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914World.com _ 914World Garage _ pushrod tube seal replacement

Posted by: bd1308 Jul 6 2005, 01:12 PM

alright alright how does this work. I *KNOW* i can change them if the rockers are off, but on my actual working engine they will be on. How do i change these?

and yes i know about the PP article.

i want to know how real people do these....

Posted by: Dave_Darling Jul 6 2005, 01:14 PM

Real people change the pushrod tube seals by removing the rocker arms first. It isn't hard...

--DD

Posted by: gklinger Jul 6 2005, 01:15 PM

real people remove the rockers...

Posted by: bd1308 Jul 6 2005, 01:17 PM

holy cow....and that doesnt disturb the valve adjudtment stuff

cause i still am not quite clear about the valve adjust ment....i cant see right bank if i'm on the left side?

Posted by: MattR Jul 6 2005, 01:23 PM

Just readjust the valves...

Make sure when you're putting the rockers back on you orient them correctly. They are held on with two C shaped mounts that are NOT symmetrical.

Posted by: solex Jul 6 2005, 01:24 PM

On my Type I engines I removed the head and added some aviation gasket to the surfaces of the push rod seals (The head and case side). This assumes the engine is out of the car.

Never had a leak from the push rods again. Not sure if this procedure is applicable to the Type IV, maybe some one can chime in.

Dan

Posted by: nebreitling Jul 6 2005, 01:26 PM

figure out the "mysteries of the valvetrain" before you go digging. yes, you'll need to readjust your valves afterwards. read the PP article a dozen times, you'll be fine.

oh -- and use jackstands when you're under the car.

Posted by: jasons Jul 6 2005, 01:26 PM

QUOTE (bd1308 @ Jul 6 2005, 11:17 AM)
holy cow....and that doesnt disturb the valve adjudtment stuff

cause i still am not quite clear about the valve adjust ment....i cant see right bank if i'm on the left side?

Yeah, you will have to do a valve adjustment after you take the rockers off. Its a good time to learn. As stated previously.... You also have to be aware of the orientation of the rocker shaft blocks. Its easy to put them in backwards and they are not of uniform thickness. Also, if you want to get a couple of the pushrod tubes out, you may have to lower the engine a few inches. I had to mine were damaged

Posted by: 914ghost Jul 6 2005, 01:30 PM

You DO actually have to lower the engine to get a couple of the tubes out all the way.
One little tip someone gave me is that you can slide the tube out of it's position and remove the seals from each end without actually taking the tube all the way out.
I'd rather take it all the way out and clean it well, but seems like it'd be an option.

Posted by: Mueller Jul 6 2005, 01:31 PM

you must have one of the worst memories than anyone I know

http://www.914world.com/bbs2/index.php?act=ST&f=2&t=29951&hl=seals

Posted by: bd1308 Jul 6 2005, 01:32 PM

ok...i'll whistle for Quail Man....he'll help me.

Posted by: "7" Jul 6 2005, 01:32 PM

The REAL problem is the PUSHRODS. If you can remove the pushrods without removing the rockers, you really do need a valve adjustment - big time.
-----
When you DO remove the rockers, lay everything out exactly as it came apart. Put it back together exactly the same way & your valve adjustment should not change.
Torque the nuts to 10 foot pounds.
Gud Luck

Posted by: Mueller Jul 6 2005, 01:32 PM

QUOTE (914ghost @ Jul 6 2005, 12:30 PM)
You DO actually have to lower the engine to get a couple of the tubes out all the way.
.

No you don't........I've done this repair with motor fully in the car a few times....

Posted by: tat2dphreak Jul 6 2005, 01:36 PM

pull the rockers, re-adjust after... not hard, man! not hard at all

Posted by: Jake Raby Jul 6 2005, 01:38 PM

My sealant handbook will go over this procedure step by step. I have already written this section of the handbook and I think it came out the best of any other part.

I should have the handbook published by the end of the month.

Posted by: Joe Ricard Jul 6 2005, 01:44 PM

QUOTE (Jake Raby @ Jul 6 2005, 11:38 AM)
My sealant handbook will go over this procedure step by step. I have already written this section of the handbook and I think it came out the best of any other part.

I should have the handbook published by the end of the month.

Don't matter. it's been written here several times. Works really well BTW. Maybe there should be a search of the subject before getting us all through the wringer again.

Britt I have all that tube sealed valve adjustment stuff done to the motor you want to get. Just get down here and get it.

Posted by: bd1308 Jul 6 2005, 01:48 PM

just gotta get some gas $$$...meaning i have to get paid. sell my PC or something

Posted by: Jake Raby Jul 6 2005, 01:52 PM

I know it has been explained here a few dozen times, because I have done it most of those times myself.

Most of the other tricks about sealing the engine have not though.

Posted by: tat2dphreak Jul 6 2005, 01:52 PM

jeez, can we take up a collection to get this poor kid some gas money to get down there to get that engine? pass the plate around or something?!

Posted by: bd1308 Jul 6 2005, 01:54 PM

okay. was just thinking out loud. sorry.

Posted by: Part Pricer Jul 6 2005, 02:15 PM

QUOTE (tat2dphreak @ Jul 6 2005, 03:52 PM)
jeez, can we take up a collection to get this poor kid some gas money to get down there to get that engine? pass the plate around or something?!

How about if we just have someone steal his keyboard(s) so we won't have to put up with this anymore?

Posted by: tat2dphreak Jul 6 2005, 02:18 PM

QUOTE (Paul Heery @ Jul 6 2005, 03:15 PM)

QUOTE (tat2dphreak @ Jul 6 2005, 03:52 PM)
jeez, can we take up a collection to get this poor kid some gas money to get down there to get that engine? :rolleyes: :lol: pass the plate around or something?!

How about if we just have someone steal his keyboard(s) so we won't have to put up with this anymore?

I keep thinking he'll discover Pr0n on the net, and ruin the keyboard himself...

Posted by: bondo Jul 6 2005, 02:21 PM

Valve adjustments are a routine maintenance item on 914s. You NEED to do it, pushrod tube seals or not. Just be glad the heads don't have to come off to change pushrod tube seals on a type IV. If you don't want to adjust valves, replace the engine with something that has hydraulic lifters. (late bus, subie, v8, etc.)