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Old 05-25-2020, 05:25 PM
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Default BD Exhaust manifold kits

Has anyone tried the BD kit?? Seems like it may help on airflow to the turbo. For all the work that people do for a turbo swap it seems like adding a tad more $$$ change into the mix could add some decent results.
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Old 05-25-2020, 05:43 PM
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What turbo

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Old 05-25-2020, 06:10 PM
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I'd use a stock or modded stock VGT myself. I wasn't sure if anyone went down this road with a customer or for their own truck.
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Old 05-25-2020, 11:41 PM
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They don't make them for the 2016 i believe. Actually they make one for one side and not the other. The machine shop was looking then up and that's what they found... I was also told they don't make much difference.
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Old 05-26-2020, 03:30 AM
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BD just released the 2015+ kits.
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Old 05-26-2020, 06:34 AM
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Originally Posted by HeavyAssault View Post
BD just released the 2015+ kits.
well hot damn, hes right, they did.

https://us.bddiesel.com/products/6-7...31452435382341
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Old 05-26-2020, 07:09 AM
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While the 11-14 kits have been out, I haven't seen any reports of shops/people installing them. As anything with a motor increased airflow or the "smoothing" of airflow tends to help a motor.



I figured there had to be someone who dropped the 11-14 kit it with a build or when they swapped around turbos.



I've been quote happy with my 2015, just thinking of giving the OE turbo a mild mod/rebuilt figured with all that stuff off.....why not go a little deeper.
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Old 05-26-2020, 07:15 AM
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Everything exists now to do top to bottom on 6.7 motors if you choose to rebuild....

Numerous piston options, Wagler and Carrillo rod options, D&J now has a rod option with 35mm wrist pins.

Numerous head stud and main stud options, numerous valvetrain options. Several Billet cam options.

MPD makes billet girdles and main caps.

Odawgs has the ported intake manifolds and now BD has drop in exhaust manifolds.

Numerous single turbo options, compound kits, H&S has triple kits....

Modified body injectors up to 300% now exist....

So many other brands and parts that would take too long to list in here....

the 6.7 aftermarket world really has opened up a lot now.
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Last edited by Black AOD; 05-26-2020 at 07:17 AM.
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Old 05-26-2020, 08:33 AM
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Quote:
Originally Posted by Black AOD View Post
Everything exists now to do top to bottom on 6.7 motors if you choose to rebuild....

Numerous piston options, Wagler and Carrillo rod options, D&J now has a rod option with 35mm wrist pins.

Numerous head stud and main stud options, numerous valvetrain options. Several Billet cam options.

MPD makes billet girdles and main caps.

Odawgs has the ported intake manifolds and now BD has drop in exhaust manifolds.

Numerous single turbo options, compound kits, H&S has triple kits....

Modified body injectors up to 300% now exist....

So many other brands and parts that would take too long to list in here....

the 6.7 aftermarket world really has opened up a lot now.
Carrillo is about to start testing a new forged piston for street trucks. Different alloy so it takes heat cycles better. I think I know I getting the first set ever....Lead Foot Diesel has been using these manifolds a lot.
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Old 05-26-2020, 08:43 AM
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Carrillo is about to start testing a new forged piston for street trucks. Different alloy so it takes heat cycles better. I think I know I getting the first set ever....Lead Foot Diesel has been using these manifolds a lot.
I heard about that. That should be interesting.

The 2020 motors have steel pistons now too. And they utilize a 1/2" longer connecting rod since the wrist pin eye was moved on the piston. So I wonder if anyone will make the 2020 rod in the aftermarket so you could run a 2020 steel piston? That would be interesting to see.
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Old 05-26-2020, 08:46 AM
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Damn....didn't know about the ODawg manis.....this is going to get expensive...
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Old 05-26-2020, 08:55 AM
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Originally Posted by Black AOD View Post
I heard about that. That should be interesting.

