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To the best of my knowledge it has 4.10 rear gears. There has not been anything behind it since the short block went in. I wont let him tell we get this straightened out. I did not drive the truck when doing a fuel pressure test but dad was driving it and he said that it never dropped below 52 even when it falls on its face. He dont drive around at 80 ether but I have had a few stroker's and I tend to. never once had one having issue's getting there. It literally takes 5min to o from 2400rpm in 6th gear 2800. Rpm's are ruff not exact. Icp are stay right in line they never take a nose dive. Did have a bad ebp sensor changed that and it was no help. Has for the old block #7 piston was burnt on top and bottom. I suspect that to be do to the very excessive where. Maybe not. There is nothing at all to indicate why one side of the block was wore so bad other then at one point before it blew I fond the intake to y-pipe coupler loose on that side but I don't see how that could have caused it.
The program is no longer on there I put the truck back stock. Some one some where told him it would fix all the problems and if any of you guys have every tried to work with your father you understand why it was easier to do it and prove that it wouldn't fix it.
I have never ever seen the truck pull to 3500 rpm's all the strokes I have ever had would pull like a striped ape up to around 3600. this one just creeps up the rpm band. Think 2.2 s10 auto with 2.72 in the rear.
Oil and filter is fresh. don't have 200 miles on it put it in when we put in the short block.
thanks again guys this is driving me nutz.
Mike
Dude I don't know what world you came from but a 7.3 is not going to pull to 3600 rpm's when it makes peak power between 2600 and 2800.
Now I don't doubt you have a problem. To expect it to make power that high
is a pipe dream.
I will try it in the morning. after read reading my above post I thought I might need to add the fact that the small amount of black smoke coming out the tail pipe stops at the same point. It does come back once you drop down in the rpm band and try to run it back up but as soon as it hits the so called wall it stops smoking. I guess this was the main thing that made me think it was a fueling issue.
Do I need to disconnect the wast gate or the exhaust brake valve or both.
Mike
Pull the red WG tube and plug it onto one of the intake tube clamp bolts. Make sure the EBV is open and disconnect the wire to the solenoid at the pedestal connector.
Kevin I think you may have misunderstood my use of the word pull I mean it want hardly go past 3grand in any gear and want even make it there in 5th or 6th. I didn't mean pull as in plant your back in to the seat and fill the power in your hands.
yes I have a data logger. thanks again for the help guys.
I wonder if your "check valves" (little restrictors in the fuel lines just prior to the heads) are getting "clogged". You could still show good fuel pressure, but wouldn't have any in the heads.
Have you considered swapping in the old engine's HPOP? Maybe the IPR is stuck open.
Ok no I dont have a logger. It will not work on this truck. May not work at might be broke I will have check it on something else.
Back to the show I disconnected the ebv and the wastegate valve seams to be better but still cant get over 10# in 5th and 9 in 6th it is still running up the rpm band then around 23-2400 ir fill like you lifted you foot completely off the gas and then pressed it back down but only about 1/10 of the way. the boost is good until this point. The higher the gear you are in the lower it falls 5th or 6th and it falls to 4 or 5 #. Then creaps back up to the above numbers.
Off to call a buddy and see if I can use his scanner and try and log it.
First off did you check all the connections and make sure there is not a boost leak. Was the turbo changed when the engine was changed? The description you gave of the previous engine is an indication of it being dusted. If that's the case the turbo will be dusted as well.
yea I checked everything exhaust and intake. All was tight and showed no signs of any type of leak. The turbo was not changed but I did tear it apart and checked everything. Might menchen that is not my first go at that. There was no end play oil seals where good as where clearances. No luck finding a scanner that can log at this point. I am wanting on one other guy to call me back.
I wish I could post a movie so you guys can see what I am talking about. It is really hard to describe just what it does so it makes any since at all. I may be way off base but I cant help but think it all has something to do with this fluttering sound I here. I start hearing it right before it falls on it's face. sounds like some one is standing in front of a fan and blowing right into it. I did that as a kid to annoy my mom dont know if I am the only one that has ever did that.
I think I may have found the issue. If this was a gas motor there is no way it would be running over ideal. Idea ling I am getting a flutter gauge showing 1.5-3# of back pressure running down the road it gets increasingly higher at 2500 you have about 10# of back pressure. So just how much is it meant to have. this was tested at the back pressure sensor point.
yea I checked everything exhaust and intake. All was tight and showed no signs of any type of leak. The turbo was not changed but I did tear it apart and checked everything. Might menchen that is not my first go at that. There was no end play oil seals where good as where clearances. No luck finding a scanner that can log at this point. I am wanting on one other guy to call me back.
I wish I could post a movie so you guys can see what I am talking about. It is really hard to describe just what it does so it makes any since at all. I may be way off base but I cant help but think it all has something to do with this fluttering sound I here. I start hearing it right before it falls on it's face. sounds like some one is standing in front of a fan and blowing right into it. I did that as a kid to annoy my mom dont know if I am the only one that has ever did that.
Mike
For someone looking for help the above statement is not a good way to start. You obviously don't understand a turbo charged diesel. I will try the best I can without seeing the vehicle.
You will have as much back pressure as you have boost with a stock turbo and no fuel enhancement. If it has a chip or after market injectors you could have more drive pressure than boost.
If you have a boost leak or no boost signal to the map sensor it will not deliver fuel. If the map sensor is bad it will not deliver fuel. Without fuel you will not have boost. You need to get a scanner on it and check the basics. You could chase your tail forever and never catch it.
OK if it is showing that much back pressure you could have an exhaust back pressure valve stuck closed. Does it sound like a jet (whistle) trying to take off?
Kevin looks like we where typing at the same time.
I was only trying to explain with out going into great detail that I have not only been around more than a few turbo motors I have owned more then a few. I have rebuilt more then a couple of turbos. I have been to more then a couple of classes on them. so I have a pretty good idea about what to look for when checking a turbo out to see if it is trashed.
In the my first post I explained that it does in fact have upgraded injectors. the AD split shot injectors are no longer in the truck they have been replaced with AA code injectors that have been modified to 160cc's. so there has been a fuel increased in that aspect.
the map sensor is reading good but to my dads instance it was changed had no effect. I had already replaced the hose going to it just in case. I have a scanner although it is not the greatest in the world. It is very very limited on this truck. Does a much better job on chevy and dodge. I have not seen anything out of wack ft are good it want show back pressure map/bost reading is spot on with what it is. I was using a mechanical gauge tied into the back pressure sensor port to get the bp reading. I am using a boost gauge tied into the map line to get a bost reading. I am not getting any codes exept for now that the ebv and wast gate is unpluged. According to the computer and the scanner there is not anything wrong with the truck.
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