My remote turbocharged 2000 Explorer 5.0

[Explorer5.0]

I need a little help deciding what turbo to put on this truck.... http://www.turbomustangs.com/smf/index.php?topic=73669.0

[vnmous93cobra]

I can't help with the turbo size, but I love your setup.  Its just a very overweight mustang 

[Explorer5.0]

UPDATE: I just bought a 61mm P-trim .84 off of a fellow member. I'll have pictures up as soon as it arrives.

[Explorer5.0]

well, here it is... P-trim T4 housing with a T3 flange. I found  a company that has a .70 housing that I may get....

[Explorer5.0]

Well, I got the turbo installed. I can now tell how restructive the previous turbo was- I have my exhaust tone back. Turns out that the .84 housing is too big. I am not seeing 3spi until 3rd gear.

Has anyone ever changed the turbine housing on one of these? I know a P-trim is a P-trim, but you never know. I hate to spend the money on the .70 housing and it not fit.

[seawalkersee]

So...you are saying you want a stroker kit huh?

Chris

[4-71/z-28]

that .84 is a t3 housing that should spool instantly, i would check for a boost leak and make sure your wastegate isnt leaking.  i run that exact turbo on my rb20det( 2 liter nissan skyline engine ) and see 20psi in second gear. im thinking its a coupler or wastegate. you dont have any exhaust leaks do you?

[Explorer5.0]

that .84 is a t3 housing that should spool instantly, i would check for a boost leak and make sure your wastegate isnt leaking.  i run that exact turbo on my rb20det( 2 liter nissan skyline engine ) and see 20psi in second gear. im thinking its a coupler or wastegate. you dont have any exhaust leaks do you?

Its actually a T4 housing, it just has a T3 flange- it is a full P-trim turbine. Turbonetics calls it a Euro-style small inlet T4.  I had a T3 turbine on it before, and this one is much larger. I checked for leaks yeasterday and tightened all of the clamps.

There are no leaks, and the only thing I can think of besides the housing being too large is the WG getting a false signal from where I tapped the compressor cover. I am going to drill a hole in the charge pipe today and install a wheel valve stem(without the core) to connect my wastegate to.

[4-71/z-28]

is youre wastegate vented to atmosphere?  you said you got youre v8 sound back you wastegate may be open and letting all the exhasut around the turbine.  youre blow off valve may be being pushed open, do you have a strong signal line to it? or because its a remote mount turbo the pressure drop from the compressor to  the intake could be significant. i also had that turbo on my mustang spooled like a roots blower!!

[Explorer5.0]

is youre wastegate vented to atmosphere?  you said you got youre v8 sound back you wastegate may be open and letting all the exhasut around the turbine.  youre blow off valve may be being pushed open, do you have a strong signal line to it? or because its a remote mount turbo the pressure drop from the compressor to  the intake could be significant. i also had that turbo on my mustang spooled like a roots blower!!

I checked the BOV, it is fine. Everything was working fine with the old turbo. When I say I got the sound back, I was meaning at idle. I do think my wastegate is opening too soon. When you hear the turbo spooling, it doesnt sound any faster at 5000rpm than it does at 2500rpm. I watch the boost gauge to to 0psi the quickly to 1-2, then no higher.

I put a piece of tape over the wastegate opening to see if it was opening too early, not thinking about it opening when I let off of the gas at high RPM.

[4-71/z-28]

at idle nothing is coming out of the wastegate,  what are you useing for a boost controller?

[Explorer5.0]

at idle nothing is coming out of the wastegate,  what are you useing for a boost controller?

no boost controller, just the wastegate..

[4-71/z-28]

i could never really hear these turbos spool are you hearing the open wastegate(jet engine). where is the boost gauge plumbed to?  try to get a wastegate signal from the charge pipe, there must be a big difference in the 2 readings, if the wastegate is opeing at 2500 thats about right wth that turbo.

[Explorer5.0]

i could never really hear these turbos spool are you hearing the open wastegate(jet engine). where is the boost gauge plumbed to?  try to get a wastegate signal from the charge pipe, there must be a big difference in the 2 readings, if the wastegate is opeing at 2500 thats about right wth that turbo.

turbo spool is really pronounced on a remote setup, you can hear it spool like a jet engine. I moved the sample for the wastegate to the charge pipe and it is doing the same thing. I guess the turbo is just too big.

[seawalkersee]

See...you need a stroker kit...

Chris

[mustangguy72]

You could try blocking one of the hotside inlets to get better spool time.  Just weld up a plate over half the t3 flange.  I can't believe it would be too large for your 302.  Nice pics of the turbo btw 

[Explorer5.0]

You could try blocking one of the hotside inlets to get better spool time.  Just weld up a plate over half the t3 flange.  I can't believe it would be too large for your 302.  Nice pics of the turbo btw 

I think that would make it too small. I can make it spool, just barely- I come out of  the midrange "lag" at about 3000rpm, but it just wont spin fast enough. I am worried that going to a .42 AR(blocking off one side) will be too small, or it could be like running a .58 up front

[mustangguy72]

At least it would be easily reversible.  You could experiment with blocking and drilling small passages to simulate a different hotside.

[Explorer5.0]

At least it would be easily reversible.  You could experiment with blocking and drilling small passages to simulate a different hotside.

I thought about that- I posted a question about it in the thread about the block off plates. I wasn't sure if you could partially block off one side or not. It seems like it would work fine, but the gasses flowing through the partially blocked side would be hitting the turbine at less velocity than the unblocked side.

I was thinking about cutting the plate out of an old license plate. Since the exhaust is so much cooler I am not worried about it melting.

[4-71/z-28]

there is no possible way that that turbo is too big, is there any shaft play?  also is youre wastegate open to atmosphere?  for sure youre bov is working, if you dont have a vaccum line hooked up to it boost could push the bov open.

[Explorer5.0]

there is no possible way that that turbo is too big, is there any shaft play?  also is youre wastegate open to atmosphere?  for sure youre bov is working, if you dont have a vaccum line hooked up to it boost could push the bov open.

I beg to differ... not even looking at the fact that it doesnt make much boost, it doesnt even start until after 3000rpm at WOT. This is a heavy street truck and I want some low end power. THe turbo is brand new and all of the other things(BOV, WG) were working fine up to the point where I changed out the turbo.

[CrazyInBlack]

Not to get off topic here but have you had the car tuned yet?  Bamachips has tuned some cars in my area with GREAT success.  Very cool build by the way.

[Explorer5.0]

Not to get off topic here but have you had the car tuned yet?  Bamachips has tuned some cars in my area with GREAT success.  Very cool build by the way.

It's not tuned yet, but it will be street tuned by James at Henson Performance in Bessemer, Alabama. Doug at Bamachips is usually the go to guy for Explorer tuning, but he didn't want to tune mine.

James actually has a remote turbo Explorer himself, but his is a SOHC 4.0 Sport.

[BAD69BIRD]

Why don't you try changing back to the old turbo?

[Explorer5.0]

Why don't you try changing back to the old turbo?

It was way too small- it stayed in boost anytime the truck was under a load.