The 2020 motors have steel pistons now too. And they utilize a 1/2" longer connecting rod since the wrist pin eye was moved on the piston. So I wonder if anyone will make the 2020 rod in the aftermarket so you could run a 2020 steel piston? That would be interesting to see.
Haven't heard of that yet, they are doing a hybrid kit too, moved the wrist pin location for better crank angle.
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Old 05-26-2020, 08:58 AM
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Damn....didn't know about the ODawg manis.....this is going to get expensive...
We looked into them, don't think they were out yet . My machine shop is going to port mine, I'll decide later if it's worth going to Odawgs
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Old 05-26-2020, 09:09 AM
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Odawgs have been out for quite a while.

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Old 05-26-2020, 09:19 AM
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I wonder what the breaking point will be with the stock 2020 short blocks? On paper they “look” to be a very cost effective upgrade.
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Old 05-26-2020, 09:33 AM
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Quote:
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I wonder what the breaking point will be with the stock 2020 short blocks? On paper they “look” to be a very cost effective upgrade.
wondering this as well.

I heard the oil pump is external to the block now too on 2020s
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Old 05-26-2020, 10:14 AM
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I'm more interested in their cooling capabilities. Ie radiator sizing


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Old 05-26-2020, 11:48 AM
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Quote:
Originally Posted by HeavyAssault View Post
While the 11-14 kits have been out, I haven't seen any reports of shops/people installing them. As anything with a motor increased airflow or the "smoothing" of airflow tends to help a motor.



I figured there had to be someone who dropped the 11-14 kit it with a build or when they swapped around turbos.



I've been quote happy with my 2015, just thinking of giving the OE turbo a mild mod/rebuilt figured with all that stuff off.....why not go a little deeper.
I bought a set for my 2011. Turbo started surging/fluttering under steady throttle up a hill with or without a trailer at 52-54 mph just like it's laid out in TSB 11-12-14. So while I'm in this far replacing to an updated '14 turbo and WW2 (make fun of me if you wish) I was going to do the studs and manifolds for reliability after hearing about them being fairly common to break and hopefully some performance (wasn't too much more expensive than stock replacements). I asked BD about what to expect and got a nondescript:
"Our manifolds improve on the reliability of the Ford manifold, while improving the radius’s from each cylinder."
It will be mid June before I get them in the truck but they look good in person. I can let you know more after install. I don't think I will be able to pinpoint specifics on performance of the manifold upgrade though since I have more changes going on at the same time.
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Old 05-26-2020, 03:28 PM
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Quote:
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wondering this as well.

I heard the oil pump is external to the block now too on 2020s
The crank gear still from the looks of it, looks the same though.
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Old 05-26-2020, 06:01 PM
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The crank gear still from the looks of it, looks the same though.
I know, right. Youd think they have learned by now.

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Old 05-26-2020, 06:14 PM
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I know, right. Youd think they have learned by now.

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They fail in stock form?
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Old 05-26-2020, 08:35 PM
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They fail in stock form?
Not commonly but some.

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Old 05-28-2020, 05:08 AM
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Quote:
Originally Posted by 6.7Bison View Post
I bought a set for my 2011. Turbo started surging/fluttering under steady throttle up a hill with or without a trailer at 52-54 mph just like it's laid out in TSB 11-12-14. So while I'm in this far replacing to an updated '14 turbo and WW2 (make fun of me if you wish) I was going to do the studs and manifolds for reliability after hearing about them being fairly common to break and hopefully some performance (wasn't too much more expensive than stock replacements). I asked BD about what to expect and got a nondescript:
"Our manifolds improve on the reliability of the Ford manifold, while improving the radius’s from each cylinder."
It will be mid June before I get them in the truck but they look good in person. I can let you know more after install. I don't think I will be able to pinpoint specifics on performance of the manifold upgrade though since I have more changes going on at the same time.



Thank you. Sounds like the drive ability will be where you get the improvement. Maybe monitor the PIDs a tad more to see what changes. I know in the past my mods like this made the turbo much more driveable and had better spooling. Airflow makes it all go....
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Old 05-28-2020, 07:47 AM
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HeavyAssault,

Any specific PIDs you want me to compare? I'm struggling thinking of one that might tell me how much better the manifold is flowing. EGTs maybe? There is a back pressure measurement but I believe that is across the ***.
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Old 05-28-2020, 08:10 AM
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I don't know where a 2011 pulls EBP so I can't help there. I would say it's not going to be just one overall.



