Dynojet dyno how to pull on it - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 35 (permalink) Old 05-05-2009, 04:09 PM Thread Starter
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Dynojet dyno how to pull on it

never dynoed an auto truck before, going friday to dyno the f250 with spartan 210 on it against some of my mustang buddies, can someone explain if the dynojet needs to be loaded a certain way or if that is only on the mustang dynos??

also how do you make a pull with the auto, shift through the gears till D and then run up the rpm then WOT??

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post #2 of 35 (permalink) Old 05-05-2009, 04:34 PM
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Im a dyno virgin too. But from what Ive read here and on other forums. The dyno will have to be preloaded otherwise you wont be able to build the boost to get good numbers. I think everyone said to set the preload to about 40%. As for going through the gears. I would recommend flogging on your truck a day or two in advance of the event to tighten up the shift points and tranny. Once you are on the dyno. Bring the truck up to speed until the converter locks up. And then squeeze the throttle as hard as possible without making it down shift until you can mash it. Anything above 80mph and you should be flat on the floor. This might take a couple tries to get the pedal feel right.

Good luck and get some big numbers.

Lets just say not quite stock.
Slower than some. Faster than most.
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post #3 of 35 (permalink) Old 05-05-2009, 04:38 PM Thread Starter
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anyway to tell when converter locks up just by feel i guess?,,

all ive ever dynoed has been my mustangs and a few vettes but manuals are a lot easier to get correct! ive got a 600RWHP turbo stang that is fixing to be 1000RWHP

just wanna lay down some good numbers with the 210,, already beat up on some of my friends stangs at the track at 14.35

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post #4 of 35 (permalink) Old 05-05-2009, 04:42 PM
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The converter locks when you get into OD. If you use the DD watch the tranny slip channel you'll see it lock. Slip will go from 100ish to almost 0.

Lets just say not quite stock.
Slower than some. Faster than most.
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post #5 of 35 (permalink) Old 05-05-2009, 04:52 PM Thread Starter
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cool ill make sure i have it up then, so no reason to shift through gears just stick it in D an wait for lockup on DD and slowly mash it?

2008 F250 King Ranch 4x4 Black, 5% Limo tint all around, Spartan 310, Dfuser 4" SS DPF/DOC delete, Husky Liners crappy goodyears, sweet mesh side vents made by myself!
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post #6 of 35 (permalink) Old 05-05-2009, 04:56 PM
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As far as I know.

Lets just say not quite stock.
Slower than some. Faster than most.
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post #7 of 35 (permalink) Old 05-05-2009, 04:58 PM Thread Starter
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cool thanks for the help

think i will reload the 210 v2 tune again and flog it good the next couple days!

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post #8 of 35 (permalink) Old 05-05-2009, 08:17 PM
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I'm pretty sure you load the Mustang Dyno to some percentage, and the DynoJet is to be left alone. I'm 90% sure.

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post #9 of 35 (permalink) Old 05-05-2009, 08:19 PM Thread Starter
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kinda what im thinking too, the mustang dynos you can def load, i think the jets are just loaded by the rollers only

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post #10 of 35 (permalink) Old 05-06-2009, 03:47 PM
 
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Another good way to test things before going to the dyno is to drive down the highway at normal speed, make note of how fast you are going and mash the pedal to the floor. If you have enough speed, the truck will not downshift. Keep doing this reducing speed each time until the truck starts to downshift and note the speed. You want the lowest wheel speed without a downshift when you mash the pedal for direct drive. On my truck it is around 115 km/h. Take the truck up to 3200 rpm on the dyno, no more.
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