please help me HMT experts!
Hey guys, here is my setup:
d16y8 .42/.48 Garret T3 2.5" dp junkyard charge pipes 6.5 psi external TiAL wastegate I had a lot of problems with boost leaks and stuff blowing in the charge pipes, but this most recent incident was less noticable, but now my turbo spools very slowly, it doesnt hit full boost till like 5500+ rpm. I of course automatically thought charge pipes, but i looked at all of them and they look fine. My question is, what other factors could be causing this? this is what I have been told: wastegate leaking (how do you tell with a TiAL external?) boost/charge piping leak (could be possible still, i'm gonna do more checks) seized turbo (doubt it, still spins freely and hits full boost, just later) However, I JUST redid my charge piping and roughly checked out my intercooler, I swear there are no leaks. I did a compression test, normal compression, each cylinder is getting spark, etc. any help would be GREATLY appreaciated, and let me know if you need more info. HEEEELP! |
Re:please help me HMT experts!
well where do you have the wastegate Td' from? the turbo will spool faster if you T it off the intake manifold, T it off the charcoal emissions filter hose on the top of the manifold. mine spools up 1k rpm faster this way then when it was Td' off the compressor housing.
|
Re:please help me HMT experts!
I had that problem and it was a leak between the manifold and turbo. Turn the car on and feel around the connection to see if any air blows on your hand. Other than that it could only be charge pipe related.
|
Re:please help me HMT experts!
i guarantee its not charge pipe related. I redid them today, and theyre seriously sooo solid and dont leak anything. Do you use a gasket between manifold/turbo? I didnt :-[
Dude, i'm gonna try that for the wastegate. Why does it spool faster? thats interesting. any more nice little tips like this for me? when do you guys spool? Mine spools earlier, like maybe 3800, but it doesnt hit full boost until like 5500. Is that really unreasonable or not? I'm confused. |
Re:please help me HMT experts!
Originally Posted by s1ngle
Do you use a gasket between manifold/turbo? I didnt :-[
|
Re:please help me HMT experts!
This is where you need gaskets and when you end up putting them on add some of those copper gasket spray to make them a bit more sticky and cover up the imperfections on the gasket (at least the first two gaskets)
1) Block and turbo manifold 2) manifold and turbo 3) manifold and wastegate Those are the three main ones. A tip to keep ur charge pipes a bit tighter is to use either hairspray around the pipings or some kind of adhesive spray. If you have a welder, put a couple small beads on the pipings. hope this helps |
Re:please help me HMT experts!
is full boost at 5500 really that unreasonable to begin with?
thanks stealthmode, i'll do that pronto for sure. |
Re:please help me HMT experts!
Originally Posted by s1ngle
is full boost at 5500 really that unreasonable to begin with?
|
Re:please help me HMT experts!
damn! how do you manage that???
|
Re:please help me HMT experts!
not sure if the t3 .48/.42 is supposed to spool up that late on ya but it might be...
do you have a bov? What kind? Check for leaks around that. I personally like full boost by at least around 4k because you stay in the power band longer but you dont get a good of a kick as some of the bigger turbos up higher in the rpm band. It just depends on what you like. Some people prefer to have boost at 2-3k and like it like that and some prefer to have boost only from 6-8k. |
Re:please help me HMT experts!
small ass turbo with no exhaust leaks
|
Re:please help me HMT experts!
Originally Posted by B16Drag
not sure if the t3 .48/.42 is supposed to spool up that late on ya but it might be...
do you have a bov? What kind? Check for leaks around that. I personally like full boost by at least around 4k because you stay in the power band longer but you dont get a good of a kick as some of the bigger turbos up higher in the rpm band. It just depends on what you like. Some people prefer to have boost at 2-3k and like it like that and some prefer to have boost only from 6-8k. |
Re:please help me HMT experts!
i'd put in gasket or make gaskets before doing anything else. Your call though...
|
Re:please help me HMT experts!
I will do that, but that will be when i have more time to disassemble the car. BOV is easy to check.
|
Re:please help me HMT experts!
does getting the wastegate vacuum line from the IM really help the turbo spool that much?
|
Re:please help me HMT experts!
Originally Posted by s1ngle
does getting the wastegate vacuum line from the IM really help the turbo spool that much?
|
Re:please help me HMT experts!
oh so it doesnt actually help you spool faster? youre explanation was along the lines about what i was thinking.
how does it help the turbo spool faster? or does it? |
Re:please help me HMT experts!
I'm not sure about faster, but this is how I'll explain it.
If you have your wg hooked up to the compressor housing, the wg will start to crack open as soon as the housing tells it it's getting close to its boost setting, then all the pressure goes through the system and finally into the intake. If you have your wg hooked to the IM, you are taking a signal right from your intake, so the wg will start to crack open later, after all the pressure has gone through the Intercooler/pipes/ect. Basically, your wastegate is acting based on what the pressure actually is in the IM, not at the compressor housing, so it would seem to spool faster in theory, but I don't know if you'll actually be able to tell. :-\ |
Re:please help me HMT experts!
I know what the theory behind it is, but i dont think it'll spool FASTER, just FURTHER before the wastegate opens.
|
Re:please help me HMT experts!
If the wg starts opening further in the system, it would spool faster, I just don't know if it would be noticeable. The only reason I ever did it is to try to up the boost a couple pounds without ------- with the wastegate. ;)
|
Re:please help me HMT experts!
I think that the only thing it would do it account for any system leaks. Because the system is pressureized the housing is almost at the same psi as the IM. The difference in time would be too minute to even calculate.
If there was a leak in one of your pipes though, the line comming off the IM would "compensate" for that. So it is a way to take small leaks that out of the equation. |
All times are GMT -5. The time now is 11:16 PM. |
© 2024 MH Sub I, LLC dba Internet Brands