Question : lifter caps/cam carrier reassembly

[mythias]

i been replacing the gaskets(heads) on my dohc3.4L gp and i got it all apart and going back 2gether now, but i didn't understand where the lifter hold down tool(hoses) went 2keep 'em in place? i didn't use them on the disassembly? to my understanding they should all go back where they came off from?due to waer and wut not.
my question is- would it due any harm jus puttin them all back on?...even tho i mixt up the order in which they came off? 2my understanding they're all 35mm as well?? ...and does it have 2 be fuel line hose to keep the caps in place when i reaasemble? or can it be vaccume/washer fluid line? my source of info is a print-out from ALL DATA and a chilton...chilton says 5/16in.-exhaust and 7/32in.(5.5mm)-intake...but the all data says 3/16-exhaust and 5/32-intake?? which one?? and i been having difficulty finding a 7/32in. fuel line? let alone fuel lines in any of the sizes accept 5/16??? HELP!!!! ineed to get it up and runnin cuz i'm runnin out of time and money!?

[SappySE107]

Grammer, punctuation, and spelling do go a long way on public forums. This hurt my brain to read, please don't do it again.

The hoses are not needed. Get some thick assembly lube and the lifters will stay in their bores while you flip it over and set it on the carrier. That is the only way I have ever done it. Don't worry about the order if they aren't. it is best to do so, but these are not going to develop a wear pattern that is lobe specific, thanks to the notch cut on the base lobe. They spin regardless.

[mythias]

thanx ben. sorry about the spelling, punctuation, and grammer. i'll be conscious of it.

this will make it alot easier for me!

i'll have some questions about cam timing when i get there. so, you will see me again!

[pocket-rocket]

Grr.. I posted a reply to this two days ago and didn't notice it didn't take.

I was going to mention how the lifters in my cars have fallen out on disassembly so mine weren't in order and both cars have been fine for years. I was also going to mention it's not as important as far as lifter order goes like it is on a flat tappet engine.

[bszopi]

Grr.. I posted a reply to this two days ago and didn't notice it didn't take.

I was going to mention how the lifters in my cars have fallen out on disassembly so mine weren't in order and both cars have been fine for years. I was also going to mention it's not as important as far as lifter order goes like it is on a flat tappet engine.

Wierd, I remember reading your reply, yet I don't see it... Hmm...

[pocket-rocket]

Wierd, I remember reading your reply, yet I don't see it... Hmm...

I bet Ben wanted the credit so deleted my post, lol! j/k

[Schurkey]

it's not as important as far as lifter order goes like it is on a flat tappet engine.

The 3.4 IS a flat-tappet engine...but the valve springs are weak, and there's no additional load from the rocker arm ratio multiplying the valve spring force. So the cam lobe-to-lifter face loading is very light.

Any number of overhead-cam engines use select-thickness shims above the "buckets" (lifters) to adjust valve clearance. Obviously, there's no problem with keeping shims mated to a specific cam lobe on those engines. The GM 3.4 DTC is probably similar--if the parts aren't scored or pitted, mixing 'n' matching is likely OK.

[pocket-rocket]

The 3.4 IS a flat-tappet engine...but the valve springs are weak, and there's no additional load from the rocker arm ratio multiplying the valve spring force. So the cam lobe-to-lifter face loading is very light.

Any number of overhead-cam engines use select-thickness shims above the "buckets" (lifters) to adjust valve clearance. Obviously, there's no problem with keeping shims mated to a specific cam lobe on those engines. The GM 3.4 DTC is probably similar--if the parts aren't scored or pitted, mixing 'n' matching is likely OK.

You know what I meant (ie: traditional flat tappet, like in the old pushrod v6s and v8s...) Modern DOHC engines are pretty much in a class of their own as far as flat tappets goes.

[95SleeperAcheiva]

I still wanna know where these hoses come into play. I can't seem to get my brain around it. Only time I ever did cam carriers, the motor was out of the car, I put the carriers on with the motor upside down on a stand. That's how I planned to do it on the rednblack.

[pocket-rocket]

In your mind, take the valve cover off, then slip the hose in between the lifters. The sideways pressure from the hose keeps the lifters from falling out by wedging them in place.

[95SleeperAcheiva]

There's a gap between the lifters? I must be getting old. Last time I had a vlave cover off a DOHC was 2002-3, I should have remebered that.....