Originally Posted by
hobbs After spending the last hour and a half reading through Ben's build threadOh God. That thread is not meant to be a "How To". Holy crap. There's decent info in there but there are
many missing details when it comes to turbocharging one of these engines.
Originally Posted by
hobbs I'm feeling a bit discouraged and kinda like I'm getting in a bit over my head.Don't get discouraged. It's not that hard. You seem quite competent and you're asking the right questions so you should be just fine. Just keep asking the questions. I'll try to answer some. My apologies if skcusloa already answered some of them already.
Originally Posted by
hobbs 1. Lowport DE - You have three ports on the intake tract, one goes to the crankcase vent, other goes to EGR vac and the other one goes down and sticks to the firewall. What is this and where does it go? Can it see boost or is that a big no-no?I assume you're talking about the three ports on the rubber section before the throttle body. You are correct about the crankcase vent and the EGR tube (the EGR is the tiny one) but the other big one is for the idle control valve. It can see boost, yes. That is fine, and that's what I did with mine. It could actually end up being a boost leak if it doesn't see boost I think. (The pressure could possibly leave the intake plenum through the idle control valve and out the idle intake tube if it doesn't see boost.)
Just to be clear, the crankcase vent tube can't see boost, and I actually don't know about the EGR one I just removed it all together.
Originally Posted by
hobbs 2. PCV Valve - From what I have read it cannot see boost, therefor I have to plug the side that goes into the intake mani and vent the VC side?You're correct in that the valve cover shouldn't see boost through the PCV valve line but you don't have to worry about that because the PCV valve is one-way only and it won't let boost into the valve cover so you are safe there. Just leave it hooked up to the intake plenum like it is from the factory.
Originally Posted by
hobbs Is the PCV valve even connected to the intake mani?Yes it goes from the top-left of the valve cover to the intake plenum.
Originally Posted by
hobbs Boost apps, where does it go?Just leave it where it is. It will be fine.
Originally Posted by
hobbs 3. Injectors - Is it easy to get at the injectors on a lowport?Not exactly. Not as easy as on a highport anyway.
Originally Posted by
hobbs From the FSM it is only 5 bolts and then it splits in half, is there anything else that I need to remove to be able to get at the injectors?Yes the intake manifold splits in half with those 5 bolts/nuts. You will also need to or want to remove the intake boot from the throttle body, the throttle cable will need moving I think, and you'll have to remove a hose or two from the intake manifold to fully be able to get the top off. Really just go slow and start to remove the top half of the intake manifold and you'll quickly find out what else needs to be removed because it will be preventing you from lifting the top half of the intake manifold up and out of the way.
Originally Posted by
hobbs So can the brake booster line see boost?Yes. It has a built in one-way check valve as well and that prevents the brake booster from seeing boost. However even without the check valve the brake booster would be fine with boost. It just wouldn't provide any braking help while transitioning from boost to vacuum. Keep the check valve in place (it is close to the booster hidden behind a mount holding the line to the fire wall). Just go ahead and leave the brake booster stuff alone and keep the factory line going along the firewall and eventually connecting to the intake manifold at the back by the ECU grounds.
Originally Posted by
hobbs Or does that need to go back into the intake?Nope leave it alone.
Originally Posted by
hobbs I am planning on using the stock DET intake tube and it only has a line for the crank case vent.You're going to need to figure something else out for the idle tube then. And ditch the EGR.
Originally Posted by
hobbs Am I missing anything?You're always missing something. It sounds like you have most of the bases covered but trust me you'll realize you're missing something. It might not be major and you might be able to buy it local with no problem but just realize unless your list is 200 items long you're going to be missing something. Break it down into sub-systems if you want to make 100% sure you have everything. Tell us exactly what you're doing for the turbo oil feed, and the drain, and the water lines for the turbo, and the charge pipe system, and the exhaust system, and the fuel system. I mean you don't have to get into that level of detail if you don't want. You will be fine. I'm just saying there's washers and Teflon tape and random clips and AN adapters and zipties you're going to want to have. Make sure you have new,
high quality injector O-rings! Get extras! And be prepared to struggle with getting the injectors to seal properly. Some type of lube would help but I don't know what type of lube is safe. I did mine dry and it was a nightmare.
Originally Posted by
hobbs Took all next week off to get this done, so I'll have almost 9 days to do it.Sounds like a plan. Honestly you could probably install a few things early like maybe the injectors and ECU. That might be nice to do those things first and take smaller bites. And make sure those are working before moving on.
Originally Posted by
hobbs Actually...
Does the brake booster plug into the intake mani?Yes it does. Back by the ECU grounds or maybe a little to the left. You will see it connects to a hard line on the firewall.
Originally Posted by
hobbs From Vadim's photo, even though its a highport, it seems like the second tube from the intake tube is for the IACV. Is this correct for a na lowport aswell?If I'm following you correctly, then yes you're right. Like I said above, that second large tube that connects after the throttle body eventually makes its way to the main idle control valve (and also the cold idle control valve I think).