Tc76mps
#141
TECH Senior Member
iTrader: (16)
LOL! Yeah it was suprising yet hilarious when the calipers opened that far.
I've pressure checked all IC tubing from the outlet of the turbo to the TB with no leaks anywhere.
No exhaust leaks
WG opens when I put another pressure source to it (air compressor)
Went through two boost controllers hooked up any way you can hook em up with no boost increase....just hits 9psi and stays there.
Now I really cant wait to see what you dyno or anyone else dynos gives me something to look foward to when I get it sorted out. Right now i'll have to focus getting us moved into our new home.
J
I've pressure checked all IC tubing from the outlet of the turbo to the TB with no leaks anywhere.
No exhaust leaks
WG opens when I put another pressure source to it (air compressor)
Went through two boost controllers hooked up any way you can hook em up with no boost increase....just hits 9psi and stays there.
Now I really cant wait to see what you dyno or anyone else dynos gives me something to look foward to when I get it sorted out. Right now i'll have to focus getting us moved into our new home.
J
#143
TECH Senior Member
iTrader: (16)
Originally Posted by DrTurbo
Hmm, now I'm stumped on the 9psi. Make a new post for the 9psi problem...this one has wore its welcome out. Glad to see its a 76mm
Hey Doc, I never doubted you a bit OK OK maybe I did a lil.
And I had a post about the 9psi problem about 4 months ago...nothing worked. Spent a lot of $$ trying to figure it out too
#145
Originally Posted by frcefed98
Hey Doc, I never doubted you a bit OK OK maybe I did a lil.
And I had a post about the 9psi problem about 4 months ago...nothing worked. Spent a lot of $$ trying to figure it out too
And I had a post about the 9psi problem about 4 months ago...nothing worked. Spent a lot of $$ trying to figure it out too
As for your 9psi, don't know what the heck it could be. Somewhere their is a leak. Pressure test the turbo next....
#146
Originally Posted by frcefed98
Hey Doc, I never doubted you a bit OK OK maybe I did a lil.
And I had a post about the 9psi problem about 4 months ago...nothing worked. Spent a lot of $$ trying to figure it out too
And I had a post about the 9psi problem about 4 months ago...nothing worked. Spent a lot of $$ trying to figure it out too
#147
TECH Senior Member
iTrader: (16)
Don't think the filter is choking it, short and direct with plenty of filter
And my crossover is pretty standard when it comes to truck manifolds
As for the customers, tell em to look on the edge of the compressor housing, they'll see the stamp "HP76" save em some worry and trouble.
I'll be able to dig into the engine next week. I'll go over the valve train, intake manifold etc as well as replace the cam to a more turbo friendly ZO6 cam.
And my crossover is pretty standard when it comes to truck manifolds
As for the customers, tell em to look on the edge of the compressor housing, they'll see the stamp "HP76" save em some worry and trouble.
I'll be able to dig into the engine next week. I'll go over the valve train, intake manifold etc as well as replace the cam to a more turbo friendly ZO6 cam.
#148
TECH Senior Member
iTrader: (16)
Originally Posted by MIAPLAYA
Have you checked your BOV/bypass valve to make sure its holding closed at above 9 PSI applied pressure? Also you could connect a boost gauge directly to the compressor outlet fitting and check pressure leaving the compressor to find it for sure if its a leak post compressor outlet... Might also try disconnecting the exhaust at the downpipe.... If none of these nets you above 9 PSI something is not kosher somewhere in the unit or one of the valves. What BOV are you running?
Its a TiAL 50mm BOV. And it we checked it more than twice I still don't like the clamps they use to attach em though. I'm trying to locate some V bands that'll fit em.
We'll hook the boost gauge up to the compressor housing, easy enough to do, and frankly I don't know why we haven't tried it.
#150
Originally Posted by frcefed98
Its a TiAL 50mm BOV. And it we checked it more than twice I still don't like the clamps they use to attach em though. I'm trying to locate some V bands that'll fit em.
