denny t pin

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denny t pin

Postby T.winegar » Thu Mar 19, 2009 6:30 pm

is it a good idea to run a dennyT stage II with stock injectors??
89 727-stageIvcomp 4in intake-amsoil air filter, 4in exhaust, dennyT, 366 spring. pump turned up to make me smile! low stall converter, rebuilt tranny at 120,000miles
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Postby burnt_servo » Thu Mar 19, 2009 7:55 pm

all the fuel pin does is increase or decrease the amount of fuel sent to the injectors , depending on the amount of boost pressure the turbo is producing .

if you have things set up wrong regardless of the injectors either the engine will produce a lot of black smoke and high egt's , or the engine will be slugish and slow to spool up the turbo .

regardless of the injectors or fuel pin used a person is going to have to play with the various adjustments that control travel of the pin and what boost pressure it moves up and down at .
'93 w250 .... stock ...
curently removing the dead moose parts ....
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Postby peobryant » Thu Mar 19, 2009 8:35 pm

burnt_servo wrote:all the fuel pin does is increase or decrease the amount of fuel sent to the injectors , depending on the amount of boost pressure the turbo is producing .

if you have things set up wrong regardless of the injectors either the engine will produce a lot of black smoke and high egt's , or the engine will be slugish and slow to spool up the turbo .

regardless of the injectors or fuel pin used a person is going to have to play with the various adjustments that control travel of the pin and what boost pressure it moves up and down at .


In other words, yes, it is fine to run the DennyT pin with stock injectors. :lol:

Before you add fuel, I suggest you get gauges, if you don't already.
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Postby Richie O » Thu Mar 19, 2009 8:42 pm

Well your stock sticks flow pretty good so I would not worry pushing some more fuel to them. On my 93 I decided not to add more fuel without getting injectors first. I have heard a few horror storries of people with the smaller factory cooled sticks putting a early end to there ip by maxing out the pump and having no where for it to go. Not to good on the pump.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Postby T.winegar » Thu Mar 19, 2009 9:03 pm

well good, i'll be looking for a pin then!!

is there a way to pull out my sticks and send them in to "revamp" them to do as good as when they were new, or to make them flow a bit better and more effecient without switching out injectors.
89 727-stageIvcomp 4in intake-amsoil air filter, 4in exhaust, dennyT, 366 spring. pump turned up to make me smile! low stall converter, rebuilt tranny at 120,000miles
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Postby Richie O » Thu Mar 19, 2009 9:10 pm

T.winegar wrote:well good, i'll be looking for a pin then!!

is there a way to pull out my sticks and send them in to "revamp" them to do as good as when they were new, or to make them flow a bit better and more effecient without switching out injectors.




Yes. I don't want you to think I know much because I do not. You could have your sticks sent away and they can increase the flow by extrude hone or edm'ing. Just means increasing the hole size for more flow. They also will ( or should ) bench test the pop pressure to make sure they are in the correct range and uniform. As I said just a novice here. KTA can give more info as he knows his stuff.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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