Plate Question

[DBCooper]

I'm just trying to figure this thing out for myself. I slid the stock plate and saw a nice change in power but have to slide it back due to no guages yet and towing this weekend. I was just goofin' with the truck. My question is why would the stock plate produce higher egt than an aftermarket plate? Also, how do you know you have the boost signal restricted enough to the waste gate? I got a real light haze of smoke at WOT(restricted boost sigal), and was able to adjust the star wheel so just a hint of smoke right off idle with a heavy foot. Truck felt great, I just can't afford to melt it down. Any information is appreciated. Thanks

 

[RHARVEY]

I have heard of doing the same thing and have thought of doing it, but I needed some information before I slide the plate. What I was told from Mark of TST Products, is that the stock plate is not designed correctly to make the improvements at the right spots. And also something he told me that I can't remember exact but something to do with the an arm getting stuck on the stock plate due to the design when the plate is all the way forward. Someone help me, I forgot exactly what he did say. But I also talked to a mech. at a Cummins shop and he said that moving it forward a little won't hurt. But he also said to make sure to watch the guages. He again said that he knows of one guy that has had them install 3 motors, due to the fact that he takes the stock plate and it goes all the way forward. This in itself it not the problem, but he does not have guages to watch the EGT's and he melts the pistons(on all the motors).

I have thought about moving the plate forward a little to see what it would do, but I also have a 3" Freightliner pyro sitting on the dash! I think this is another question for Piers... .



Rick

 

[Forrest]

The stock plate moved forward will produce higher EGT than an aftermarket plate. 1st of all, your adding more fuel, so you get more EGT. But, when you move the stock plate forward, I think you're allowing more fuel over the entire RPM range. At lower RPM, this causes the big rise in EGT, especially while towing. Once the RPM gets up there, I don't know that you can get into EGT trouble. I think it's just the low RPM range that's the problem. This is true in my experience.



The aftermarket plates, in the lineup of #12 & #11, restrict the fueling @ low end but allow bunches more at the higher rpms. You can really see it when you look at the plates themselves. This way, you don't get high EGT at the low RPM range. The #10 is another story. As you've read, that baby was designed for competition. It's a big time fueler at low RPM. You can really see it when you look at the plate. It starts fueling the low RPM right away. Long winded, but my $. 02 from my end.

 

[DBCooper]

Thanks for the reply guys. I moved it back. Another couple of weeks isn't going to hurt me to wait for the right stuff. It was impressive for the money it cost

Dan