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-   -   Fuel Pin Videos (https://www.dieselbombers.com/1st-generation-dodge-cummins-89-93/37296-fuel-pin-videos.html)

muskrat 11-29-2009 01:59 PM

Fuel Pin Videos
 
If you're looking into getting a fuel pin and want to see what they can do, I'm posting some good stuff to watch. M&H Inc is one of our sponsors and have a selection of profiles that allow you to tune your truck to your liking. :pca1:
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. completly stock except 4 inch strait pipe. 73HP/140TQ at the wheels with stock fuel pin at its deepes...
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. 4 inch strait pipe. 165HP/443TQ at the wheels with M&H Inc M1 fuel pin
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. 4 inch strait pipe. 176HP/473TQ at the wheels with M&H Inc M fuel pin
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. 4 inch strait pipe. 187HP/524TQ at the wheels with M&H Inc M3 fuel pin
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. 4 inch strait pipe. 185HP/518TQ at the wheels with M&H Inc M4 fuel pin
dyno run of a stock 1991 non intercooled dodge ram 250 diesel with a getrag 5 speed 3:54 gears. 4 inch strait pipe. 182HP/510TQ at the wheels with M&H Inc M5 fuel pin

Also Here is a DennyT vid, because it too, is a great pin.


RSWORDS 11-29-2009 02:05 PM

What were teh numbers from the dyno?

1st genny nut 11-29-2009 02:12 PM

thts crazy i gotta get me one

muskrat 11-29-2009 02:15 PM


Originally Posted by RSWORDS (Post 441265)
What were teh numbers from the dyno?

Duh. I'm on it.

FRadisi 11-29-2009 02:19 PM

Definitely one of the first mods I do when I get one :D

muskrat 11-29-2009 02:51 PM

I coppied the info on each run and I am confused by the numbers made by the stock pin?? must be an error.

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Also, notice that the highest numbers made were by the M3 pin, not the M5.:humm:

RSWORDS 11-29-2009 02:57 PM

I bet it has to do with over fueling down low.

muskrat 11-29-2009 03:20 PM

Ok, so all of the M&H pins have the same profile @ the deepest point, the different pins are different because of the way they move into the deep part of the pin. A different shaped lip, so to speak. Then it seems that the M3 would probably be the best all around fuel pin because, there is less wasted fuel @ lower boost, and it just moves into full fueling in a more efficent manner.

RSWORDS 11-29-2009 03:46 PM

Yep, and that is why I will be running a M3 next year pulling.

DieselPerformanceGuy 11-29-2009 04:16 PM

alright so what would u guys think, should i ditch my bully dog and get the m&h pin or should i stay with the BD.

Also muskrat what was the next best pin, hp wise.

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Never mind its the m4
sorry

muskrat 11-29-2009 04:39 PM

Your BD pin is essentialy the same as the M5 pin. So, looking at all those videos as a test - a mostly stock truck, no variables, the same dyno, just a swap of fuel pins, it shows that the M3 pin makes the most power, period. As the profile gets more agressive, the less efficient it becomes, because the rack is basicly just dropping into the fullest fueling point(the deepest part of the pin), dumping fuel in that won't burn (because of low boost), rather than moving in a more efficient path. Utilizing more burnt fuel versus sending unburnt fuel out the pipes. Thats how I'm seeing it.

tower_ofpower 11-29-2009 05:45 PM

stock numbers have gotta be off... i thought these old girls came with roughly 185 horse to start with?

muskrat 11-29-2009 05:49 PM


Originally Posted by tower_ofpower (Post 441415)
stock numbers have gotta be off... i thought these old girls came with roughly 185 horse to start with?

Yep, it has to be a misprint. They should be around 160 hp. My 85 4runner has more than hp than what the first vid shows:D

Richie O 11-29-2009 05:54 PM

A stock cooled truck with a rag should be upper 140's lower 150's. A stock non cooled truck with a rag should be maybe 5 hp above that.

seandonato73 11-29-2009 06:31 PM

yeah a little confused of the first dyno run hp and tq, i know my truck was gutless stock,but cummins is normally close to the hp they say the engine is rated at, i think my buddies 4 banger jeep has more then 78hp

RSWORDS 11-29-2009 06:50 PM


Originally Posted by Richie O (Post 441423)
A stock cooled truck with a rag should be upper 140's lower 150's. A stock non cooled truck with a rag should be maybe 5 hp above that.

I've heard of bone stock tucks putting down 160hp at the wheels, the numbers in teh stock video have to be wrong.

