building a landcruiser for overland expedition

rideglobally · 09-28-09, 12:39 PM

i started a thread on diesel tech about rebuilding my turbo and replacing my current turbine with a larger one. my question is, what is the largest turbine i can install without too much compromise on reliability. i will also be installing an inter cooler when i install the rebuild turbo. here is the link to that thread, http://forum.ih8mud.com/diesel-tech-...ml#post4826124

picture of my turbo below

thanks

desertguy · 09-29-09, 03:28 PM

57 trim is the biggest you should go. That's good in the 7m Supras for over 400whp with all the other mods so I'm sure it would be big enough here. There are some guys that go 60-1 but they break or have problems a lot faster. Plus, after about 14psi it blows really hot air and just messes stuff up, so if you're planning on going higher than that you should get a different turbo before upgrading this one.

Turbonetics or Driftmotion do these upgrades for like $500. That's a complete rebuld (new seals, etc) with I believe a bored housing and a new wheel.

Make sure you know your supporting mods before you go boosting the crap out of whatever you're putting it on.

rideglobally · 10-01-09, 11:06 PM

i have started the design to install the intercooler on my 12th while waiting for the rebuild of my turbo and the rear axel from Diamond Axel. here is the link on the intercooler, i very much appreciate your input http://forum.ih8mud.com/diesel-tech-...tures-pls.html

thanks you

desertguy · 10-02-09, 06:17 AM

The intercooler isn't nearly as important as your air to fuel ratio and tune. I don't know if it's different for diesels, but for gas you lean out under boost and your motors toast. If you do raise the boost or tweak how much air is going in there you have to account for it. Most of the time on stock injection systems, even though your AFM/MAF reads more air going in, it won't adjust fuel right and your engines a lot more likely to lean out. Also, you've got to be really careful what fuel you use as not all are equal, some will be more likely to detonate even for the same octane rating. Unless it is a diesel, but still. You still have to make sure your engine and everything else are up to par to take the extra power.

You really should get a wideband 02 or something to watch your AFR's as you boost because you don't want a blown motor because an injector gets plugged or your fuel pump goes out.

Like I was saying if your truck is a diesel some of this may not apply. Diesels handle boost better than gas in some cases, but I can't say for sure what to prep your motor for to handle more boost. Might want to look that up or talk to someone that knows diesels well before you throw that turbo on.

But the build looks sick so far. Keep it up.

Tapage · 10-02-09, 03:48 PM

Quote:

Originally Posted by desertguy

The intercooler isn't nearly as important as your air to fuel ratio and tune. I don't know if it's different for diesels, but for gas you lean out under boost and your motors toast.

one of the reasons to love the diesel .. it's really to easy to tune up a diesel with turbo .. it's just easy .. more boost and you can add more diesel .. it's just take care of your EGT and that's it . .

lulo · 10-03-09, 06:31 AM

Great Project!

sandcruiser · 10-04-09, 05:20 PM

can't think of a downside to adding an intercooler besides $ and space. the rest is all benefits.

ok- some may say "turbo lag" but I think that only applies to finely tuned systems running at high rpms. I could be wrong,

rideglobally · 10-04-09, 09:56 PM

here is the first draft of the air scoop, it is 24 inches wide in the front, 21 inches wide in the rear and 4 inches tall, my hood is fiber glass i will also make the air scoop with fiber glass..... what do you think? see picture.

i think the intercooler will be 21 inches long x 12 inches tall x 3 inches thick. my current plan is to install it at an angle over the engine facing the air scoop with a fan. i am thinking of a manually operated switch to operate the fan. basically turn it on at low speed and when the temperature is hot or when needed. i will post mock up picture soon as i get my engine put together ..... thanks

this is just the first draft, i am very open to change!

sandcruiser · 10-07-09, 10:35 AM

4" tall seems excessive

the stock scoop on a new 4 runner is more like 1.5" tall
stock scoop on a Td Montero is less than 2" tall, and less than 14" wide.

