turbo
Senior User
Joined: Feb 2006
Posts: 420
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From: Alamo city
Thanx for the additional info Ernest.
I have plans to either change out my turbo wheel or upgrade the turbo altogether this spring. Funny, I keep saying I'm going to do all sorts of repairs/mod's this "spring", but in comparison to Idaho, this S Texas weather is spring...and on some days like summer in Idaho. Guess I'm running out of excuses.
I wonder if anyone has ran any tests (other than SOP data) on the difference between running a pre-99 versus post-99 wheel...as well as data addressing the affects of running the TAG units?
I have plans to either change out my turbo wheel or upgrade the turbo altogether this spring. Funny, I keep saying I'm going to do all sorts of repairs/mod's this "spring", but in comparison to Idaho, this S Texas weather is spring...and on some days like summer in Idaho. Guess I'm running out of excuses.
I wonder if anyone has ran any tests (other than SOP data) on the difference between running a pre-99 versus post-99 wheel...as well as data addressing the affects of running the TAG units?
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
How could the TAG possibly help with power on a direct injected diesel? The TAG, "throttle body spacers," and other similar vortex devices might be beneficial on a gasser where the swirling air can help mix in the fuel better for better burning. But on a direct injected diesel, where all the air is already pulled into the cylinder and crammed into a tiny space before the fuel is injected, how can such a device be beneficial?
If the argument is that it helps your turbo pull more air (as in you are now benefiting from more air, because you were a bit heavy on fuel before), I'd argue you need a less restrictive filter or a bigger turbo, or need to check for boost leaks.
Maybe I don't quite understand the concept behind the TAG for our trucks...
If the argument is that it helps your turbo pull more air (as in you are now benefiting from more air, because you were a bit heavy on fuel before), I'd argue you need a less restrictive filter or a bigger turbo, or need to check for boost leaks.
Maybe I don't quite understand the concept behind the TAG for our trucks...
Postmaster
Joined: Jun 2006
Posts: 2,647
Likes: 0
From: Fulltime RVer
ryaneverk2, My "water down the drain" analogy on the previous page is the best explanation I can come up with. If the air entering the turbo inlet develops a vortex like my wide open sink drain does, then less air flows in. I know my sink empties faster with the diffuser on the drain than without it. In any case, I think my problem was that the variations in air density due to the vortex caused the load on the compressor to vary with a fractional second time constant, which in turn caused vibration loading on the turbo thrust bearings. At least that is what it sounded like to me, as if someone had a hold of the compressor and was rattling it against the bearing cage.
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brokeasajoke
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Jul 18, 2014 09:47 PM
