What things to monitor (what gauges to get?)

[grinder]

i suppose if the gauge shoots up to some REALLY Hot temp - that would be an indication of running lean ??

i would prefer a wideband over the EGT - i think it tells you a lot more

[Grizzly]

i suppose if the gauge shoots up to some REALLY Hot temp - that would be an indication of running lean ??

Being on the exhaust side of the engine if you used it to tell you if you had a problem i.e. went very lean for any reason the damage will have already been done. Also the problem is what is really hot? as every car is diffrent how do you tell if a normal temp for a Track/Spirited drive is wrong or right? I think i\'d rather have a Fuel rail Pressure gauge than a EGT.

I do agree though Wide band is the Way..

[lockwood77]

Changing tack slightly from the EGT/wideband discussion, I\'m looking at oil pressure gauges and noticing they tend to only go up to 100psi. What pressure do rotaries normally see?

I ask as my DC5 oil pressure gauge (showing 100psi max) is pretty useless, as anything approaching VTEC sees it hit over 100psi! :rolleyes:

[Grizzly]

In what respect? On idle or WOT? I know most rotarys are limited to about 100psi anyway unless its a Racer.

[lockwood77]

WOT, although having said that about the DC5, I guess it\'s low pressure you\'re looking for rather than high, so going off the scale isn\'t a big deal (would be nice to know the actual reading though!)

[Grizzly]

I just noticed my Defi gauges are in Bar so 10 bar or roughly 150psi.

[lockwood77]

Ah, Defi - if only I could justify spending that amount on gauges, I would!

[RedRummy]

I think i\'d rather have a Fuel rail Pressure gauge than a EGT.

I\'ve got an aftermarket HKS fuel pressure gaue on my FD.... I\'ve no idea what are good values... or what to look for... any ideas?  
:confused:

[peterwolds]

well i only have Water temp, Oil Temp, Oil Pressure and Boost.


Now if i was doing it all again i\'d put the PFC comander in a place i could see it properly and leave it on the Temp screen. I have never seen the point of a EGT meter? maybe once when you are building the car to see if you have the correct Exhaust/Turbine housing but i\'d rather save the money and buy a Wideband/Datalogger

always have my commander on water/intake temps showing its dash mounted but not the best lit screen in the world - or my eyesights getting worse with age

[Prof]

Well when i bought my To4R kit i had to weld up a EGT hole in the Exhaust manifold, but i read that you can put a egt on each side of the turbo to test if the Turbo is causing a restriction. But i personaly don\'t understand why you need to know what temp the exhaust gases are? maybe if there was a Scale of what they should be but every car is diffrent or should i say there are too many things to change the results I.e. a bigger turbo will drop the EGT in the manifold or a smaller Turbo will raise the Manifold temp and drop the Downpipe temp but these figures are fairly useless unless you have something to gauge it against or have two gauges fitted??

EGT is a good indicator of combustion chamber temps - if these are too hot, then you could well be looking at Detonation or pre ignition problems, which is why people like to monitor it.  If you put it on the engine side of the turbo - you will see pretty much what temps the combustion gases are as they leave the engine.

[thetera]

Definitely go for fuel pressure - if you\'re pump is dying hopefully you\'ll notice before its too late!

[lockwood77]

Went for water temp along with the two oils, which was a bad bad idea as I have silicone hoses and it seems the adpater won\'t form a water-tight seal, despite being the correct diameter.

I\'m gonna use silicon adhesive to seal it in, once I get time to take the hose(s) off and dry them out properly. I don\'t even need the damn thing! :rolleyes: