Putting up some pics of mods done on the STS turbo kit to get this subject started.
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Turbo Mods and Troubleshooting
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Ghost03hemi
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Thanks Keith. I'll just shorten up the cold intake so it's not so low or behind the bumper.
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You sucked up water? Did you hydrolock the motor????
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Did more than that Otniel.
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Ouch....mine looked exactly like it
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Looks like I have the time now. The oil pan is already off.
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So my truck wouldnt shift at WOT. Thought the tranny was slipping or some sort of screwed up, turns out I forgot to raise the rev limiter so my shift is at 6k and the rev limiter was at 5600. WHOOPS lol
Stu is ur 390 ready to go in yet?
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Stu is ur 390 ready to go in yet?
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Glade you did get it figured out Austin.
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Not completely sure if the engine will be a 349 or a 392.
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We'll see.
Not completely sure if the engine will be a 349 or a 392.
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I think my viper fan is finally dieing. The low speed barely turns and the truck has almost overheated. Touched a few wires together trying to see what it could be and blew the fuse.. The high speed would work fine at least. Its been acting funky the past few days and even when the truck was cold the low speed came on and then the high with the switch off. SOOO I put the clutch fan back on today and i'll play with it some more later
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Can you set it to high speed only Austin?
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Opened up the main wiring harness to re-rout the O2 wiring and plug. Now the O2 plug will reach without modding the O2 sensor wiring.
The front mount turbo is here to stay.
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The front mount turbo is here to stay.
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Here's another interesting turbo set-up test results between the .81 and the .68 A/R housings on the rear mount STS turbo.
Water/meth, T76 turbo, 5.8 spring in primary W/G, 8.3 spring on secondary W/G(also used as VWG), both W/G seats in, 348 forged engine, Sharadon stage III trans, 2800 stall Edge TC, 456 gears, Trutrac posi, Full Street Trim.
........10/21/11..............03/05/12
......... (.81) ........ (.68) .... (.68 without the VWG)
60'...... 2.188 ........ 2.207 ....... 2.288
330...... 5.940 ........ 5.826 ....... 6.077
1/8...... 9.003 ........ 8.883 ....... 9.182
1/8mph... 79.48 ........ 81.62 ....... 78.70
1000'.... 11.678 ....... 11.416 ...... 11.880
1/4 ..... 13.926 ....... 13.588 ...... 14.148
1/4mph... 100.47 ....... 103.86 ...... 99.64
Without the VWG on the .68 A/R housing. The engine wouldn't rev up as high off the line and through the gears at only 6.5psi boost. Too much exhaust back pressure between the engine and turbo.
With the VWG, The engine was able to rev up off the line and through the gears but, did boost creep from 7 to 8.5psi boost in 3rd gear just past the 1000'mark. Ooooops.....(needed to swap W/G positions at the turbo manifold or a little bigger W/G).
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The air/fuel ratio still was 11.2 at the end of the track. Hummmmm.......
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Everything ran great on the tune and the engine. That's when it hit me.
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The KRC 5psi mild street tune was good for more boost.
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Eventually, there will be some testing done again with the VWG, .68 A/R housing on the front mount turbo only in the cool weather.
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Water/meth, T76 turbo, 5.8 spring in primary W/G, 8.3 spring on secondary W/G(also used as VWG), both W/G seats in, 348 forged engine, Sharadon stage III trans, 2800 stall Edge TC, 456 gears, Trutrac posi, Full Street Trim.
........10/21/11..............03/05/12
......... (.81) ........ (.68) .... (.68 without the VWG)
60'...... 2.188 ........ 2.207 ....... 2.288
330...... 5.940 ........ 5.826 ....... 6.077
1/8...... 9.003 ........ 8.883 ....... 9.182
1/8mph... 79.48 ........ 81.62 ....... 78.70
1000'.... 11.678 ....... 11.416 ...... 11.880
1/4 ..... 13.926 ....... 13.588 ...... 14.148
1/4mph... 100.47 ....... 103.86 ...... 99.64
Without the VWG on the .68 A/R housing. The engine wouldn't rev up as high off the line and through the gears at only 6.5psi boost. Too much exhaust back pressure between the engine and turbo.
With the VWG, The engine was able to rev up off the line and through the gears but, did boost creep from 7 to 8.5psi boost in 3rd gear just past the 1000'mark. Ooooops.....(needed to swap W/G positions at the turbo manifold or a little bigger W/G).
Eventually, there will be some testing done again with the VWG, .68 A/R housing on the front mount turbo only in the cool weather.
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Shortened the STS oil supply line and set-up new oil drain location directly into the cylinder head.
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What ya need is an oil cooler off of the turbo drain
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Now that's how it's done stu you won't have any oil return issues that way for sure
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