Re: Electronic to Mechanical Pump

Posted by jdemaris on April 03, 2006 at 18:44:37 from (66.218.23.85):

In Reply to: Electronic to Mechanical Pump posted by bm3501466 on April 03, 2006 at 18:17:12:

I've done a few but it's been awhile. Yes, the mechancial DB2 pump is MUCH better, cheaper to buy, cheaper to work on, more reliable, etc. But, some states don't allow the change because of emmissions laws. Here in NY, no one seems to care or notice. The only major component you need is the mechancial DB2 pump and they're easy to find. That's what the Chevy 6.2s and early 6.5s use in civilian use, and with the military, they kept the system for everything, also the Ford-IH 6.9s and 7.3s (the Ford pumps won't fit a Chevy). I've got a bucket full of DB2s. The pump off a 6.2 is fine, but the fuel should be turned up a little. Some HD trucks that have the three-speed T-400 automatic trans. might need a VRV valve attached to the pump. If you don't have one already, then you don't need it. It simulates changes in engine vacuum by sensing moviement on the injection-pump throttle linkage - but I think it's only uses with the T-400 trans. VRV stands for Vacuum - Regulating - Valve.

The guy that owns the 6.2-6.5 diesel website has an article that gives all the details you need. The following is the link to his site - just cut and paste. I think his site is not all free anymore - but if you email him, he might send you the info. Also, at the bottom of this message is the "blurb" from an ad that runs almost constantly on Ebay where the plans are for sale. If you cut and paste that link, you'll pull up an old Ebay ad and you can contact the guy if needed.

http://www.62-65-dieselpage.com/

Electronic Fuel Injection to Mechanical Fuel Injection Part II
By Jim Bigley
Why switch from EFI to MFI? The answer is simple; injection system replacement cost. This article completes what was stated last year by giving you the final pieces of the puzzle for converting your 1994 or newer 6.5 diesel to mechanical fuel injection.

From the Ebay seller:
The DB2 Conversion Guide is a new book that provides all the information needed to successfully convert a Stanadyne DS4 electronic fuel injected Chevrolet or GMC 6.5L Turbo Diesel to a reliable DB2 mechanical fuel injection. It includes a complete parts listing (with GM part numbers), list of suppliers and where to source low-cost and easy to find parts necessary for the conversion. In addition to the text, there are detailed full color pictures and wiring charts. The Guide covers all affected components including throttle pedal, turbo wastegate, automatic transmission operation and cruise control.
Volume 1.0 covers 1994 - 1995 2WD trucks with 4L80E automatic transmission and 1994 - 1995 2 and 4WD with manual transmissions. It has information pertinent to other models of trucks, but not specific instructions.

The DB2 Conversion Guide will also show you how to eliminate these other troublesome components:
Vacuum pump & related hoses
Vacuum Turbo Boost Canister
Electronic Throttle Pedal (APP)
Boost pressure & IAT sensors
Link to Ebay:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=8032252230&category=34216

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