T3 T4 Hybrid Turbo OHV

[l8psiExplorer]

hey just wanted to stop and say hi and let you know you have a great build. I has white 98 turbo explore sport that you can go on youtube and see the videos I have done of it. here is my youtube name l8psiExplorer. I miss it so bad so I am doing anew project now its a light blue 98 explorer sport I am putting in my DSS 331 with trick flow heads and I am going to put twin turbo GT45R turbos on it also. if you had a sniper tuner I would give you my file from explorer it mad 352 on 5psi to rear wheels pushing past the stock clutch. My turbo was 63mm turbo T4. it had 42lbs injector from racetronix and the GS340 purple fuel pump
all stock motor never had it apart for anything. My explorer was together for over 9 years and is still going strong the last time I had seen it. sorry for high jacking you thread here is a pic of the new project that I am doing now and pics of the turbo OHV 4.0L

 

[l8psiExplorer]

 

[Caejxr]

[MENTION=53570]l8psiExplorer[/MENTION] No sweat dude, your blue ex looks super clean it's very nice. Did you ever take your old one to the 1/4mile? I'm guessing it's the white sport there. I bet with that much power that was very very fun to drive. Some of the time I wish I kept mine a little more clean but all the junk has its uses off road

So, I logged in today to see if anyone has tried to do a top mount intercooler like on a WRX. I haven't really found anything but I think I could do it on mine. See, the location I have it now, I don't think the scoop is getting enough airflow. The other day it was 78 outside and I was seeing intake temps at 104 when I got into boost to pass. The biggest concern I would have with moving the location is heat soak. It would be above all the heat of the engine, pass side exhaust manifold and turbo.

Another idea is getting more sheet metal and building a ram air for it which could be more or as effective and I wouldn't have to cut the hood or change the current intake track and impeller housing orientation. No heat soak worries with this idea. I'm leaning toward this option...

The last idea is buying a wider intercooler, building a scoop to fit it and plumbing it in with some u bend pipes. This is the most expensive option and it gives me less clearance in the front.

Edit: I think I've settled on routing the wastegate back into the exhaust precat to quiet the donkey down. The last 2 times I went out to data log Barney was following me around for a few blocks until I went home both times.

 

[l8psiExplorer]

just a fyi here is how I had mounted mine and my air temps where very low

 

[4pointslow]

Turbos

18psiexplorer, welcome back!
I agree with Caejxr, the blue truck looks real clean, nice find!

Caejxr, have you posted pictures of your truck, I looked in this thread and didn't see them?

Edit: I think my computer is messed up, it wont show the pictures in the beginning of the thread for some reason.

 

[l8psiExplorer]

4pointslow thank you so much I am hopeing to have mine dune here soon and I will take lots of pics along the way for all you guys and gals to look at.

 

[Caejxr]

I agree that the fmic would cool how I need it to the problem I have is my winch is mounted between the frame rails right there. I'll try and put some front end pics up tonight.
I've got the intercooler mounted flat under the rails with a scoop but I think I'll be building air ram up to the front bumper to help channel the air better.

 

[Caejxr]

The winch controller is behind the passanger side kc light in the grille

Here's the intercooler behind the winch.

This one just shows the clearances under the front end

All in all its not ideal. I suppose I could be better off with a air to water intercooler but I'm adding extra cost for the cooler, the lines it would require and any extra intake ducting and couplers.

 

[Caejxr]

[MENTION=81804]4pointslow[/MENTION] I guess some of my posted photos through the project fell off? I dunno. But by request.

 

[4pointslow]

Explorer

That things is big and awesome!

You would never know there is a turbo in there, until you hear it I guess.
Have you had a chance to take it off road with the turbo?

 

[Caejxr]

Only once or twice so far and I didn't really beat on it. And on a few of the dirt roads recently up to a hiking spot I like. It's made a huge difference in the sand for sure. I'm looking forward to locking the hubs and seeing how it responds in 4 with the front locker and all that power. Good thing I have those life time warrantied half shafts haha

 

[Caejxr]

I haven't addressed the intercooler issue yet but I identified another issue to fix too. The oil cooler and lines added about a quart and a half of capacity. Based on how the return line is on bottom of the cooler all that oil drains into the pan which seems to have contributed to a more lean start since I filled it. Simplest fix will be swapping the lines at the cooler so the return line is on top to stop the drain back and if needed installing a one way valve at the cooler in the feed line to keep it from draining back. This will also fix the split second it takes the lines to pressurize making the cold start a little easier on the cylinders.

