----- Original Message ----- From: "Jason Arroyo" <[EMAIL PROTECTED]>
To: "sdml" <shelby-dodge@sdml.org>
Sent: Monday, February 28, 2005 6:20 PM
Subject: SD> Sorting out this '89 Daytona T2
Hello all.
Ok we sorted out the Baro problem (code 13). No more check engine light.
Now I have some new bugs.
First off, my oil pressure gauge, when started up cold, reads nice good pressure, 1 mark past the middle. It moves a bit with the engine activity as it should. However, when the engine warms up, that all changes. When you back the load off of it, the needle falls waaaay below zero, and the "OIL LOW" light or whatever comes on. The engine sounds ok, at least it doesn't sound any different. If you rev on it or put the engine under load, the needle shoots back up to a healthy level. Is this just a sending unit or is this a specific kind of symptom of another problem?
Second, this is not a rebuild. Not exactly. It was rebuilt before with forged JE's and ported with knifed crank and Mopar performance main caps and bolts. And some other stuff. THe crank was overground past safe limits and oversize bearings were shoehorned into it. Since then, a replacement crank from a same-year same-style engine (T2) has been used. It was checked and balanced with the rods and pistons as one rotating assembly. New properly sized bearings were installed. The main caps and block journals were checked out ok. Now... I know that forged pistons are clacky, but I thought that was usually just when cold. What I am thinking I am hearing after three days of long driving is bearing slap, typically caused by a crushed or worn bearing. When I back off the throttle or, in park (no load), hold part throttle at the right point, I can hear the telltale chatter. Once I put load back on the engine or drop down to idle, the noise goes away. So maybe this is a faulty bearing?!
Maybe the guy who assembled the engine this second time around did it wrong? He's pretty careful and methodical about his engine assemblies and he's also the machinist so he uses precision tools... What are your thoughts on this?
-J Southern California Forced Induction 1989 Dodge Daytona Shelby Turbo II 1986 Chrysler Laser XE Turbo 1990 Plymouth Laser RS Turbo 1991 Mitsu Eclispe GSX Turbo(for $ale) 1990 VW Corrado G60 Supercharged (for $ale) 1984 Nissan 200SX Turbo 1985 Nissan 200SX Turbo 1983 Datsun 280ZX Turbo 1994 Ford Thunderbird LX 4.6L V8 (don't hate me)
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