[T3] valve woes

[Keith Park]

Longer push rods totally change the valve train geometry, you can wipe out
the guides in a few hundred miles if its bad enough.  Jake raby did a really
nice writeup on valve train geometry but he went to facebook and it was
lost.  Berg may have a writeup on it too but basically you want the valve
stem and the adjuster in perfect line at half lift, and making sure you have
proper lift for your camshaft at that length of pushrod.

What I try to impress on everyone is that if something goes wrong you need
to fully understand it, a quarter inch change in pushrod length is HUGE...
something happened and you need to find out what it is and fix it, rather
than just shooting in the dark, which is costly in most cases.  My engines
don't last as long as they do because I never did something wrong, I sure
have, but correcting it properly and making sure its right as soon as
possible has been the key.

Keith


Top Notch Restorations
topnotch at nycap.rr.com 
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"


-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Fiesta Cranberry
Sent: Thursday, May 22, 2014 4:47 PM
To: type3-vwtype3.org at lists.vwtype3.org
Subject: Re: [T3] valve woes

Ground cams are a big mistake, you lose the hardness layer.  You can see if
this is a problem thru the sump though, look at the lobes.

We took off the oil filler plate, but there is a sort of another plate or
dome above that that blocks off most vision to the inside.  Lloyd says he
could see the lifters and cam lobe, and they looked OK.

What kind of damage, and how bad, would be caused by putting in longer
pushrods?

Lori


-- 
"I wrestled with reality for 36 years, and I'm happy to say I've finally
won out over it."
                                                  ---Elwood P. Dowd
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