Black1
Full Access Member
FlyingLow said:
When you use compessed air, you risk damaging the bearings!
I did some more modding!!!
- Thread starter FlyingLow
- Start date
When you use compessed air, you risk damaging the bearings!
Black1 said:
You sure? I have never heard that and my muffler guy didn't seem to be concerned. Like I said that clip was when the truck was cold. I will keep my eye on it and see how it does. But you do have me worried a little now.
Last edited:
FSTJACK
Full Access Member
Black1 said:
Jakes is correct on that one. Don't blow dry with compressed air any ball/roller type bearing ! ! !
Always wash Muffler Bearings out in Summers Eve prior to installation and lube liberally with high speed Pleasure Balm.
FSTJACK said:
Should I have him pull it off and grease it?
Also Jack what do you think about the A/F leaning out a bit with the Hi-flows and the boost being more stable now?
FSTJACK
Full Access Member
FlyingLow said:
You need more Pleasure Balm.
Seriously; that is normal as you are letting more heat go farther back through the exhaust system and also reducing back pressure. Both of which will lean things out. The consistant heat keeps the boost levels more consistant.
Be careful that you are not too lean with the STS.
FSTJACK said:
STS told me I should aim for 11.6 under boost. I'm in the high 10's to around 11.0 or so. It does seem to have more power. I can only guess that since I was rich (10.0 or richer) that now I essentially did some tuning by just changing out the cats.
FSTJACK
Full Access Member
FlyingLow said:
Scott I don't have a clue where an STS should be run. With what has transpired with them I know nothing about where they need to be to keep everything happy.
FSTJACK said:
I wasn't really asking about where the AF should be. I was told by Rick Squire to shoot for 11.6.
FSTJACK
Full Access Member
FlyingLow said:
Sorry !
FSTJACK said:
No need. I was just letting you know that there was no problem with you not knowing about the AF for the STS's.
Does the better airflow help with my boost? It appears to have made it more steady or now the hi-flow are less restrictive so it is harder for the turbo to build boost. Any ideas?[/QUOTE]
excerpt from Dennis Grant...
I've seen a couple of posts from people who added aftermarket exhausts, who report "my turbo spools up faster now" Well, that's because by lowering the outlet pressure, you increased the pressure differential, and now the exhaust gas can expand more, and do more work. That increased work pushes harder on your turbo, and it spools up faster. You should also see less boost drop at redline, because if an exhaust system is flow-limited, once you pass the flow limit of the system, any additional gasses you try and force through it only raise the outlet pressure. Higher outlet pressure, lower pressure differential, less work, less boost.
Ron
excerpt from Dennis Grant...
I've seen a couple of posts from people who added aftermarket exhausts, who report "my turbo spools up faster now" Well, that's because by lowering the outlet pressure, you increased the pressure differential, and now the exhaust gas can expand more, and do more work. That increased work pushes harder on your turbo, and it spools up faster. You should also see less boost drop at redline, because if an exhaust system is flow-limited, once you pass the flow limit of the system, any additional gasses you try and force through it only raise the outlet pressure. Higher outlet pressure, lower pressure differential, less work, less boost.
Ron
rottenronnie said:
excerpt from Dennis Grant...
I've seen a couple of posts from people who added aftermarket exhausts, who report "my turbo spools up faster now" Well, that's because by lowering the outlet pressure, you increased the pressure differential, and now the exhaust gas can expand more, and do more work. That increased work pushes harder on your turbo, and it spools up faster. You should also see less boost drop at redline, because if an exhaust system is flow-limited, once you pass the flow limit of the system, any additional gasses you try and force through it only raise the outlet pressure. Higher outlet pressure, lower pressure differential, less work, less boost.
Ron[/QUOTE]
Thanks Ronnie!!
Kevan
Full Access Member
Sounds like you've got the muffler bearings installed correctly.
You might want to check the piston return springs.
You might want to check the piston return springs.
All I know Scott is I would not push it. You are in the definite minority of those who have tried a STS and not blown up.
FSTJACK
Full Access Member
Silverback said:
That was actually my point about AFR's. I know what works in the world of boosted motors but not STS's as they seen to have their own set of requirements that don't fit the norm.
Please be careful, I am just concerned.
FSTJACK said:
Well all I have done is put in hi-flows. The muffler is after the turbo. I'm still running rich. Next step will be for some meth a tune from Roe. But I'm not turning up the boost. And really my boost seems a little lower now but steady. I'm not going to squeeze every bit of HP out of this thing. But STS with 5 psi were running 550 RWHP and 550 TRQ. The highest HP I have seen is 478. So I think I can get some more power out of it, just doing it within reason and slowly. I don't know when I will be in a position to get a tune from Roe.
Support Us
Become A Supporting Member Today!
