Gq temp gauge/ Egt is this still safe?

Post by **michael a** » Sat Mar 10, 2007 3:50 pm

I have put in a aftermarket temp gauge and its reading 90c.

I have it on the heater fead hose is this accurate??

Also I have a pyro. I have a td42 with a turbo and lgp set up

With gas off i get 500 max

With gas on 575-600 max

Is 575 getting to high? I am running 12psi should i drop it a bit?

What will lower my egts??

Post by **GQ4.8coilcab** » Sat Mar 10, 2007 4:52 pm

You want to keep EGT's on a td42 below 500, 575 is quite high and get into melting piston territory, though i know of comp rigs with temps consistently running above 750

If your gas system is making it run that hot, maybe its doing more harm then good

Post by **badger** » Sun Mar 11, 2007 9:47 am

backing off the boost will not fix your problem. as it increases the amount of fuel in relation to air. increasing the boost will most likely fix the problem tho.......depending on efficiency of your turbo set up and if you wish to run more boost. or you could have the fuel backed off a bit

if it were me id put in a 2 stage boost controller n run low boost on straight diesel and higher boost on lpg/diesel. boost levels are up to you but get it tuned by a pro

Post by **udm** » Sun Mar 11, 2007 12:52 pm

where are u reading egt's from?

Post by **michael a** » Sun Mar 11, 2007 3:12 pm

Egt readings are after turbo.

Post by **udm** » Sun Mar 11, 2007 4:14 pm

michael a wrote:Egt readings are after turbo.

then yes, u are on the dangerous side of the scale... you will have to backoff the fuel a bit.

Post by **michael a** » Sun Mar 11, 2007 8:36 pm

ok.

I am a mechanic by trade but deisel is not my specialty. Who should I see about getting this done in sydney?

Post by **udm** » Sun Mar 11, 2007 9:11 pm

Have u thought about fitting a cooler? u might be able to bring egts down by about 50c / 100c with just fitting an intercooler.

Ulises

Post by **michael a** » Mon Mar 12, 2007 6:47 am

Yeah I would love to fit one but I would go water to air but $$$. No room for a air to air. no much crap under bonnet

Post by **Mario** » Mon Mar 12, 2007 11:53 am

I always thought for diesels the pre turbo threshold was 1250 F which is 677 C.

Please confirm...

Post by **udm** » Mon Mar 12, 2007 4:04 pm

michael a wrote:ok.

I am a mechanic by trade but deisel is not my specialty. Who should I see about getting this done in sydney?

Try Stephen at Penrith Diesel 4731-2745, seems to be a top bloke...

Post by **michael a** » Mon Mar 12, 2007 8:00 pm

ok thanks I will give him a call.

I droped the boost a bit seems to be a bit better as I have a compensater on the injector pump. More boost more fuel. I then clamped the line to it and that reduced the temp by heaps.

What is the max temp I should get to?

would 500 be ok?

Is it safe to hold it on 500?

Post by **udm** » Mon Mar 12, 2007 8:15 pm

yeh, 500c post turbo or 650c pre turbo would be good enough...

Post by **michael a** » Mon Mar 12, 2007 8:38 pm

is it ok to hold it on 500 for a long time say 1-2 hours?

Would it be causing damage?

Post by **udm** » Tue Mar 13, 2007 8:10 pm

michael a wrote:is it ok to hold it on 500 for a long time say 1-2 hours?

Would it be causing damage?

I dont know if it is doing damage, but if it was my engine, I reckon I wouldnt keep it up there...

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Gq temp gauge/ Egt is this still safe?

Gq temp gauge/ Egt is this still safe?

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