whats normal EGT?
#4
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I don't know the temp of the exhaust but the turbo is made to withstand 850-900C being noramlly made of HIGH SILICONE CONTENT SG IRON, but some are made of a HIGH NICKEL CONTENT CAST IRON able to withstand over 1000C
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Inconel is a very good material for turbo applications, and is often used (turbine wheel, turbine housings, wastegates).
There have been ceramics used in some production cars (can't remember which, think it was a Japanese make) and from what I can remember were relatively fragile? Ceramic ball bearings have been used in roller bearing turbos for a while.
There have been ceramics used in some production cars (can't remember which, think it was a Japanese make) and from what I can remember were relatively fragile? Ceramic ball bearings have been used in roller bearing turbos for a while.
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#10
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Matters on the spec of the engine, fuel, fueling and spark.
i see 880-910oC in my cossie, but thats on a std ish c/r engine, running 450ish bhp on road fuel.
i would say a lower c/r cossie will be more like 800 - 860 oC.
i see 880-910oC in my cossie, but thats on a std ish c/r engine, running 450ish bhp on road fuel.
i would say a lower c/r cossie will be more like 800 - 860 oC.
#17
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Originally Posted by Tim
totally pointless unless your sensors in the headers.
Then you think...damn, why did I put that there !!!
You are all mentioning turbos, manifolds, ceramic this and that....
Dont forget your exhaust valves !!!! they aint gona like getting cooked either.
#18
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Originally Posted by Tim
totally pointless unless your sensors in the headers.
i know what your saying,
But its not pointless at all. As its a CLEAR indicator.
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I always learned, that it is best, to place it in the hottest runner of the engine, because that is the actual temp, and not after the turbo!
Which one is the hottest exhaust runner at a Cosworth, if you are using std 4wd inlet manifold?
Regards
Which one is the hottest exhaust runner at a Cosworth, if you are using std 4wd inlet manifold?
Regards
#21
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ok so the temps in the headers read 400c and the after turbo reads 1200c how usfull is it then ? just telling you the turbo is cooking and theres nothin you can do,i dont mean leave them in the headers just use for setting up IMO ![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries
![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries
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#22
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am with tim on this one if it melts off its to late a molten bit of piston will fuk the turbo anyway
bit like a oil presure switch if the light comes on it had a kind way of saying get ya wallet out
i got a boss in each runner and one in the collector currently running the collector one only
bit like a oil presure switch if the light comes on it had a kind way of saying get ya wallet out
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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i got a boss in each runner and one in the collector currently running the collector one only
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#23
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Originally Posted by stevieturbo
Originally Posted by Tim
totally pointless unless your sensors in the headers.
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#24
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Originally Posted by Tim
ok so the temps in the headers read 400c and the after turbo reads 1200c how usfull is it then ? just telling you the turbo is cooking and theres nothin you can do,i dont mean leave them in the headers just use for setting up IMO ![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
I would be worried !!!
Who said the tips melt ? I had a head gasket fail on an engine before. The water rushing past broke the EGT probe, it went through the brand new turbo, destroying the turbine blades.
Ive heard of other failures with temp probes. Sometimes it just happens.
#25
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Originally Posted by stevieturbo
Originally Posted by Tim
ok so the temps in the headers read 400c and the after turbo reads 1200c how usfull is it then ? just telling you the turbo is cooking and theres nothin you can do,i dont mean leave them in the headers just use for setting up IMO ![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
if you melt 1 off in the headers then i think thats the least of your worries
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
I would be worried !!!
Who said the tips melt ? I had a head gasket fail on an engine before. The water rushing past broke the EGT probe, it went through the brand new turbo, destroying the turbine blades.
Ive heard of other failures with temp probes. Sometimes it just happens.
#26
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Whilst on this topic....
Whats the cheapest and easiest way to monitor EGT's, in 1 or preferably more cylinders ?
Normal EGT gauges are pretty expensive, and can only do 1 at a time.
