Re: [Amc-list] 258 engine mods

[Frank Swygert <farna@xxxxxxx>]

Use a stock 4.0L timing chain and gear set. They are a double roller 
design and the original oil slinger should fit. Say from a 1990 Jeep 
Cherokee, 2WD, 4.0L, whatever trans -- the parts stores ask for 
everything nowadays!

I'm more concerned that you're going through timing chains. Something is 
wrong -- it's NOT the chain! There should be a groove in the back of the 
timing gear that lines up with a hole in the cam, IIRC. Check this when 
the top gear is off and make sure the passages isn't blocked. Sometimes 
the groove(s) in the back of the gear have casting flash blocking (or 
partially blocking) them. I know the V-8s are that way, haven't taken a 
six apart in a few years. The TSM states that the timing chain is oiled 
"from the front camshaft bearing".

Even the old non-roller chain should last around 100K miles without 
wearing out.

The oil slinger is a cup shaped washer that fits on the end of the crank 
and covers the front seal. It helps keep oil off the back of the seal. I 
wouldn't want to run an engine on long trips without one. Some oil will 
seep from the front seal without it on long trips, short runs might not 
be noticeable.

--------------------

Date: Fri, 28 Dec 2007 09:27:07 -0600
Forwarded From: "Eddie Stakes" <eddiestakes@xxxxxxxxxxxxxxxxxxxx

From: steve       beer34@xxxxxxx
I read on one of the sites of yours that a cloyes double rolller chain is best for the 258 but it says that with this double roller the original oil slinger won't work. So what oil slinger do i use?  This would be much appreciated considering i have gone through 2 timining chains in 2000 miles. i had been useing the comp cams chain with rolllers that i think aren't "true double rollers". any help would be great.   thanks

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://www.amc-list.com/mailman/listinfo/amc-list