ok, check this out...92 CTD, 16 cm turbo housing and pump barely turned up is all ive done so far, i have a set of 50 horse POD injectors but i havent installed them yet. I was just wondering what i could expect??? Should i turn the pump up more??? is it a good idea to install them or what? Are the EGT's going to stay ok?? Any help on this matter will really help.
Thanks

Jason

 

Expect a LOT! I've also got the 16cm housing, POD's, and 4" exhaust back to stacks. Ran around on this setup for a long time on the stock 3" exhaust tho. Expect smoke. Prolly have to bump your timing up too, that's one of the next things on my list. I'm 1.5 turns on the full fuel screw, and have played a bunch with the afc pin and spring. They are fun, with the 3" exhaust, most I could get was 1250* pre-turbo pulling my car up a long grade at 80mph, just to see what it'd do. Haven't pulled yet with big exhaust. Hope this answers your question...go for it and look in the mirror at the smoke and the big grin on your face.

Brian

 

thanks for the help. what all have you done to the pin and the spring???

 

and at $3.00 a gallon a slight sinking feeling in your stomach.

 

Most people play with their AFC spring and fuel pin to try to adjust the smoke level and more power. Either way, when I had my POD's, they would smoke but I could adjust a little bit.

I'd put them in and see if you want more power. I would suggest turning up the timing like suggested also.

 

I say no if you don't have a boost and pyro gauge installed yet. Boost/pyro first, then bombs.

 

I'm gonna go with bgilbert here ...... the pump tweaks and the POD's WILL put you in the red zone for EGT's....you NEED at very least, a pyro for you're own safety....

pb....

 

The good pastor is right-do the gauges and then upgrades elsewhere! I have been hitting the 1250+ when pulling my travel trailer and I don't like it to run that warm-so back out of the pedal a bit!

 

I have POD's, tweaked pump, and 3.5 exhaust and have never had a problem with EGT's....not even close. If you have the smaller turbo housing and stock exhaust then you'll definitley want to make sure you have a pyrometer. POD's can handle a lot of fuel so give it to'em. I had a mechanic friend install my POD's and I know he adjusted the timing and cranked the power adj screw another full turn.

 

Tweak the pump some more, you'll have EGT issues.

 

CAUTION::
Where the temperature sensor is placed in the exhaust stream can have a big effect on the EGT reading.

 

i have PODs and a tweaked pump and i can get it hot REALLY hot if i want to but i also dont have an intercooler. but it is a must to have a pyro with PODs i think that way the heat can be controled with the right foot

 

Ok..I'm curious and still learning. The PO on my rig put it right before the bend of the exhaust down pipe next two where it couples on the turbo. I know many people put it right at the exhaust manifold but what type of variation in EGT are we talking about. Without a load it runs around 600F and with 8000lbs load the most I've seen is 900F.

Curious where the best place is to locate it and how much variation would I see compared to where I'm currently set.

 

There can be as much as 350*F difference between a pre-turbo pyrometer and a post-turbo (in the downpipe, like you and I have) pyro. So, if 1250 is the safe acceptable PRE turbo limit for continuous duty, 900 is pushing pretty close for a post turbo number---follow me? In my experience, the smaller the exhaust housing, the bigger the difference. This is not set in stone, just what I've observed. I'm moving my probe to the manifold as soon as I get an hour to myself, mostly 'cause I like to play with the loud pedal and that can cause temp spikes

g

 

Right on, Greg.

There is more pressure drop through the smaller housings, that's why there's a bigger temp difference.