Jason63
New Member
i was just curious because im broke and a buddy has a good 6.2 ip, not sure if the firing order is enough different to cause problems or something else maybe?
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will 6.2 ip work on 6.5?
- Thread starter Jason63
- Start date
Turbine Doc
Just Another Diesel Guy
no, 6.2 IP is mechanical, your is "fly by wire" Ds4 unless converting
Jason63
New Member
well i know that mine is electronic but hes got all the stuff to convert, i was just wondering if the 6.2 IP was much different than the 6.5 mechanical ip, i would like to convert anyway, but if i do what about the pcm will it get confused and not let it run, do i have to put the older one in as well?
ak diesel driver
6.5 driver
getting it to run is the easy part just one wire. if you have a manual tranny easy there too. If automatic there's the complication. Lots of guys have done it do a search.
Jason63
New Member
yeah its a 5 speed manual
Jason63
New Member
but whats the diff between 6.5 and 6.2 pumps then? nothing?
ak diesel driver
6.5 driver
ones mechanical the other is electronic. The early 6.5s had a mechanical pump.
Jason63
New Member
ok i finally found an old post says the mech pumps are the same, so thanks
Missy Good Wench
Wild Blonde from Cloud Mt
If you have a "J" engine pump your set.
Remove the cover and turn the Fuel control screw up about 1/4 turn or so to give the thing more fuel to handle the Turbo.
The DB2 from the 6.2 has smaller plungers and wont fuel quite as much but if your truck does not have a chip in the puter it will run fine.
Ratman has a DB2 on his 5 speed truck and the little creature runs sweet.
I have ridden in his truck a couple times and the thing is just lovely.
With the 5 speed ya just do away with the ses light bulb and go on about your merry way.
A 4911 IP from a 92-93 6.5 (DB2) would give you the best performance overall of the DB series pumps.
The DB2's from the early 6.5 trucks had larger plungers and will deliver more fuel.
The DB2 from the 6.2's will work ok but you will be slightly limited as to the max fuel delivery capabilities.
Overall I would go for it.
MGW
Remove the cover and turn the Fuel control screw up about 1/4 turn or so to give the thing more fuel to handle the Turbo.
The DB2 from the 6.2 has smaller plungers and wont fuel quite as much but if your truck does not have a chip in the puter it will run fine.
Ratman has a DB2 on his 5 speed truck and the little creature runs sweet.
I have ridden in his truck a couple times and the thing is just lovely.
With the 5 speed ya just do away with the ses light bulb and go on about your merry way.
A 4911 IP from a 92-93 6.5 (DB2) would give you the best performance overall of the DB series pumps.
The DB2's from the early 6.5 trucks had larger plungers and will deliver more fuel.
The DB2 from the 6.2's will work ok but you will be slightly limited as to the max fuel delivery capabilities.
Overall I would go for it.
MGW
Turbine Doc
Just Another Diesel Guy
Heretics you, Rich and others a Pox curse on you
No with what MGW/Rich & other that have converted say is very viable alternative especially with a manual trans. was a guy selling a conversion manual a while back Bobbie martin, memeber on Diesel Page.
You said you low on funds but only indicated you had the IP, that won't direct cross over, you'll need the rest of the stuff to make it work, if you have that great, if not about cheapest way to get back running is a remanned IP from pensacola Diesel on ebay IIRC there; remanned IPs with no PMD is under $500.
buddy
Active Member
If you wire in the TPS to APP1 sensor input to the PCM should prevent a few codes. That is a dark blue wire that goes to pin F of the APP harness, back to pin C4 of smaller pink PCM harness.
Nevermind thats only if you had an auto. Which then you could actually just use the original PCM with mechanical IP and auto trans.
You dont even need the TPS it looks like.
Nevermind thats only if you had an auto. Which then you could actually just use the original PCM with mechanical IP and auto trans.
You dont even need the TPS it looks like.
Ratman
6.5 Diesel NUTCASE
Heretics you, Rich and others a Pox curse on you
I am not up on the details of dealing with the automatic transmission with the DB IP conversion, however, chevybobgreaser here at DTR has very specific details on making the 4L80E work with a DB.
He is also a very pleasant guy.
Now, Tim, -I know you're just giving me a couple rib jabs there, -all in fun I know. ):h
What I will say is that with my manual transmission, my mechanical pump is simply leaps and bounds above my old DS in terms of precision and driveabilty. Heck, I just about ran over people in parking lots when engaging the clutch with the DS setup because it would occasionally buck, -and sometimes it would just get plain nasty.
The DB I have now may not deliver the fuel that my old chipped DS pump could, -but the truck IS physically quicker on an accelleration run, -mainly due to the IMMEDIATE response of the mechanical pump, -call for fuel to get the turbo spooling and the engine making power, -and it happens NOW, -no BS OBD-1 computer deadband, -fuel RIGHT NOW.
That's my main praise about the DB, consistency, simplicity, precision, driveability, -reliability.
