Build Lumpskie's Diesel 80 build

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Haha, there's something to be said for that! You mentioned that you have 3.5" of lift on your rig. Did you buy a 75mm lift and it ended up riding a little higher than 3"? (I think GW Nugget mentioned his lift came out a little higher than 3") If that's the case, it might be good new for me. I'm interested in the 50mm Slinky setup but something a little more than a true 2" would actually be kind of nice! BTW, do you mind sharing which springs you got for your rig? (intermediate or heavy) I don't have bumpers or a winch but I still want to plan! Thanks again for the info.
I have the 75mm Heavy coils.
 
I have the 75mm Heavy coils.

Thanks for the reply. From what I've gathered, it seems like you're happy with the spring rate too... Do you run a front sway bar? Do you have any advice for a guy looking into suspension stuff? (50 vs 75mm or Slinky vs other lifts) My goal is a low CG rig that can do long trips into Maine/Canada for now... but still go back to Moab and crawl all the classic trails there. I just don't know if the 50mm lift will give me the ground clearance to hit say... Behind the Rocks or similar.
 
What is your current exhaust situation, what's original, what's upgraded? Stock dump pipe, is the piping all stock sized still, or what?

Hey Ian,

I'm not sure if the dump pipe is stock or not. But, from the hot side of the turbo back, everything is 2.5" pipe with those two mufflers in there. (Honestly, I don't even know what the stock size exhaust piping is!)
 
I think stock is just a bit over 2", less than 2.25" range. To answer your question, some guys run with no mufflers, just the turbo to quiet things down. Cut it out, if you hate it, put it back in. I don't expect it will make much difference to EGT's changing that alone though.
 
Thanks for the reply. From what I've gathered, it seems like you're happy with the spring rate too... Do you run a front sway bar? Do you have any advice for a guy looking into suspension stuff? (50 vs 75mm or Slinky vs other lifts) My goal is a low CG rig that can do long trips into Maine/Canada for now... but still go back to Moab and crawl all the classic trails there. I just don't know if the 50mm lift will give me the ground clearance to hit say... Behind the Rocks or similar.
I've been very happy with the spring rate. I still run both sway bars. I have a set of LCP front sway bar disconnects but they're relatively new and I've not used them yet. I plan to only use them for rockcrawling.

As for lift height of the Slinky's it really depends on your goals. the 50mm coils could work fine even with 35's but would likely require more bumpstop spacing and more trimming to not have tire rub. Personally I would still go with the 75mm coils. Under axle clearance is obviously only improved with larger tires but if you want to still be able to run some of the more difficult Moab trails (or equivalents) then approach, departure angle and breakover clearance is also important. I'd rather be a little taller to keep rocker panels/sliders and bumpers from getting hung up. It still happens, but it can be the difference of scraping over an obstacle and getting completely stuck on an obstacle.
 
I think stock is just a bit over 2", less than 2.25" range. To answer your question, some guys run with no mufflers, just the turbo to quiet things down. Cut it out, if you hate it, put it back in. I don't expect it will make much difference to EGT's changing that alone though.

So, you don't think it will lower my EGTs? Bummer! I was hoping that the restriction was inflating my EGT numbers. Did you notice any difference when you installed your 3" exhaust? I guess I have to get more serious about getting my Evo intercooler somehow mounted and plumbed in...
 
I've been very happy with the spring rate. I still run both sway bars. I have a set of LCP front sway bar disconnects but they're relatively new and I've not used them yet. I plan to only use them for rockcrawling.

As for lift height of the Slinky's it really depends on your goals. the 50mm coils could work fine even with 35's but would likely require more bumpstop spacing and more trimming to not have tire rub. Personally I would still go with the 75mm coils. Under axle clearance is obviously only improved with larger tires but if you want to still be able to run some of the more difficult Moab trails (or equivalents) then approach, departure angle and breakover clearance is also important. I'd rather be a little taller to keep rocker panels/sliders and bumpers from getting hung up. It still happens, but it can be the difference of scraping over an obstacle and getting completely stuck on an obstacle.


Man... I'll have to convince my wife that she'll be able to get into my rig with the 75mm lift. Does your family have to use any steps or anything when getting in and out of yours? We are using mine as a family roadtrip vehicle in addition to being one of my daily drivers... and it is supposed to become the rock crawler and "Expo" vehicle as well...
 
So, you don't think it will lower my EGTs? Bummer! I was hoping that the restriction was inflating my EGT numbers. Did you notice any difference when you installed your 3" exhaust? I guess I have to get more serious about getting my Evo intercooler somehow mounted and plumbed in...

I had my exhaust done by ATEB before I even laid eyes on the truck, along with some other maintenance before flying out to drive it home, so well before I got my gauges installed. I have no direct data to draw from as a result, but I've read a few places that EGT's came down about 100F after doing a full 3" exhaust from dump pipe back.

Removing a muffler from a 2.5" system, maybe you'll notice it, maybe you won't. Hell, you might not even notice re-doing the whole system with 3" piping, I can't really say.
 