Richie O 11-29-2009 06:52 PM

I saw a 90 non cooled truck put down 166 but he had turned the fuel cone to deepest. Rest was stock.

FRadisi 11-29-2009 07:07 PM

That low hp stock doesn't seem right to me...

DieselPerformanceGuy 11-29-2009 08:13 PM

and the torque is way to low 140 ft lbs of torque and they're rated at 400 ft lbs. Somethings not right.

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Originally Posted by muskrat (Post 441381)
Your BD pin is essentialy the same as the M5 pin. So, looking at all those videos as a test - a mostly stock truck, no variables, the same dyno, just a swap of fuel pins, it shows that the M3 pin makes the most power, period. As the profile gets more agressive, the less efficient it becomes, because the rack is basicly just dropping into the fullest fueling point(the deepest part of the pin), dumping fuel in that won't burn (because of low boost), rather than moving in a more efficient path. Utilizing more burnt fuel versus sending unburnt fuel out the pipes. Thats how I'm seeing it.

Yea thats true, but i still think i'm going with the m3 pin and will give my PA the BD.

Alwaysworking 11-30-2009 10:32 AM

The numbers on the videos are what came up for the dyno pulls, the guy running the dyno didn't think they should be so low but, we ran the dyno the same for the white truck and it made good power.

Budgreen 11-30-2009 10:49 AM

I think also to remember there is tuning that can be done for each level of pin to make it better, the M5 was probably over fueling on the bottom end which can be somewhat fixed with smoke screw/star wheel adjustments.

guessing these tests were done with no adjustments of anything other than a pin change.

TTipsword 11-30-2009 03:01 PM

so does this mean that the Denny T pin must over fuel also since it is cut pretty deep also?

muskrat 11-30-2009 03:26 PM

I think it does to a certain extent, but as Budgreen stated, you can tune your AFC to help with that. The M&H pins all have the same profile, which is relitivley the same a a dennyt pin, they just vary on how they enter into the deep part. And mind you, it is only on the bottom end, that it is over fueling. I think that really only affects you if you're competitive in pulling or racing, where a few feet on a pull, or a second off your time will make or break you.

TTipsword 11-30-2009 03:35 PM

so with a denny T pin and my pump mods, how should i tune it to improve the bottom end? im not worried about smoke at all but the faster the better!

muskrat 11-30-2009 03:46 PM

I think all of the adjusting is in the AFC. When I put my M4 pin in I had the smoke screw in flush with the lock nut (2 turns) and no star wheel adjustment. RSWORDS suggested moving the smoke screw back out to help spool up. I tried that and it helped, but I ended up giving the star wheel a full turn and keeping the smoke screw at one turn and that is where I'm at now. And I like it. Just play with it untill everything feels right.

RSWORDS 11-30-2009 04:28 PM


Originally Posted by TTipsword (Post 441958)
so does this mean that the Denny T pin must over fuel also since it is cut pretty deep also?

At a point, yes. for most people, it will be fine. I was very happy with my DennyT (and still am) but with the addition of the 6x16's and some of the other fuel mods it fuels way to hard down low. As was said earlier, you can tune alot of the heavy fuel down low out, I have the star wheel and smoke screw all the way up and that helped but It will still over fuel the turbo and put the fire out. I will be getting a M3 from M&H this winter and giving that a try to see if it helps out any.

RSWORDS 11-30-2009 04:31 PM


Originally Posted by muskrat (Post 441983)
I think it does to a certain extent, but as Budgreen stated, you can tune your AFC to help with that. The M&H pins all have the same profile, which is relitivley the same a a dennyt pin, they just vary on how they enter into the deep part. And mind you, it is only on the bottom end, that it is over fueling. I think that really only affects you if you're competitive in pulling or racing, where a few feet on a pull, or a second off your time will make or break you.

With the DennyT my truck is a dog if I just mat it. All it does is smoke like a freight train and lug along untill it finally lights the turbo. Once it does hold on though! If I roll into teh throttle the truck is alot quicker!

Again, I'm running alot of fuel. Didn't have that problem untill I put teh 6x16's in and re-indexed and ground the throttle level for more swing and fuel.

TTipsword 11-30-2009 04:53 PM

ya my truck is the same way. probably not to the same extent as yours but if i floor it it just putts along and smokes with terrible turbo lag. i will try backin the star wheel all the way up.

ArizonaRedneck 11-30-2009 05:02 PM

good one muskrat helps answer some of my questions i think i will be trying on the m3 from M&H thanks


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