Cool Down for Turbo

[jlwelding]

I just got my gauges and when coming off hwy empty ready to park it, I idle for five min. and it will only cool down to 375 is this normal?

[Rogan]

Ambient air temp has a lot to do with it, as well as heat-soak in the cast iron/steel pieces.Something to consider:Most highway trips are followed by slow, easy-driving trips to the house, etc.. This 'should' serve well as time to help cool the turbo down, aiding in the decreased need for 'turbo timer'..But if your ambient temps are in the mid 80s +, then I think mid-high 300s is fine.

[98whitelightnin]

That doesnt seem right unless you have the a/c on. Mine will cool down to 300 in less than a minute and in five minutes it will be around 250 or so if the a/c is off.

[dorkweed]

That doesnt seem right unless you have the a/c on. Mine will cool down to 300 in less than a minute and in five minutes it will be around 250 or so if the a/c is off.

:iagree:

[Rogan]

I guess I never sat and let mine idle for 5 minutes...

[Gerry R]

Rogan is right about ambiant temp. My 2001 and now my 2004.5 take longer in summer to cool down. I will let mine run until down to 350* especially when it has been working hard with high egts. A friend of mine with a first generation found out the hard way what happens when you don't: $1200 turbo.

[jlwelding]

I pull off the hwy and it's about 1/4 mile to the drive, in my 01 I just slip it in neutral and coast to the drive and it's down to 250 no problem. The 05, I shut the a/c off when I exit the hwy and it will come down to 375 and just hang there until it just idles for a good five min. after 5 min it will get below 300. And yes when it's not at running temp it will cool down faster, we are seeing 100 days. Thanks for the input

[AH64ID]

I never shut my stock turbo down above 300°, and 250° was preferred. It would take no time at all to get below 300°, 5 minutes of idling, even in the summer, would get me to 225-275°.Now with my water cooled turbo I can shut it down a bit warmer, but still prefer 300°. The exhaust manifold blankets make it much harder to get to 225-250°, and I run a little more retarded timing than I used to at idle, which adds to EGT's. But 375° after 5 minutes (assume pre-turbo) seems high.

[jlwelding]

I will time it a little closer tomorrow, I have to go to Austin about 2pm and it should be about 100 plus degree about then.

[jlwelding]

Here it is, it's 101 degrees at 5:00pm and I have been driving all hwy miles with very few red lights. At 68 mph it's 715-725 pull a slight hill and it's 800 easy. At 60 I have 700 and 5psi boost. I get home and idle down the road a little less than 1/4 mile and it's 425, set in drive with out A/C and idle for 5 min. 300 is as low as she will go. Maybe if I idle a little longer it may come down more I have Auto Meter gauges, are they cheep gauges and possible off a little. Pyro prob is in the back half of manifold at #4.

[98whitelightnin]

I think its because your running the a/c. I know its hot out but turn the a/c off and get out for a minute or two and then check it.

[jlwelding]

Turning the a/c off will let it come down a little more a little faster. This morning it was 76, I started it up and idle for 2 min or so and it comes up to 250 with cold eng. 300 is as low as it will go in 5 min. I am going to let it ilde longer and just see how long it takes and if it will get below 300.

[white01]

manual tranny trucks cool down faster than the auto trucks...turn your a.c. off...get out of your truck..go in side get you a drink or do something in your shop..and after four or five minutes it should go down..parking in the shade will help also..that is what is nice with edge juice with attitude they have turbo timers that can be set for egts or time amount.

[jlwelding]

I have a lot more dislikes about this auto than likes that's for sure.

[dorkweed]

Here it is, it's 101 degrees at 5:00pm and I have been driving all hwy miles with very few red lights. At 68 mph it's 715-725 pull a slight hill and it's 800 easy. At 60 I have 700 and 5psi boost. I get home and idle down the road a little less than 1/4 mile and it's 425, set in drive with out A/C and idle for 5 min. 300 is as low as she will go. Maybe if I idle a little longer it may come down more I have Auto Meter gauges, are they cheep gauges and possible off a little. Pyro prob is in the back half of manifold at #4.