Man... I'll have to convince my wife that she'll be able to get into my rig with the 75mm lift. Does your family have to use any steps or anything when getting in and out of yours? We are using mine as a family roadtrip vehicle in addition to being one of my daily drivers... and it is supposed to become the rock crawler and "Expo" vehicle as well...
Yes my wife and kids use the sliders as a step to get in. My wife is 5'3" and maybe I'm fortunate but the only time she complains about the height is when she's in a skirt. I may or may not choose to ignore those complaints since I like watching her climb into the truck in a skirt. ;)
 
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For your EGTs, performance upgrade, I'd upgrade in this order
3" exhaust first, inside frame rails, with the biggest full flow muffler you can fit. They sound crap with no muffler.
EGT and boost gauge, boost controller
Tune,
Intercooler,
Tune,
Turbo upgrade
Retune

3" + tune should improve low end and midrange response, check your tune with egt gauge. Free flowing exhaust and a bit more boost will help reduce egts

As for lift, I had a 4"lift in my 80, now have a 2" lift in my 105 and sold sliders, same chassis, same tires, but on the 105 I modified the frame for longer shocks all round for more suspension travel. The 105 has been wheeled fairly hard and has been all the places my 80 went.

In big rocks, mostly you'll get hung up on diffs first, then rear control arm brackets, or tail shaft, then front bumper/frame rails or rear bumper. I reckon the extra lift really only helps with the last two.
 
For your EGTs, performance upgrade, I'd upgrade in this order
3" exhaust first, inside frame rails, with the biggest full flow muffler you can fit. They sound crap with no muffler.
EGT and boost gauge, boost controller
Tune,
Intercooler,
Tune,
Turbo upgrade
Retune

3" + tune should improve low end and midrange response, check your tune with egt gauge. Free flowing exhaust and a bit more boost will help reduce egts

As for lift, I had a 4"lift in my 80, now have a 2" lift in my 105 and sold sliders, same chassis, same tires, but on the 105 I modified the frame for longer shocks all round for more suspension travel. The 105 has been wheeled fairly hard and has been all the places my 80 went.

In big rocks, mostly you'll get hung up on diffs first, then rear control arm brackets, or tail shaft, then front bumper/frame rails or rear bumper. I reckon the extra lift really only helps with the last two.


Thanks for the reply. So, it sounds like removing the first, small muffler might help me a bit. I've already tuned to the max acceptable EGTs, at 23psi on my Gturbo Grunter. But, I experienced what the acceleration was like on the max profile of my aneroid rod... and I want to get some of that back!

I think I'll get rid of this guy and see if it makes any difference to my EGTs:

 
Nothing too exciting but we did get another decent size snow storm out here. So we went up to the cabin to rack the roof. Turns out there was more snow out there and the roads weren't plowed! The Landcruiser did awesome with the snow depths being between 6" and 30" on the road.



 
OK... I'm going to ask the question. I keep reading about how the radius arm suspension on these 80s doesn't flex. It seems that everyone complain that all of the bushings in the front lower control arms make the suspension stiff.

My question is "Why hasn't anyone used a spherical bushing in place of the stock rubber bushings?" I'd imagine something like the SPC Flex joint, Johnny Joints, or Orbit Eyes would help. Does anyone know why these options aren't popular? I've used Orbit Eyes on the leafs of my Tacoma for years now and love them...
 
Ok, how about this... Does anyone have the actual dimensions of the front lower control arm to body bushing? I'm looking for bolt size, outer diameter and width.
 
No exciting updates but, I am scheduled to get my A/C system filled next week. (That will be a big deal in summer)

Also, I'm pretty disappointed by my Focal IC 165 speaker on the driver's side. It's rated at 70W RMS, 140W peak and it's acting like the voice coil is coming apart. It sounds like a blown out speaker but, when I took it out and inspected it, there was no visible sign of damage. When I gently pushed on the cone, I could hear a faint scratching sound. It sounds like the cone is rubbing on the pole piece for the coax tweeter. While I was looking at it, I noticed a couple of metal shavings that seemed to come out from the back side of the cone. My guess is that I'll just have to replace it and, since I haven't seen speakers sold in singles, I'll have to buy 2. Bummer.
 
@Box Rocket

Where did you buy your sliders from? Trailgear.com shows them listed for $200 but that doesn't factor in shipping. If I can get them for less than $300, I'll probably just go that route.
 
@Box Rocket

Where did you buy your sliders from? Trailgear.com shows them listed for $200 but that doesn't factor in shipping. If I can get them for less than $300, I'll probably just go that route.
I got mine directly from TG. But there are a few different TG vendors that might have different pricing. Check with LowRange Offroad maybe. I know they sell TG products.
 
Disclaimer: I don't know diddley squat about diddley squat! Here is my experience so far. As you know, I have had EGT issues. Note that I said issues and not problems. My EGT issue can be corrected by letting off the throttle a bit.