Fuel Pressure, Boost, EGT, EBP (if location is known), MAF. The Boost/EBP ratio would be good data to collect. If 2011 EBP is pre-turbo that would be awesome.



Post mods I'd say if the turbo/motor was more responsive there may be a drop across the board to which I'd say that shows a flow path improvement.


I know I'd pull up whatever PIDs seem reasonable with whatever device you are using. Then just data log the info. Maybe down the road there could be some targeted PID collection while dropping others off.



I got the new CTS3 which gives me plenty of data to follow. You are doing alot of mods. I doubt we could say XXXX changed it the most but the overall package can be shown to have an significant impact. Sure people want to buy one thing and get the best result. People need to realize there's more than one thing that makes great gains.
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Old 05-28-2020, 08:20 AM
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Doubt you see any tangible difference. The runner lengths didn't change hardly

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Old 05-28-2020, 08:24 AM
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I'd agree on a mainly stock truck. With any significant mods to the airflow path, there's going to be additional changes made....is it 100HP? No, but there's going to be change made in performance.


I liken my experiences to my 6.0L that got the basic mods done. It drove amazingly, had impressive pedal response, HP & TQ improved, and had decent MPGs.



Biggest changes for my 6.0 were with the ported intake manifold, P-Max w/single plane wheel, modded y-pipes.
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Old 05-29-2020, 01:53 PM
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Quote:
Originally Posted by HeavyAssault View Post
I don't know where a 2011 pulls EBP so I can't help there. I would say it's not going to be just one overall.



Fuel Pressure, Boost, EGT, EBP (if location is known), MAF. The Boost/EBP ratio would be good data to collect. If 2011 EBP is pre-turbo that would be awesome.



Post mods I'd say if the turbo/motor was more responsive there may be a drop across the board to which I'd say that shows a flow path improvement.


I know I'd pull up whatever PIDs seem reasonable with whatever device you are using. Then just data log the info. Maybe down the road there could be some targeted PID collection while dropping others off.



I got the new CTS3 which gives me plenty of data to follow. You are doing alot of mods. I doubt we could say XXXX changed it the most but the overall package can be shown to have an significant impact. Sure people want to buy one thing and get the best result. People need to realize there's more than one thing that makes great gains.
I can't find where that specific PID is being pulled from but its never gotten above 1 psi so there is no way that is drive pressure unless my truck is a miracle. I've found *** inlet pressure but from what I remember from fluids mechanics that won't tell us anything about the improvements made upstream. I will log it just in case we think we can learn anything from it's results.

I'm using a Car Scanner Pro app and a Micro Mechanic Bluetooth OBDII. Got the bluetooth connector as a grab-bag Christmas present and paid $8 for the app and I must say I am very happy with it especially for what I have in it.

I'm going to do a log of boost, fuel rate, fuel pressure, egt, vgt position, *** inlet pressure, and maf this afternoon. I did one this morning for intake air temp, boost, maf, and cac temp for the compressor wheel comparison. I will do another one involving ambient temp, intake temp, cac temp, egt, egr temp, and egr rate as I'm doing some thermal coating as well and want to see how my temps are effected.

I agree that it makes little sense to go in and swap out just the exhaust manifolds on an otherwise stock truck. But if you need to replace them anyway or have other modifications it would play well with, every little bit helps.
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Old 06-01-2020, 08:30 PM
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Default BD Exhaust manifold kits

I did not read all this but I bought a set as I was putting the motor back together and I found out the stock ones were not true anymore. Did not know that but I suppose when Cody had truck getting compounds that pass side was changed to 16+. Anyway I got lucky and BD sold me the new pass side while it was still a R&D part. They are beast compared to stock.

Believe it or not had more clearance on head studs than factory.
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Old 06-02-2020, 03:56 AM
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Looks like a great piece!
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Old 06-02-2020, 08:53 AM
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Quote:
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I did not read all this but I bought a set as I was putting the motor back together and I found out the stock ones were not true anymore. Did not know that but I suppose when Cody had truck getting compounds that pass side was changed to 16+. Anyway I got lucky and BD sold me the new pass side while it was still a R&D part. They are beast compared to stock.

