Boost issues?

[Lieutenant Dan]

That's exactly how mine was. Sticks out about the same as yours and is still wired.

 

[Streetgliderx]

You think the gauge is off that bad? How can I cure that? Cause I'm just about to call and order a 0-15 cause it looks weak on the 30lb gauge.

Here is my crappy video. Let's see how it works
http://youtu.be/EXUTEyYTPFA

 

[doghead]

You should not be exceeding 15 lbs of boost. More will definitely over temp.

Also, once you think you have it set where you like it, if you load the truck or drive up a big long hill, it will be too high in that case.

The fuel rate is load dependent and will vary.

10-12 psi is pretty safe.

Who wants to let off the throttle when trying to climb a hill?

 

[Lieutenant Dan]

I can easily peg my 15 psi gauge and only be around 1000° on pryo.....

 

[doghead]

Go up a hill.

 

[doghead]

Where is your pyrometer tip?

 

[Streetgliderx]

Mine is located in the rear bank pre-turbo. This is a brand new gauge from Hewitt. I wasn't expecting it to miss the pressure by much. I live in some hilly country and so far I can just relax the throttle and keep it around 1000-1100. It will however hit 1200 quick in a hard acceleration. I'm probably gonna drop a flat or three but for now it's fun to watch

 

[Floridianson]

Glider what is your Tac reading when you climb the hills?

 

[Streetgliderx]

I'll have to tell you in a day or so when my new tach cable gets here. Mine broke last week.

 

[brianp454]

I think Lt Dan and I have similar results. It looks like maybe your IP was tweaked up a bit prior to bypassing the FDC so it naturally may have responded a bit more with excess fuel. Can you make a video of you driving that shows the exhaust?

The general rule with bypassing the FDC says you can turn the fuel up a bit and the droop screw down. I've only bypassed the FDC and did not mess with the fuel and it seems like I may be able to over-fuel\get black smoke if I jam the 'throttle' hard at lower RPM's. AT higher RPM's I think it can take more fuel as it rarely gets over 14 psi and 1150 deg. F. I have a K thermocouple pre-turbo and I tried different thermocouples and even calibrated gages and got the same results. I have a youtube video showing the smoke after bypassing the FDC.

I'll have to tell you in a day or so when my new tach cable gets here. Mine broke last week.

 

[Streetgliderx]

Yeah mines a Hewitt K thermo pre turbo. I can hit 1200* any time I wish right now. It comes on quick. I may also buy a 15lb gauge cause I'd like to see the full range used. I will get the wife to chase me around and make a video soon

 

[jbayer]

I'll have to tell you in a day or so when my new tach cable gets here. Mine broke last week.

So can we take that mean you really don't know how many RPM'S your turning at these temps/ Lbs boost?

 

[Streetgliderx]

At the moment no I do not. I do know that before the cable broke my truck would turn a consistent 2700 no load. I could easily hit 2600 driving and hold it. To my knowledge the FDC bypass won't change the governor settings? But when my new cable arrives this week I'll be sure to get new video

 

[Ryan123]

Ive been thinking about swapping in a detroit for a long time now. However I just said WHAT THE HECK ill just see how much this little baby can put out. so yesterday I went and got a boost gauge, already had a good digital pyro. I CRANKED the fuel up like 7 flats of the nut. she ran very well but still had some wiggle room. So I cranked it another 4-5 flats and now i get 20 psi of boost at 1150 EGT smack dab behind the turbh and I had already cranked the fuel up a bit before that. Anyone every put a big turbo on a deuce? like a detroit diesel turbo much like the one pictured?This turbo is AT LEAST twice as big as the deuce hair dryer. Im thinking of doing that with an Air to water cooler setup from here http://www.frozenboost.com/product_...=1007&osCsid=cf57e9e804308d03b551f49a0696078f. should be able to do a cable on the FDC to control boost and egt's with an aftercooler it should keep the egts down and be able to produce around 30 psi pretty easy. much more than that I think I might blow the head off the poor girl.

 

[jbayer]

Cant wait to see the outcome!opcorn:

 

[Streetgliderx]

I got 4 turbos of various sizes sittin round. I'd be interested to see how a bigger turbo plays out. I also wonder how well a good ole C turbo can preform if it was intercooled? If I knew I could just intercool mine and turn it up a little more I'd be one coal Rollin SOB. cause I got some intercoolers and I can fab!!!

 

[Floridianson]

I'm not good on the ciphering but there has to be a limit on how much you realy can blow through a Deuce. Just because it's bigger don't mean it all can be used but see is believing I guess. Someone said the Deuce turbo's don't make much boost but it shure sounds like they do.

 

[doghead]

Let's not forget about the coolant controlled intake manifold.

All this has been covered in the past(many times). A bit of research may save you a bunch of time and money and effort.

I have to ask, what is the goal?

 

[Floridianson]

[QUOTE=doghead
I have to ask, what is the goal?

To tweek or not to tweek that is the question. I think there for I thunk.

 

[Lieutenant Dan]

Idk about a intercooler. There really is no room to put it unless your redoing the whole front end which to me is to much work. My truck right now runs freakin awesome. It will pull out faster then traffic from light to light. The highway is the problem. I drove to work this morning and 60 was it at about 2500 or so. I kept it at 55. Once I get my bigger tires I'll be golden.

I turned the fuel up about 6 flats last night. It smokes a little not like a diesel pickup with a chip. I can definitely flirt with 1200 now but only on a long hard hill. I think I can go up a bit more yet but I'm pretty happy with it no. It performs well and smokes enough to make me happy and the squiters not so happy lol.

I can't wait to lose 3000 lbs and bigger tires.....