When I got it it had the standard factory boost and it had the power rod mod done by ATEB. (more fuel) this leads to higher EGT. My issue occurs when I punch it from stand still or even just getting up to speed on the highway. I have to modulate the throttle to do it without going over 1200 F. Once I hit my cruising speed, then the EGT will hover in the 700s. On longer uphills the EGT will slowly creep. Very slowly. Out here that is not an issue but driving from Moab to Denver it quickly became an issue. I basically got stuck driving with the big rigs on the left lane. That really sucked. Im talking 30mph and lower.

I finally got the balls to up my boost a little. So I did the turn to let it go to about 18psi. It rarely goes over 16 so Im still in the safe zone. By upping the boost I am able to get up to speed much quicker. What I really need to do is mess with the fueling. Only problem is that I need to drink to get the courage to do that but when I get drunk I can't do that. Im in a mexican standoff with myself :hillbilly:

I have 3" pipes done by ATEB paid for by the PO. They sound really nice!

Basically my next step is to get a tune followed by intercooler followed by bigger turbo. That will solve all the problems.

So, it seems that you have a similar issue to the one I have. So in the mean time I will tell you a story that happened recently that turned my overfilling high EGT thing into a positive that made me love this beast even more.

So there I was driving home. I now have to take little BS roads because the damn highway collapsed. I just find out another one collapsed just about an hour ago. Anyway I get into this side street and this stupid driver is driving 4mph. He is looking at house numbers. 10 minutes later Im getting pissed. 3 minutes after that that I get irate and my window comes down and I start with my usual profanities. Finally this dumbass stops in front of a house 3 feet from the curb so no one can pass without going into oncoming traffic. Now we are looking at a this lady walking out of her house as slow as possible and then walking back in because she forgot something. Meanwhile there is a line of 15 cars waiting. as this lady is locking her door I open my window again and politely tell her to move her ass into second gear and step on it. She gave me the finger and told me to go fxxx myself. Now she was about 4 feet away from the car picking her up. I notice that all the windows were open and it was at this precise moment I got the confirmation once again that there is a god because all of a sudden there was no oncoming traffic.

I smiled at the lady and waved at her. She tells me to go fxxx myself again as she reaches for the door. I turn my steering wheel and press the pedal to my new carpet and go full bore. The cruiser roars awake. I see my EGTs go up quickly And instantly a huge cloud of thick black soot comes pouring out of my exhaust. I do have a lift and my exhaust is just level with the rolled down windows of this mercedes. I move forward making sure the soot gets evenly dispersed inside this car with the lady in it. I am happily on my way falling in love with my ugly cruiser once again.

At the next traffic light all the cars waiting with me caught up to me. Words like awesome and epic poured into my ears. One woman was clapping. The next guy said she went back into the house and the driver pulled into her driveway. Boy did that feel good!!!!

Moral of the story: You can turn overfueling with high EGT into a good situation when opportunity presents itself :flipoff2:
 
@ZeGerman

That is the best story that I've heard in a long time! I like how she had to go back inside... classic. As for EGTs, I ended up going with 23-24psi boost on my Grunter and that took care of my issues. But, my fuel rod is turned down to the least aggressive side. So, I think I'm going to use the stock intercooler from my Evo and fab up the piping. The only thing I need to figure out is the manifold attachment. After that, I'm hoping I can use the most aggressive side of the fuel rod. My rig really moves when I have it turned to that side!

What profile are you using? Also, what intercooler setup are you planning?
 
@ZeGerman

That is the best story that I've heard in a long time! I like how she had to go back inside... classic. As for EGTs, I ended up going with 23-24psi boost on my Grunter and that took care of my issues. But, my fuel rod is turned down to the least aggressive side. So, I think I'm going to use the stock intercooler from my Evo and fab up the piping. The only thing I need to figure out is the manifold attachment. After that, I'm hoping I can use the most aggressive side of the fuel rod. My rig really moves when I have it turned to that side!

What profile are you using? Also, what intercooler setup are you planning?

A Grunter?????o_O I don't feel bad for your high EGTs anymore :D If you are going the custom route, I suggest you take a look at @Dervis Garip build thread. The intake manifold he put together makes sooooo much sense. I do believe that every Turbo Diesel requires an intercooler unless you use the Im a pussy setting.

I still do not have the balls to open up the boost compensator to check out the aneroid pin. I tend to be that way until I have seen it being taken apart and put back together. I was planning to go air to water but then I got a hold of a 79 hood so that scoop will eventually get grafted to my hood sometime in the near future. At that point it would make sense to go the custom air to air route. I have been told that that should suffice.

Over 20psi!! Your rig must be super angry with the get up and go. I have to admit that I am slightly more than envious of the grunter. Did your fuel rod ever get messed with? Customized in any way? Did you put in the grunter? If you did, how different is it to the stock CT26? I have started s*** talking this guy in a 4bt ford pickup so eventually I do need to backup my s*** talking :hillbilly:
 
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