Also, I got the mustang drive shaft spacer from steeda to get rid of vibrations caused by an over extended slip yoke. The drive shaft bolts that came with it were .5" hex cap bolts which kept coming loose. They just never got tight enough. So I ordered a bag of M12x40 course thread bolts with the 12mm head from grainger. Like 25 for only 4 bucks. First time I ever went on their page, not bad. Fit just right and with some lock tight and a good ratchet they have been doing me solid

 

[Caejxr]

So the other day a sport trak was trying to race me down the highway so I thought why not and obliged him. Put it in 4th and stepped on it. Pulled away and giggled to myself cause he was probably thinking I had no chance... Then today I tried just passing a Lexus who was driving slow and he decided to step on the skinny pedal for whatever reason and tore away at warp speed. Reminded me I was still driving an explorer haha.

 

[Dono]

Yup, it isn't easy to get 4700 pounds moving. I have to mention the unsprung weight of your boots also.

Doesn't matter, you have a purpose built vehicle that's extremely capable. Take the Lexus to the dirt and see what happens.

I'm impressed with what you have accomplished.

 

[Caejxr]

Yup, it isn't easy to get 4700 pounds moving. I have to mention the unsprung weight of your boots also.

Doesn't matter, you have a purpose built vehicle that's extremely capable. Take the Lexus to the dirt and see what happens.

I'm impressed with what you have accomplished.

Thanks Dono took some time start to finish and there's still some work to do. Little here little there like the intercooler or oil cooler peeves I have. But overall I'm happy with where it's at. Didn't think it would ever move as fast as it does now. Even though I always told myself I'd never take on this project I'm glad I did.

 

[Caejxr]

Took some time to go wheeling up to big bear today. Didn't realize there was a bike race going up the mtn on the same trail we took. Did our best to share the road and to try not kicking up much dust for all of them as we passed.

Didn't use 4 once going up. This thing is just a mountain goat with the extra torque.i noted a few spots I want to make some small tweaks to the maf function but I feel good about where it's at. And it sounds sooo good.

 

[Dono]

That turbo sounds like its sized perfectly for your application.
Near perfect drivability = complete success.

What's your next mod going to be.

 

[Caejxr]

I want to build sliders a cage and skids for it...but...

The very next thing is going to be some TLC for the coilovers. About 2 years back I had my bump stops off and snapped a shaft on my "back up" set and bent the other... their in for repair as of today. Initially I thought it was all due to not having bumps installed but after inspecting the truck from this last trip I realized the geometry is off on my coilover brackets I've got on there. So I have my newer set I'll be getting re-shafted in about a month too (slight bends in the shafts at the lower spring retainer.

What has been happening is the coils are making contact with the frame before full droop which isn't in itself a big deal but when the suspension is flexing past that, it becomes a problem.

I can fix it by moving my limit straps but their already limiting droop at about a half inch from full extension anyway so their really not the problem.

The other option to fix it, which is what I will be doing is adjusting the mounting of the bracketry. I'll move the bottom mount out toward the wheel about a half inch to an inch while also slotting the top of the shock bucket to allow me to move the top bracket out more and I'll put 1/4 to 1/2 inch spacer plates behind it on the back. All said and done that should solve the problem I'm seeing. It's simple but will be a lot of work to get it done. I'll have to pull the front suspension apart and the turbo down pipe so I can get everything fixed. It will probably take me most of a Saturday if not stretched out over a week in the garage.

 

[Caejxr]

I'm bringing the afrs down on the top end closer to stock. I was at 11.3 and I've got it closer to 12.0 and cruise at 14.7 to 15. Accel I'm still working to get into the 13s instead of 11s but it's a mix of the maf xfer function and failed maf table so it's a bit of playing with it and getting good data logs

 

[Caejxr]

Update: Got the AFR'S nailed down darn close to what I've been targeting. The failed maf table had a much stronger effect that I had originally expected. I found that if the load in the table was too high the fueling would reflect the load on that table v what I was commanding and targeting causing it be be richer than I wanted on acceleration. Got it fixed based on the loads on my data logs at certain throttle positions and my AFR'S are right where I want them now.