Exhaust Temperatures - Petrol vs Diesel
Submitted: Wednesday, Oct 14, 2009 at 11:42
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Pete Mac
Hi All,
First post so be kind :)
Goes without saying that diesel's run cooler than petrol vehicles - but does anyone have any actual recordings of the temperature difference betwen modern Petrol engines and modern Turbo-Diesel engines at the exhaust?
Cheers,
Pete
Reply By: Member - Graham H (QLD) - Wednesday, Oct 14, 2009 at 11:55
Wednesday, Oct 14, 2009 at 11:55
I cant tell you the difference but here is what
mine runs at.
Engine 4.2 TD 2005 119200k
Probe is 100mm below dump pipe.
Temps 300-325c at 90kph when towing a 2800kg van IN 4TH GEAR
400-425c if towing same van in OVERDRIVE
When not towing temp varies from 250-350c depending on the road.
Fuel consumption stays the same in either gear when towing but car goes best in 4th.
Something to start with
I doubt many petrol motors would need or run an EGT gauge.
AnswerID:
387000
Follow Up By: mazcan barry - Wednesday, Oct 14, 2009 at 12:36
Wednesday, Oct 14, 2009 at 12:36
hi graham
interesting facts but not surprised that 4th is best as a cooler temp puts less stress factors long term on a motor and at the right temp a motor will perr along we used to cover part off the radiator on our tractors in the winter to raise temp a little and they would pull better
egt - is that -exhaust gas
test- guage?
and is the probe strapped to the exhaust pipe or inserted or close by on a bracket??
where do you get them from?
and approx price if you dont mind thanking you in advance
cheers and notice after revisiting a previous thread that you where in bunno the other day would have tryed to catch you for a chat
but as they say hard to catch a fast kiwi
cheers barry
FollowupID:
654586
Follow Up By: Member - Graham H (QLD) - Wednesday, Oct 14, 2009 at 12:56
Wednesday, Oct 14, 2009 at 12:56
Exhaust Gas temperature Gauge
-
robe is inserted thrua hole in side of exhaust with a threaded nut holding it in place So is absolutely in the firing line of heat.
They are $350 roughly here but with the Aussie $ I would get one from where I got
mine Here
http://www.atlanticspeed.comMine is a white faced one but would get a black faced one again
Get a Metric one NOT a Farenheit.
Mine was $128 plus postage and is an Autometer Phantom (kit)
Will look tonite and post a
pic of
mine just on our way ouy
Im in Bussleton now till Monday while I get car serviced
FollowupID:
654591
Follow Up By: mazcan barry - Wednesday, Oct 14, 2009 at 20:27
Wednesday, Oct 14, 2009 at 20:27
hi graham h
thank you very much for the www.atlanticspeed.com website
it"s the best guage site i have seen and no problems with sending there products to australia autometer are a top brand as
well
you name it and they have it not many too chose from though - ROFL
but was almost finished my selection and their website inccurred an error and shut down so have to wait until it"s on again but thanks once again
cheers
FollowupID:
654640
Follow Up By: Member - Graham H (QLD) - Wednesday, Oct 14, 2009 at 20:55
Wednesday, Oct 14, 2009 at 20:55
No probs
pic of my one in my profile second page of pics.
Its a pa\hontom II and the number ends with an M denoting metric
like 4727M is metric 4727 is a farenheit one.
FollowupID:
654645
Follow Up By: Member - Graham H (QLD) - Wednesday, Oct 14, 2009 at 21:54
Wednesday, Oct 14, 2009 at 21:54
OK
Mine is a 5744M is a whole kit and on Atlanticspeed is $158 US
I just took inner guard cover off and drilled a hole in side of pipe before I had the new exhaust fitted.
They supply a stainless hoseclip type of clamp and its easy to fit.
Just dont cut the cable.
Cheers Graham 0405390366
Couldnt find u in
members list
FollowupID:
654657
Reply By: Member - Alan H (QLD) - Wednesday, Oct 14, 2009 at 13:25
Wednesday, Oct 14, 2009 at 13:25
I stand to be corrected but I believe the consensus is that LPG exhaust is hotest followed by Petrol with Diesel being the coolest.
Have to be careful for spinifex fires with any exhaust but non-diesels seem to have greater risk.
Alan
AnswerID:
387014
Reply By: Pete Mac - Wednesday, Oct 14, 2009 at 19:54
Wednesday, Oct 14, 2009 at 19:54
Thanks for the info guys! Appreciated - really just wondering how much more susceptible to spinifex fires petrol vehicles are...obviously they run hotter, I was wondering how much hotter?
Cheers,
Pete
AnswerID:
387080
Follow Up By: mazcan barry - Wednesday, Oct 14, 2009 at 20:15
Wednesday, Oct 14, 2009 at 20:15
hi peter
from my farming experiences in the past we were always highly conscious and on alert when using a petrol vehicle in our straw and dry grass paddocks during summer and the old dry spinifex is alway a tinderbox waiting to ignite lights quicker than paper try it some time with a magnifying glass
and would never leave one idling if hot many fires have been started by them
sorry but cant give you a temp figure comparison
FollowupID:
654639
Reply By: OREJAP - Wednesday, Oct 14, 2009 at 22:01
Wednesday, Oct 14, 2009 at 22:01
Yep, never used petrol vehiciles in the desert always diesel the catalytic converter on petrol vehicles I was told can get up to 1000 celcius. There was a family years ago who stopped at a location to take some photos across a valley in the
Vic High country they had driven through some long dry grass previous to stopping. Whilst taking the happy snaps they heard noises behind them & smelt plastic burning turning around they saw their V8 petrol Disco a raging inferno Part of the melted aluminium motor is still on the track today.
AnswerID:
387095