Any Feedback on the BD diverter valve?

[HEMI®Dart]

http://www.dieselperformance.com/newsletter/Track_Master_Divertor-_10-28-2010.pdf

 

[AH64ID]

I really don't see it being that effective, a divided turbine does allow for smoother and quicker spool by separating and directing the flow, but putting all the pressure into one side still puts the same amount of force on the turbine wheel, but now it's not even.



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[SRay]

By putting all six pulses into one side increases the flow velocity at lower engine rpm. Like trying to blow into a large pipe, the air is slower, but blow into a smaller pipe, the air is faster. Also by 14 psi, the diverter will be open and the turbo will work normally. I'm gonna get one to try as well.



Since it's a new product, not many people have it yet.

 

[AH64ID]

But as soon as they hit the turbine blade they hit the same large area (turbine wheel) and the pressure/flow drops.

They will also only work on large divided turbine's. . aren't most of the large frame turbo's non-divided?

I really don't see BD marketing something that doesn't work, but I am just not sure it will be worth the cost/fabrication effort.

 

[SRay]

I was gonna build myself one until I saw that BD now has one. It is hard to make any opinions unless we personally try the product ourselves or know someone that did. BD or whoever built the product likely already tested it. Otherwise word spreads very quickly nowadays if it's crappy product or a good product.



Our fall dyno day in Ontario took a beating on the internet after we tried a different shop with a complete different dyno that no one was used to or expected to it do. That was the shop's first ever dyno day and mistakes have been made and things happened that shouldn't have but it did. People were very quick to judge the shop as poor, with a possibility of not giving a second chance where as several of my buddies and I loved that dyno a lot.



Shawn

 

[AH64ID]

I agree that it wouldn't be marketed it if didn't have some effect, but I still wonder how much.

 

[SRay]

That's a question I'd like to know too. Unfortunately, I can't find a price on their website. Maybe product is not out yet.

I would like to try one and be able to post the results on TDR. If it works as good as they claim, then towing a large trailer should be much easier.

Shawn

 

[BD-Hector]

The diverter valve is more so for the people running a large turbo that takes a lot to spool up. Buy closing off one of the volutes the exhaust gases are forced to through the open side at a higher rate, thus spooling the larger turbo quicker. At 8 to 15#'s boost (depending on where it is set) the valve will then fully open, and the race is on.

 

[SRay]

BD-Hector: is there a price for the diverter? I have been interested in this product.



Shawn

 

[AH64ID]

The diverter valve is more so for the people running a large turbo that takes a lot to spool up. Buy closing off one of the volutes the exhaust gases are forced to through the open side at a higher rate, thus spooling the larger turbo quicker. At 8 to 15#’s boost (depending on where it is set) the valve will then fully open, and the race is on.

Do you have any video's of spool on the same truck/turbo with and without?

 

[BD-Hector]

SRAY you have a PM.



AH64ID I do not have a vid however I'll dig up some dyno reports in the next few days and post the results you you all to see.

 

[HEMI®Dart]

2010 Sema Global Media Awards Winner.



Best new Performance Street- Product:



Winner: COMP Performance Group, COMP Cams Phaser Adjustable Locks for the ’11 5. 0L Mustang



Runner Up: Holley Performance Products, Holley LS3/L92 Hi-Ram Modular Intake Manifold System, Carb & EFI



Runner Up: BD Diesel Performance, Big Daddy Race Turbo/Diverter Valve

 

[Tuesdak]

Bump. Surely someone has experimented with one of these on a 5.9 by now! They are on sale at Jegs at the moment. Short of a variable turbo with stand alone controller and related cost this is a bargain.

First off you get a large turbo as generally the factory gives you a small turbo to light early and isn't so good on the top end. The large turbo of course doesn't want to light at low RPM and will smoke when you throw fuel at it anyway. The BD diverter valve allows the large turbo to spool at a lower RPM. I would love to see some others results on the 5.9 with different turbo's.

My experience has been on light duty 6.2/6.5 GM diesel. The GM factory turbo flat chokes over 2200 RPM resulting in excessive ECT, no useful power, and excessive fuel consumption when pushed on 7% grades that go for miles while towing. I was getting 7.5MPG doing this. I then added a huge turbo that didn't start to light off till 2000 RPM. Sure it's a dog from the stop light, but, rolling 65 MPH while towing is where I needed the sustained power. I wound up getting 10.4 MPG on this 550 mile weekday route trip towing with the large turbo. Having power in the upper RPM and less cooling fan use helped. I also went from 43 MPH to 55 MPH on the grades. Not a bad deal - increasing power and MPG at the same time. The turbo and spool valve are paid for with fuel savings.

