Fluttering Boost Gauge?
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Joined: Jul 2008
Posts: 11,231
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From: Thomasville, GA
Fluttering Boost Gauge?
Is that normal?
It's a Autometer Z series, and it's steady up to about 10psi and then above that it flutters pretty bad.
At WOT I was pegging a little over 30psi but it was fluttering a little above and below that so I was just taking the middle of it and calling it good...
Is there any way to fix this?
It's a Autometer Z series, and it's steady up to about 10psi and then above that it flutters pretty bad.
At WOT I was pegging a little over 30psi but it was fluttering a little above and below that so I was just taking the middle of it and calling it good...
Is there any way to fix this?
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Joined: Jul 2008
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From: Thomasville, GA
Could be the way I T'd it. I'll have to try to put together a better way.
I have about 6" of extra map line coming off the T to a barbed fitting where my nylon line meets up with it.
Seems to work fine, just flutters at higher boost.
I have about 6" of extra map line coming off the T to a barbed fitting where my nylon line meets up with it.
Seems to work fine, just flutters at higher boost.
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Joined: Jul 2008
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From: Thomasville, GA
When I get a Intercooler installed I'll plumb it right into the spider... for now Just wanted something easy to install.
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Joined: Jul 2003
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From: Newport, WA
Brownie you might have a leak somewhere. Double check all your fittings (and teflon tape them if you didn't do it already). T'ing into the MAP line is fine... not the absolute best way to do it but it will be fine that way. I wouldn't worry too much about how you set your T up either that shouldn't matter. Also make sure that your tubing going to the gauge isn't kinked or pinched anywhere.
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Thread Starter
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Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
Brownie you might have a leak somewhere. Double check all your fittings (and teflon tape them if you didn't do it already). T'ing into the MAP line is fine... not the absolute best way to do it but it will be fine that way. I wouldn't worry too much about how you set your T up either that shouldn't matter. Also make sure that your tubing going to the gauge isn't kinked or pinched anywhere.
I may have tightened down the compression fitting on the gauge a little too much and pinched the line... I'll need to get another compression piece and re-do it to be sure.
Everything else is working great. EGT's look good. It's just crazy to me how much these trucks DON'T make boost just driving around normally. You really need to get into it to make any boost over 5psi or so.
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Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Turbos only work under a load.
No load, no boost.
Thats why super chargers are quicker off the line.
But are only limited to engine RPM's.
So, super charger and turbo for the win!
So tempted to get one of these little car super chargers.
No load, no boost.
Thats why super chargers are quicker off the line.
But are only limited to engine RPM's.
So, super charger and turbo for the win!
So tempted to get one of these little car super chargers.
Butt-Head
Joined: Apr 2004
Posts: 9,457
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From: Reed Point, MT
Normal condition.
There are a few forces at work here, but the main one is the lack of intake-side volume to act as a "buffer" for the combination of intake valve/manifold pressurization events and turbine drive speed variances due to exhaust pulse irregularities.
There are a few forces at work here, but the main one is the lack of intake-side volume to act as a "buffer" for the combination of intake valve/manifold pressurization events and turbine drive speed variances due to exhaust pulse irregularities.
