Low boost.

How to make it go fast

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Postby fergavs » Wed Dec 24, 2008 8:19 pm

As stated a retorque should solve your problem with the weaping.

As far as the low boost and low egts I have to agree with KTA, you are not getting full fuel. I run a slightly bigger charger and injectors but my turbo lights hard. From a stand still I make 50psi very fast. I think your full fuel is being limited by some thing.

If you had full fuel but actual low boost you would have lots of smoke and high egt because of all the fuel. When I pop an intercooler boot I smoke like crazy and have crazy hot egts but low boost. That should rule out anything to do with the air side of things. You have low end fuel because you can smoke lots at lower rpm. So check all the stuff for your high boost or max fuel pump settings/parts.

The manifold to IP line is a good place to look as mentioned. If it leaks your fuel pin wont travel down and you will not get your fuel. Also if it seems good just pop the afc top off and push down on the pin to make sure it moves smoothly. I had a small bur on one of mine causing it to stick. Other then that check fuel pressure and run the fuel screw in as much as you can. With your combo of parts I would expect about 1500max egt and 45-48 psi of boost. You have a lot of HP on the table waiting to be found. :thumleft:
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Postby Ezra » Thu Dec 25, 2008 3:11 pm

Ok there retorqued..I then cleaned the engine,drove it around popped the hood no coolant there at head.but there is quite abit of coolant on the front diff.But I cant find the source of the leak.Any ideas? Ezra
93 W250,auto,3.54's..167k miles..asa modified intake.stans 4in,.industrial injection pump.6x.016's..S300 62/71/14..piston lift pump..And still more to come.
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Postby PToombs » Thu Dec 25, 2008 6:24 pm

If the head starts seeping again, just loosen the radiator cap a little. Not so it flops around though. Since the retorque, just keep an eye on it for a while, might be ok for a long time.
On the front diff, could it be from the previous leak? Did you clean that too? Maybe look up from below, check the water pump weephole, bottom of the radiator, etc.

On the boost, I agree with the others. Check the line from the head to the AFC, check the cone for free movement, pull the cone, hit the throttle and see if the pin inside moves out. (you have to push it back with a screwdriver before the cone goes back in, in case you didnt' know).
Good luck, hope the trip goes smooth for ya!
pete

Just enough power to break everything behind the crankshaft.
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Postby Ezra » Thu Dec 25, 2008 8:41 pm

Thanks Pete..And merry Christmas! Ezra
93 W250,auto,3.54's..167k miles..asa modified intake.stans 4in,.industrial injection pump.6x.016's..S300 62/71/14..piston lift pump..And still more to come.
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Postby peobryant » Sat Dec 27, 2008 1:22 pm

Since we are kind of on the topic of torqueing, I have been told that on our 1st gens, it isn't neccesarily about ft/lbs. I have heard something about the angle? Some need to be at 90*, and others at 70*? Anyone know what I am talking about or am I crazy? I always thought it was to a certain ft/lb but someone told me otherwise.
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Postby PToombs » Sat Dec 27, 2008 1:57 pm

The early engines were torque only to tight. The later engines are torque -turn. This means that before you torque to 60,90,120. (or what ever) The new ones you torque 60, 90, then turn the bolts 90* more. Thus, torque-turn.
Clear as mud? :lol:
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Postby peobryant » Sat Dec 27, 2008 2:48 pm

I;m going to have to do a little more research on that one...

Thanks for the information though, Pete.
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