And even better for the setup to give a 0-5v output for easy logging ?
Whats the cheapest and easiest way to monitor EGT's, in 1 or preferably more cylinders ?
Normal EGT gauges are pretty expensive, and can only do 1 at a time.
And even better for the setup to give a 0-5v output for easy logging ?
#29
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most people use a type-k thermocouple as a the temp probe,,, there there are others you can buy,,, one being a type-R,, of cause the output scales are different so you would need a type r reader
i think the top end of type-k's are 1100 degrees,,, so i hope no-one is going over that
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i think the top end of type-k's are 1100 degrees,,, so i hope no-one is going over that
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Which runner ( cylinder) is normally the hottest one, if you are using std inlet and exhaust manifolds?
So, which cylinder has the leanest AFR with WOT?
Regards.
So, which cylinder has the leanest AFR with WOT?
Regards.
#32
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Originally Posted by stevieturbo
Whilst on this topic....
Whats the cheapest and easiest way to monitor EGT's, in 1 or preferably more cylinders ?
Normal EGT gauges are pretty expensive, and can only do 1 at a time.
And even better for the setup to give a 0-5v output for easy logging ?
Whats the cheapest and easiest way to monitor EGT's, in 1 or preferably more cylinders ?
Normal EGT gauges are pretty expensive, and can only do 1 at a time.
And even better for the setup to give a 0-5v output for easy logging ?
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
https://passionford.com/forum/viewtopic.php?t=266954
i have used http://www.conrad-direct.co.uk/goto.php?artikel=100567 that does datalogging and peak hold etc
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#33
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Innovate stuff will monitor 4 channels at once, showing the highest, the average, or any one u may select. It also warns you, and of course has very powerful data logging.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
#34
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Originally Posted by Rick
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
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thats what ive been told by quality tuners also i will be using a audi tt sensor in the back the turbo exhaust housing wired to my new ecu then hopefully if it works itll back the boost and add fuel if it gets to hot
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Originally Posted by Rick
Innovate stuff will monitor 4 channels at once, showing the highest, the average, or any one u may select. It also warns you, and of course has very powerful data logging.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
out of interest how many people with views have tested this?
#37
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Originally Posted by zippyobrien
hmmm,
so if id seen 1100 degrees + in the down pipe off a skyline, that would be bad,
had it removed after the turbo change as the sensor had taken some abuse at some piont, look like it had been chopped my a stray turbo blade
so if id seen 1100 degrees + in the down pipe off a skyline, that would be bad,
had it removed after the turbo change as the sensor had taken some abuse at some piont, look like it had been chopped my a stray turbo blade
#38
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Originally Posted by Tim
Originally Posted by Rick
Innovate stuff will monitor 4 channels at once, showing the highest, the average, or any one u may select. It also warns you, and of course has very powerful data logging.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
Having a sensor after the turbo is fine, you just add on say 200 degrees for header temperature.
out of interest how many people with views have tested this?
#39
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Glad I saw this post
I have a tc-1 for the 4 header sensors
![](https://img.photobucket.com/albums/v11/scrote/TC-1.jpg)
and i use the pectel monitor for the one after the turbo.
after reading this post i found out the tc-1 has a programmable alarm so I am now gonna wire that up and set it to 900degreesC for top speed runs
a question
why does a mar-m shaft allow higher temps to be run? surely if it was in danger of melting the blades would melt first?
I thought it was maybe because of the shocks involved in ALS?
I have a tc-1 for the 4 header sensors
![](https://img.photobucket.com/albums/v11/scrote/TC-1.jpg)
and i use the pectel monitor for the one after the turbo.
after reading this post i found out the tc-1 has a programmable alarm so I am now gonna wire that up and set it to 900degreesC for top speed runs
a question
why does a mar-m shaft allow higher temps to be run? surely if it was in danger of melting the blades would melt first?
I thought it was maybe because of the shocks involved in ALS?