I know, when a chipped DS is working right, they DO work well, -mine was just one of those that was never happy, -and I have remedied the entire situation with the DB conversion.
I can't say I would have done the same thing if I had a 4L80E, -but I do not, so it was a no-brainer.
And, to answer the original poster's question, the main difference between a 6.2 and 6.5 DB2, -the 6.2 pumps used .290" plungers, the 6.5T used .310" plungers.
A .290" plunger pump turned all the way up will run a 6.5T without any problem, but won't get ya much past 220HP or so.
Those are rough HP numbers at best.
Acesneights1
New Member
I have said this before in other posts, The DBs were no shining star either. There was a plastic gear IIRC that goes as well as the fact that they were not rated for low sulfur ,let along ultra low sulfur fuel. I replaced many of them. Some within 60k. Listen to TD, get if from Pesacola. He also has a website if you hunt around. Others have used him no issues. I'm gonna be ordering one in the next few weeks. nothing wrong with a 5521 as long as clean fuel is used and PMD relocated. Both mine have approx 150K+. Also if you insist on using your "freinds" pump I would at the very minimum have it bench tested. it will save you alot of heartache later.
daustin
Member
I recently replaced my DB2 with a newer version from a military HUMMV, i replaced the solinoids with 12v ones and it runs just fine on the ULSD. The military versions (mine was made in '07) are more robust and tolerate the newer fuel better according to my local Standadyne shop. I had them replace the solinoids and bench it, my dually runs a lot better with a pump that's not worn out. lol
Don
Don
Turbine Doc
Just Another Diesel Guy
Now ya'll don't go whuppin up on Rich, my jabs were purely in jest, the DB2 does have merit, if nothing else in your diagnostics wondering if it's a IP or other issue, with mechanical you pretty much know when it's acting up, with DS4 you got to prove to yourself you don't have a IP/control issue before moving on. For example, I was having a over-rev issue recently turned out to be bad torque converter result of losing all trans fluid last year at highway speed.
Was it APP, was it IP, was it PCM, was it 4L80 problem, all that had to be gone through 1st, so for simplicity DS2 has it hands down,
Perfomance differences, that one is still open to debate, Rich would have to drive a fully tweaked DS4d truck or I'd have to drive a tweaked DB2'd one otherwise it's a matter of ones opinion with just half the story, both agree that current configurations are vast improvements ove what our trucks once were.
Bill Heath the guy that set the fastet 6.5 record as Bonneville used a off the shelf DS4
Was it APP, was it IP, was it PCM, was it 4L80 problem, all that had to be gone through 1st, so for simplicity DS2 has it hands down,
Perfomance differences, that one is still open to debate, Rich would have to drive a fully tweaked DS4d truck or I'd have to drive a tweaked DB2'd one otherwise it's a matter of ones opinion with just half the story, both agree that current configurations are vast improvements ove what our trucks once were.
Bill Heath the guy that set the fastet 6.5 record as Bonneville used a off the shelf DS4
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Acesneights1
New Member
And there you have it. If the DB2 was better he'd be pushing them. Like I said before I have owned more 6.2s than 6.5s and changed more DB2s. In my prime I could with another one sitting there, swap a DB2 in about 2.5 hrs.
Ratman
6.5 Diesel NUTCASE
Ok, now I'm really getting worried about my DB2. I think I'm going to go back to a DS4 as soon as fiscally possible.
NOT!!
Time will tell how well my DB works out. It only cost me $480, -so far, so good.
Not trying to stir up a hornets nest, just stating how well I like the DB, -again...
NOT!!
Time will tell how well my DB works out. It only cost me $480, -so far, so good.
Not trying to stir up a hornets nest, just stating how well I like the DB, -again...
Non Typical
Roller of the Smoke
Ok, now I'm really getting worried about my DB2. I think I'm going to go back to a DS4 as soon as fiscally possible.
NOT!!
Time will tell how well my DB works out. It only cost me $480, -so far, so good.
Not trying to stir up a hornets nest, just stating how well I like the DB, -again...
Totally agree with ya man. The DB-2 is the way to go, just for simplicity. The less electro-crap, the happier I am. My Dad's 95 has had lots of troubles. Pump went out, PMD went out. I know of 3 other DS4 related problems within my circle.
Quite simply, there is less crap to deal with when it's mechanical. Most experienced 6.5ers seems to think that the setup I have on the truck, is the ideal one to have. Short of a dually.
Turbine Doc
Just Another Diesel Guy
Let's just say many 6.5er's have that opinion I don't think most is probably quite right, I'm 50/50 on that assertion myself simplicity is better, but I think economy/emissions(fuel) is better with electronic, or GM would not have moved there. Knowing now what I do about the DS-4, and moving the driver off the IP where it should have never been located in the 1st place, I'm not disappoined with IPs performance yet on either of my 6.5s with DS4s.
After saying that I'll probaly have them both die tomorrow