We'll hook the boost gauge up to the compressor housing, easy enough to do, and frankly I don't know why we haven't tried it.
We'll hook the boost gauge up to the compressor housing, easy enough to do, and frankly I don't know why we haven't tried it.
#152
Speaking of which what is your wastegate boost signal settings? I never saw what controller you were running. You should have one boost signal line going from the compressor outlet to the lower wastegate port. There should be another line going from the boost controller solenoid or valve outlet to the upper wastegate port. As for the boost controller going off experience from most boost controller assuming its an electronic unit there should be a source signal for the controller going from the charge pipe just before the throttle body to the in port on the solenoid. The output signal I already discussed. The signal for the main control unit usually comes from the intake manifold... This is all dependent on the type of controller used of course. Just something to check if you haven't already..
#153
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Join Date: Nov 2004
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My filter is smaller than yours and your truck kit looks just like mine.I make 14psi fine and the wastegate is def stopping it from some high boost.Do you still have the big cam in there??My friend just swapped out his big split cam with a 224 cam I have in mine and he had to turn his boost down because the new cam raised it about 3psi.That was my initial guess back when I saw your old GT-42 like mine was making boost alot later than mine.Im sure youve checked this as long as youve had the prolem.
#154
TECH Senior Member
iTrader: (16)
Right now its a Hallman Pro MBC. The compressor boost ref goes to the side lower port on my TiAL 44mm WG with the top port vented. Hooked it up the way Hallmans instructions said too. Also hooked it up to the top port to with the side port vented.
I've also ran a boost ref from behind the TB, no difference...
Super, yeah the ol STG 3 blower grind is still in there. But the GT42 had no problem making 12-15psi at all and the WG was always loud and clear at WOT It just spooled a tad slow...especially compared to this turbo
The ZO6 cam will be going in very soon.
I've also ran a boost ref from behind the TB, no difference...
Super, yeah the ol STG 3 blower grind is still in there. But the GT42 had no problem making 12-15psi at all and the WG was always loud and clear at WOT It just spooled a tad slow...especially compared to this turbo
The ZO6 cam will be going in very soon.
#155
No. I keep changing my mind on the shop cars setup . I am going to stick with the 6.0L manifolds and a T4 flange for now but thats about all I have set in stone. I will more than likley do a 100% stainless setup with the turbo located where I can swap out differnt units easily. The production kit should fit a PT88 which I am going to try . I am still Jonesing for a 91.5mm... Maybe later down the road.
One thing is for sure. I am going to run the TC76MPS turbo on the car first to get some verfiable dyno numbers for everyone. I hope to have the car done soon. Probably be a few weeks. Work at the plant has been killing me with OT latley. I still have to get everything esle finished on the car and then cut the core support out and box it to make room for the BIG ONE.
It never ends with me.
One thing is for sure. I am going to run the TC76MPS turbo on the car first to get some verfiable dyno numbers for everyone. I hope to have the car done soon. Probably be a few weeks. Work at the plant has been killing me with OT latley. I still have to get everything esle finished on the car and then cut the core support out and box it to make room for the BIG ONE.
It never ends with me.
#159
TECH Senior Member
iTrader: (16)
Originally Posted by wickedred
It never ends with me.
Me on this one car, i've been through 2 blower set ups, 2 turbo kits, and 3 different turbo's...with the 3 turbo's all in one year. GT42, MPT70, TC76MPS
Abeasst, huh?? Jer clicks on his ATP bookmark
#160
Originally Posted by frcefed98
Right now its a Hallman Pro MBC. The compressor boost ref goes to the side lower port on my TiAL 44mm WG with the top port vented. Hooked it up the way Hallmans instructions said too. Also hooked it up to the top port to with the side port vented.
I've also ran a boost ref from behind the TB, no difference...
I've also ran a boost ref from behind the TB, no difference...