i wasnt saying their junk....just to clarify

i am obviously an autometer fan, but i sure would like to know what causes the problems with isspro's. it would save me alot of time. i do alot of work on pullin tractors and trucks(all diesel) and i have found that the most acurate "boost" gauge is a good oil pressure gauge with the word "boost' on it in marker haha

no kidding
thats my standby gauge to put on the machine for testing

 

just to rain on a parade, pressure guages do not like vacuum unless it is a compound guage (reads both pressure and vacuum). 29" of vacuum is equal to 22 psi roughly. the one thing that will ensure any analog guage will not flutter is the amount of dampening. if you want the best in real time referance use analog, if you want accuracy use digital! no matter who makes it!

 

Ok, where do we get such a valve? I have a Banks, and it has the needle flutter (no sound thankfully), and it doesn't have any adjustment possibility.

 

You can try your local Industrial Supply store or this link...

http://store.yahoo.com/fittingsandad...inneedval.html

 

Sure seems like allot to do.....could it just be a bad gauge

 

Seems to be a common thread with the ISSPRO gauges but.........I have Auto meter gauges in my Jeep and the temp gauge is intermittent. I have sent them several emails and I am disappointed. Now get this, I told them it was a mechanical gauge that is intermittent. They replied with check my electrical connections. I replied with, "it's a mechanical gauge". They replied with check your ground. I replied with "MECHANICAL GAUGE GUYS!". They said "oh, check your tubing for kinks". These are new gauges but the guy I bought the Jeep from couldn't find his receipt for them. They haven't offered ANY help. I wish I hadn't put Auto Meter gauges in my truck now. They don't stand behind their gauges and have VERY poor tech support as far as I am concerned.

You listening Auto Meter?

 

Update:

DIS is sending me a new Boost gauge. I hope that takes care of the noise.

I have not seen any instance of the needle fluttering (even when I get my bi-focals right up to the gauge...), only the annoying noise. Installing the second orifice (first one is inside the gauge port itself) improved the noise problem, but did not eliminate. I didn't try to measure the size of the orifice, but my trained eye.... says it is definitely smaller than a #60 drill. When I get time, I'll pull the orifice out and try to figure out how big the hole is. The noise seems to be caused by the pulses in pressure which occur at a resonate frequency of something in the gauge. I probably can find a needle valve in my junk box, or if not, I'll take a 1/8 NPT fitting and make my own to try to dampen the pressure pulses to the gauge.

As to why I chose the ISSPRO gauges:

I liked the way that the black gauge with white numbers and orange pointer complimented the stock instrument panel. Using the green bulb covers, it made the whole package look as if it belonged in the truck, very smooth and seemless looking. Doesn't really look like it is an aftermarket install.
Just a personal choice based on asthetics. DiProcol is the only other gauge I've seen pictures of, that comes so close to looking like the stock instrument panel. That doesn't mean that there aren't other choices which look good and work well, it just means that I didn't see them when I was buying....

My nephew ( who unfortunately has a Dodge Cummins ) liked what he saw in my installation so much that he wants me to get a set for him and help him install them. His comment was that he liked the way the ISSPRO gauges went so well with the stock instrument panel....

Oh well, my .02 worth.

 

All of us will usually go with the gages that we have had a good experience with. In my case, I will continue to stick with Autometer gages because I've never had a problem with their gages after 30+ years of use and hundreds of gages.

Sometimes one gage will sour someone on a product. That is what customer service is all about. If a product fails often enough with enough customers, the company goes out of business.

Autometer has lots of satisfied customers so they continue to be #1 in gage sales.

 

Hummmm... ...Looks like we are still at the level of he said she said and I like mine.

If your banging the ## ## out of a 30-35 psi gauge.....might be the problem.

I know they offer a 40lb gauge.. .try one of those...and if you can peg the 40lb boost..... let me know.....cause I want to know what your doing...

Working my goal of 200 posts by next week.....I don't want "Mr T" showing up on my computer.

 

I should toss in that I'm really happy with my X-Monitor - and I still have my driver's door pillar handle.

Too late for you now, but just in case someone else is looking for new gauges.

 

I liked the looks of the X Monitor.... I did not like the "Jesus Bar" on the A-Pillar so I loved doing the pillar gauges. I have my temps right at eye level.


Working my goal of 200 posts by next week.....I don't want "Mr T" showing up on my computer.

 

Ok. Finally had time to install the replacement gauge and test.

Noise is decreased, but did not go away completely.

I have pasted below the text from tech support.....

Don,

To my knowledge a smaller orifice will not help. I had to get the ones we have special made so I don't know of any smaller ones being available. The buzzing sound continuing after we have added the orifice is extremely rare. Isspro has researched the sound and could never duplicate it. At one time we put as many as 5 gauges on one truck all of which made the buzzing noise. We then took these same gauges and put them on other trucks and got no noise. This made us think that the truck itself has something to do with the buzzing but we have not been able to determine exactly what. The first guy finally had to live with it. I know this isn't what you wanted to hear but I don't know what else to suggest.

To which I replied -

In the other case of the five gauges, did you try another manufacturer, or were they all ISSPRO?

Have you had any of these buzzing/rattling issues with other brand boost gauges?

Did it make any difference of they were 30 or 60 lb. gauges?

I have machine tools in my shop, and I may see if I can make a smaller orifice. I don't know what size hole is in the one you supplied, but I have drills down to #80. If it is smaller than that, then I am probably wasting my time.

I would be willing to try another brand of gauge if it has a black face, white numbers and orange pointer.

I have saved the old gauge, still have the box and am willing to ship back whatever we try that I don't keep.


To which he replied -

We have had some of the same issues with other manufacturer's gauges but this case was all Isspro. We also carry Autometer which are pictured and priced on our website at http://www.dieselpage.com/ameter.htm. You are free to choose one of those to try if you would like. I would have to have both of the Isspro back but would credit you for the full price of the Isspro if you purchase the other from me. Then I still can't promise that the buzzing will go away. It has been several years since we initially got the orifice fittings made and I no longer have the specification for the orifice so I don't know what size it is.

I haven't decided what I'm gonna do next.

 

Problem Solved!

This morning, I removed the fitting with the orifice to see what size hole was in it. Using my small number drills I decided that it was a #71 hole which should be around .025 in diameter. I soldered the hole shut, re-drilled it with a #80 drill (.016), and re-installed in the truck. Took a test drive up the hill and PRESTO, no more buzzing noise. I was concerned the the Boost gauge may respond sluggishly with such a small sample of air, but I can't see any difference at all.

Now I'm really happy with my gauges!

4" exhaust to be installed next Friday!!

 

I am going with an Isspro boost myself soon on an '02 PSD. In my research I have found the following.

As previouly mentioned- with a small flat blade screwdriver, tighten the small jet inside the pressure fitting of the gauge. "This will prevent some/most of the rattling noise that is sometimes heard at the boost gauge."<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
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Otherwise: "the Variable Geometry Turbochargers (6.0L) sometimes cause a rattling sound within the boost gauge if the boost gauge tubing is spliced into the truck's MAP sensor hose. To cure this you will need to drill and tap the intake elbow (for the boost pressure line) instead of splicing the into MAP hose."

So if the corrections previously discussed in this thread don't make fix, go with the tapped fitting at the intake elbow. I can feel your pain. Hope this helps!

This issue is thoroughly covered at Dieselmanor.com intallation intructions.