1991 Nissan 240sx – T76 LQ4 with T56
04-17-2013, 02:35 AM
#62
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Yeah I could post them up but I don't like hijacking threads.. unless you don't mind them on your page. I did a full bay shave, forged bottomed 370 with ETP thick decks heads and a GT4788. That combo done right will make over 1000whp. That 76 is going to surprise you!
04-17-2013, 06:52 AM
#63
Launching!
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That things badass, and yes that 76mm will scare the crap out of you. lol
I've been running for 9 months now except Im a 5.3l on 76mm and th350 with pathfinder rear. Im on about 14 psi and I havent really ran much cars because everytime I pop my hood ppl call me a cheater and walk away.
What software are you going with for tuning?
I've been running for 9 months now except Im a 5.3l on 76mm and th350 with pathfinder rear. Im on about 14 psi and I havent really ran much cars because everytime I pop my hood ppl call me a cheater and walk away.
What software are you going with for tuning?
04-17-2013, 11:16 AM
#64
the full bay shave is a PITA, i did the same. all the welding, grinding, and filling was brutal.
i sure hope the 76 is fun, i'll have to re-learn driving this car again.
04-17-2013, 11:22 AM
#65
That things badass, and yes that 76mm will scare the crap out of you. lol
I've been running for 9 months now except Im a 5.3l on 76mm and th350 with pathfinder rear. Im on about 14 psi and I havent really ran much cars because everytime I pop my hood ppl call me a cheater and walk away.
What software are you going with for tuning?
I've been running for 9 months now except Im a 5.3l on 76mm and th350 with pathfinder rear. Im on about 14 psi and I havent really ran much cars because everytime I pop my hood ppl call me a cheater and walk away.
What software are you going with for tuning?
I currently dont have any tuning software, but my tuner is using HP Tuners. i'll look at getting that eventually, but just want it up and running first.
04-29-2013, 10:57 AM
#68
Progress, Progress, Progress.
I got a little bit more done this week. I was finally able to mark one of the biggest "to do" items off my list. Now i can start putting the interior back together and move forward with wiring......YEAH WIRING!!!!
The big "to do" item was prepping and painting the interior. I painted about 75% of the interior yesterday....all that's left is the hatch area, but i have a quite bit of prep and rust clean up before i'm ready for paint. Hopefully i can tackle that here in the next few weeks. Masking off everything was fun. I painted the roll bar a Graphite Gray a while back so i had to mask that all off as well.....good fun. Stripping, sanding and cleaning took me quite a while.
Here are some pics of everything masked off before spraying.
Here is everything unmasked after 2 coats of epoxy primer. I'm leaving it in primer as it'll all be covered in carpet eventually.
Now the interior is ready for the new carpet i have waiting to go in. After that the wiring, dash, seats and interior panels can go in.
Next i moved back to the engine bay. I had to take care of the power steering lines before i could mount the driver's side manifold for good, as the lines run underneath the manifold and are very tough to get to from under the car. I assembled the lines (Russell Powerflex) and covered them with some heat wrap to help protect them from being so close to the manifold.
Here's a shot of the high pressure line coming from the pump to the rack.
Here's the low pressure line, not much to see as the majority of it runs under the coil bracket.
Here's the final shot of the driver's manifold, plug wires and steering lines.
From there i threw the crossover pipe back on. i need to make a brace for it to help support the turbo's weight, so that's another item that' s on my list. After that i can send it off for coating like the manifolds. Here are a couple of pics
Next update I hope to have some of the interior back in and can continue to piece the engine bay back together.
I got a little bit more done this week. I was finally able to mark one of the biggest "to do" items off my list. Now i can start putting the interior back together and move forward with wiring......YEAH WIRING!!!!
The big "to do" item was prepping and painting the interior. I painted about 75% of the interior yesterday....all that's left is the hatch area, but i have a quite bit of prep and rust clean up before i'm ready for paint. Hopefully i can tackle that here in the next few weeks. Masking off everything was fun. I painted the roll bar a Graphite Gray a while back so i had to mask that all off as well.....good fun. Stripping, sanding and cleaning took me quite a while.
Here are some pics of everything masked off before spraying.
Here is everything unmasked after 2 coats of epoxy primer. I'm leaving it in primer as it'll all be covered in carpet eventually.
Now the interior is ready for the new carpet i have waiting to go in. After that the wiring, dash, seats and interior panels can go in.
Next i moved back to the engine bay. I had to take care of the power steering lines before i could mount the driver's side manifold for good, as the lines run underneath the manifold and are very tough to get to from under the car. I assembled the lines (Russell Powerflex) and covered them with some heat wrap to help protect them from being so close to the manifold.
Here's a shot of the high pressure line coming from the pump to the rack.
Here's the low pressure line, not much to see as the majority of it runs under the coil bracket.
Here's the final shot of the driver's manifold, plug wires and steering lines.
From there i threw the crossover pipe back on. i need to make a brace for it to help support the turbo's weight, so that's another item that' s on my list. After that i can send it off for coating like the manifolds. Here are a couple of pics
Next update I hope to have some of the interior back in and can continue to piece the engine bay back together.
05-21-2013, 05:14 PM
#70
i did a little more work over the weekend.
After painting the interior, next up was some new carpet. The new carpet is from stockinteriors.com that needed to be trimmed to fit the shifter, ebake handle, roll cage as well as for cutting holes for the seat bolts, center console, etc. I have a little left to do with the carpet, but should be able to start putting the interior pieces back in and running all the wiring inside the car.
After that i moved back to the engine bay. i got the last few pieces i needed painted/ceramic coated and put things back together. The turbo crossover, wastegate/dump, turbo housing and downpipe are all installed for good. I also started on some of the intercooler piping to connect the turbo to the throttle body. I'm leaving the compressor and CHRA off for the initial start and adding a block off plate in place, i dont want all the grinding debris/dust running through the exhaust wheel. Also, i dont want to run all the engine asssembly lube through the CHRA. All i really have left to do in the engine bay is wiring, fuel lines, adding all the fluids, bleeding the brakes/clutch, and that should be about it.
this is where i mounted my trusty Greddy Profec B boost controller
I'm hoping to get a good bit of work done over the long weekend.
After painting the interior, next up was some new carpet. The new carpet is from stockinteriors.com that needed to be trimmed to fit the shifter, ebake handle, roll cage as well as for cutting holes for the seat bolts, center console, etc. I have a little left to do with the carpet, but should be able to start putting the interior pieces back in and running all the wiring inside the car.
After that i moved back to the engine bay. i got the last few pieces i needed painted/ceramic coated and put things back together. The turbo crossover, wastegate/dump, turbo housing and downpipe are all installed for good. I also started on some of the intercooler piping to connect the turbo to the throttle body. I'm leaving the compressor and CHRA off for the initial start and adding a block off plate in place, i dont want all the grinding debris/dust running through the exhaust wheel. Also, i dont want to run all the engine asssembly lube through the CHRA. All i really have left to do in the engine bay is wiring, fuel lines, adding all the fluids, bleeding the brakes/clutch, and that should be about it.
this is where i mounted my trusty Greddy Profec B boost controller
I'm hoping to get a good bit of work done over the long weekend.
09-10-2013, 10:50 AM
#71
well, i've hit a bump in the road with my project. over the last few weeks i've been focusing mostly on wiring. i completely separated the GTO harness and depinned the PCM connectors to remove stuff that's not needed and to extend the wires to locate the PCM in the car. I'm at the point where i've been trying to get it started.
Here is where i'm at. Motor cranks just fine. i get one combustion cycle from initial starting crank - here's a vid
I've done following trouble-shooting items. (copied from thread in PCM/tuning forum)
-2004 GTO PCM and harness (emissions stuff removed)
-VATS removed
-Bosch 044 fuel pump - 60psi at the On and Start positions (via aeromotive FPR)
-60lb Siemens injectors - have been flow tested and are not stuck
-motor runs when spraying starting fluid constantly through the intake
-Noid light test done - very, very faint light comes on with the first initial crank but nothing after that. this was the same across all 8 cylinders.
-Gave injectors 12v power and grounded all 8 injector pins in the Blue harness connector along with Noid light tester and each injector plug lit up.
-I thought the injector drivers in the PCM were bad, so i bought a 2nd PCM and had flashed to the same tune as the original PCM, same result.
-I've checked the PCM constant 12v pin and the 2 ignition pins in the PCM connector and get battery voltage
-I've checked all 8 ground pins in the PCM connectors and get less than 2 ohms resistance (.8 IIRC) at each one
-I had a friend with HP Tuners come over and scan the PCM while cranking to see what's going on. Getting no injector pulse width at all. everything else is registering.
Since it runs off straight starting fluid, i can pretty much rule out everything but the injectors.
Can anyone think of anything that could be causing this? do the Cam or crank sensors have a direct impact on the injectors? I have the service manual and will be going through and testing these 2 sensors and replacing if needed.
I've ordered HP Tuners and should have it later this week, so i should be able to monitor this more and can actually see the tune rather than going off what friends/tuner are telling me.
Thanks for the help!
Here is where i'm at. Motor cranks just fine. i get one combustion cycle from initial starting crank - here's a vid
I've done following trouble-shooting items. (copied from thread in PCM/tuning forum)
-2004 GTO PCM and harness (emissions stuff removed)
-VATS removed
-Bosch 044 fuel pump - 60psi at the On and Start positions (via aeromotive FPR)
-60lb Siemens injectors - have been flow tested and are not stuck
-motor runs when spraying starting fluid constantly through the intake
-Noid light test done - very, very faint light comes on with the first initial crank but nothing after that. this was the same across all 8 cylinders.
-Gave injectors 12v power and grounded all 8 injector pins in the Blue harness connector along with Noid light tester and each injector plug lit up.
-I thought the injector drivers in the PCM were bad, so i bought a 2nd PCM and had flashed to the same tune as the original PCM, same result.
-I've checked the PCM constant 12v pin and the 2 ignition pins in the PCM connector and get battery voltage
-I've checked all 8 ground pins in the PCM connectors and get less than 2 ohms resistance (.8 IIRC) at each one
-I had a friend with HP Tuners come over and scan the PCM while cranking to see what's going on. Getting no injector pulse width at all. everything else is registering.
Since it runs off straight starting fluid, i can pretty much rule out everything but the injectors.
Can anyone think of anything that could be causing this? do the Cam or crank sensors have a direct impact on the injectors? I have the service manual and will be going through and testing these 2 sensors and replacing if needed.
I've ordered HP Tuners and should have it later this week, so i should be able to monitor this more and can actually see the tune rather than going off what friends/tuner are telling me.
Thanks for the help!
09-16-2013, 05:43 AM
#77
Launching!
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I had the same problem and it was vats. There are 2 other settings (I think), serial and none. I assume you put none, maybe try the other? I was working off a 02' Camaro 3 bar going into a 01' silverado. Different pcms, so not sure if the options are the same. When you say removed did you just remove the wiring? The settings I'm talking about are in hp tuners.
09-16-2013, 09:19 AM
#78
I had the same problem and it was vats. There are 2 other settings (I think), serial and none. I assume you put none, maybe try the other? I was working off a 02' Camaro 3 bar going into a 01' silverado. Different pcms, so not sure if the options are the same. When you say removed did you just remove the wiring? The settings I'm talking about are in hp tuners.
09-17-2013, 09:14 PM
#79
Staging Lane
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I see a few things that I don't like. First your maf is not set to fail. Go to Engine diagnostics> airflow> maf fail=0, then go to Engine diagnostics> DTC> p0101 thru p0103 should be checked and set to no mil light. I'm also not to sure whover tuned it has ever tuned for the 60lb injectors you have installed. I think the IFR table should be 72.4 all the way across since you should be using your FPR boost referenced off the intake.
Last edited by jmac636; 03-20-2015 at 12:17 PM.
09-17-2013, 09:46 PM
#80
Sweet car man!