Yep I am in Vegas, I am heading to Cali this weekend. I would interested in seeing what your 6.9 runs like with the banks kit on it.
Building a 6.9 to kill
- Thread starter Abull78
- Start date
Yep I am in Vegas, I am heading to Cali this weekend. I would interested in seeing what your 6.9 runs like with the banks kit on it.
vegas39
Full Access Member
I'll pm you.
I've got my fuel turned down a little but we can crank it back up so you can see what it does.
I've got my fuel turned down a little but we can crank it back up so you can see what it does.
Guys I have been going into research overload, engine casting design, crank specs, connecting rod specs, IP specs..........
Here are some of the things that I have found out:
DB2 pump, is fantastic, this thing may be able to dethrone the almighty P pump. in stock setting it can deliver 40hp per cylinder, simple math telling us that with a motor opened up and flowing and turboed, you can get 320hp at the crank with stock adjustments. That can only make me think that a tweaked pump can do a ton more, that means a Moose pump that can deliver 30% more fuel could power 426hp roughly.
Next, our bottom ends are super solid, just insanely tough. the block has 1.26" bosses throughout and the head bolt locations are directly into these bosses. We may only haf 5 head bolts but after some ARP studs I can see these heads holding upwards of 50psi easily depending on CR. The crank is forged from stronger steel than a cummins motor, the connecting rods are forged from a single steel billit, which means the rod and the end cap have their grains all in the same direction so strength is uniform in both pieces.
we do have some draw backs, our heads and our cam. The heads , just like our blocks have more material than in needed, there is a lot of PnP that can go into them and still leave an extremely stong head, with the valve seats and seals that were used, even in stock trim these things will keep from cracking. With some oversized seats and machining for larger seals, they may be indestructible.
That leaves the cam and I found a solution there, not to take away from type4 or anyone else regrinding but, pick the RPM you want power in, from low end to top end, go to CraneCams website, pick a style and lift combo that you want or go with a style and lift package that they offer, tell them what motor you have and you will get a custom ground cam for your 6.9.
Ooops, I forgot the weakest link in the chain, the pistons, our pistons flat out suck, thats all there is to that. We have a short deck height and our pistons are short so that IH could still get a good stroke length from such a short deck height, no piston oilers, and of course they are flat tops. I havent started tracking down pistons yet, I am sure there is something out there pistons come in all shapes and sizes.
Well, thats where I am at so far.
Just because I cant get it out of my head..............the DB2 is awesome and can really be pushed!!!!!!
Here are some of the things that I have found out:
DB2 pump, is fantastic, this thing may be able to dethrone the almighty P pump. in stock setting it can deliver 40hp per cylinder, simple math telling us that with a motor opened up and flowing and turboed, you can get 320hp at the crank with stock adjustments. That can only make me think that a tweaked pump can do a ton more, that means a Moose pump that can deliver 30% more fuel could power 426hp roughly.
Next, our bottom ends are super solid, just insanely tough. the block has 1.26" bosses throughout and the head bolt locations are directly into these bosses. We may only haf 5 head bolts but after some ARP studs I can see these heads holding upwards of 50psi easily depending on CR. The crank is forged from stronger steel than a cummins motor, the connecting rods are forged from a single steel billit, which means the rod and the end cap have their grains all in the same direction so strength is uniform in both pieces.
we do have some draw backs, our heads and our cam. The heads , just like our blocks have more material than in needed, there is a lot of PnP that can go into them and still leave an extremely stong head, with the valve seats and seals that were used, even in stock trim these things will keep from cracking. With some oversized seats and machining for larger seals, they may be indestructible.
That leaves the cam and I found a solution there, not to take away from type4 or anyone else regrinding but, pick the RPM you want power in, from low end to top end, go to CraneCams website, pick a style and lift combo that you want or go with a style and lift package that they offer, tell them what motor you have and you will get a custom ground cam for your 6.9.
Ooops, I forgot the weakest link in the chain, the pistons, our pistons flat out suck, thats all there is to that. We have a short deck height and our pistons are short so that IH could still get a good stroke length from such a short deck height, no piston oilers, and of course they are flat tops. I havent started tracking down pistons yet, I am sure there is something out there pistons come in all shapes and sizes.
Well, thats where I am at so far.
Just because I cant get it out of my head..............the DB2 is awesome and can really be pushed!!!!!!
icanfixall
Official GMM hand model
What do you mean posting... No piston oilers.... All these idi motors have a piston oil cooling jets thats pumping oil up under the pistons....
6.9poweredscout
Bleeds IH red...
IH really does their research before building an engine, they build them for longevity. Severly overbuilt for most applications. Dieselpower had a writeup on the 6.9, I think it ran like 7000 hours at full power before any failure, not 100% sure on the hours but its impressive anyway you look at it. I hope everything works out for you, id love to see a IDI push 500 horse, put it in the pulls and really clean house. I'm planning building a DT466 powered IH pickup for just the pulls sometime in the future.
-Jon
-Jon
funnyman06
Full Access Member
Also for a correction, the DB4 was designed for 40HP per cyl, the DB2 is rated for just about 25. I have heard of someone on here creating a hybrid DB2 DB4 pump, but im not sure how it worked or really anything about it.
Im happy to see that you might be able to get the power youre looking for.
Im happy to see that you might be able to get the power youre looking for.
What do you mean posting... No piston oilers.... All these idi motors have a piston oil cooling jets thats pumping oil up under the pistons....
by oilers i mean the small holes that would have been on the surface of the piston almost at the very edge and running the perimeter of the piston.
We might be agreeing to disagree here. From the black and white info I got, the DB2/DB4 will flow the same rate and can be cammed for the same pressures. The DB4 however, was the newer of the 2 and incorporated more emission friendly additions for timing advance, load governing, cold starting etc. etc.
The DB2/DB4 CAN come in all kinds of flow rates and pressures as there are a bunch of applications that they have been used on, all requiring different flows and pressures.
To add to that, if you were going to build up and tweak a pump for performance, you would be choosing the DB2 because ot lacks all the additional crap that was added to the DB4.
Thoughts?
funnyman06
Full Access Member
Thats very possible, i just know everything i have seen that talks only about the DB2 has said 25HP. I think the DB4 has a larger plunger? But even dieselpower says the DB2 is capable of 6700PSI which is much higher than what our injectors typically use.
But i really dont know about about the these injection pumps to say what they can and can not do.
But i really dont know about about the these injection pumps to say what they can and can not do.
The DB2/DB4 pump was made from the same pump body, they essentially have the same guts except for some things that were required for the DB4 to run the emission friendly poo. Stuff like min/max governor screws and other things will differ too. Metering valve diameter, plunger diameter and so on are all the same, atleast from what I can tell, the drawing I have shows the dimensions and is titled as DB2/DB4, so I assume that they are the same when it comes to the pumps fondational components.
Again, depending on application fuel flow and pressure can be changed with internal parts. I am sure Mel and his Moose pump benifit from some of these interchangeable parts and then machining in some extra.
papastruck
Full Access Member
I was just searching around (this thread is going to get me fired), and I've yet to run into 2 descriptions that are the same. But here's the link to the Stanadyne website descriptions of them:
http://www.stanadyne.com/view.php?id=40
http://www.stanadyne.com/view.php?id=40
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