pyrometer temp?
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Senior User
Joined: Jan 2002
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From: Texas
pyrometer temp?
I have my pyrometer installed after the turbo the guys a powerstrokecentral.com say that my reading will be inacurate. has anyone installed one after the turbo and how many deg. will it be off??
Posting Guru
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pyrometer temp?
Pre-turbo is the most accurate, it tells you exactly what temp the exhaust is at when exiting the engine. Post turbo readings can vary from 100-500*F from the pre turbo readings. Temps above 1250*F pre turbo can start to melt down the engine if those temps are sustained.
Les
Les
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Joined: May 2000
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pyrometer temp?
[updated:LAST EDITED ON 15-May-02 AT 06:37 PM (EST)]I have mine 2 inchs after the turbo. I will check the temp with a infared system when I get a change. If am towing and running 1000, 1200 degrees EGT I doubt there will be much loss after things stabilized.
When towing, flat land, no hills in the Keys, 60 mph, air temp 85,
in OD
exhaust temp = 750, Trans temp = 145, turbo = 9 psi, mpg = 12
If you drill and tap the manifold you can get into the exhaust stream. I have extended warranty coverage bumper to bumper for 100,000 miles. If the manifold where to crack it would be a BIG BILL $$$$$ to replace, not covered. Clamp one on the outside of the pipe between the manifold and the turbo and you measure the outside pipe temp???? Sooo I put mine where I did. Richard
My ride is a 2000 F350 Super Duty, Lariat, PSD, 4X4, long bed, 4.1 rear, automatic, SRW, with added stainless steel 4" exhaust, turbo to 5" tip, with a "see thru" muffler and EGT, Trans temperature with turbo psi gauge. I tow a 12,000 pound 28.6 ft travel trailer
When towing, flat land, no hills in the Keys, 60 mph, air temp 85,
in OD
exhaust temp = 750, Trans temp = 145, turbo = 9 psi, mpg = 12
If you drill and tap the manifold you can get into the exhaust stream. I have extended warranty coverage bumper to bumper for 100,000 miles. If the manifold where to crack it would be a BIG BILL $$$$$ to replace, not covered. Clamp one on the outside of the pipe between the manifold and the turbo and you measure the outside pipe temp???? Sooo I put mine where I did. Richard
My ride is a 2000 F350 Super Duty, Lariat, PSD, 4X4, long bed, 4.1 rear, automatic, SRW, with added stainless steel 4" exhaust, turbo to 5" tip, with a "see thru" muffler and EGT, Trans temperature with turbo psi gauge. I tow a 12,000 pound 28.6 ft travel trailer
Tuned
Joined: Jun 1999
Posts: 495
Likes: 2
From: Spearfish SD
pyrometer temp?
I have to agree with newtruck. Initially there may be quite a spread in temps between pre and post turbo EGT readings. But once everything heats up, the temps will be close. Probably not more that 100-150 difference.
My temps run right there with newtrucks temps. I can hit 1100* post turbo pulling my 3500# boat and trailer.
Although rare, thermocouples can and do break off. I personally have changed several turbos that have had a thermocouple for lunch. It is not a pretty sight. These were all on Cummins engines on OTR trucks.
My temps run right there with newtrucks temps. I can hit 1100* post turbo pulling my 3500# boat and trailer.
Although rare, thermocouples can and do break off. I personally have changed several turbos that have had a thermocouple for lunch. It is not a pretty sight. These were all on Cummins engines on OTR trucks.
Posting Guru
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pyrometer temp?
>My temps run right there with newtrucks temps. I can hit
>1100* post turbo pulling my 3500# boat and trailer.
1100*F post turbo can be as high as 1400*F or higher pre-turbo pulling that boat and trailer. All I can say is it's your engine.
Les
Tuned
Joined: Jun 1999
Posts: 495
Likes: 2
From: Spearfish SD
pyrometer temp?
>1100*F post turbo can be as high as 1400*F or higher
>pre-turbo pulling that boat and trailer. All I can say is
>it's your engine.
And your information comes from???? And you are 100% correct, it is MY engine.
>pre-turbo pulling that boat and trailer. All I can say is
>it's your engine.
And your information comes from???? And you are 100% correct, it is MY engine.
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Senior User
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From: Texas
pyrometer temp?
so if i want to change mine to pre turbo what would i have to do if i already have it installed after the turbo??
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From: Elk Grove Sacramento
pyrometer temp?
Drill a 1/4" hole in the tube exiting the drivers side exhaust manifold going to the bottom of the turbo. You can either get a weld on bung for threaded thermocoupler or get a clamp on version. I have a clamp on from Isspro pre turbo easy to install and accurate.
Posting Guru
Joined: May 2001
Posts: 1,702
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pyrometer temp?
>>1100*F post turbo can be as high as 1400*F or higher
>>pre-turbo pulling that boat and trailer. All I can say is
>>it's your engine.
>
>And your information comes from???? And you are 100%
>correct, it is MY engine.
My information comes from driving a truck that had both pre and post turbo pyros. The post pyro comes up to temp much slower than the pre turbo pyro.
Les
>>pre-turbo pulling that boat and trailer. All I can say is
>>it's your engine.
>
>And your information comes from???? And you are 100%
>correct, it is MY engine.
My information comes from driving a truck that had both pre and post turbo pyros. The post pyro comes up to temp much slower than the pre turbo pyro.
Les
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