reh5108's 4 Banging SHITBOX tUrBo 4x4 Build

Awesome report Ryan, glad you got the fuel issue sorted and were still able to make the trip. Also I remember always being nervous about your's and @Wishbone Runner 's pups on the trail even though I knew they would get out of the way like in the one video. I tend to helicopter parent mine and just throw her in the truck if we are doing technical stuff. I should let her out on a small trail with a group and see how she does.

 

Thanks! My skills have come a long way since buying this truck. I've learned a lot and I'm sure I'll continue. I'm glad it's relatively simple and easy to work on. By no means am I great at welding but I can't think of any that have failed. It's the awkward position and hard to get to or see places that are the ugliest. With all the information out there on the internet there really isn't anything anyone can't learn if they are willing to put the time in.

 

I like being able to hear incase there is something going on. It's bad enough I can't see without finding my glasses first if there was an emergency of some sort.

The technical sections are when we are going slow so it gives them a chance to get out of a bouncing truck.

 

That is very true

 

Decided to pull my winch apart and give it a cleaning and regrease it. Things looked pretty cruddy inside and some rust was starting to form. Definitely a messy progect.



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The motor side of things looked pretty clean so I didn't bother disassembling further.

20190405_195938 by Ryan Heintzelman - Flickr2BBcode

Control box doesn't look the greatest but it still works...

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My mpg has increased with the turbo! Last two tanks were 20 and 21.

Ran Chinaman Gulch on Monday and the turbo helps keep the truck from stalling out as quickly. It actually hits boost right before stalling. Just before it stalls if I let the clutch slip a bit to bring the rpms back up and let the clutch grab again I have boost power!

My truck actually starts now when I use the clutch start cancel in finesse spots. Kind of annoying, I liked complete electric power!

My ARB started throwing fits and not sealing up again twice on this trail. About to give up on this crawling shit and become an Overland Bound member, by some maxitracs and fill my fridge with some LA Croix.


As for Chinaman, it gets more difficult every year. More and more rocks are becoming annoying axle grabbers for 33's. Can't believe 4 years ago I did it open open and no tcase skid.


We arrived well after dark so waking up in the morning to this awful view was a nice surprise. A heard of about 20 elk came through the field. They're in the pic, it might be time to upgrade to a real camera soon. Most of the heard had already crossed the fence line but there was a cow and calf that were hanging back. The calf had come to a seemingly impassable impass when it encountered the fence. The cow hopped the fence with ease and began slowly working her way back to the herd and the calf frantically started running down the fence line trying to figure it out. Later I learned there were coyotes not far from it. Eventually it came to the conclusion that it could slip in between the fence wires and reunite with its mother.


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My buddy who had walked away from camp was watching the coyotes that were somewhere behind the heard. He somehow had no clue the elk were there even though he captured them in his picture of the mountains.


My roommates 4r on 37s struggling here when my 33's and ifs made it up relatively easily, silly SAS! Everything else he made look easy though.

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He did get pretty close to making this obstacle. If his rear bumper wasn't so low I think he might have gotten it.

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Installed an EGT guage in place of the clock. I'm still not confident the stock ecu can safely handle 5 psi. Maybe if the turbo doesn't build boost until north of 4500 rpms. That seems to be the only time I see below 12 afr. Anyone know how hot is too hot for a gas engine?


20190417_210757 by Ryan Heintzelman - Flickr2BBcode

 

After some research 1600°F seems to be the max exhaust gas temperature in the manifold. My sensor is mounted just after the turbine which can apparently be 200°-300° less than in the manifold. I saw 1450° as a max, add 200° to that and it's well over 1600°.

I parked and shut the truck off and immediately put a temp gun on the manifold and it read 150° less than where the probe is after the turbo. Maybe the heat soaked back to the block by the time I hit it with the temp gun

Motor hasn't blown up yet. Trying to keep it below 1400°. In most conditions when the ecu kicks into open loop the egts drop pretty fast even with an afr of 13.1. In closed loop I can be in 3psi of boost and have egts in the 1300s with the ecu maintaining a constant 14.7:1 afr. Maybe I'm missing something but I feel like an EGT guage gives a better idea if you're within safe limits of the motor rather than an afr guage.

