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General Discussion for all diesel-related topics
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Buildup Showcase Threads - All Engines, Vehicles

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Performance Discussion

Performance increases, diesel racing, turbo modifications, etc.
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Cummins Tech Section

Tech specifically for Cummins B series engines.
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Common Rail

Discussion on common rail technologies
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WVO / SVO / Biodiesel

Place for discussion for use of alternative fuels (vegetable oil -- & biodiesel )
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Methanol / CNG / Propane Blending

Place for discussion for blending of Methanol/H2O, CNG or Propane Alternative Fuels into your diesel system
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CNG Dedicated Engines

Technical discussion for dedicated CNG / LNG / Biogas Engines such as Cummins-Westport
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Transmission, Adapter, Transfercase Discussion

Discussion of transmissions, transmission-adapting, and transfer cases for conversions
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Paint and Body

Paint, Body, Other Misc Resto Discussion
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Suspension Design

The place to talk about suspension design, implementation, discussion
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Axles & Differentials

Ford 9", GM 14 Bolt, Toyota, etc...
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General Modification Discussion (Non-Engine)

The place to discuss general modification of trucks, wheelers, cars, etc. Not specific to the diesel engine.
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Diesel Motorcycles & Conversions

Diesel motorcycles and conversions of motorcycles to diesel.
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Engine & Vehicle Specific Sections

Cummins 6BT / 5.9 Conversions

Discussion related to conversion of the Cummins 5.9 B series engines
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Cummins B3.3, 6AT, & Cummins Variants -

Discussion related to other, rarer Cummins applications.
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Isuzu 4BD1T/2T

Topics related to the great Isuzu 4BD1T and 2T engines & related
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Mercedes OM617 & Variants

Forum for conversions with the Mercedes OM617 Inline 5 Indirect Inject Turbo Diesel from early 80's Mercedes Cars.
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Mitsubishi Diesels

Discussion of Mitsubishi diesels and variants
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Volkswagen Diesels

The famous Vee-Dub 1.9 TDI and IDI and other variants, 2.0, etc etc. Adapter talk, putting these into other vehicles, etc.
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Toyota Diesels

Related to the Non-USA and Canadian/World Wide Toyota Diesels. 12H-T, 1HD-T, 3B, etc etc...
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General Motors V8 Diesels

Duramax, GM 6.2 and 6.5 diesel swaps
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Detroit, Perkins, Caterpillar

Conversations on Detroit, Perkins, Cat variants for the purposes of conversions & general discussion.
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Deutz & Other Aircooled Diesels

Discussion of a wide variety of air-cooled diesel models
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Ford Diesels

Ford 6.9, 7.3 idi, 7.3 Power Stroke, etc.
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Cummins into Fords

The specifics of Cummins Conversions into Fords... All the small and big aspects of the conversion...
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Other Engine Swaps

General conversions of all types of diesel engines
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Classifieds & Vendor Showcase Classifieds are open to users who have been members for more than 20 days and have at least 10 contributing posts. The "Want to buy" section is open to all users.

Vendor Showcase

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General Classifieds

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Vehicles For Sale

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Want to Buy

For those things you need - NO FOR SALE ITEMS HERE NO TRADE ITEMS
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Misc Stuff For Sale

For the selling of misc stuff not diesel conversion related
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Vendor Member Section 4btswaps.com Supporting Vendors

Vendor Deals

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Regional

Regional Events & Get-Togethers

The place to have events and shoot the sh** with other members from the board.
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Latest Posts See all new posts
  1. Cummins Tech Section
    First post here but I've been lurking for months. I got a descent deal on a 4BT without a fuel pump (came with a VE originally). Unfortunately for me, I thought a VE pump was a VE pump and that was that. Now I'm finding out there are several variants out there but I'm not having much luck...
  2. Cummins 6BT / 5.9 Conversions
    Hi all, i've got a 12V p-pump and i'm looking to run a compound setup with the HX35W as the primary (small) turbo with a HT3B or S400 (72 or 75) which are fairly common compound options. Setting it up for towing. I've got 3/4k governor springs here to put in and afc live to tune it when ready...
  3. New member here doing a lot of research into a new motor for my 76 motor home. A Dodge Chinook that is in great overall shape other than an old motor and bad fuel milage. I have looked far and wide as to what could be put into this small 18 ft unit and feel the R2.8 is it. I wondered if there...
  4. Transmission, Adapter, Transfercase Discussion
    After my bread truck TH475 crapped the bed I had a buddy hook me up with a TH400 built for 500hp. I grabbed a TC290 torque converter for the Allison 545 transmission and boy am I disappointed. The stall is so low and tight that just putting it into drive sounds like I'm popping the clutch and...
  5. Transmission, Adapter, Transfercase Discussion
    This question is a path to simple Allison TCM selection and programming. Is it possible to program an Allison tcm for manual shifts only ? This would create a manual selection 5 or 6 speed Allison transmission. I can get an Allison with a TCM reasonably. The Allison is a 2500 made in 2006...
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