Worn cam jornal

[James at ringsperformance.com]

In a few heads (NA and turbo) I've pulled drill burrs/chips out of that, and only that, rear hole.

Such burrs could cause maybe one of two problems:
--Reduced oil flow causes bearing (cam or head) wear
--Oil pressure pushes the burrs against the cam, and the burrs cut the bearing (cam only)

Note that the factory cams in these 100k+ heads showed no wear on any journal, even with the burrs.

Naturally, YMMV.

cu, James Marriott
'87 4kq (alias "late-B2 90q") with rare ersatz NG engine, 184k, being restored from rear-end total loss
'89 200q (MC1, ProconTen/no bag, 1.8 blah blah), 151k, already been un-totaled
Boise, ID, USA     http://www.webpak.net/~marriott/
www.ringsperformance.com

----- Original Message -----
From: <JShadzi at aol.com>
To: <DGraber460 at aol.com>; <jeg1976 at yahoo.com>
Cc: <quattro at audifans.com>; <urq at audifans.com>
Sent: Monday, June 02, 2003 1:24 PM
Subject: Re: Worn cam jornal


Jim, these get pretty buggered up over the years, I think you'll be ok, I wouldn't worry about it unless you actually notice a problem.

Javad

>The responses I've seen up to now say the head is not repairable. I don't know for sure, I just read that the cam journals are line bored, and not "redoable".
>
>Funny thing, I found the same thing when I put a big valve cam in my car (URQ WX). The rear most cam journal was grooved and worrisome. I smothed it out with various pads, and put it together, thinking what have I got to lose. So far no problem, but I don't think I would take the car cross country.
>Anyone else found this?
>
>Dennis
>Denver
>