What did you do on your 70 series today? (38 Viewers)

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Pressing out the old ones.
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What is a Turbo timer for. Should I Have one.

Just let your truck idle for a bit before shutting it off. If you've driven slow and light you can shut it right off. If you've just gone up a hill give it 30 sec. If you've just pulled a long steep highway run in summer, give it a couple minutes.
 
Just let your truck idle for a bit before shutting it off. If you've driven slow and light you can shut it right off. If you've just gone up a hill give it 30 sec. If you've just pulled a long steep highway run in summer, give it a couple minutes.
Oh ok. I guess that could be handy if you were the impatient type. I think that might be a tuner option for my Ram. It turns the truck off after the cool down cycle.
 
What is a Turbo timer for. Should I Have one.
Just let your truck idle for a bit before shutting it off. If you've driven slow and light you can shut it right off. If you've just gone up a hill give it 30 sec. If you've just pulled a long steep highway run in summer, give it a couple minutes.


If you have an EGT gauge I think you wanna shoot for less than 400 degrees before shutting down. Idk might depend on engines specifically. I find that at a warm idle my EGTS are ~350 so I think thats a good shutdown temp as well.

But yeah the idea is to keep circulating all the hot oil for a minute or two before you shut down, which effectively keeps that oil in place during cool down. Oil carbonizes when it's super hot so you want to try and disperse that as much as possible to prevent fouling any specific areas, specifically those tiny vulnerable ports like the turbo inlet/outlets. I'm not sure how relevant seasoning a cast iron skillet would be as an analogy, but same idea.

For example I live at the top of a pretty big hill at 7000' altitude. In 2nd or 3rd gear coming home I usually end up at 600-700 degrees fahrenheit. Idling for a couple minutes drops the temp down to 350-400*. Easy peasy peace of mind. Except my wife always ditches me to go inside.
 
Also I am making hitch receiver. View attachment 2437849

If you're just towing smallish trailers why don't you just bolt a ball pintle hitch on and skip the receiver hitch? I use one on my 80 and I have towed fully loaded (with furniture, etc.) 6x12 U-Haul tandem axle trailers many times without issue.
 
If you're just towing smallish trailers why don't you just bolt a ball pintle hitch on and skip the receiver hitch? I use one on my 80 and I have towed fully loaded (with furniture, etc.) 6x12 U-Haul tandem axle trailers many times without issue.
Sure. Sounds like the way to go. Up and out of the way. Where do I get one.
 
Finished my DIY snorkel/cool air intake. Did it with 2.25" flex as I had a few 6'pieces in the garage. Inlet to turbo is 2.25. air cleaner out is 2.75. I don't feel any difference in power if I undo the lid on the air cleaner. So it's big enough for the 3b-t.

The Gap in the hood on the back gives me room with 1/2" to spare for my intercooler..... Haven't finished the install yet. I lose about 1.5 lb of boost due to air restriction with the 4" intercooler. I can increase fuel to get it back which will be good for power but it's going to hurt efficiency. I'll post results when I finish the install.

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Finally mounted my luggage rack on the left swingout arm.
The homemade illuminated license tag holder is ungodly bright with its cheap strip LED's.
You can't really see that in the photo due to camera flash.
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Finished my experimental air to water intercooler install on the bj73. It's very unorthodox as the heat exchanger is mounted on the front of the roof rack. This was done as a experiment to see if I can lower EGTs enough to cruise 65 to 70 on the highway in rolling hills with the 3B turbo.

With a spacer between the hood hinges and the hood I can get enough of a gap to clear a 4-in barrel style air to water intercooler. It takes about 1-in of Spacer to clear this.

the heat exchanger is a radiator for a Geo metro that I just had on hand and decided to use for the experiment. It is way bigger than necessary. I used 1/2-in copper up the side of the snorkel cuz it's less obtrusive than the big rubber lines.

The intercooler at four inches and round is too small. I lose 1.5 to 2 lb of boost with the intercooler. A 5-in square would be better and I could still clear it with the hood Gap.

My EGT gauge alarm is set at 720 degrees C. Added 3/4 turn on fuel screw from what is safe without intercooler. It it's easier to get over 600 accelerating, but the intercooler makes it harder to get over 700.

Also install some DIY limb risers.

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With that data, will you now try again with a square heat exchanger?
 

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