help.. the s4 turbo wont spool on my 12a
#1
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help.. the s4 turbo wont spool on my 12a
the set up is; s4 turbo on a stock 12, holley 600dp, stock tII down pipe, high flow cat,el cheep oh muffler, 2" pipe from the dp back with a exaust leak after the Dp( its a hole in the pipe about 3/16" at the flange, the carb hat is taped for vac/ boost for the boost gauge and fpr, the vac line for the wg is teed for the bov i removed the boost controler to run stock boost for a test.
i get 2 psi of boost @ 6k. i ran the vac line from the boost gauge to the bov line and no change. i got a new gauge and no change. i changed the turbo and no change.
the gauge reads no vac @ idle if i rev the engine in N. i can get 10 in of vac.
i dont know what to do next. A friend is going to weld the exaust pipe but i dont think that it will fix my problem.
some pics.
i get 2 psi of boost @ 6k. i ran the vac line from the boost gauge to the bov line and no change. i got a new gauge and no change. i changed the turbo and no change.
the gauge reads no vac @ idle if i rev the engine in N. i can get 10 in of vac.
i dont know what to do next. A friend is going to weld the exaust pipe but i dont think that it will fix my problem.
some pics.
#2
wheres the water goin?
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to me it sounds like a exhaust leak between the block and the turbo , i would check your manifold to block gasket and your turbo to manifold gasket. would also chk wastegate
you got any leaks on the intake between the turbo and the carb
you got any leaks on the intake between the turbo and the carb
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i did use used gaskets be tween the block and turbo
i was hoping i would not need to pull the turbo off again but thats what i get for not doing it the first time.
#4
PSHH! PSHH! HEAR ME NOW?
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The fitting on the front of turbo needs a line run straight to the wastegate. The BOV line needs to be run to the intake. The FPR line needs to be run to the carb hat. You need to have a one way check valve in the vacuum line going to the brake booster. Boost will blow out the diaphram in the booster. If you are running a PCV system, you will also need a one check valve from the the intake to the center iron. From looking at the pics, you need to ditch the smog pump and plug any of the lines comeing off the intake that are associated with the emmisions.
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the air pump just blowes to the cat so that i can pass the smog test.
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yes i have a msd wideband; 11.75 @ idle cruse is around 11. and wot is <10
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ok.. i ran the vac lines as instructed. i gave it a test run with just a "cleaned out Dp" and an 18" long 2" pipe WOW its loud.
And i got boost!! 5psi @5k and 6psi @6k. after work on tues. ill bolt the exaust back on and install the boost controller for a test.
THANK YOU... and good call on the pre cat.
And i got boost!! 5psi @5k and 6psi @6k. after work on tues. ill bolt the exaust back on and install the boost controller for a test.
THANK YOU... and good call on the pre cat.
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ok.. i put the exaust back on and nothing
i should be getting a 3" turbo back put on in a week or two.
yes i have don a lot of reseach on how to boost prep a Holley. once i'm getting boost i can start leaning out the carb to get a good afr.
#15
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You will feel the 3" exhaust I'm maxing out my stock s5 turbo! 270BHP and 2575lb 82 gen1 rx-7. I couldn't believe how much difference cold air to the air filter, an intercooler and a 3" did. Dial in 13psi and you have an absolute wall of power from 4000rpm to 6500rpm
http://www.youtube.com/watch?v=P12jwypWL5U
PB the run before snapping/twisting axles was 13.362@103 on a messy run. Best MPH is 109. This car is 12sec capable easy. PS I haven't gotten a clean run from the car without problems yet. The 13.362 was with a few problems such as the throttle pulley slipping LOL
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Banned. I got OWNED!!!
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is there a place to learn about boost prepping a nikki carb? I wanna go turbo so barney stops making fun of my car.
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well... 3" exaust and wow....boost is good im fixing the leak at the mani now and then i can get it tuned. with the new job i just have not had time to work on it in a few weeks. but soon. and ill update when its running.
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