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> Cam change, Changing the camshaft
Charles Freeborn
post Apr 6 2021, 09:15 PM
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Long story short I wiped a lobe on my cam. (took some bad advice from a T1 builder and used lifters that were not up to the task).

Hopefully I'll be able to split the cases and just pull the cam. Obviously if I find shrapnel in the sump it'll be a total teardown and clean out. It didn't run long with the erroneous lifters so I'm hoping the collateral damage is minimal.

Not really asking for help here - just venting... Sure wish I had a spare motor with season opener in 3 weeks .. tick tock..

Thx.
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mlindner
post Apr 7 2021, 03:52 AM
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Don't need to split case to pull cams. post picture of cams, oil.
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Charles Freeborn
post Apr 7 2021, 10:11 AM
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Reviewing the T4 video from Raby and I don't see how the cam can be removed without splitting cases. It's been decades since I've had a pushrod engine apart. Going to have to dig out my bell bottom overalls.


Hard to take pics of the cam - my boroscope took a poop. Will pour off oil and see what settled this am. When i dropped it I didn't see any major flakes, but we'll see.

Thx.
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GregAmy
post Apr 7 2021, 10:44 AM
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QUOTE(mlindner @ Apr 7 2021, 04:52 AM) *

Don't need to split case to pull cams.

Uhhhh, wut?

You know this is a Type IV 4-cylinder engine, yes?
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brant
post Apr 7 2021, 11:02 AM
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you'll have to split the cases.


hey.. years ago, I lost a cam and crank on a type4
and we always use zinc oil...

my builder had a fit when I brought the motor in.
I got a nice lecture...

I had decided to go to oil changes every other event on the engine
against the directions I was given to change oil EACH event

guess what.
I now religiously follow the "every event weekend" rule
and no contaminated oil damaging parts in the last 5 or so motors
you can't be too safe
don't know your maintenance routines... but a piece of advice that has served me well
brant
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914werke
post Apr 7 2021, 11:17 AM
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Is this failure related to a conversion to T1 lifters?
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Charles Freeborn
post Apr 7 2021, 11:27 AM
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QUOTE(914werke @ Apr 7 2021, 10:17 AM) *

Is this failure related to a conversion to T1 lifters?


To the best of my knowledge yes. I took some bad advice. It’s the second, possibly third thing he steered me wrong on. Undoing it all now.
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Charles Freeborn
post Apr 7 2021, 11:28 AM
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QUOTE(brant @ Apr 7 2021, 10:02 AM) *

you'll have to split the cases.


hey.. years ago, I lost a cam and crank on a type4
and we always use zinc oil...

my builder had a fit when I brought the motor in.
I got a nice lecture...

I had decided to go to oil changes every other event on the engine
against the directions I was given to change oil EACH event

guess what.
I now religiously follow the "every event weekend" rule
and no contaminated oil damaging parts in the last 5 or so motors
you can't be too safe
don't know your maintenance routines... but a piece of advice that has served me well
brant


I’m religious about fluids too. Every event. This was a mismatch of parts.
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Charles Freeborn
post Apr 7 2021, 11:29 AM
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QUOTE(GregAmy @ Apr 7 2021, 09:44 AM) *

QUOTE(mlindner @ Apr 7 2021, 04:52 AM) *

Don't need to split case to pull cams.

Uhhhh, wut?

You know this is a Type IV 4-cylinder engine, yes?


I think he mistook for a 6 (I wish..)
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mlindner
post Apr 7 2021, 01:36 PM
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Sorry Charles, was thing a six.
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Charles Freeborn
post Apr 7 2021, 06:17 PM
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QUOTE(mlindner @ Apr 7 2021, 12:36 PM) *

Sorry Charles, was thing a six.

No worries - as said, I wish.... I do have a '74 Targa 911 that will need cams, but that's a whole different ball of wax. It'll be an RS with MFI. Now that motor would be a hoot in a 914..
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Charles Freeborn
post Apr 7 2021, 08:16 PM
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Well, here's the carnage...
Attached ImageAttached Image

I must say though, the T4 is a pretty easy engine to work on. Thankfully the rest of the internals look great. I'm going to give it a fresh cam and button it back up. Now I'm taking a deep dive into cam timing... I've heard for decades all about it but never actually had to do one. This'll be a great learning tool. The Webcam folks have been great too.
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