Cascade Crew

chevymad · Posted: Thu Jul 12, 2007 5:53 pm Post subject: Truck problems..

Well yesterday I fired up the truck and headed to work.. sounded like alot more valve noise then normal.. been noticing that the last 2 weeks.. but this time I started to get alot of misfires on the way.. So I drove the formula today..

Tonight I take the valve covers off.. both valves on cylinder # 4 barely moving and the rockers are loose. OH OH. I tighten them down and they still barely move. Looks like my cam went flat. So much for the old comp 262 XE. I figure I got about 70k miles out of her. I wonder if this is because of the oil problems we've been hearing about. I've been running Mobil 1 without additives because it was still the old SL rating. I think I'll start running the red stp from now on. Anyway, looks like a good excuse for a bigger Voodoo!! Very Happy

Schultzy89GTA · Posted: Thu Jul 12, 2007 6:01 pm Post subject: Re: Truck problems..

iansane · Posted: Thu Jul 12, 2007 10:29 pm Post subject:

I always hate when something like that happens.

But then I love the idea of getting new gofast parts. Very Happy

BigDaddyVu · Posted: Thu Jul 12, 2007 10:53 pm Post subject:

You did read about all lifters are made in china. There was a big article about that in Chevy High Performace magazine. Its about how there are not manufactured right and how it was hard to achieve zero lash after setting them. They don't hold pressure. something to do with the check valve in the lifters themselves. and most cam manufacters use them.

or you just have the wrong spring pressure.

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

Xophertony · Posted: Fri Jul 13, 2007 6:16 am Post subject:

"i know that. thats why I'm the teacher and you are the student. if you knew it and i didn't then you would be teaching me instead of me teaching you, and for a student to teach his teacher is presumptuous and rude"

- Willy Wonka and The Chocolate Factory. 1971

ok, it's official, i have worked at a video store WAY too long.

blue89 · Posted: Fri Jul 13, 2007 6:54 am Post subject:

thats a nice quote.

And I may add, that while the Johnny Depp Willy Wonka movie was darker and more to the book in that regard, its lameness surpassed itself.

Could there be any way that the lifter has completely failed and not the cam?

Quasi-Traction · Posted: Fri Jul 13, 2007 10:17 am Post subject:

That sucks about the cam B.

I'm coming up on an oil change in the 01' camaro real soon here. I have no idea if its a FT hydraulic or a Roller. Should I look for the old SL rated oil for it with a bottle of the Red STP or will it take the new rated (SM? SC?) oil just fine?

Xophertony · Posted: Fri Jul 13, 2007 1:40 pm Post subject:

i guess you will just have to take it apart and find out. Laughing

BigDaddyVu · Posted: Fri Jul 13, 2007 1:45 pm Post subject:

I wasn't teaching unless your learning.

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

I wasn't learning anything. Laughing

Quasi-Traction · Posted: Fri Jul 13, 2007 3:32 pm Post subject:

Oh, teach me your wisdom, Brandon,

Oh, master of GM engines!

(I'll bet my Gen III Buick is a Roller....)

BigDaddyVu · Posted: Fri Jul 13, 2007 3:51 pm Post subject:

I use castrol for stability. in automotive class we took many brands of oil test them from boiling and freezing temp and did a viscocity test. castrol out proform every one and pennzoil is the worst.

chevymad · Posted: Fri Jul 13, 2007 4:26 pm Post subject:

There's 2 lobes gone south, both on the same cylinder. I'm thinking its a combo of the oil and the lower rpm's i have now with the OD trans. Not as much splash going on at 1300rpm as there used to be at 2500. If it was bad metallurgy on the lifters or cam I dont think I'd have gotten 50k out of em. So definatly not a break-in or metal problem. I got good lifters last time too from work. Not a problem with the block either cause it had at least a good 250k miles on it and the original cam when I got it from dad's 1 ton. I was using SL rated Mobil 1 oil too. But for the first half of its life I used valvoline. Now I think I'll be using the red bottle with every change.

chevymad · Posted: Sat Jul 14, 2007 3:47 pm Post subject:

10 lobes nearly round, all of them showing wear. Several really bad lifters but not all the lifters showing that much wear. Also one broken rocker stud.. but it broke at the topmost thread of the stock type lock nut. so 3/4's of the nut was still engaged on the rocker. Weirdness. Looks like I need to pull the motor now. This one didnt last long. All that metal had to go somewhere and the oil pressure had dropped from 60psi to 40 by the time i got home.. So probably time for bearings and an oil pump. The motor's spotless inside and the heads still look awesome.. but makes me wonder bout mobil 1.

chevymad · Posted: Sun Jul 15, 2007 1:14 pm Post subject:

Carnage pics. Looks like these 3 lifters actually stopped spinning at some point. They were good stanadyne lifters too.

aaron_sK · Posted: Sun Jul 15, 2007 3:32 pm Post subject:

Holy cr*p dude. Mobile 1 did that? Shocked

chevymad · Posted: Sun Jul 15, 2007 4:16 pm Post subject:

Got the pan off today. Full of metallic grit. Bearings are wiped. Looks like another rebuild.

Quasi-Traction · Posted: Sun Jul 15, 2007 6:50 pm Post subject:

aw man, that sucks brandon....

Maybe its a sign you should put the 454 and TH400 from the stepside in there and drive the Formy to work?

Schultzy89GTA · Posted: Sun Jul 15, 2007 7:27 pm Post subject:

Nasty!

-Schultzy