6v92ta turbo boost

luvrbus · November 21, 2011, 05:26:10 AM

Clean it before removing the plug it has to be connected between the blower and the turbo the horn bolts on to the top of the blower it is not really part of the blower install there and the gauge will work

good luck

sledhead · November 21, 2011, 05:50:05 AM

I feal like a dummy . tried left and right came off with no problems. hot side is the easy side to hook it up to , just need 3/8 " to 1/4 " adp.

demodriver · November 21, 2011, 06:21:46 AM

Quote from: Brassman on November 20, 2011, 09:16:16 PM
The exhaust gas pyrometer goes before the turbo. Exhaust gas inlet temperature. Too high=new turbo.

a EGT guage goes after the turbo, not before.

luvrbus · November 21, 2011, 07:51:20 AM

Not entirely true Eric some DD's have probe taps on both manifolds for the EGT gauge fwiw

good luck

demodriver · November 21, 2011, 09:14:03 AM

Ive never saw one before. Thats new to me but I havent been around dd to much either.

luvrbus · November 21, 2011, 09:50:53 AM

It is better on the exhaust side of the turbo those little probes can cause a mess when they brake off and get into the turbo

good luck

Brassman · November 21, 2011, 10:26:24 AM

Why would one want to know the temperature after the turbo? Granted, my experience is marine, and with larger engines, but how hot the tailpipe gas is, is info you don't need.

HB of CJ · November 21, 2011, 11:09:32 AM

Gets pretty hot there. Also try to mount the boost sensor as close to the blower as possible as it will give you a more accurate reading on the amount of boost going into the engine. And...if you want toos, mounting an intake air pyrometer sensor next to it will let you gage your intercooler intake air temp. Cooler is better. HB of CJ (old coot)

Brassman · November 21, 2011, 11:51:46 AM

So, to prove myself right I did some internet searching. The temperature you want is the turbine inlet temperature, and as luvrbus posted, some manufactures do indeed recommend the probe be placed after the turbo--to prevent damage if the probe fails (just as luvrbus said.)

I guess you infer the turbo inlet temp.

sledhead · November 22, 2011, 05:16:02 AM

thanks for the help . installed in the right spot (hot side ) works great 23-25 lbs under load . thanks again dave

TomC · November 22, 2011, 08:02:51 AM

On all trucks I've seen (and I've seen alot since I sell them) the turbo heat sensor is always after the turbo. Mainly-sometimes the sensor bulb will break off they don't want it going through and destroying the turbo. The only time I've seen sensors before the turbo were on really big Diesels. I saw 4 Wartsilla 8 cylinder engines used to generate electricity on the island of Kauai in Hawaii. They had individual pyrometers (exhaust gas temp) on each cylinder, along with overall exhaust temp before and after the turbo-and a tachometer on the turbo.
On a 2 stroke engine, exhaust temp is really not needed-they flow so much air that exhaust temp rarely will get above 900 degrees. Now if you have a big injector engine-that's different-I mean a 90 injector 71 series or a 110 injector 92 series. Good Luck, TomC

boogiethecat · November 22, 2011, 08:36:57 AM

Regarding the before or after the turbo position for EGT sensors, think about it this way- it really doesn't matter from the standpoint of telling what your engine is doing. What matters is what your engine is doing right now, vs what it usuallly does under similar circumstances. Absolute temperatures don't mean a thing- well to some engineering types they do but the reality is that you're using the gauge to compare current engine operating conditions to a baseline. For that, it makes no difference where you place the sensor, just like it makes no difference what is printed on the gauge... it could be 500 to 1500 degrees, and it could just as easily be A through Z, with some red paint where the danger zone is in either case. It's all about comparing what's happening right now to what usually happens... when you see a difference, no matter where the sensor is or what the scale reads, you know something's going on that might need your further attention.
That said, the argument to place the sensor after the turbo due to possible breakage is the smartest of the choices. It'd be stupid to trash a $2000 turbo for a $10 broken probe!!

And sled head, I still want to know what's making your exhaust system have a 5PSI back pressure! Seems a bit much....

sledhead · November 22, 2011, 09:18:03 AM

when I had the boost pressure pick up in the down pipe to the muffler. at full rpm gage was about 3-5 lbs . I gess back pressure from muffler dave

demodriver · November 22, 2011, 10:10:00 AM

Tom C all that I have saw where after the turbo also. Most of what I have been around are pulling trucks (all cummins) and no one is going to risk a turbo with the money they have invested in them.

I will continue to put mine after the turbo on everything including my trucks. If you want to put it before the turbo go for it. IMO its a preference thing. Theres no 100% right or wrong way to do it.

Eric

Brassman · November 22, 2011, 10:22:12 AM

I would do what the engine manufacture recommends. In my 35 years on the marine side never had, or heard of, a pyrometer probe let loose and trash the turbo. And yes, there where also pyrometers at every exhaust outlet, and that was even on '71's and cummins 855's, though it was next to impossible to keep them working, and they would eventually be pulled.