Thezorn's AAZ rebuild.

[vanbcguy]

Hmmm that's surprising re: your boost.  My K24 by itself can get 15 PSI around 3K.  Retarding the timing a touch can help spool the turbo(s) up better, but I'd check for a boost / exhaust leak first.

What are your EGTs at?

[Thezorn]

Hmmm that's surprising re: your boost.  My K24 by itself can get 15 PSI around 3K.  Retarding the timing a touch can help spool the turbo(s) up better, but I'd check for a boost / exhaust leak first.

What are your EGTs at?

Didnt have the gauge hooked up last night, my guess is that it has a bit of an exhaust leak. Ill try and track it down today.

[Thezorn]

Hmmm that's surprising re: your boost.  My K24 by itself can get 15 PSI around 3K.  Retarding the timing a touch can help spool the turbo(s) up better, but I'd check for a boost / exhaust leak first.

What are your EGTs at?

Well I did have an exhaust leak, fixed it but we are still only make maybe 10psi boost. Is it possible for the pump timing to be causing this?
EGT's get to about 600 on a hardish excell.
Could old fuel have any effect on this?

[vanbcguy]

If your EGTs are only hitting 600°F then you need more fuel!

[Thezorn]

If your EGTs are only hitting 600°F then you need more fuel!

The wierd thing is I havent touched the pump since its been down. How it is I had been hitting 17 psi with the K14 no problem previously. Im gunna check out the wastegates today and make sure they arent opening to easily.

[Thezorn]

Well it looks like im having wategate issues with both turbos so that why Im not building boost. Unfortunatley I cant see myself being able to fix them so it looks like I am in the market for two new turbos, or at least a K24 with a working wastegate.

Thats really the only thing I can thing it would be as of now, When i drive it builds boost normall till about 6-7 PSI then STOPS. I wound it up to about 4k and It slowly built boost to about 10 PSI. Seems like it has large leaks in the wategates... or at least thats all I can think of now.

I know when I first played with the K14s wastegate when I first had the car, I backed the pring tension screw all the way out and it only built about 3-5 PSI.

I cant really think of any other things it could be at this point. I did have an exhaust leak but I fixed it. Boost isnt leaking out anywhere thats I could find either.

[jpedro]

hey will when i had that k24 on my car with the wastegate welded like it was when i gave it to you she built 20+ no problem without trying so i honestly doubt its that turbo cause nothing changed on it.  but that sucks about not building more then you are getting  oh and my phone kinda got ran over on sunday so im waiting for my new one to come in the mail should be here by friday i hope fingers crossed im lost without it.

[Thezorn]

hey will when i had that k24 on my car with the wastegate welded like it was when i gave it to you she built 20+ no problem without trying so i honestly doubt its that turbo cause nothing changed on it.  but that sucks about not building more then you are getting  oh and my phone kinda got ran over on sunday so im waiting for my new one to come in the mail should be here by friday i hope fingers crossed im lost without it.

Yea I know the turbo works, but I needed the wastegate on it working and I thought the one from that old k24 I got was going to work, but obviously it doesnt. if nothing turns up then ill probabley just throw that closed up wategate on there and see if its any better.

On a side note, even at 6 -7 PSI the car did run fairley strong and well

[vanbcguy]

Still, I do wonder why your EGTs are so low... I mean at only 600°F do you have enough heat in the exhaust to build any more boost than that?

[Thezorn]

Still, I do wonder why your EGTs are so low... I mean at only 600°F do you have enough heat in the exhaust to build any more boost than that?

Well it sure built alot more boost then this when it was just the k14 with the pump set the same, so that shouldnt really be a reason. Remember it is compound turbod (even if its not working) and intercooled.

[bugnut]

Maybe I missed this but how do you have the wastegates plumbed in?  Also what is the boost on the LP turbo when you are seeing 6-7psi?   With my setup when I am running 6psi system pressure my LP turbo is still at an idle.  Maybe 1/2psi.  I would focus more on the k14 right now. 

[Thezorn]

Maybe I missed this but how do you have the wastegates plumbed in?  Also what is the boost on the LP turbo when you are seeing 6-7psi?   With my setup when I am running 6psi system pressure my LP turbo is still at an idle.  Maybe 1/2psi.  I would focus more on the k14 right now. 

Truthfully im not sure, i think tomorrow ill go pick up another boost gauge for the LP turbo and see what its reading. I have my external gate on the k14 in relativley the same fashion you do with yours. It is controlled off manifold pressure and has a 14 PSI spring in the gate. The LP turbos wastegate is from the intermediate pipe with its stock wastegate. Im not really seeing any reason for the k14 to not be building boost though. I do believe the K24s wastegate is possibley open/the valve isnt seating or has no spring tension on it so it isnt going to get spinning.

Im pretty possitive its getting more then enough fuel then it needs since it can put out some black smoke. My only other idea was to jam both of the wastegate closed and see if it builds any boost then.

[RadoTD]

Im pretty possitive its getting more then enough fuel then it needs since it can put out some black smoke.

Wow, so you're making black smoke with egt's at only 600*F? Once you get the boosting figured out, you should be able to run mega fuel before it gets too hot!

[bugnut]

I have my wastegates plumbed different than you do.  My LP is off the manifold and the HP is off the intermediate pipe.  On the LP the factory is set to open at 24psi and if I had it the intermediate pipe I would over boost the first time I ran it.  Right now I am only seeing 10-13psi on the LP.  Total pressure is 35-38.  Depends on where I put the boost controller at.  My HP wastegate has a 7psi spring. 

 I have both wastegates from my k14 and k24 if you want to give them a try.  The k24 is the exhaust housing and gate.  the k14 is just the gate. 

[Thezorn]

I have my wastegates plumbed different than you do.  My LP is off the manifold and the HP is off the intermediate pipe.  On the LP the factory is set to open at 24psi and if I had it the intermediate pipe I would over boost the first time I ran it.  Right now I am only seeing 10-13psi on the LP.  Total pressure is 35-38.  Depends on where I put the boost controller at.  My HP wastegate has a 7psi spring. 

 I have both wastegates from my k14 and k24 if you want to give them a try.  The k24 is the exhaust housing and gate.  the k14 is just the gate. 

I think im just gunna get 2 new turbos in working condition. I dont really feel like, or have time anymore, to mess around with these ones, a straight swap will be alot easier.
Once I get them working and actually building boost ill have to play around and see what works better for the wastegates.

How fast are you guys seeing your boost? (directed at Bug and Rado)