General Turbocharger Thread (formerly "Turbo Charging A Tundra!")

I’m nearing 12k miles with mine and zero issues with where my drain is. The drain is unpressurized. Routing it is a bit awkward to make sure it’s always running downhill but still pretty simple to do.

When you do drill the pan, go slow. My step bit chewed through at a way quicker rate than I expected and I got lucky and stopped at the right size. It takes very little effort to thread the fitting in. I put some fipg on the threads and outside of it just to make sure it didn’t leak.

 

Definitely will. Working on it this afternoon and tomorrow. Having to swap my ebay bs turbos out. Using some other cheap ones just slightly bigger. Having to add an intercooler as iat were stupid high on quick pools hit 186. Nope not doing that lol. Changing up the style of turbo connection. Rerouting drain lines and feed lines. Hopefully can figure out why I cant run a boost controller. Don't want anything higher than 8lbs. No controller I was getting 5.5 maxed with it and now without it I'm spiking into 15 lbs under wot. 7 to 8 at 85% throttle.

 

I'm curious if you can't make that oiling system self contained out back at the turbos with an oil cooler and single pump. That is such a long run for the factory oil pump to move oil, and I know it is probably low risk, but the idea of losing a feed or return line along that 15' run makes me cringe a little.

Edit: unless you are using a hard line for the runs? Then I'd only be concerned about the oil pump

 

Oh it pumps it for sure. Oil pressure stays good after roughly a year of having it back there. Busted a seal one day at idle in yard and lost probably 2 quarts in 5 minutes. Also run mobil 1 only at 5w30 because I'm in west central flordia instead of 5w20.

 

Which boost controller? I run the innovative scg-1 and haven’t had any issues controlling boost. How do you have yours plumbed?

 

I like the idea of a separate oil system for my setup too. But I can't find like a kit with all the stuff needed. It is more like a custom system. Considering my workload I will let that for another moment maybe and use the truck oil system as usual.

 

That sounds way overly complicated and too many failure points. There’s no need for all that.

 

For our installation and location, agreed.

 

Cheap one that came with the kits. Have 2 and both do it. Have tried it setup with each turbo and waste gate ran seperately and one turbo running both wastegates as well as one turbo with a t fitting to both w.g.. the last seems to allow me a steadier 7 to 8lbs but at wot goes to 15. While just turbos plumbed directly to w.g.only allow 5lbs maxed wot

 

Yeah maybe if it wasn't being used as my daily work truck or the short plan of just a 10lb street toy. If this motor fails and money is right at that time I'll venture into it possibly but also dont want all the added cludder back there either. Will post pics once everything is back together tomorrow of where its at now. Still going to be far from the finish but its a trial an error setup right now.

 

What springs are in the wastegates?

 

After almost 2 hrs. looking for a good spot for the MAF sensor:

1 from engine bay
2 to AEM W/M controller
3 to MAF sensor

 

I put mine in the glovebox next to the water meth controller.

 

What thread sealant is good for solenoid fittings?

 

Pipe tape. They are npt and shouldn’t need any but better safe than sorry.

 

Believe 7lbs will double check to be positive.

 

Any issue with your water methanol system? Also how long is yours lasting before refill needed?

 

No issues. Really depends on how much I’m in boost as to how long it lasts.

 

I was looking into it briefly. May still go that route later. What system are you using? Ive found several different one cheap and not.

 

AEM. Simple setup. It makes a difference on the iat’s and AFR’s some as it is a fuel and helps cool things off. I use it more as a safety net than anything.

 

Highly encourage anyone running water/methanol use the "recommended" solenoid in the instructions. It's a great safety net, until it isnt. Can't scream this warning loud enough.

 

Also, @Emd513 - if your springs are good, the Google box really only points to a few issues for your boost spikes.

Essentially, the list is:

Vacuum leak
Inefficient or improperly configured boost controller
Insufficient waste gate sizing

If you look through some of the somewhat recent pages of this thread, Jesse posted a video about to properly plumb the EBC, so it.mught be worth confirming that as well (doubtful it's your issue, but still worth ruling it out and double checking things).

That's a big bump in boost for the last little bit of throttle. Could just be big turbo lag, so maybe the fastest option is to dial the WG duty cycle down and see if that helps.

