BOOST vs. DRIVE PRESSURE

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Everyone wants to talk about BOOST numbers, but no one wants to talk about DRIVE PRESSURE! Drive pressure can be a killer, and will cause catastrophic failure if left un-checked, and incorrect, for too long!
Lenny talks about the importance of drive pressure, and how to accurately check it on your vehicle!
Thanks for watching!
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Опубликовано:

6 окт 2022

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Комментарии : 44

@zacharyruble6368 Год назад

Thank you for taking the time making video, great info! Always learn something.

@DynomiteDieselTV Год назад

Glad it was helpful!

@timothymroberts2949 Год назад

Great video Lenny. Very informative and insightful.

@DynomiteDieselTV Год назад

Glad it was helpful!

@projectrollingthunder9049 Год назад

Grate video really well explained. I have a adjustable waste gate and was surprised when messing about with it how after the sweet spot those egt spirals and the truck actually looses power

@DynomiteDieselTV Год назад

Glad it helped!

@reallyaintbuynit2018 Год назад

Turbos. I am going with one I bought from DAP. I am not going for crazy HP numbers. 400 at the flywheel is is fine. Great video BTW. One of Lenny's videos on how they make injectors got my interest. I already had a set of +50hp not installed from someone else. I ordered a set of Stage III nozzles from DDP to swap in. After watching another injector video by Lenny I wish I just ordered a set of their Stage III injectors. I may do that still.

@DieselPowerProducts Год назад

Fantastic video dudes. Nice work!!

@DynomiteDieselTV Год назад

Thanks a ton!

@jasonmarshall4594 Год назад

Awesome video man 👍🏻

@DynomiteDieselTV Год назад

Thanks! 👍

@mileswatkins2162 9 месяцев назад

Great video

@finlay230 5 месяцев назад

excellent vid !!!

@johnnystanley4469 Год назад

Great content thanks for the info.

@DynomiteDieselTV Год назад

Glad it was helpful!

@brianp5579 Год назад

Good content!

@DynomiteDieselTV Год назад

Glad you enjoyed it

@parkerdanielleffew Год назад

Are you able to get an accurate drive pressure reading using the factory EBP and MAP?

@hallasnackbar1865 6 месяцев назад

If my truck is running clean and ego's stay below 1100 do I need to worry about drive pressure?

@birdshot3087 9 месяцев назад

Can you run compounds if they both have wategates? Sxe369 paired with a hx35w

@benwhittaker8630 Год назад

Will having the EMP gauge mounted near the base of the turbine housing, just after the flange, cause readings to skew at all?

@DynomiteDieselTV Год назад

Mounting it in the turbine housing, opposed to the manifold? No, it should not affect your readings.

@garrisonsmith9784 Год назад

what about VGT turbos lets say in a duramax? as far a drive pressure / boost ratio?

@DynomiteDieselTV Год назад

If it doesn't have compounds on it, I wouldn't be concerned with it.

@JohnDoe-ud2cc Год назад

Im doing a compound kit on my 12v right now. Do I wastegate the little turbo??? What keeps the little turbo from over spooling?

@daviddroescher 10 месяцев назад

1 of 2 ways to keep the high pressure turbo from overspending. 1 size it too big to over speed 2 wg inturnal or external.

@Dirt18 Год назад

Will drive pressure affect turbo surge? My truck starts a surge/swishing noise when it hits lock up. It’s an 04 5.9 Cummins that has a bd super b special that is a 64.5 compressor and a .80 housing. Not real sure of the turbine wheel size

@DynomiteDieselTV Год назад

Yes, and No.... There is no short, and simple, answer to your question. The biggest issue that we've seen, for that application, is actually a result of the ratios in the transmission and too large of an RPM drop causing the surge.

@Dirt18 Год назад

@@DynomiteDieselTV thanks for the reply. Really enjoy your videos

@DynomiteDieselTV Год назад

We're glad you're enjoying them!

@horsewhispererr Год назад

Well dang, now I need to check my system. I have k27 over a 369 on a vp truck with your 125hp injectors and I can get 1400egt real easy... wonder if the 27 is working too hard. Huh

@DynomiteDieselTV Год назад

Drive pressure will tell you the answer!

@matt1560 Год назад

Where do you hook up your drive pressure line to

@DynomiteDieselTV Год назад

One end goes in to the exhaust manifold, with a copper tube coil. The other end goes to some sort of boost gauge.

@ShainAndrews Год назад

Watch it again.

@matt1560 Год назад

Thanks for all yall videos it really helps a lot

@DynomiteDieselTV Год назад

No Problem, that's why we're here!

@TheProchargedmopar Год назад

👍💪

@njdevi11 Год назад

When you say 1:1 is that steady state or should it never go higher even during hard acceleration?

@DynomiteDieselTV Год назад

That's just a rule of thumb for when you're at WOT. We have actually learned that the majority of turbos are most efficient with drive pressure being slightly less than boost.

@njdevi11 Год назад

@@DynomiteDieselTV in that case I definitely need a bigger secondary.

@bcbloc02 Год назад

I found on a stock 5.9 but with big fuel the .70ar borg on the s300g ran very close to 1-1 boost to drive up to about 2200rpm then drive starts exceeding. Same turbo with a .80 spools 250rpm later but runs close to 5psi more boost than drive under most conditions and doesn’t cross over till 2500rpm.

@njdevi11 Год назад

@@bcbloc02 what turbine wheel?

@bcbloc02 Год назад

@@njdevi11 the s300g runs a 74x65 turbine