Best Location For Pyro

[MasterChief]

Quick question for you-all.



I just received my gage kit from DieselMannor. Their instructions tell you to place the Pryo thurm-cup pre-turbo // drill and tap into the top of the manifold. My question is, will this give me the best reading, and is this the most common location.



Thanks

Mike

 

[Highfinance97]

Best place for a true reading is pre-turbo, some people put it in the downpipe but they say its 200-300 degrees differance



Michael

 

[CPavlic]

Mike, you will get a more acurate temp reading if you mount the thermocoupler pre turbo in the manifold. The only thing you have to be careful of is getting metal shavings in your turbo, which can cause some serious damage. The safest and longest way to do it is to pull your turbo and your manifold then drill and tap and wipe it out, but there are some tricks you can do where you dont have to pull anything out which is a lot easier considering your turbo is way down there. The only trick I have seen done is to drill and tap the hole with the engine running so that the exhaust pressure will blow all the shavings out. Now I didnt do it I just watch a mechanic at a diesel/ performance shop do it and it worked perfectly. I personally wouldnt have the b@##$ to do it myself. Maybe somebody else can chime in with another idea.

Clayton

 

[MRaynor]

I just installed mine this past weekend and I put mine pre-turbo in the manifold, between the 3rd and 4th cyl. It seems to work great.



Mike

 

[Highfinance97]

Well you could just take the turbo off and put a magnet in the flange to catch the shavings



Or use a vacuum in the flange :-laf



Michael

 

[rbattelle]

Mine is post-turbo. I think the location depends on what you intend to do with the truck. Fuel enhancements? Pre-turbo. Stock engine? Post-turbo.



Just my opinion.



-Ryan

 

[MasterChief]

Great point about the metal shavings. Are their any other tricks? I am having Custom Trucks of Pace Florida do the work so maybe they already have a way to do it.



Mike

 

[MasterChief]

The main reason for the install is for montoring my EGT temp while towing my Fiver. If I can install it post turbo and and still get the type of reading I need that woud be great.

 

[MRaynor]

That is the way I did mine and I have never done anything like that before. make sure you have on safety glasses, that crap will blow. It will also get hotter than h*** especially when you tap the thing. It was an adventure though. :-laf :-laf Mike

Mike, you will get a more acurate temp reading if you mount the thermocoupler pre turbo in the manifold. The only thing you have to be careful of is getting metal shavings in your turbo, which can cause some serious damage. The safest and longest way to do it is to pull your turbo and your manifold then drill and tap and wipe it out, but there are some tricks you can do where you dont have to pull anything out which is a lot easier considering your turbo is way down there. The only trick I have seen done is to drill and tap the hole with the engine running so that the exhaust pressure will blow all the shavings out. Now I didnt do it I just watch a mechanic at a diesel/ performance shop do it and it worked perfectly. I personally wouldnt have the b@##$ to do it myself. Maybe somebody else can chime in with another idea.

Clayton

 

[Highfinance97]

The main reason for the install is for montoring my EGT temp while towing my Fiver. If I can install it post turbo and and still get the type of reading I need that woud be great.

if you dont have time, Put it after the turbo just keep in mind when you look at the gauge its a couple hundred degrees differnce



Michael

 

[MasterChief]

if you dont have time, Put it after the turbo just keep in mind when you look at the gauge its a couple hundred degrees differnce



Michael

I think I like the post Turbo better. I don't want to risk damaging my turbo, and I just don't like the idea of drilling into my manifold. I want to keep the engine as stock as possible. Thanks all for the the great feedback.



v/r

Mike

 

[rbattelle]

I think I like the post Turbo better. I don't want to risk damaging my turbo, and I just don't like the idea of drilling into my manifold. I want to keep the engine as stock as possible. Thanks all for the the great feedback.



v/r

Mike

Post turbo will work just fine if you're keeping the engine stock. I have this one , which is color-coded for post-turbo installation.



-Ryan

 

[DPKetchum]

Pre turbo is where it needs to go if you want accurate. And its a easy install. Go slow and use greese. As it breaks through use a pencil magnet. HUNDEREDS if not THOUSANDS done this way.

 

[RMalone]

I agree for your intended purpose post-turbo is fine. Keep in mind though that most of the egt numbers that are posted refer to pre-turbo as that is where most guys measure. After you get 'er done do some searches here and ask the TDR guys that run post-turbo what kind of numbers you should expect and then your off and running.

 

[JKennedy]

Drilled mine pre-turbo- took it easy when breaking through the inner wall of the manifold. Took a good "earth" magnet and magnetized the drill-bits. First with a pilot drill, then with the drill bit for the 1/8" npt. Once the larger hole was drilled, took a pencil magnet and got all the chips out. Did this again once the hole was tapped- Worked great. I located the hole near the #3 cyl (between #3 and #4), where the chips fell inside was on the horizontal portion of the manifold so I was assured that no chips fell into the turbo.

 

[DPKetchum]

I've asked several times over several years what the post turbo numbers where. I've NEVER gotton a good or same answer twice. Anyone got any post turbo numbers? That ADDING a few hundered degrees(is that two hundered or three hundered or?) dosen't sound wise pulling heavy weight in hard pull conditions. Just my thoughts on a post turbo install.

 

[MasterChief]

Next question is what is the best way to mark the limits on the glass face of the gage. Mine do not come with limit indications (color coded) On aircraft gages we use to use a little strip of red tape, not to sexy...

 

[MasterChief]

Next question is what is the best way to mark the limits on the glass face of the gage. Mine do not come with limit indications (color coded) On aircraft gages we use to use a little strip of red tape, not to sexy...

__________________

 

[cojhl2]

Myexperience over the years running Class 8 engines 300-525 hp and Pyros on either side is this: For preturbo never exceed 1200 deg and post never exceed 900.



These rules should always hold I would think.

 

[JohnCooper]

Next question is what is the best way to mark the limits on the glass face of the gage. Mine do not come with limit indications (color coded) On aircraft gages we use to use a little strip of red tape, not to sexy...

Or you could use an old racing trick, rotate gauges so that when the gage is reading normal or at a max limit the needle is pointing straight up, if over limit easy to spot when needle is to the right of straight up.