 

IMO is a must! Due to the level of the tank compared to the intake.

 

Thats what I would need it for. Not so sure I'm liking my intercooler area. Pics to come. After back and forth with Toby the last few weeks on tunning my iats are stupid. Freeway running there similar to an aftermarket intake on the trucks. Idle there way lower that stock but any throttle 50% up I'm into the 150s and up. Short runs of wot im nonlower than 160 and seen upwards of 186. Thats just 3rd gear pulls. Doing gt35 turbos right now and an ebay intercooler will see this week. If it doesn't get better my next stop is meth/water injection.

 

Those temps.remind me of the Stage 1 kit without intercooler but that required W/M. Just make sure your injection point is after the MAF, otherwise you'll be replacing it. If your TB and MAF are in the stock location, that leaves only the plastic intake manifold (specifically the elbow part) to mount, and I'm not sure how it will hold up when drilling and tapping for the nozzle. Curious to see how it continues to progress.

That spike to 15psi at WOT is more concerning than the IATs, though. I say this because those IATs are after compression and are accurate temps.

 

Man I'm starting to think the w.g. (ebay) are not operating correctly. They both came in a turbo kit i bought with the turbos. Turbos are getting replaced but was keeping the w.g. for now. Have the adjustment screw ran all the way in. Originally that setup. (Vac from turbo to w.g.) would rate me at .4 bar wot through 2nd and 3rd with 2nd gear struggling to hit the .3 to .35 bar and as soon as it shifted it would jump forward and gauge would jump to .4 maybe .45.

Boost controller on. Screwed all the way out Originally. Same figures. All the way in she tried hitting 1.4 bar before I could let off and realized it. Adjustment in every spot with b.c. and it would work at one time then go back. Swapped controller. Same thing. Got it to where previously stated. If I hold 80% throttle .4 to .5 bar in 2nd shift gears jumps to .7 bar and will hold but as soon as I push the throttle down 1 to 1.1 bar. Now wot in 2nd its a hit and miss. One time .4 to .5 bar some times .6 bar but then there's moments it randomly chooses 1 bar. On the earlier as soon as the truck shifts to 3rd when at .6 bar you can forget it. It will throw the boost to 1 plus. Have to let off some and ease back into. Can't go that high right now. Flatens out injectors peg 120% use eq jumps to 1.25 not real bad but does incur some knock of -5. Ive been trying my best to keep that figure low as possible where -3 isnt shown. Truck has 283k miles.
Ill read early on discussion after church today and check some things to make sure setup is not an issue. Also dont want to change too much and not know what was the fix. Already changing turbos adding intercooler and correcting return line location so engine actually has a vent.

 

My current setup under the hood. Still trying to find a maf pipe that will work. Looking for a 5" and cant seem to locate one. May end up having to make one. So currently its just the factory tube cut off the factory box and pipe.

 

Of course my whole setup is crazy too. Tell most people that ask it was hold my beer moment since bed had rusted and didn't want to put under hood for added clutter and trucks going lower so clearance under was an issue.

 

Your components are there, I think you just need to continue your path of triaging. The intercooler obviously needs more air flow, but slap a fan or two on it and location may not matter, unless! It is hearing up during the 16' of run to the front. Pavement is hot, you're running metal.piping within a few feet of it, that could be negating all of your gains.

You can get known good results with the water/meth, but that WG issue needs to be looked at first. Not having consistency and control over your power adder isn't going to help this motor or any future motor. You already know all of this, though. You've come this far.

Cool setup, just need to start finessing it a little. How quick does it spool up? If it's pretty fast, then you know the boost controller is doing something. It allows for a slightly SC-esque boost curve vs the long, gradual curve of just running the manual springs. A Dragy can help you see it, too via the G-force

 

This is the new setup. Was running no intercooler. Just installed it and these turbos yesterday. Still have some buttoning up to do before running it. Hopefully be done later today (waiting onna couple parts). Starts building boost roughly 26 to 2800 rpms. With 3200 being noticeable but those were smaller turbos. Will see what these build at. Intercooler i am actually going to put a air deflector on it to help force air through it as well as protecting it from debris from the back side. Will post pics once its all done.