TN BB First altitude run from 7000ft-8500ft - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 41 (permalink) Old 09-09-2007, 02:05 AM Thread Starter
<----Colin Banks
 
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TN BB First altitude run from 7000ft-8500ft

IT WORKS!!!! And does it sing a pretty tune.
I made an 8 mile run from my house at 7000ft to the summit that is at 8500ft.
this thing really pulls hard once lit. It is fairly laggy off idle and you need to give it some good throttle to get it going. Nothing I really find worth bitching about though.
This run I made is all uphill to the summit and EGT's were all over the board depending how I drove it. OD on at a speed of 70 and boost was about 8psi and EGT's were steady at 1100. OD off at the same speed same grade was about 12 psi and 800-850ish. these are estimates not hard numbers because I was all over the place with the throttle but I will say it cleans up all the smoke under full throttle once it builds good boost.
On a full out run I was able to hit 1450 EGT with boost about 21psi which I saw the EGT actually drop while still full tilt on the go pedal for about 15 seconds. I will do far more testing and posting video and other results but this was a dry run to make sure all the parts are working right and nothing is leaking or loose. Here are the specs on the EX:
2002 EX
TN BB with high flow outlet
DP 80 econo tune
custom open element intake
stock auto
35 inch tires with 3.73 gears
stock exhaust-------> only on because wife has a friend with a 4 inch on her EX and the drone is bad.

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post #2 of 41 (permalink) Old 09-09-2007, 02:16 AM
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Re: TN BB First altitude run from 7000ft-8500ft

Is the 21psi your normal boost because in my 80e I can get about 28psi but you are a lot higher than me so that may be the difference.

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post #3 of 41 (permalink) Old 09-09-2007, 03:49 AM
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Re: TN BB First altitude run from 7000ft-8500ft

Those numbers are really low compared to my 38R at altitude.

Curtis
2002 F-250 PSD
Gambling with 250/200's on PMR's.
478hp/851tq on Haller's dyno - 7/28/12
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post #4 of 41 (permalink) Old 09-09-2007, 03:58 AM
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Re: TN BB First altitude run from 7000ft-8500ft

Maybe I missed it elsewhere, but are you using a 1.0 exhaust housing?

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post #5 of 41 (permalink) Old 09-09-2007, 04:10 AM
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Re: TN BB First altitude run from 7000ft-8500ft

In another post it was said that the TN BB has a 1.0 housing.

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post #6 of 41 (permalink) Old 09-09-2007, 05:02 AM
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Re: TN BB First altitude run from 7000ft-8500ft

Good. I can't wait to get mine.

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post #7 of 41 (permalink) Old 09-09-2007, 05:40 AM
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Re: TN BB First altitude run from 7000ft-8500ft

Nice!

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post #8 of 41 (permalink) Old 09-09-2007, 06:17 AM Thread Starter
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Re: TN BB First altitude run from 7000ft-8500ft

Boost is a bit low and I can bet it is the actuator rod for the WG. I am going to tweek it tomorrow but overall it is great. The turbo spools well and I bet once I do the rod it will be much better.

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post #9 of 41 (permalink) Old 09-09-2007, 06:28 AM
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Re: TN BB First altitude run from 7000ft-8500ft

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Originally Posted by mattymx View Post
Boost is a bit low and I can bet it is the actuator rod for the WG. I am going to tweek it tomorrow but overall it is great. The turbo spools well and I bet once I do the rod it will be much better.
I figured it had to be something. The TN BB turbo should at least perform the same as the 38R. Check for boost leaks also, that 1450 EGT temp is at least 100 degrees higher than it should be with your 35" tires and 3.73 gears. You shouldn't be getting much lag at altitude with that turbo. Mine has about the same bottom end spoolup as the stocker.

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post #10 of 41 (permalink) Old 09-09-2007, 06:32 AM Thread Starter
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Re: TN BB First altitude run from 7000ft-8500ft

it is a little softer off the bottom end than with the stocker but as I said it is nothing to complain about. It is really minimal. I also have the red boost tube hooked up to an IC clamp so the actuator sees no boost. I should have done the rod while the turbo was on my bench. Any good tricks to tighten it up while it is already mounted?

But for anyone wanting this turbo that lives at altitude, have no worries. It looks to be the correct housing. I will get some video in the morning-afternoon and post it.

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