flat graemlins/sad.gif graemlins/sad.gif graemlins/clonk.gif graemlins/angry.gif
I couldn't believe it myself tonight, this should be a lesson to all high school kids why they shouldn't smoke pot in high school :rolleyes:
I left the inner valve springs in one head! it just happens that all 4 flat lobes were on that side! I have absolutely no idea how i only removed the inner valve springs out of ONE HEAD, but it happened. I had 4 flat lobes and they were all on that same side. All of the lobes on the other side were perfect. So all of the cranking and cranking didn'r affect the cam at all! so if you use all the correct stuff like eos, good lube, preoiling etc.... in a bbc you really won't wipe yoru cam.....if you take out your inner valvesprings on BOTH heads! Well get your kicks while you can, cuz pretty soon the solid roller will be in, and i'll be over this whole fiasco. Hope i'm not getting alzheimers at age 24! Well if anyone did anything ridiculously stupid this week, i hope you feel better after reading this post!

Sorry to hear your troubles Cody. Things will get better!

It should make you feel better when you know what made something happen.

Ju

Hit the button too quick on the last post graemlins/clonk.gif

Just think...there's some people that want tp leaglize pot :eek:

oh man, that sucks...lesson learned, and you can always fix it. good luck with the new cam..i wonder if you left all your inner springs in, would your cam still go flat? or was it the spring pressure on the set of lobes for that side of the heads that had more strain than the other side...i know..weird question.

Just make sure you flush the heck outta that motor so nothing else gets damaged by the cam particles! Good luck!

teh block is getting hot tanked as we speak, new freeze plugs, and bearings, and the crank is getting polished. Yes the cam would of went flat with all the spirngs. THen all of the lobes would of went.

What did the crank journals and bearings look like? How about the oil pump housing & gears?

journals looked good, however one or two of them had a real small groove going around the length of both bearings, sorta lika a ring. i'm not taking any chances gonna just replace it all. Havne't looked in teh pump, but from a glance it looked all right. I think the cam grinded up into such small particles it didn't do much. But the peace of mind was worth it

And I've got a guy in another post thinking I'm some sort of anal retentive freak suggesting he break in his Comp XS274 on outers only. He should read cody's deal.

hey cody, $$it happens, just don't be sleepin with your eyes open! And I think you should run the same flat tappet cam unless its a 60%+ track car. Now you know the answer, the solution is clear. I went through the same stuff ( although the cam went away on my buddy when he had this 427- well after break-in incidentally). He couldn;t believe I didnt go SR. Hey, its a street ride, that does some long range work and a few nostalgic drags, and frankly, the 427 was completely redone for under $3k. An SR would have taken that to near 4K, and then the issue of my old 074 heads comes up, so ...6K. Naw, I'd take the gentle 120/340 spring pressures, good for well over 7ooo rpm.

BTW, after the first cam let go, we took the block to a wanda-wash, with long gun-barrel brushes and took a bath with it. Clean clean clean. I wonder where the got those nice 3' brushes. You could use them for the oil galleys. THEN we took the block into the shop for a throurogh cleaning!

Oops! Bad time for a brain fart when putting a motor together! smile.gif

At least you have some closure in your cam failure though.... thats more than I can say. :(