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  #1  
Old 12-18-2010, 04:43 AM
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EGT gauge

Often various members talk about concerns about damage to motors, especially if turbo-ing a n/a.
I have a JD tractor that was turboed about 20 years ago. It was done properly, new valves/oil pump/pistons/ bigger oil cooler etc. It had a EGT gauge on it & you could see the temp rise when it was working. The gauge eventually vibrated to pieces. I was quoted over $100 for a replacement gauge.
A friend suggested a cheap Chinese on on ebay. After a bit of drama they let me bid on it ( they had a block on bids from Australia).
I got it for a few $$.
Has any one had any experience with these?
If it turns out to be any good, I will let every one know. They have a number of them as buy it now for a shade over $20. This is the item number on ebay.

180593379978

Foot note;
While I realize that our site is sponsored by the buyparts, I dont believe that this is in competition with them. I am more interested in finding out if any one has used one.

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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #2  
Old 12-18-2010, 10:36 AM
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I'm curious too. I haven't used one or seen one before. If the gauge only goes up to 1200f, it seems a little low. I think the one on my Bluebird goes up to 1500-1600?
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  #3  
Old 12-18-2010, 12:05 PM
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Look again - it goes up to 1200C (=2192F). That's more than enough. Actually, prospective Mercedes turbo buyers would be more interested in a lower range with more resolution at the lower end. The VDO gauge in my '87 300D Turbo (W124, OM603) goes up to 1650F but rarely exceeds half of that. On the eBay gauge, that would leave the pointer at about 450C. That is, however, a very good price and certainly better than nothing.
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  #4  
Old 12-18-2010, 01:47 PM
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I agree with Kerry, 1200F is a bit low for the upper threshold. The gauge should tell you more than just the normal operating range, plus gauges are usually most accurate near half-scale, not as much so at full-scale. I'd have no problem seeing mine hit 1200F but I'd want to know it's accurate there.

Maybe a post-turbo gauge wouldn't need as much range?
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  #5  
Old 01-08-2011, 05:44 AM
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Well it arrived the other day.

Its a Dragon Gauge brand. Lots of Chinese writing on the box. They have a range of gauges.
The pick up has stainless braided cable, looks well made.
The gauge is a plastic cased type with a dark glass so it can only be read when the ignition is on so that there is power to the LEDs that light it. It looks quite robust. It has a range of 1200C (not F) so when things get hot you will be looking at mid range temps, that is good as that is where this type of gauge has the most accuracy.
I am very happy with it, especially at the price.
It gave what looks like the correct reading when I connected it to the existing sensor that one of my tractors has. It gave the same reading when I used its own pick up.

I will probably buy a second one as I have another application for it.

So any one who is using a turbo diesel under significant load for extended periods, like we do with earth moving gear or has a turbo diesel in a high load road haul application or has put a turbo on a N/A, may like to consider one of these.
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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #6  
Old 01-08-2011, 08:13 AM
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That is a very good price - and all nice analogue electrics too - weird shipping exclusions - it excludes China too (where it is shipped from).
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  #7  
Old 01-08-2011, 08:19 AM
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Quote:
Originally Posted by Army View Post
That is a very good price - and all nice analogue electrics too - weird shipping exclusions - it excludes China too (where it is shipped from).
There was an exclusion on Australia as well. I contacted them & they exempted me because I am such a nice person, yes I can turn on the charm!
The one I got was on auction. I was the only bidder. The buy it now ones are cheap enough though.
You dont need one unless you are up to no good with that motor of yours !!
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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #8  
Old 01-08-2011, 09:29 AM
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Layback40, what is the thread pitch of the probe? Pics show 2 sensors. How do you mount the one that looks like a cup? So it's good quality? I thought everthing made in China is cheap and crap?
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  #9  
Old 01-08-2011, 09:45 AM
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Its just a standard taper thread.
I scanned it for some one the other day.
You should be able to work it out from this. It fitted in where the other probe I had was.

The quality is as good as many of the other gauges i have got from the performance parts places. The next cheapest I could find was like 3X the price.
I am using it in a much tougher environment than in a car.
Attached Thumbnails
EGT gauge-egt.jpg  
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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #10  
Old 01-08-2011, 10:09 AM
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Probably 1/8 NPT. I'd like something smaller like 10-32 but they are much less common. For the price can't be too pickey ha? I may buy one.
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83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked
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  #11  
Old 01-08-2011, 10:12 AM
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Quote:
Originally Posted by funola View Post
Layback40, what is the thread pitch of the probe? Pics show 2 sensors. How do you mount the one that looks like a cup? So it's good quality? I thought everthing made in China is cheap and crap?
OK after looking at the pix a little closer, that cup thing must be a lamp holder!
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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked
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  #12  
Old 01-09-2011, 09:01 PM
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Thanks for the info on the gauge! I just sent an email to the seller to find out which probe they use.
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  #13  
Old 01-30-2011, 05:51 PM
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Bought the chinese one on ebay also. worked for about 10 minutes then failed. The sending unit is still good, connected another gauge to it and it reads just fine, so the gauge itself is what failed.
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  #14  
Old 01-31-2011, 12:31 AM
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I wouldn't buy anything but ISSPRO for gauges. VDO is nice but the visibility is crap.

ISSPRO on outsides, VD in the center.
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EGT gauge-lmn-center-gauges-night.jpg  

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