Believe it or not had more clearance on head studs than factory.
Are you the guy that bought Cody Gorman's regular cab truck AKA Morgan Primm's 2011 white regular cab ?
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Old 06-02-2020, 07:06 PM
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Are you the guy that bought Cody Gorman's regular cab truck AKA Morgan Primm's 2011 white regular cab ?


Yup
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Old 06-04-2020, 12:27 PM
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Yup
Hows that thing doing? New motor right?
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Old 06-09-2020, 08:34 PM
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Hows that thing doing? New motor right?


New motor and trans, slowly going back together and redoing somethings when I have time. Now have to pull trans again and send back. Thought about trips but just need to get it back together as it is covering half my shop.
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Old 06-09-2020, 08:57 PM
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New motor and trans, slowly going back together and redoing somethings when I have time. Now have to pull trans again and send back. Thought about trips but just need to get it back together as it is covering half my shop.
Nice. Is it still the same turbos and fueling as it had when You bought it ?

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Old 06-10-2020, 09:10 PM
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Yes
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Old 06-23-2020, 11:00 AM
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Here’s what I can determine about the exhaust flow improvements of the BD manifolds.
The goal is to retain exhaust energy (heat, velocity, and pressure) before the turbo, this will improve efficiency and response. So everyone is aware I replaced my turbo with an updated steel bearing SST, a wicked wheel 2, the BD manifolds, and coated the exhaust components in Zybar all at the same time. The only modification I had for both before and after was the S&B Open Air intake. Still emissions equipped and running factory tuning.
I haven’t found a good way to export the numbers off my phone so I am staring at data log graphs and reporting numbers to the best of my abilities. I’m going to do this a bit backwards and give the after numbers first in their peak form. This is because the after numbers did not reach the same peak of the before numbers for direct comparisons of each variable.

After:
Peak:
Boost 11 psi, inst fuel rate 0.11 gpm, commanded fuel rail pressure 17000 psi, commanded vgt position 30%, EGT 500 F, Fuel power 75 hp, MAP 27 psi, MAF 450 kg/hr, vgt position 45%

Before:
Peak:
Boost 14 psi, inst fuel rate 0.17 gpm, commanded fuel rail pressure 22000 psi, commanded vgt position 32%, EGT 575 F, Fuel power 120 hp, MAP 31 psi, MAF 650 kg/hr, vgt position 37%

Before:
Comparable fuel power:
Boost 10 psi, inst fuel rate 0.11 gpm, commanded fuel rail pressure 17000 psi, commanded vgt position 35%, EGT 500 F, Fuel power 75 hp, MAP 27 psi, MAF 400 kg/hr, vgt position 50%

While I recorded some higher peaks before, there doesn’t seem to be much difference in similar situations. I am flowing slightly more air and the vgt position is slightly more open. The MAF difference could have several reasons. The vgt is more telling as the vanes don’t need to be actuated as much to maintain the airflow requirements. What I don’t know is how much of this is due to a more efficient compressor wheel (lower required turbo shaft speeds to supply the same air) or the flow improvements in the manifold (higher retained exhaust velocity reaching required shaft speeds easier). From all this I gather that there are probably improvements being made even at lower power levels. It’s just really hard to quantify exactly how much and from what component. My best guess makes me lean to the conservative answer of “minimal performance improvements”. I wish I had a back pressure gauge that made sense and a better placed EGT sensor for some more direct before and after. Back to back dyno runs would also be helpful.

Overall I am happy with my upgrades. I believe they all contribute to added reliability for my truck while also improving performance and efficiency. Since I was going to be this deep into the engine valley replacing a surging turbo, I was going to do as many other upgrades in this area as I could that made sense for how I use the truck. I do not want to be that far into the engine valley again for a long time. I’m still gathering data for myself to see if I can put numbers behind the seat of the pants improvements I can feel.
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2011 F-250 XLT CC SB 4x4 6.7L Powerstroke
~109,000 miles
Truxedo tonneau cover, Linex bed liner, Blue Ox turnover ball, Weathertech floor mats, Carhartt seat covers, S&B Open Air Intake w/ prefilter
  #38  
Old 06-26-2020, 03:24 AM
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HeavyAssault HeavyAssault is offline
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Awesome to see there's more info being collected.
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