 

Sounds too hot to me.

 

I've been doing a lot of this

 

3RZ (and most 5VZ) FPR’s are different from what you typically think. They aren’t vacuum operated and are generally fixed at 45 psi so there is no change when you unhook it. Strange setup but

1450 sustained is pretty toasty. A spike to 1600 for a few seconds is far better than sustaining 1450+ over Loveland. If you’re smart with it, you won’t hurt anything.

The biggest thing to help EGT for your application would be a charge air cooler. Air directly out of a turbo is really really hot and will drive EGT’s up a bunch.

 

Thanks for the insight. The popular opinion on custom tacos is that the FPR is a rising rate 1:1 ratio. I haven't seen any data to back it up yet.

I'm finding anything below 4500rpm in open loop stays between 12.5-13.5 afr, after 4500rpm I see afrs I'm happy with in the 11s. I did a 3rd gear pull uphill this morning and was hitting 11.1 afr at 5000rpms. EGTs were holding around 1450.

Intercooler is up next after I get my airbox made to get the corrugated tube out of there.


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airbox3D001 by Ryan Heintzelman - Flickr2BBcode

 

Lots of misinformation out there on the FPR vacuum hose because its not a vacuum hose at all. It's just a vent to the intake before the throttle body. For whatever reason Toyota does not use manifold pressure to reference for fuel pressure on the 3RZ/5VZ. Gadget has posted about it in the past. I was bamboozled trying to figure out the FPR hose one day in the garage and went down a deep, dark, rabbit hole of research.

 

This week on Ryan Redneck Garage we build a smoke vacuum leak tester! Now go on inside and grab one of ma's favorite cookie tins. Drill two holes, one to push a hose into and the other for a male air coupling. Now grab that empty box of Busch Lite (Mountain Dew box works just as good, just not as enjoyable) and tear it up and start a fire in the bottom of the can.


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I used this fancy leak down tester as a regulator so I wasn't blasting 150psi of air into this thing.


20190427_121307 by Ryan Heintzelman - Flickr2BBcode

I found the source of my p0442 code I've been getting.

https://youtu.be/Grl3QY_KwDk



And incase you didn't know paint cans are made of plastic now.


20190427_112652 by Ryan Heintzelman - Flickr2BBcode

 

Brilliant! We’ve always used sagrit smoke but these days it costs too much to get enough smoke using them, price and lung tissue. What psi did you regulate it to?

 

I'm not sure, didn't look at the guage but I bet it was less than 5psi. An inline filter probably wouldn't be a bad idea either to keep from pushing ash into your hoses.

 

That’s freaking awesome.

 

Made some progress with the airbox today with the help of @Night Eagle.


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Tried to find some more rivnuts locally and nobody knows what they are

 

Put in a new radiator hose since the old one interfered with the intake coupler. I think it's out of a Pontiac Vibe. Gates part number 23528. It's not a perfect fit but close enough.

Problem

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Problem solved

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New airbox, still need to make a gasket to seal it. I think with the BOV return being so close to the MAF sensor it messes with it and the truck stalls when closing the throttle quickly. Only really an issue when coming up to a stop. Going to try a splitter bov that will vent to atmosphere and recirculate. Hopefully recirculating 25% will keep the truck from stalling. If not I'll live with it until I have a piggyback or standalone to tune it out.


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Not sure what this is on piston #4 but I'll keep an eye on it. The rest look pretty good. There is some light vertical scouring in every cylinder which I'm guessing is why my compression is on the low side.


2019-05-06_12-23-54 by Ryan Heintzelman - Flickr2BBcode

Drove the truck around BLM land near Kremmling. I definitely need to fix the stalling issue. It's fine on the street but when hauling ass off road and needed to brake hard and slow down it stalls almost every time.


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IMG_20190506_205100_349 by Ryan Heintzelman - Flickr2BBcode