ive read this ??
Oliver Whiting
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Oliver
84 110, 94 NAS90,Bunch of EX-mods
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I have a
300tdi and spoke with the tech guys at Garrett about this same issue. I was told that 1330f was max for the turbo by Garrett so just to play it safe I run around 1150f max at my elevation but keep in mind as you climb in elevation the fueling ratio stays the same so they will run hotter with more fuel, less air.
I live at 8000ft and routinely drive to 12000ft so that may not be an issue for you.
Measured pre turbo. if you measure it post
turbo you are just guessing.
Quote:
Originally Posted by
navydevildoc
OK, call me crazy but I thought the EGR plate sits right on the
exhaust manifold just before it hits the
turbo? Are we talking about 2 different places?
Does anyone disagree with a 1200 degrees pre-turbo maximum?
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5
Red90
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John B.
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1300 is fine as a max as long as you have a
gauge pre turbo.
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navydevildoc
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Neill Thornton
1984 D90
300 Tdi / 1965 Series IIA
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Right, and the EGR plate sits just before the turbo, yes?
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TS888
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Tony Sims
1984 110
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Quote:
Originally Posted by
navydevildoc
OK, call me crazy but I thought the
EGR plate sits right on the
exhaust manifold just before it hits the
turbo? Are we talking about 2 different places?
Does anyone disagree with a 1200 degrees pre-turbo maximum?
EGR plate is before the turbo on a 300TDi.
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[
appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
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Originally Posted by
chris snell
This is straight out of the
Manual for Build Builders.
Tony
1984 110
"Smokey" (sold)
#8
navydevildoc
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Neill Thornton
1984 D90 300 Tdi / 1965 Series IIA
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Thanks Tony, just wanted a second opinion on it before I made a blonde hair mistake and blow something up.
#9
Viton
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Tony is right the plate is pre-turbo on the 300tdi, sorry, I was thinking of the one on my '85 524td, it's after. The EGT sensor probe tip should sit mid way in the exhaust stream, so I bougt one that is 2" long to get it there.
#10
navydevildoc
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Neill Thornton
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No worries Dennis, just wanted to make sure I was thinking of the right place!
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Tony Sims
1984 110
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Don't worry about it Dennis, I finally had to go look because I started second guessing!
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Quote:
[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
Quote:
Originally Posted by chris snell
This is straight out of the Manual for Build Builders.
Tony
1984 110 "Smokey" (sold)
#12
Uncle Douglas
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Doug Crowther
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Quote:
Originally Posted by navydevildoc
OK, call me crazy but I thought the EGR plate sits right on the exhaust manifold just before it hits the turbo? Are we talking about 2 different places?
Does anyone disagree with a 1200 degrees pre-turbo maximum?
It is.
I think what you want to do is try and adjust the pump such that you get the performance you want with the min amount of smoke. You then want to watch the egts as you push it up one of those long grades you refer to. I usually downshift @ 1250. The temp drops immediately when you do.
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#13
Viton
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Under throttle, low pressure, on the boost guage, equates to high EGT's and high pressure (good air flow to take away high temp's) equates to greatly reduced EGT's.
#14
Oliver Whiting
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Oliver
84 110, 94 NAS90,Bunch of EX-mods
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max egt
Just remember that Aluminum melts at 1220 f. The cylinder head on a 300tdi is Aluminum. Yes it has cooling water jackets that help but the turbocompressor housing is also aluminum with no water cooling. I am sure there is a way to calculate the amount of heat soak to the aluminum compressorhousing to figure out how high you can push it. Cylinder heads are expensive if you warp or crack one on a 300 tdi so play it safe by a couple hundred degrees. Ask me how I know.
------ Follow up post added May 9th, 2011 06:33 PM ------
Check out this link for tuning if you have not already seen it.
http://www.landroverweb.com/Pdf-file...ines_Rev_2.pdf
#15
defeyago
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Santiago
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1328 constant pre-turbo. I try to keep mine below 1000 max. It normally cruises at 65mph between 550 and 700 hundred depends on the load/terrain. I´ve touched 1100 for short periods of time though. Anyways I have the 2.8HS TGV turbo on my 300Tdi.
Regards,
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#16
navydevildoc
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Neill Thornton
1984 D90 300 Tdi / 1965 Series IIA
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Quote:
Originally Posted by defeyago
1328 constant pre-turbo. I try to keep mine below 1000 max. It normally cruises at 65mph between 550 and 700 hundred depends on the load/terrain. I´ve touched 1100 for short periods of time though. Anyways I have the 2.8HS TGV turbo on my 300Tdi.
Regards,
This was going to be my next question, I thought maybe my EGT sensor was no good as I wasn't ever over 750, usually hovering about 500.
Looks like I have some wiggle room....
#17
Manimal
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Carl Jonsson
1995 NAS D90 #219
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I'm planning on ordering an EGT kit (gauge & sender) from eGauges and install the sender on the EGR blanking plate. To confirm: the EGR blanking plate is pre-turbo, right? So this location should give an accurate reading?
Second question. Has anyone ordered the kit from eGauges before? Do you know if the sender is long enough to fit in this location for a proper read? The site doesn't say how long the included sensor is.
#18
navydevildoc
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Neill Thornton
1984 D90 300 Tdi / 1965 Series IIA
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Yup, the EGR plate on a 300Tdi is pre-turbo.
I also ordered the VDO kit from eGauges. It will come with a bushing that the probe bolts to. I had Josh (crash303) TIG weld it on to my EGR plate at an angle so that it was sitting in the exhaust stream.
I can take pics in a day or two when I finally get home.
#19
Manimal
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Carl Jonsson
1995 NAS D90 #219
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Thanks Neill. No rush at all as it'll be a couple weeks before I get to it. Just wanted to make sure the included probe/sender is long enough. Sorry to hear about all the trouble on your trip.
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#20
Overlander
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mark kellgren
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Quote:
Originally Posted by defeyago
1328 constant pre-turbo. I try to keep mine below 1000 max. It normally cruises at 65mph between 550 and 700 hundred depends on the load/terrain. I´ve touched 1100 for short periods of time though. Anyways I have the 2.8HS TGV turbo on my 300Tdi.
Regards,
X2. I've touched 1100 maybe once. around a thousand and I'm laying off a bit on the throttle. I just replaced a cracked head and don't want to do that again. I don't know what caused my cracked head, but it must have happened before I installed my EGT gauge. Now I'm smarter.
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