I think it would look a lot better if you keep it a little lower profile, just my opinion. Maybe 2" in front and taper it down to 1" in the rear. I do like scoops that are very wide--- looks good that way.

for the sake of symmetry, you might make the scoop opening mimic the opening on the front of the hood (above the grill). ie: make it the same width and height. If you have the skills, matching the contour would be a nice touch.

rideglobally · 10-07-09, 06:38 PM

mimicking the front of the grill is a good idea, i did not think about that. i am also gonna make it lower i will try to get it to about 2 inches. it really depends on how much room i am gonna need for the inter cooler because i am placing the intercooler at an angle, facing the front so that i get maximum benefit from the wind coming into the scoop, i am also thinking about putting a fan on the inter cooler to lessen the heat sink..... thanks

Quote:

Originally Posted by sandcruiser

4" tall seems excessive

the stock scoop on a new 4 runner is more like 1.5" tall
stock scoop on a Td Montero is less than 2" tall, and less than 14" wide.

I think it would look a lot better if you keep it a little lower profile, just my opinion. Maybe 2" in front and taper it down to 1" in the rear. I do like scoops that are very wide--- looks good that way.

for the sake of symmetry, you might make the scoop opening mimic the opening on the front of the hood (above the grill). ie: make it the same width and height. If you have the skills, matching the contour would be a nice touch.

rideglobally · 10-07-09, 10:52 PM

i have stated a thread on diesel tech to instal a pre turbo thermocouple on my 12ht here is the link http://forum.ih8mud.com/diesel-tech-...ht-instal.html
i am using an issopro thermocouple and gage from Diesel Manor..... thanks

rideglobally · 10-10-09, 10:38 PM

i made some good progress today in putting my engine back together: rocker arm, lifters and push rod, begin the installation of a pre turbo thermocouple, manifold and the turbo. i think i can re start the engine tomm and adjust valves. hope that the tapping goes away.

pictures below

next i will finalize the design of the intercooler.

rideglobally · 10-20-09, 04:49 PM

ordered my Aussie Locker today and my custom made axel from Diamond Axel should arrive in two to three weeks. here is the thread i have started in preparation for the installation, we would appreciated your input on this http://forum.ih8mud.com/40-55-series...sfer-case.html

thanks.

also, my rear axel assembly complete with the manually operated locker will be up for sale. i will be posting that on the classified section.

rideglobally · 10-31-09, 11:10 PM

i am having my intercooler made by turbo performance Turbo Performance - For All Your Turbo Related Needs on my 12ht engine and i have ask the owner, Bob to make a couple of extra, in case some of you may be interested in getting one.

i have search the ih8mud and the internet and i have not found a bolt on intercooler for a 12ht engine. so here is one. i have no idea how much they will sell, i can find out if there is an interest..... let me know, i have also posted this on diesel tech.

specs are as follows: the core of the intercooler is 3.5" x 19" x 11", the overall dimension is 3.5"x24"x11", the estimated CFM is 1000.

below is the pictures, it is not yet done but you will get an idea on how it mounts. when it is done it will bolt on your 12th engine..... thanks

BC40 · 11-02-09, 12:53 PM

Quote:

Originally Posted by rideglobally

here is the first draft of the air scoop, it is 24 inches wide in the front, 21 inches wide in the rear and 4 inches tall, my hood is fiber glass i will also make the air scoop with fiber glass..... what do you think? see picture.

i think the intercooler will be 21 inches long x 12 inches tall x 3 inches thick. my current plan is to install it at an angle over the engine facing the air scoop with a fan. i am thinking of a manually operated switch to operate the fan. basically turn it on at low speed and when the temperature is hot or when needed. i will post mock up picture soon as i get my engine put together ..... thanks

this is just the first draft, i am very open to change!

I'm not convinced a forward facing scoop on the rear half of the hood will be effective on a 40. There is such a high pressure zone at the base of the windsheild it actually pushes objects forward off your hood as you pick up speed. Try it, place something (eg a small branch off a tree) onto the center of your hood and pick up some speed. Just my opinion but I really think cowl induction style scoop would work better

.

rideglobally · 11-02-09, 10:08 PM

explain more; what is a cowl induction style air scoop? do you mean moving the scoop forward or do you mean putting a screen on the cowling on the side of the fender connecting to the hood?

thanks

Quote:

Originally Posted by BC40

I'm not convinced a forward facing scoop on the rear half of the hood will be effective on a 40. There is such a high pressure zone at the base of the windsheild it actually pushes objects forward off your hood as you pick up speed. Try it, place something (eg a small branch off a tree) onto the center of your hood and pick up some speed. Just my opinion but I really think cowl induction style scoop would work better

.

