New to Diesels & I have questions.
 

Hi all,
As you can tell from the subject line, diesels are new to me. Back in my single days (25 yrs ago), I built several HP gas engines. My favorite was the 455 HO /Tri-Power/4sp in my '70' GTO.
I have a 95 12v, that is bone stock & I've been trying to educate myself here & at other sites but still have questions, so of them are:
1) What & where is the "start wheel" & what does it adjust?
2) What is acceptable & what is dangerous EGT? (I understand what happens if too high)
3) What changes can I make to pick up 50 or so hp with the factory equipment?

Thanks in advance for your suggestions.
Dan

personally unless you like smoke i would leave the star wheel alone but on top of the afc housing there is a allen plug take it out(taking care not to drop the sealing washer) and adjust star wheel to the front of the truck...egt's i wouldn't want it above 1200 degrees for long periods of time but less would be better....need more info on the last question. are you trying to get away from buying anything?

---AutoMerged DoublePost---

also i always plug off the waste gate hose on all my trucks...but thats just me

---AutoMerged DoublePost---

the star wheel is for pre boost but most higher modifications require you to tighten it back up do to all the low end fuel going straight out the tail pipe

<quote> are you trying to get away from buying anything? </quote>
No, just trying to learn what can be done with what the factory gave us.

<quote>also i always plug off the waste gate hose on all my trucks...but thats just me</quote>

Why? What's the advantages/dis-advantages? I have no turbo experience either, guess I'm a real newbie!:tttt:

don't plug the gate, boost elbows are cheep and a much better choice.

Mod your afc, grind your own plate, and shim your gov springs ... thats enough fuel for way more than 50rwhp increase over stock. And its all free

okay here goes...on a bone stock truck i plug the wastegate just to get all the turbo has to offer for cleaning up this new found fuel...run the star wheel all the way to the front as far as i can get it just to get all the low end fuel it can so the afc doesnt pull fuel away so easy....grind the fuel plate to the shape of whatever # you like a #100 plate is easy....timing to around 16-17 degrees....and turn in the fuel adjustment screw under the cover on the rear of the pump....all this can be done at no cost just knowledge...you will have a pretty good running truck with all this done

---AutoMerged DoublePost---

IMO i would just buy gov springs and save yourself the greef but thats just me...boost elbows are okay too but not free

Thanks guys,
Between your answers and some links I've found here, I've pretty much had my questions answered. This link is a really good one for understanding the AFC.

:tu:
Dan

Spend $20 or so on a boost elbow or overspeed the charger :humm:

I would take care of the kdp issue first.

straight pipe it and turn up the pump grind your fuel plate and see what happens

I will agree with that one. Never owned one myself, but from what I've seen I would not want to need a new engine just because I didn't fix the KDP. (Killer Dowel Pin)

Well tap the pin yes. And I would listen to 94 12valve, dont plug the wastegate. Like he said 20 bucks is cheaper than a broken charger and then possible motor issues depending on how the charger like to disasemble itself.

have either of you blew a turbo charger?

nope ... prob cuz we know how to use a wategate

OUCH!!!:ouch:

Yeah that may have been a little harsh, my bad :c:

Well when people wanna argue that may be what it takes...

yeah good point you dont want to overspeed it :tu:

I agree a boost elbow is cheap insurance, however on a stock turbo I just plug it off. Never had a problem with overboosting on a stock turbo. Also you can slide fuel plate full forward which will help quite a bit until you decide to grind or replace it. You can play around with the star wheel to control pre-boost fueling, but I wouldn't mess with the smoke screw unless you really know what your doing. You can put the fire out if you back it out to far and it takes very little to do it. The more you turn it in the more its gonna load up (smoke). which is just a waste of fuel and money.

If your waste is allowed to open it can help dump some unwanted heat out of your engine to keep your egt's down.

I know this may be harsh but you have no idea what your talking about. Your post if full of untrue material.
1. You obviously havent had very much fuel to a stocker.
2. Starwheel is not pre-boost adjustment
3. The "smoke" screw is actually the pre-boost adjustment and in is more fuel before boost and is what puts the fire out "if" you have the fuel to do so.

Thanks to all. I took it to Brian Vannest and he did a very minor tune-up. A little fuel on the star wheel & shoved the stock plate forward a little. I now have all the power that I really need (without going nuts). Maybe if I was 20 again, I would be looking for more but, most of my tire smoking days left when I sold my goat after 22 years. :jump:

Thanks again guys :c:
Dan

as long has your not pushing to much fuel pluging the wastgate is fine you just need to watch how much boost your pushing mine is pluged have a number 10 fuel plate slid forward afe air cleaner and i get to 38 psi of boost at peak. with the little bit that he is doing he will be fine just pluging it off

drive it for a few days....you will be reposting for more power!:w2: once u have the power bug it only gets worse:choochoo: O and i dont recommend blocking the wastegate... engine doesnt run good on turbo parts.... its not guaranteed but why risk it?

Well thanks mister Know-it-all. Did you even read the origional post.
1. I believe he's got a bone stocker which doesn't get too much fuel
and he wanted info on what he could do with what the factory gave him.
2. starwheel is technically boost-fuel curve adjustment but if turned forward enough has
direct effect on pre-boost fuel under throttle far-far-far greater than smoke screw
which is how most of us drive around, you know, with the pedal on the right depressed.
3. smoke screw is pre-boost fuel adjustment, and yes in is more fuel, however backing out
the screw cuts fuel and if turned far enough will put the fire out due to lack of fuel.
a little throttle won't even fire it off with a properly adjusted afc unless housing is slid
forward but than again we were talking about a bone stocker weren't we.

Didn't want to overwhelm the newbie with too much info at one time,he was just lookin for a few ponies. By the way did you learn anything new? Keep readin the post on here, lots of good info on here. this is just day 1 stuff mister helper! oh yeah, and sorry about the harsh
return.

---AutoMerged DoublePost---

did i miss something, who was arguing?:humm: