Jodadej's Engine Build Thread

[jodadejss06gt]

Thats what I'm hoping! I'm getting to a point now where I'm going to have a hard time picking a spring to run in the wastegate. 8psi on this setup will probably be low 500's but I'll probably need more than 16 to get to the power I want with corn. We'll see.

 

[W3bb3r04]

How is the turbo mounted on your car? And you can always run the 8 psi spring and run the boost controller in the max boost config with a lead going to the top of the wastegate too.

 

[jodadejss06gt]

So RJ, turns out that is the way they ran the new boost lines. I only came off a boost source last time straight into the Solenoid for the E2 and then out of that into the side port on the Tial. Not sure how this works, but this is how Precesion says to route the lines for a Boost controller "bleeder valve" method.

Not sure what feeding the output from the E2 to the top of the WG is doing????

Anyways, here are some updated pics. Looks like we are real close to a first start.

 

[W3bb3r04]

Looks great man! From what I've read, in that set up, the line from the bottom port is being limited to lower the boost the wastegate sees to keep it closed longer. The top line puts pressure on the diaphragm keeping the wastegate closed even longer allowing for higher boost than just the bottom port.

 

[jodadejss06gt]

So I'm going back and forth between these

http://www.precisionturbo.net/tech/instruction-manuals/PTE-PW46-Wastegate-Instructions.pdf

http://www.turbosmartusa.com/wp-content/uploads/2013/04/eBoost2-4.19-MAY-12.pdf

 

[W3bb3r04]

The bottom one on page 11 of the turbosmart one is what I was referring to. That will make the most boost

 

[jodadejss06gt]

So I'm wondering though, If I put an 8psi spring in it with this setup, will I ever run 8psi with the SP at 0? I want to be able to put a light spring in, say 6 lb, but be able to hit 16-20. I hope I don't have to get a 4 port solenoid to do that.

I agree that setup will run high pressure, just not sure if it will still be able to run spring pressure.

 

[W3bb3r04]

So I'm wondering though, If I put an 8psi spring in it with this setup, will I ever run 8psi with the SP at 0? I want to be able to put a light spring in, say 6 lb, but be able to hit 16-20. I hope I don't have to get a 4 port solenoid to do that.

I agree that setup will run high pressure, just not sure if it will still be able to run spring pressure.

I'm not 100% sure to be honest. I think mine was around 10-12 with that set up on zero. You should be able to hit 20 with it on the bottom port only. Mine hit 18 psi at 70% duty cycle

 

[jodadejss06gt]

What spring did you have in there to hit the 10-12? I just want to be real safe running around on pump at 11:1. So with an SP of 70 with "X" spring you hit 18? That would be perfect for me. 18lb on that 76 is going to make sweet power.

 

[W3bb3r04]

Yeah I was running the tial 8.7# spring. I think it's .6 bar

 

[JoshK]

I thought it was a rule of thumb to not force more than 2x the spring presure? Like if you have a 10lb spring then only run as high as 20. I run a 12lb spring in my gate, but I know you what to be able to run pump too

 

[jodadejss06gt]

First I'm going to see where 8lb gives me, if that is only 500 on pump, then I'll put a 10lb spring in and be good to go for both pump and e85.

orrr i'll just see how high the 8lb spring will go and with the way they have it configured right now, I'm pretty sure its going to be able to go double. You are right though Josh, its my understanding that you don't really want to try to go more than double.

 

[retfr8flyr]

If you only use a single port the 2X the spring is a good rule of thumb. With both ports you can get higher boost levels. With the boost you are looking to run and an 8# spring I would use the Dual Port Single Turbo Method 2 on the EBoost2 directions. With this setup you will most likely have about 9#-10# minimum boost, with the 8# spring and you can run it up to over 20#.

 

[JeremyH]

If you only use a single port the 2X the spring is a good rule of thumb. With both ports you can get higher boost levels. With the boost you are looking to run and an 8# spring I would use the Dual Port Single Turbo Method 2 on the EBoost2 directions. With this setup you will most likely have about 9#-10# minimum boost, with the 8# spring and you can run it up to over 20#.

This.

 

[jodadejss06gt]

Well boys this is probably what I'll do then. Thanks for the suggestions.

 

[jodadejss06gt]

UPDATE 7-14:
I'm picking the car up tomorrow. Bad news is that in decel there is some blur smoke coming from the exhaust. The shop only did a 93 tune for right now. We're thinking that I need to drive it and try to put some break in miles on it before we crank up the boost or before the engine needs to get checked out. Drain line on turbo is clear, checking intake side tonight, exhaust side I'd clear. I'm hoping it's stuff still burning off.

Good news on 5lb spring it made 10 lb. With 14* for break in tune on 93 with only a pull to 5k it made 500/530.

 

[retfr8flyr]

Jason, if it was broken in and full pulls made on the dyno, to tune it, then the rings are seated shouldn't be making smoke. With the way you mounted the drain line in the front of the pan and the fact that from the pic anyway, it looks like it has a slight up angle to it just as it enters the pan. I think you are going to get oil smoke on decel because the oil in the pan runs forward during decel and the line can't drain the oil, so it backs up and passes the seals in the turbo. If you pulled the turbo off I would bet you would see the pipes going to the mount and inside the mount itself, fairly clean but the hot side exhaust will have oil residue in it.

I would never mount a drain line in the front of the pan for that reason. If you watch the big boy turbo guys run most of them will even smoke some on decel. Unless you have a scavenge pump system, the oil has a hard time draining with just gravity assist, on decel. As you know the seals in a turbo are like piston rings and if the drain oil backs up, it goes past them and right out the exhaust. In the 3v it's even harder to get adequate drainage because it runs such high oil pressures.

 

[W3bb3r04]

Yeah That is what I would suggest as well Jason. Looks like the line could be shortened a little bit. Im going to put my drain on the side of the pan close to the middle since the oil in the pan should never cover that area on decel or accel. That was an issue I had early on with my build. If that pan was more than half full on the dipstick it would smoke on decel. I would just wait til It was below a certain point and it wouldn't smoke anymore.

 

[jodadejss06gt]

I'm pretty sure they pulled the oil drain line to check to see if that was the issue. I believe they changed the line slightly, but it has always been mounted in at orientation. I've never had an issue for 40,000 miles.

Good suggestions though. I'll have the guys check that out.

 

[JeremyH]

Its a different turbo though. May have just been very lucky on the old setup. Did you go bb?