Thanks guys, I just didn't want to do damage to the engine between now and when my Dad helps me with the project. Tim --- randalpark@xxxxxxx wrote: > This is exactly correct and is the experience that I > have also had with > timing set failure. > > Paul W. > > -----Original Message----- > From: peter.engel@xxxxxxxxxxx > To: mailing-list@xxxxxxxxxxxxxxxx > Sent: Mon, 12 Feb 2007 7:18 PM > Subject: Re: IML: 73 440 > > Tim, > > The B/RB engines are most definitely > NON-interference engines. A chain > can > break or a sprocket strip while you're cruising down > the highway and the > engine will simply stop without damaging the valves > or piston tops. > > That's almost never how the failure happens though. > Stress on the > camshaft > sprocket teeth (they are what fail) is highest > during engine starting. > So > what happens is that while you're driving, the last > bits of nylon teeth > break off the aluminum sprocket but the chain is > held outward by > centrifugal > force and continues to drive the cam. Then, when you > shut the engine > off, > the chain sags and hangs loose around the crankshaft > sprocket. When you > try > to restart there's not enough "bite" between the > crankshaft sprocket > and the > chain so the crank spins but the cam stays put. > > You should be replacing the timing set at 100k miles > anyway since that > is > about the time that the nylon will start to break > off the cam sprocket. > Once the nylon starts to break off the shedding > process accelerate > rapidly. > > I've replaced a bunch of timing sets due to the "it > ran fine when I > shut it > off but now it won't start and it cranks funny" > phone call. > > Here's a sprocket from a 69 or 70 Charger 440. 110k > miles. Replaced the > timing set and off the owner went. > > http://bos-engel.com/imperial/sprocket.JPG > > Here's a shot of timing chain slack on my 66 New > Yorker. 97k miles and I > replaced it before it left me sit. > > http://bos-engel.com/MML/slack.jpg > > Pete in PA > > Date: Mon, 12 Feb 2007 07:40:25 -0800 (PST) > From: Tim Durrer <tdkd99@xxxxxxxxx> > Subject: IML: 73 440 > Reply-To: mailing-list@xxxxxxxxxxxxxxxx > Does anyone know for certain if a 73 440 is an > interference engine or not? > > I still debating on a timing chain and gear > replacement on my 73 with 101,000 miles. I recall > the > small block Chrysler engines would basically self > destruct if the cam sprocket stripped. > > Tim Durrer > 73 LeBaron Blue Sky > > > > > ----------------- http://www.imperialclub.com > ----------------- > This message was sent to you by the Imperial Mailing > List. Please > reply to mailing-list@xxxxxxxxxxxxxxxx and your > response will be > shared with everyone. Private messages (and > attachments) for the > Administrators should be sent to > webmaster@xxxxxxxxxxxxxxxx > To UN-SUBSCRIBE, go to > http://imperialclub.com/unsubscribe.htm > ________________________________________________________________________ > Check out the new AOL. Most comprehensive set of > free safety and > security tools, free access to millions of > high-quality videos from > across the web, free AOL Mail and more. > > > ----------------- http://www.imperialclub.com > ----------------- > This message was sent to you by the Imperial Mailing > List. Please > reply to mailing-list@xxxxxxxxxxxxxxxx and your > response will be > shared with everyone. Private messages (and > attachments) for the > Administrators should be sent to > webmaster@xxxxxxxxxxxxxxxx > To UN-SUBSCRIBE, go to > http://imperialclub.com/unsubscribe.htm > > ____________________________________________________________________________________ We won't tell. Get more on shows you hate to love (and love to hate): Yahoo! TV's Guilty Pleasures list. http://tv.yahoo.com/collections/265 ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm