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6.5/6.2 High Performance Engine Modifications High Performance Turbocharger and Engine Related Modifications Discussion Forum - Specific To The GM 6.2 & 6.5 Diesel Engine.

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Old 12-07-2014, 06:35 PM   #1 (permalink)
bowtiebutler956
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Using the Ford DB2 inlet on a GM DB2 pump

Alright, I recently decided it was time to upgrade my DB2 to a more performance minded unit, and get the most fuel I can safely get from it. Here recently DieselPro helped me overcome an early engaging governor on my current setup. That said, I contacted him to see if he could help with my new pump, and after several PM's back for trying to establish what it is I expect from it, I sent it to him.
I don't know if you guys have seen the tiny inlet these pumps use, but its really small (I think about 3/16). Thanks to DieselPro's knowledge, he said this could be taken care of by using a Ford DB2 inlet, and he then custom built a hose fitting that has a 1/4" ID, and 5/16 OD. This will allow me to use a lager hose, and I'll be modifying my FFM with a larger fitting. Here are a few pics he sent me of the fitting he made, and the difference between the Chevy, and Ford pump inlets.
Hopefully he'll chime in shortly. Thanks DieselPro.
(Some very hard to come by info here)

Matt

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File Type: jpg P1010470 (480x360).jpg (34.2 KB, 402 views)
File Type: jpg P1010480.JPG (24.0 KB, 408 views)
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93 K2500, 4x4, 160,000 miles, 4L80E, Ext Cab, F code 6.5TD, GU6 3.42's, G80 Posi.
HX40WII CKO Turbo with genuine Holset compressor, and wheel. 56/83
PT Wiring Solutions HX installation kit, and wastegate.
31x12x3 Air to air intercooler, Peninsular upper intake, K47 air box.
Custom 2831-5079 IP by DieselPro with genuine Bosch Germany 311 nozzles popped to 2250 by DieselPro
3" Diamond Eye downpipe from Leroy Diesel with homemade 4" exhaust.
HO water pump, 190 Delco T-stat, 9 blade steel cooling fan, Modified fan clutch for early engagement.
CKO "Improved" heads, ported, with diamond precups, +.010 Felpro's, and ARP head studs.
Superior 4L80E shift kit. Manual TCC Lockup Mod.
3" lift in the front, 2" in the rear

Last edited by bowtiebutler956; 12-07-2014 at 06:52 PM.
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Old 12-07-2014, 08:25 PM   #2 (permalink)
MackManiac
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Very cool. I have had 3 1982 model pumps in my possession now and each them had a fitting that will allow the use of 3/8 hose
The port is larger than the later fittings also. I don't believe it's as big as what your showing though.

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Last edited by MackManiac; 12-07-2014 at 08:26 PM.
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Old 12-07-2014, 08:36 PM   #3 (permalink)
bowtiebutler956
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Quote:
Originally Posted by MackManiac View Post
Very cool. I have had 3 1982 model pumps in my possession now and each them had a fitting that will allow the use of 3/8 hose
The port is larger than the later fittings also. I don't believe it's as big as what your showing though.
Actually, in my conversations with DieselPro he said he could make a fitting that would allow me the use of 3/8 hose, but said that 5/16 would be plenty big, so I chose this route. I wasn't aware the 82 pumps came with a 3/8 hose fitting on them. You learn something new every day. Thanks

Matt
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93 K2500, 4x4, 160,000 miles, 4L80E, Ext Cab, F code 6.5TD, GU6 3.42's, G80 Posi.
HX40WII CKO Turbo with genuine Holset compressor, and wheel. 56/83
PT Wiring Solutions HX installation kit, and wastegate.
31x12x3 Air to air intercooler, Peninsular upper intake, K47 air box.
Custom 2831-5079 IP by DieselPro with genuine Bosch Germany 311 nozzles popped to 2250 by DieselPro
3" Diamond Eye downpipe from Leroy Diesel with homemade 4" exhaust.
HO water pump, 190 Delco T-stat, 9 blade steel cooling fan, Modified fan clutch for early engagement.
CKO "Improved" heads, ported, with diamond precups, +.010 Felpro's, and ARP head studs.
Superior 4L80E shift kit. Manual TCC Lockup Mod.
3" lift in the front, 2" in the rear
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Old 12-07-2014, 09:04 PM   #4 (permalink)
DieselPro
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Think the Ford 3/8" used a compression fitting with a "square" O'ring inside of it. The thread type is a little hard to find. The thread is 1/2" x 20, which is the same as a fine thread bolt. Think it is referred to as a SAE straight thread. The Inlet cones are hardened and are not easy to re-thread so this is the best method.

One important note: Stanadyne used different inlet cone configurations to accommodate different inlet screen assemblies. The inside of the cone must have the same configuration to work properly.

I don't purvey this as a HP enhancement. Just a "bigger is better".

Try and find this on the net.

Last edited by DieselPro; 12-07-2014 at 09:06 PM.
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Old 12-07-2014, 09:56 PM   #5 (permalink)
turbonator
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we have been drilling/re-threading ours now for 5 years, we tap the inlet out to 1/4 inch NPT, then drill out a common NPT push-lock fitting to .250" I.D.....
these are only case hardened, so once the initial hardening is breached, they drill/tap easily..... like diesel pro says, its not an HP booster, but it insures all the fuel needed at high RPM.....

now, if we could only get dieselpro to start EDMing head and rotor assemblies out to .370", EDMing the fill and spill ports to make them flow more, and using stanadyne plungers with the part #11102 (from basic group number 11101) .....
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Old 12-07-2014, 10:11 PM   #6 (permalink)
bowtiebutler956
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Quote:
Originally Posted by turbonator View Post
we have been drilling/re-threading ours now for 5 years, we tap the inlet out to 1/4 inch NPT, then drill out a common NPT push-lock fitting to .250" I.D.....
these are only case hardened, so once the initial hardening is breached, they drill/tap easily..... like diesel pro says, its not an HP booster, but it insures all the fuel needed at high RPM.....

now, if we could only get dieselpro to start EDMing head and rotor assemblies out to .370", EDMing the fill and spill ports to make them flow more, and using stanadyne plungers with the part #11102 (from basic group number 11101) .....
Sure wish you guys would use basic English that the slower guys like myself could understand! EDMing? I assume this is some sort of boring/machining procedure?

Matt
__________________
93 K2500, 4x4, 160,000 miles, 4L80E, Ext Cab, F code 6.5TD, GU6 3.42's, G80 Posi.
HX40WII CKO Turbo with genuine Holset compressor, and wheel. 56/83
PT Wiring Solutions HX installation kit, and wastegate.
31x12x3 Air to air intercooler, Peninsular upper intake, K47 air box.
Custom 2831-5079 IP by DieselPro with genuine Bosch Germany 311 nozzles popped to 2250 by DieselPro
3" Diamond Eye downpipe from Leroy Diesel with homemade 4" exhaust.
HO water pump, 190 Delco T-stat, 9 blade steel cooling fan, Modified fan clutch for early engagement.
CKO "Improved" heads, ported, with diamond precups, +.010 Felpro's, and ARP head studs.
Superior 4L80E shift kit. Manual TCC Lockup Mod.
3" lift in the front, 2" in the rear
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Old 12-07-2014, 10:37 PM   #7 (permalink)
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Must be the liquor talking. EDM is Electrical Discharge Machining. Where the machine actually removes metal thru an electrical arc... From what I have seen a very Sloooow process. Kinda like when you strike an arc on your favorite wrench on the battery and a chunk of metal is burnt off. EDM is just on a pin point scale. I seen it used to remove broken off taps and bolts in high dollar parts.
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Old 12-07-2014, 10:40 PM   #8 (permalink)
bowtiebutler956
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Quote:
Originally Posted by DieselPro View Post
Must be the liquor talking. EDM is Electrical Discharge Machining. Where the machine actually removes metal thru an electrical arc... From what I have seen a very Sloooow process. Kinda like when you strike an arc on your favorite wrench on the battery and a chunk of metal is burnt off. EDM is just on a pin point scale. I seen it used to remove broken off taps and bolts in high dollar parts.
Thanks for bringing it down to my level DP.

Matt
__________________
93 K2500, 4x4, 160,000 miles, 4L80E, Ext Cab, F code 6.5TD, GU6 3.42's, G80 Posi.
HX40WII CKO Turbo with genuine Holset compressor, and wheel. 56/83
PT Wiring Solutions HX installation kit, and wastegate.
31x12x3 Air to air intercooler, Peninsular upper intake, K47 air box.
Custom 2831-5079 IP by DieselPro with genuine Bosch Germany 311 nozzles popped to 2250 by DieselPro
3" Diamond Eye downpipe from Leroy Diesel with homemade 4" exhaust.
HO water pump, 190 Delco T-stat, 9 blade steel cooling fan, Modified fan clutch for early engagement.
CKO "Improved" heads, ported, with diamond precups, +.010 Felpro's, and ARP head studs.
Superior 4L80E shift kit. Manual TCC Lockup Mod.
3" lift in the front, 2" in the rear
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Old 12-07-2014, 10:44 PM   #9 (permalink)
floyd400
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bowtiebutler: am I trippin or did you like turbonators post twice
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Last edited by floyd400; 12-07-2014 at 11:09 PM.
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Old 12-08-2014, 12:25 AM   #10 (permalink)
roadhog0
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Hmmm, Ive got some spare pumps around. Time to go junkyarding and find a ford pump and do some frankensteining!!

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