Procharger boost loss question
Procharger boost loss question I have a stock motor/d1 combo. Last time I looked and when it got tuned a few months ago it made just under 11# on my gauge. I checked it on a 4th gear pull and on my boost gauge it only hit 8#. I was told the boost loss was due to the temperature change. It was probably 45ish when I got it tuned and was 85 today. Is this possible that the temp caused the boost loss? I'm going the check belt tightness when I get home but its never been a issue before and don't see any belt dust on anything.
You'll loose a bit. I have hit 15#'s of boost when it was about 40 degrees outside, but would barely hit 11#'s when it was 90. So I would say its probably the temp. Try running it early in the morning or late at night when its cooler and see if you gain a little more boost, that will tell you for sure.
With a centrifugal style supercharger, it won't be affected by the heat soaking that a roots style will. So it doesn't really matter if you railed on it under boost for an hour straight, it should perform the same. Its the outside air temps its pulling in that will dictate the amount of boost it will be able to output.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo You'd see belt dust if you had belt slip, plus you'd likely see the boost suddenly plateau while the RPM's continue to climb.
I really think your boost loss is caused by temps, but if its not there are other things besides belt slip that can cause it.
A boost leak, BOV problems, supercharger starting to fail ect.
I really think your boost loss is caused by temps, but if its not there are other things besides belt slip that can cause it.
A boost leak, BOV problems, supercharger starting to fail ect.
You don't even have to wait until its "cold". If it hits 85 during the day, it probably cools to about 65 at night depending on where you live. You will see a difference between 65 and 85.
Humidity makes a difference as well. Just pick a night this week that is coolest and has the lowest humidity.
www.wunderground.com has everything you need to check the temps, and humidity level per hour for your location.
www.wunderground.com has everything you need to check the temps, and humidity level per hour for your location.
Looks like it was a faulty gauge or maybe a crimped/broken line going to boost gauge. I havnt dug into it yet. Loged it last night and map 2 bar came out to 179 kpa which comes out to 11.4# of boost.
Well, the important thing is that you are not loosing boost, but more likely a faulty gauge.
What kind of boost gauge are you running? Mechanical boost gauges have been known to be innacurate (I run the more expensive electronic boost gauge). The vacuum line should be easy to trace to verify there are no kinks and the connections are solid.
What kind of boost gauge are you running? Mechanical boost gauges have been known to be innacurate (I run the more expensive electronic boost gauge). The vacuum line should be easy to trace to verify there are no kinks and the connections are solid.
Here's the one I have> http://www.summitracing.com/parts/atm-3377/overview/
Heres a little video I made showing how it works a little> http://www.streetfire.net/video/making-some-boost_145597.htm
Heres a little video I made showing how it works a little> http://www.streetfire.net/video/making-some-boost_145597.htm