BC40 · 11-03-09, 10:20 AM

Pretty much just turn the scoop around facing the cowl like they had on some vintage muscle cars.

miko · 11-03-09, 01:56 PM

Quote:

Originally Posted by BC40

Pretty much just turn the scoop around facing the cowl like they had on some vintage muscle cars.

Total noob here, so ignore me if this isn't helpful.

There was another build thread I just read that raised the same question. http://forum.ih8mud.com/diesel-tech-...ml#post4200069

BTW, love the build. Someday, when there's more money/time/space...

Christian · 11-03-09, 03:55 PM

Quote:

Originally Posted by miko

Total noob here, so ignore me if this isn't helpful.

There was another build thread I just read that raised the same question. http://forum.ih8mud.com/diesel-tech-...ml#post4200069

BTW, love the build. Someday, when there's more money/time/space...

I was gonna post the exact same idea with the strings taped to the hood as they do in that thread, in my modest opinion a great idea!

rideglobally · 11-03-09, 06:52 PM

do you mean great idea to face the air scoop opening toward the windshield?

i will conduct a test using string in my cruiser myself.

by the way that thread was very helpful.

thanks

Quote:

Originally Posted by Christian

I was gonna post the exact same idea with the strings taped to the hood as they do in that thread, in my modest opinion a great idea!

Christian · 11-04-09, 12:41 AM

No I can't take credit for that, I meant the tell tales. I have seen them used on sail boats and gliders. I did not know that air flowed like that across a hood, very informative!

BC40 · 11-04-09, 09:38 PM

Quote:

Originally Posted by miko

Total noob here, so ignore me if this isn't helpful.

There was another build thread I just read that raised the same question. http://forum.ih8mud.com/diesel-tech-...ml#post4200069

BTW, love the build. Someday, when there's more money/time/space...

Quote:

Originally Posted by Christian

I was gonna post the exact same idea with the strings taped to the hood as they do in that thread, in my modest opinion a great idea!

Very helpful Miko

.
I never considered using tell tales like in that thread but it's a great idea. I used to park under a big cedar tree. As I'd drive down the road it was interesting to watch how the debris would clear itself off the hood. Bits would pick up speed as they were blown forward away from the windsheild then just in front of the hooks they'd get picked up and blow back to the windsheild base. I found it entertaining anyways

.

rideglobally · 11-12-09, 09:21 PM

spoke to Diamond Axel today, my axel housing should ship next week. meanwhile i have installed the Aussie Locker on the differential. it was easy took me about 45 min. pictures below.

rideglobally · 11-17-09, 12:00 PM

my plan was to reinforces the chassis on the inside. i am now thinking of placing the 3/16" steel reinforcement on the outside in the same exact location. as you can see by the picture the inside on my chassis is already boxed. this is one of the reason i am thinking of putting the reinforcement on the outside. the other is that i will not have to put a hole on the steel reinforcement, lastly i will not have to move brake line bracket etc. what do you think about this, what are the positive and the negatives.

Quote:

Originally Posted by rideglobally

i am now moving to the next phase of the project which is to strengthen the chassis prior to the installation of my wider axel from Diamond Axel. here is my thread about this on the 40-55 series tech: http://forum.ih8mud.com/40-55-series...-pros-con.html

see picture below, i will be boxing the whole chassis from the transfer case back with a 3//16 or a 1/4 inches .... thanks

rideglobally · 11-19-09, 09:48 PM

here is the monster oil catch can that i build. 10 inches x 5 inches. the fittings input and output are 3/4 inch to avoid build up in the crankcase. i also placed a buffle between the two fitting to minimize oil coming in from being such back out by the output fitting. in addition i placed a thick wire brillo inside, i know it is over build

rideglobally · 11-19-09, 10:03 PM

just got done installing the manual turbo boost controller and the intercooler, i really like this intercooler, during test drive the difference on the EGT was noticeable. i have not test drove it since i installed the boost control today. my plan is to increase the boost to 14 PSI. just want to show you the overview of the engine compartment. i think the last thing i need to do on the engine compartment is a power steering fluid cooler and a second diesel water separator, i got a setrab oil cooler on ebay and i am waiting for it to arrive.... enjoy