EGT Temps

[SMPMASTERMIND]

Wondering what would be considered too hot for EGT. I have my probe Pre Turbo in Manifold. For the most part it registers below 600F but obviously spikes with load. Running up to 24 PSI. Usually Flat Ground pulls stay at 800 to 1000F. Uphill though it sits as high as 1300F on a steep climb at 70 Mph and 15 PSI. Other Climbs around 1100F..
Signature states Car mods. Still running stock SMIC.

What is considered to hot and doing damage?

What can I do to lower this temp?

 

[jmodge]

Sounds decent if it’s accurate

 

[Nero Morg]

Water meth injection is a good way to lower egt's, larger exhaust (2.5in at least turbo back) better flowing intake (Pd150 or BRM intake) upgraded SMIC, no need for fmic, is a start for supporting mods.

 

[SMPMASTERMIND]

Sounds decent if it’s accurate

New South Gauges installed with their installation kit. Short Probe. Seems to read changes fairly quickly and not bounce around or anything. So 1300F isn't bad for motor?

 

[Nero Morg]

Keep it under 1600F between the engine and turbo and you'll be fine.

Not sure what a stock ALH TDI will generate for max EGT's, but it'll be under 1600F

Normal driving around should see 400-800F with 1000F or so on hills or accelerating.

Found here:

EGT values?

I believe monitoring the EGT would be a good way to protect an engine from breaking if I were to mod it. I want to start with the evry mod and want to know what EGT values are considered normal/stock and what are considered too high/dangerous? Thanks

forums.tdiclub.com

Odd that Temps can be so hot, being as aluminum starts melting at 1221°f

 

[SMPMASTERMIND]

Water meth injection is a good way to lower egt's, larger exhaust (2.5in at least turbo back) better flowing intake (Pd150 or BRM intake) upgraded SMIC, no need for fmic, is a start for supporting mods.

Have you tried Water Meth Injection? Does it work well with VW's? Does anyone sell a kit? I would think maybe a little over kill for my set up.
I do have 2.5 inch Straight back from Turbo but haven't upgraded SMIC. Does the 1.8T Pancake Pipe upgrade help at all?

 

[SMPMASTERMIND]

Found here:

EGT values?

I believe monitoring the EGT would be a good way to protect an engine from breaking if I were to mod it. I want to start with the evry mod and want to know what EGT values are considered normal/stock and what are considered too high/dangerous? Thanks

forums.tdiclub.com

Odd that Temps can be so hot, being as aluminum starts melting at 1221°f

Thanks for the thread... I tried searching... didn't find.

 

[Nero Morg]

All good, searching the forums can be tricky at times. I find using Google is the best to search here.

I personally have never used water meth, but I have seen some guys on the forums here run some crazy numbers with it. It probably is over cool, but it's a sure fire way to cool down your EGT's. I don't know if anyone sells a kit. Could try ECS.

I've read mixed reviews about the 1.8t pancake pipe, the general consensus is that it's a worthy upgrade, but upgrading the upper charge air pipe is not worth it. You definitely can't go wrong with an upgraded smic.
https://www.idparts.com/upgraded-side-mount-intercooler-smic-alh-p-2442.html

You could try eBay, I had originally purchased mine from tunemyeuro.com, but I guess it's been discontinued since then. Shame, lots of MKIV parts are becoming harder to get.

 

[burpod]

1300F seems rather high for stock BEW injectors with a vnt17 and straight exhaust.. maybe injection durations a bit long and/or timing not advanced enough with the tune... IMO there should be no need for water/meth complexity with the essentially stock hardware you have.. pd150 injectors with a retune would be better to get the same (and more) power with less EGT and better efficiency

 

[Fix_Until_Broke]

Just chiming in since I was quoted above...

I wouldn't change a thing due to EGT's based on the info in the original post. Not that any of the suggestions that have been made are bad, however if you lower the EGT's by any amount (100F, 200F?), it isn't going to change anything. You won't make any more power, your engine/turbo won't live any longer, etc

Aluminum melts at 1200F, however the pistons and cylinder head are only exposed to those temperature for ~15% of the time, the rest of the time in the combustion process they're cooled by the engine cooling system. Just like running your hand over a 3600F flame doesn't burn you instantly - same idea here.

 

[Mongler98]

Just chiming in since I was quoted above...

I wouldn't change a thing due to EGT's based on the info in the original post. Not that any of the suggestions that have been made are bad, however if you lower the EGT's by any amount (100F, 200F?), it isn't going to change anything. You won't make any more power, your engine/turbo won't live any longer, etc

Aluminum melts at 1200F, however the pistons and cylinder head are only exposed to those temperature for ~15% of the time, the rest of the time in the combustion process they're cooled by the engine cooling system. Just like running your hand over a 3600F flame doesn't burn you instantly - same idea here.

Just chiming on also. EGTs are Not the temps that the piston sees. It's the temp that the valves and more so the turbo sees (kinda). There is still some combustion happening as the exhaust leaves and when its wot there is still a little bit happening in the turbo as well. This is why ots all about the temp handling ability of the exhaust turbine materials.
Our pistons are covered in soot ash. A very very good insulator, Oil coold from underneath.... and seeing plenty of "cool" air after.
There is nothing to cool the turbo other than backing off.
Usually sustained is right at or slightly under 1500. With short bursts in the 1600 range if your brave!
Anytjing under 1400 might as well be 900 as it makes no difference at all to the engine.

 

[Nero Morg]

Also keep in mind, these numbers are unique to these engines. I would never dream of going above 1100°f on my old school idi, I'd start melting them pistons out!