Ford Muscle Forums : Ford Muscle Cars Tech Forum - View Single Post - 77 T-bird camshaft replacement (wiped lobe)
View Single Post
post #10 of (permalink) Old 08-04-2016, 10:51 AM
PSIG
Registered User
 
Join Date: Jan 2008
Location: Seattle, WA area
Posts: 10,299
Re: 77 T-bird camshaft replacement (wiped lobe)

Quote:
Originally Posted by Mason81 View Post
I'll do exactly their procedure.
That's fine, but I would make one change. Unless you pre-set your ignition base timing accurately as they did, I would plan on checking timing as soon as the engine is running and stable at elevated rpm to avoid other damage during break-in.
Quote:
Originally Posted by Mason81 View Post
Question, I've driven about 5,000 miles like this with three oil changes in between. With the metal dust that came out, how worried am I that my bearings and journals will get scored as well???
They already are. The question is not if, but how much. With good filtering to keep larger particles out when it happened, and more filtering to keep new dislodged floaters out of the system, you may well be "okay". In the crankcase, particles like yours tend to stick in and on the metal surface, only to dislodge later. In other words, you will have issues to deal with one day during a rebuild (crank scoring, and accelerated wear in various places), but the engine may go quite a long time if the existing damage is not too severe. If signs are present or appear later that indicate excessive accumulated damage, then it's time to think about repair or replacement of parts or the whole engine. Excessive blow-by, low oil pressure, noise, etc. are common signs of that damage.

Besides your good move of multiple oil changes, common tricks are the magnets, and better filtration such as non-bypass filters, or oil filter inlet screens and dual-filter adapters. Dual filters permit the flow to reduce through each filter, to reduce the likelihood or degree of the filter's internal bypass valve opening, which allows unfiltered oil to bypass directly to the engine internals. Most racing filters do not use bypass valves for obvious reasons, but they are expensive.

David

-=≡ If it was easy everyone would do it ≡=-
[size=1]HotShotsJava.com Hot Shots Java Coffeehouse, Poulsbo ,WA fair trade and 100% organic. Voted best espresso and coffee![/size]
PSIG is offline  
 
 
For the best viewing experience please update your browser to Google Chrome