It's not your Autometers. I run their UltraLights and when I still had my Edge Juice w/Attitude hooked up, they were spot on with the Attitude monitor!!! That said; my truck is mildly BOMBed, and runs really cool. At 68mph or 2000rpm on my truck, over level ground w/no wind empty, Mighty Whitey is at 475-600* and 2-5psi boost depending on outside temps (-20 to 100*) and whether I'm running the AC. However; because it's BOMBed, it'll also get hot quick if she's lugged down. Going to NoDak on my annual trip there, with the truck loaded to the hilt and towing a trailer she'll be seeing 6-9psi boost and 650-850*.

[sbf000]

where is the best place to get a turbo timer, how hard are they to install and what is the best one to get, just bought a 2006 3500 megacab 5.9l and love it so far but i am told that i should let the turbo cool down or get a timer? yes or no?

[AH64ID]

I get a pyro and call it good. I have never been able to fully justify the cost of a timer.

[white01]

http://www.edgeproducts.com/product.php?pk=139&pvk=388 turbo timers are worth it to me..my opinion tho...if you pull a trailer you need to always let the turbo cool down.i have seen alot of folks haul cattle..hay..logs..etc etc..pull into truck stop and shut down the engine.it is hard on all kind of engine parts.the oil in our engine is hot.so with a turbo timer a person can set it to shut off at a certain egt or certain time.if the engine is shutdown after it is put into park that hot engine oil in turbo will(i have seen lots) bake onto the bearing/bushing and coke up.when that happens with all of this build up the turbo will seize up.alot of people ask me what i have done to my truck to make it shut off by itself..some people think they are a waste of money..each to there other..so if your pulling a trailer and you pull into the fuel stop and want to leave it running because chances are it is gunna be a quick pit stop..dont shut it off..raise the timed alarm up to ten minutes go do your fuel..snack or whatever and when you get done in the store your truck will have had a good cool down and you seen look at the monitor and see what the temps are before you take off...because when you shut the truck off and the turbo timer is set when you pull the keys out and they are in your hand you can walk away while it is idleing down ..lock the doors..(and if you are thinking what if someone trys to drive away soon as the brakes are hit the engine dies) and when it hits 250 degrees are whatever you set it at needs to below 300 degrees or 2 to 5 minutes you can go due whatever..instead of waiting inside of cab watching the pyro...just my 2 cents...some folks like them some folks dont.

[Rogan]

where is the best place to get a turbo timer, how hard are they to install and what is the best one to get, just bought a 2006 3500 megacab 5.9l and love it so far but i am told that i should let the turbo cool down or get a timer? yes or no?

You can pick up 'just a turbo timer' (if that's all you're after) for under $100 from many places. They aren't diesel-specific, so getting one for a car is fine. All it is doing is supplying voltage to the IGN and ACC circuits to simulate the key is still on, for a pre-determined amount of time. TurboXS, Blitz, GReddy, etc..

Installation is cake, as well. Your basic connections of an aftermarket turbo timer are:

The wires coming out form the keyswitch usually consist of:

12 v - 12 volt constant power

IGN- Ignition power

ACC- Accessory power

ST- Starter signal

Other than these four wires, the vehicle may have two (or more) IGN wires.

Wiring Procedure:

(1)_Cut the Power harness close to the 3-pin connector

(2)_Use a volt meter or test light to find the appropriate wires. Connect the Red wire to the 12v, the Green to to IGN, and the Blue to ACC.

(3)_ Connect GND wire to solid ground surface.

(4)_ Connect Purple wire to VSS signal

(5)_Connect Brown wire to parking brake switch that shows 0 or GND when it’s set.

(6)_Solder your connections (or use Scotch-locks if you are comfy with their endurance.)

(7)_Cover all connections carefully with electrical tape or equivalent.

With vehicles that have 2 ignition (IGN) wires, connect the Green wire to the ignition (ON) wire which does not drop voltage when the starter is activated. Then connect the Blue wire to the other ignition wire.

I get a pyro and call it good. I have never been able to fully justify the cost of a timer.

I'm with you, John. Even with having built extremely high-HP gas turbo cars in the past, I rarely, if ever, used a TT.

I never used the one on the Edge in my '01.

[white01]

i was reading into the future..i agree with what is written above...but if you wanted to monitor other things..fuel temp..engine load...etc etc ...i know you didnt ask for that...i veered off of your question.