So are we back to the drawing board for turbo kits?

[flow]

Slim, what do you mean by the wrong shape? Because it hangs so low? I agree that the location of the intercooler is poor but the arrangement is optimal. (its better to increase the height dimension more so than width or thickness, with respect to the flow of charge air)

I dont think it will be easy to plumb an intercooler behind the grill.

Has anyone considered not using an intercooler? Its a lot of hassle for a turbo setup that is not shooting for large HP. Running lower boost (as most people will) shouldnt produce the heat in the intake charge that would necessitate an intercooler. Running the intake charge pipe directly to the throttle-body would be cleaner, cheaper, save space, and reduce lag. Chemical intercooling with meth/water injection is an excellent alternative when in this situation.




Scottryana, I was wondering how you got to that dollar amount for a headgasket R&R.


Also, in my search to find the correctly sized turbo for our motors, I found the Borg Warner matchbot. It is an awesome tool: http://www.turbodriven.com/en/performanceturbos/matchbot.aspx
Even if you are shopping for a turbo of a different brand, you can set up your parameters and take the raw data out of the app to plot on any compressor map you want. Beats doing all the math yourself.

 

[clownmidget]

Someone needs to figure out an IC that can sit behind the factory grille. Might be a way to do it with a 1" core. The difficulty is that i don't think the stock rad can move back much, or at all, due to fan clearance. and if you have a 2nd battery i don't know where you are going to route the plumbing.

And CX's thinnest cores are 2.5" thick.

Maybe a solution includes an electric fan replacing the oem fan.

there's plenty of room between the grill and AC condenser/radiator to fit an air-to-air intercooler. the safari kit placed it there and I believe Dusty put his there. Also Photoman did one for his TRD supercharger (https://forum.ih8mud.com/showpost.php?p=980136&postcount=1). it simply requires ditching the relatively small transmission oil cooler and relocating a larger one lower, between the frame rails.

lots of good stuff here with some links...
https://forum.ih8mud.com/80-series-tech/115856-turbo-intercooler-placement.html

 

[scottryana]

Flow,

I called and talked to a few reputable 80 shops and a simple R&R of the headgasket was in the $1200-1500 range. With the Toyota HG kit. Without doing a lot of the other things.

I am not sure if you went back and read a lot of the other turbo threads but there was a big discussion on which turbo compressor's and maps fit with the 80's 4.5L engine and rev range at the boost levels you want. To run low boost and still flow enough air at the higher rev ranges the turbo size needs to be a little larger than if you are shooting for low end torque. In my opinion you have 3 options:

Larger turbo low boost <6-7psi flows enough to not choke the motor at high revs - stock computer/fuel
GT40, PTE67, BW9180, etc

Small turbo higher boost >18psi tapering to produce low end power and flow at high revs - needs computer/fuel
GTX3071, PTE55, BW7064, etc

Something in the middle 10-12psi
GTX3076, GT35, PTE58/62, BW7670, etc

I used the matchbot program when I picked my BW7670.

 

[NerdNoise]

Why is everyone so set on turbos? Does TRD not have a bolt on supercharger that adds 120 hp and 120 ft-lbs with only a 20% parasitic effect? Isn't that the way to go? Go with a Toyota product that will work instead of trying to reinvent something? I'm looking for an HP boost and I've been following these turbo threads and can't figure out what's wrong with going the TRD route?

 

[js93cruiser]

Why is everyone so set on turbos? Does TRD not have a bolt on supercharger that adds 120 hp and 120 ft-lbs with only a 20% parasitic effect? Isn't that the way to go? Go with a Toyota product that will work instead of trying to reinvent something? I'm looking for an HP boost and I've been following these turbo threads and can't figure out what's wrong with going the TRD route?

The trd adds nowhere near 120 hp... And pumps hot air into your motor, that being said ill probably go with the trd because I don't want a race truck with turbo lag

 

[scottryana]

Turbo lag is as simple as selecting the right turbo size. You can pick a turbo that will spool before the torque converter if you want to. I have boost at 1700rpms and could have gone even lower. These arguments just go round and round, same with the vortec/LS swap or the cummins swap. Until real representations of all of them are in the same place at the same time everyone is just talking s***. Lol

 

[2KCruiser]

I was thinking the same thing. New site URL should be ih8mudbutluvtalking****.com

 

[Rookie2]

I didn't interpret that as talking s***. A little uninformed, maybe. Asking a question that's already been answered, sure. s*** talking... I didn't read it that way.

 

[scottryana]

Haha sorry it was like 1am, shouldn't be posting on mud when getting home that late.

But I do think lots of the back and forth is pretty impossible for anyone to answer until they get a few of the options together.

 

[Rookie2]

How much boost does your setup push at 1700 rpm, or is just starting to spool and essentially no boost at that point? I guess what I'm getting at is when to you actually start to feel the affects of your turbo?

 

[scottryana]

You start to feel the turbo earlier. Even if you aren't running positive pressure in the manifold you are running less negative pressure. I would say I maybe have 3-400rpms where the torque converter is engaged and I don't feel the effects of the turbo. I guarantee the TRD supercharger isn't making positive pressure from idle. But it is similarly decreasing the vacuum.

** Edit it isn't until 2500 RPM's that the TRD Supercharger with the stock 3.2" pulley finds positive pressure.

2500 eng rpm = 6016 SC rpm = 230cfm engine demand = 230cfm SC

4000 eng rpm = 9625 SC rpm = 408cfm engine demand = 430cfm SC

5000 eng rpm = 12031 SC rpm = 480cfm engine demand = 530cfm SC

Hard to explain and even harder to understand I am sure but really all that needs to be done is find a few similarly equipped trucks (35's stock gears, armor, etc) put them in 2nd gear, 2nd gear start, idle them out on the road side by side and punch it. If you compared a stock truck, supercharged truck and turbo truck it would all make pretty good sense I think.