For Daily Driver use the 'spool valve', BD diverter valve, is awesome. Before I would get 2 PSI of boost at 2K RPM as the turbo started to light. After the valve install I was getting 10PSI at 2K RPM. (Keep in mind this IS a non-intercooled IDI 6.5 that peaks at 14 PSI factory when thinking about the boost number.) In effect I get the small turbo low RPM spool and then the big turbo pull like a fright train till redline and then some. (I am nuts running a 30 year old IDI to 4K RPM. But, they are cheap to replace when they go boom...) The downside is the valve holds exhaust heat in the engine. I have had trouble with ECT and cooking off the engine oil. (UOA with soot high and viscosity going from 40 wt to 50 wt.) Course it's AZ and gets to 121 degrees out - a good reason to switch to full synthetic engine oil. It also reduced that amount of smoke I get in town by spooling the turbo at lower RPM.

More in depth with install pics and video. Your MPG will vary as it is a different engine of course.

http://www.thetruckstop.us/forum/showthread.php?39716-Another-BD-Quick-Spool-Valve-Install-with-A-C

An idea of the turbo size change. Small factory GM turbo on the right, HX40II clone center, and left the huge ATT turbo I am using.

 

[Axekicker]

There was a write-up on the BD diverter-valve being installed in a '96 Dodge 2500 on page 138 of DieselPower magazine, May 2014 issue.
In the article they review the BD-DV installation in REB's 'Ace of Spades' '96 Ram.
Here's a video of the dyno-testing they did in the article..... followed by a quick road-run.

You've got to read the article to fully understand the 'dyno' parameters.
The first run is fuel-only... :01 to :13
The second run was on nitrous... :20 to :30
The third run was running dual-nitrous :36 to:53
The fourth run on the street is 1:01 thru 1:13.

The video doesn't tell you much about the BD-TDV itself...but does augment the magazine article...with some nice smoke-and-mirrors!

https://www.youtube.com/watch?v=GcB66fKEa1I

Seems a viable alternative to 'twins' for the big-single guys.

***********************************************************************

http://www.dieselperformance.com/newsletter/Track_Master_Divertor-_10-28-2010.pdf

 

[Gumby79]

If I am understanding this correctly it will turn my h1c×16cm into an 8cm till the relief pressure is hit. Then progressively open to a 16cm by 22 PSI.
If I upgrade to a HX 35 /12 ,then I would have a 6/12cm.
?how about hx40 what are the turbine housing values available ? At this time and for the foreseeable future I will be a stock power values 160 HP 400 TQ. Maby a 3200gov spring. But tuned to stock values at the stock RPMs. My purpose is for this device is more efficiency at highway speed more air in equals more fuel burned and hire Dynamic compression ratio we should result in more power from the same fuel.
Dreem Big Chisel Down To Reality

 

[dsldude]

Wondering if anyone has tried these yet.

 

[Tuesdak]

IMO, first do a camshaft in the Cummins. With a Hamilton 178/208 cam and a Stage 3 Garrett Ball bearing turbo even with a Manual trans I don't need a Spool Valve. Then you can decide if you want to do twins or big turbo and spool valve. In summery it works as advertised by winding the "big honking turbo" up at lower RPM. The sound of 'Hell trying to escape out the exhaust' is accurate.

Video. Sound is NOT the trans slipping: it's the turbo spooling up! Aka: Hell attempting to escape. When the smoke clears is when the turbo lights off. It smoked longer without the BD valve in part due to the tight converter GM used, 110 degrees out, small military emissions exempt 6.2 NA precups used on this budget surplus engine, AC on, and likely fan locked in some. I worked hard to get the smoke cleared up on this 3/4T Suburban, but, the precups wouldn't have it. (Well I did get it to the point of: Once spooled up it's pretty smoke free.) Just by going high stall converter I didn't need a Spool valve in my other 6.2, but, that's not an option for manual trans.



Updating link from above.
http://www.thetruckstop.us/forum/threads/another-bd-quick-spool-valve-install-with-a-c.39716/

For Grins the other fellow who put a BD spool valve on a 6.5 first:
http://www.trucktrend.com/cool-trucks/1306dp-built-not-bought-1993-chevy-k3500/

 

[dsldude]

After doing some reading it seems like a bad thing as the exhaust from 3 of the cyls would be trapped in the manifold and engine. This can't be good. I have a large turbo and was just curious.

 

[Tuesdak]

After doing some reading it seems like a bad thing as the exhaust from 3 of the cyls would be trapped in the manifold and engine. This can't be good. I have a large turbo and was just curious.

Respectfully, it's a Diverter Valve not a Blocker Valve. It diverts those 3 cylinders into the other 3 and all 6 cyl are blowing on the smaller part of the turbine.

You can see the valve angle here that is diverting rather than blocking the exhaust. The video @Axekicker provided above impressively shows it working on a Cummins.

 

[dsldude]

Ah That's good to know. So it will work that way even with a split t4 manifold ? Sorry for the ignorance. Just trying to exploit my options.