1986 Grand Wagoneer Cummins R2.8 Swap

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BaldBeardedBastard
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Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by BaldBeardedBastard » Sun Nov 28, 2021 4:32 pm

Took the Wagoneer on a short jaunt to a trailhead for some hiking today. It's running great and no leaks.

However the ride quality is dog water. My two guesses here is the springs were installed and tightened without the weight of the vehicle or it's the Bilstein shocks. I'm going to loosen the springs at the shackles, shake the heck out of it and torque it down to see if the bushings are bound up now. Any experience on the forum with the bilstein 5100 series? Also open to any other suggestions!

And if this is going to cut it for long road trips, I need to stop puttering around and get the cabin noise down. Way too loud as it is! But that's going to roll into the rewiring plan as I want to get the old carpet out anyway to run new trunk lines and loom.

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Yeller
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Location: Rogers County Oklahoma

Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by Yeller » Sun Nov 28, 2021 5:07 pm

I’ve had good experience with 5100’s however they could be too heavily valved. I’ve had issues with leaf springs not aging well and ride being the biggest issue more than sagging. Along with that the choices of off the shelf replacements are appalling and really well engineered custom replacements are quite expensive and very few options for quality builders.

The above reasons are why I did the 63” leaf swap in the rear and doing links and coils up front.
The bus I ride is so short it is a yellow Smart Car full of squirrels, monkeys and clowns.

1970 J2500 Resto Mod

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jaber
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Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by jaber » Sat Dec 04, 2021 8:49 am

Search eBay for "Kilmat" sound mats. Did the inside of a '58 Ford and made a world of difference.
Jeff

'46 cj3a
'51 Willys p/u
'51 Willys Parkway Conversion
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service truck
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'88 Grand Wagoneer
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TurboJ4000
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Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by TurboJ4000 » Mon Dec 06, 2021 5:36 am

jaber wrote:
Sat Dec 04, 2021 8:49 am
Search eBay for "Kilmat" sound mats. Did the inside of a '58 Ford and made a world of difference.
I second this. Eastwood also sells kits that are well priced and way cheaper than the name brand Dynamat. Eastwood calls it X-Mat. They make several types for floor and roof etc.
1970 J4000 / Chevy Frankenstein in progress
Soon to be Lq4 6.0 and 4l80e on 35s


bigun
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Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by bigun » Mon Dec 06, 2021 11:35 am

Okay This guy can teach you everything you want to know about making your vehicle interior quite and insulated from heat

https://www.youtube.com/c/BatdogGarage

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BaldBeardedBastard
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Joined: Fri Jan 29, 2016 2:52 pm

Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by BaldBeardedBastard » Fri Jan 14, 2022 6:12 pm

bigun wrote:
Mon Dec 06, 2021 11:35 am
Okay This guy can teach you everything you want to know about making your vehicle interior quite and insulated from heat

https://www.youtube.com/c/BatdogGarage
Thanks for this Bigun- I am working through his videos.

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BaldBeardedBastard
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Joined: Fri Jan 29, 2016 2:52 pm

Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by BaldBeardedBastard » Fri Jan 14, 2022 6:30 pm

Happy New Year everyone. Had some travel and work shifts keeping me away, but now back to working on the woody.

UPDATE

I figured before I sound deaden/replace the carpet, it would make sense to get the electrical cleared up( before I cover it up). Man oh my it was a thread that once you pulled at it, it came apart.

First the fun new shiny bits- going with a bunch of blue sea busbars to clean things up, Bussmann circuit breakers to keep the runs to the fuse blocks safe, panel mount pass through a to clean up/replace the firewall connection, and new fuse blocks to replace the original/add auxillary.

Additionally I am going to be adding a rear 'subpanel' behind the driver side panel in the cargo area. This is the same 12 circuit Blue Sea fuse block with an under frame auxiliary battery and a MPPT charge controller for the Sun power panel on the RTT. To keep the house battery and the starting battery connected/disconnected based on voltage, I am using a ML-ACR auto charging relay.

That's the fun side- today was me digging into the engine bay wiring harness and assessing what I can reuse, where to put the relays/fuse blocks, and what I can cut out entirely.

Hopefully will finish up the engine bay tomorrow and then can start in on the interior. Next weekend should be me working on the aux panel with the second battery. Here's the hoping until the one gremlin ruins the plans :-). Image
600A busbar, 100A bus, 12 Ct Fuse block & aux switch panel for relays.
Image
100% safe and not crusty at all
Image
The bulkhead is actually cracked straight down the middle
Image
Rear of the bulkhead. For me about 25% of these are not currently used.

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BaldBeardedBastard
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Re: 1986 Grand Wagoneer Cummins R2.8 Swap

Post by BaldBeardedBastard » Sun Jan 16, 2022 6:10 pm

Progress has been made. Less than I had hoped, but I am really glad I tore it all apart and am slowly putting it back together. I found quite a few sketchy connections and WAY too many unfused runs. Most of them will have to hold out for the fuse block install, but I feel good about the main interconnect upgrade.

The battery runs two welding wire runs- 1 to the starter and the second to the 600a bus. Then there are currently 4 OCP'ed outputs/inputs. The 150a for the alternator(max output is around 125-130a), a 100a for the new fuse block, the glow plugs for the Cummins with a fusible link, and a 30a in line for the ancillaries of the ECU. I have 2-3 more connections in the future, but for now this is what's needed.

Currently all of my feeds to the in cab factory fuse block had their fusible links removed(!). Not ideal in the slightest so I am going to remedy that as soon as I can. Also had a number of bad splices and tired connectors.

So question for you all- what is your go to high-conductor count(>6) connector for replacing factory? I have use weather packs but they are limited to 14awg and I haven't found greater than 6 pins. Image

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