Post Your Successful Diesel Mods At Dieseldatabase

Have you completed a successful mod on your diesel truck? and did you take pictures and discovered tips that might help others? Your post is welcome here. All you have to do is register on this site. Then contact us via the the contact form on the ABOUT page (see menu), letting us know you […]

Service Record Spreadsheet

Click the link below for the Excel version of Service Record Spreadsheet Service Record Spreadsheet [thanks to WBUSA used with permission]

12V TPS Wiring Diagram

For TPS adjustment, Joe G. suggested using a potentiometer in the ground circuit. I decided to try it and It really gives a much better range of adjustment than elongating holes in the TPS body. Here is a schematic drawing showing how to wire it. Using the above circuit, adjusting the potentiometer adds resistance to […]

Another Pyrometer Installation

A. THERMOCOUPLE INSTALLATION – The R650 Thermocouple mounts into a 1/4″ pipe thread. If the exhaust manifold is already drilled and tapped, install the thermocouple at that location. If none is provided, make a 3/4″ hole in the exhaust pipe, not more than 6″ below the exhaust-manifold-to-exhaust-pipe connection and weld the R680 bushing into the […]

Fuel Filter Usage

Here’s a photo showing the condition of my original fuel filter after 24,000 miles – never been changed to this point since new: The photo is a bit misleading the overall condition of the old filter is actually not bad at all – lots whiter down in between the pleats than can be seen here, […]

Turbo Charger Swap Guide

Completion time : 1 Hour HX35 12 CM HX35-21CM The following guide details the swap out between a modified HX35 with a 21CM Housing to a HX35 With a 12 CM Housing. The work is being done on a 2002 CTD. After Removing the Air Filter and hose…. Step 1 : Disconnect the Inter Cooler […]

Velvet Ride Shackles

Velvet Ride Shackles, made by BF Goodrich Aerospace, are designed to replace the rear spring shackle, and create a more comfortable, less buck-board feel ride by absorbing some of the harsh bouncing of the stiff heavy duty springs. They basically use a rubber torsion device inside of the shackle.  I bought mine from 4 Wheel […]

Diesel Thunder 2006

Lem stayed up late the night before and was working into the morning installing the Snow Performance water/methane injection system on his 2002 Cummins. As a result, we were late to the Dyno Drags for this year’s Diesel Thunder hosted by Northwest Bombers (local division of TDR). I and our friend Thom, who was working […]

Bronco Fuel Tank Mod

When I upgraded my Fuel System pick-ups and returns, and try to plumb a balance line between the front and rear tanks. I found out that the Broncos used a single 33 gallon rear mounted tank. With the combined capacity of about 38 gallons using the OEM F-series tanks, I figured I could loose the […]

Cummins 12V Idle Adjustment Q&A

Subject: [RTML] Cummins idle speed How do I adjust the idle speed on my Ram diesel? The idle speed seems too high. First, trace the accelerator linkage to the connection on the fuel pump. With the ENGINE OFF have someone floor the accelerator and watch the fuel arm move. The best position I can describe […]

Stewart Warner B833 Gauge Ultra Shift Light Install Sheet

Click the link below for the pdf version of Stewart Warner B833 Gauge Ultra Shift Light Install Sheet Stewart Warner B833 Gauge Ultra Shift Light Install Sheet [thanks to Stewart Warner used with permission]

12V Cummins Governor Lever Adjustment

Here is the ins and outs of the secret governor lever adjustment This is a cut away view of the governor of a P7100 pump. Notice how the lever hit the cam plate flush at the very bottom edge. To check your adjustment the throttle lever needs to be moved until the lever just touches […]

Dodge Cummins Fan Removal

The thread is left hand; from the front of the engine you turn the wrench to the right (toward the driver side). Do this when the engine is cool. Some people pull the entire fan/hub assembly out past the radiator shroud, others remove the fan first, then remove the hub. In many cases, a drift […]

Port and Polishing

First, you will need cutters. In the next photo you will see some of the cutters I use for this. On the right are metal cutters. These cost $20 to $75 each, so choose wisely. In the middle are sanding cones. I use #80-100-220-240 grit. I use a long mandrel and a (not shown) short […]

SCT Livewire

Since hands down the SCT is the tuner of choice I’ve noticed for hardcore diesel enthusiasts, there have been a lot of threads as of late on the LiveWire. Since it’s a fairly new product I figured I’d put something together to highlight some of its features and hopefully demystify it for everyone. My first […]

Control Module – ECMS

There are three computer modules which coordinate to control the Ram power train. Engine Control Module (ECM) – On the left side of the engine behind the fuel filter Fuel Injection Pump Control Module (FPCM) – On top of the injection pump Powertrain control module (PCM) – bolted to the Ram firewall under the hood […]