Quote:
Originally Posted by johnmharte
I feel like placing a recent posting to an epic thread is doing a disservice  ... but I had a quick question. APT is out of stock for the actuator and I only saw briefly a mention on page 21ish of an eBay actuator. I didn't quite see how that testing went. Were there any other sources for 433489-12 than APT? I'm starting the google finder of all things for that part number now.
I've bought a barely running 92 300D 2.5 and while going though the repair list, and having the intake/ect apart for cleaning, I might as well do the EGR delete.
So, I'm very sad if I can't get the actuator. |
I have a 91 without and 92 with the actuator mod... if the factory setup is working I would not hesitate to stay with it until it doesnt... the reason I say this is that the factory setup keeps the wastegate open for more of the running time then the manual actuator that is part of the mod... resulting in cooler average manifold temps and less spool up time on the turbo... that said I have not put a pyrometer on eather but I just put the head etc back on the 92 after major overheat of the engine and I was tweaking the full shut position on the mod actuator and was giving some serious thought to the reality of having the wastegate spring loaded shut at all times excepting those briefe periods when due to acceleration the manifold exceeds 14 psi...that said there is nothing inherently wrong with setting up the mod many big diesels are set up this way but the practical difference is that with the 602 engine we are dealing with aluminum heads that tend to be the weak link in the engine... hope this is some help ... just my experience and observation... best
by the by... as far as I know you can do the egr delete ... just blank off the port but leave the flapper and all vacuum lines connected and as far as I know the factory setup will work as the system does a brief close on the flapper after starting creating a artificial manifold vacuum condition ( which never exists in a diesel ) and as long as the computer sees this the wastegate system should function fine.