S400sxe

JTaylor said:
Wow! I didn't realize that your brother still owned his regular cab... Sharp pickup!
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He actually traded it in years ago but found the guy that bought it last year and he decided to sell the mfdt and buy it back to build up. Been a battle thus far to say least!
 
SmokinCAT said:
So ideally it should have the S500SX compressor?
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All the cast 8-blade Borg wheels are too heavy. At the rated RPM shown on the S488 map I would want to see another 90m/s of wheel speed on the exducer.

Drothgeb said:
What do you think about turbos like BD's 86mm, that's ~50 trim.
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It's 48-trim, and in my opinion too large for what the S400 turbine will support. Not to mention that 0.66AR cover can be improved in the diffuser area.
 
Smokem said:
<60 trim, seems to be wishful thinking it would produce a 5:1 rise in pressure unassisted.
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Even the maps are misleading? I was comparing the 64.5, 66, and 69 compressors. All hit borgs speed limit prior to 5.0 PR. The 66 and 69 both are at 66% efficiency at a max PR of 4.7, but the 69 flows 6-8 lbs more. Are lower trim compressors more capable when pushed past overspeed?
 
straight 6 roar said:
Even the maps are misleading? I was comparing the 64.5, 66, and 69 compressors. All hit borgs speed limit prior to 5.0 PR. The 66 and 69 both are at 66% efficiency at a max PR of 4.7, but the 69 flows 6-8 lbs more. Are lower trim compressors more capable when pushed past overspeed?
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Don't forget RPM and tip speed are only related by one thing....diameter. As diameter of a rotor increases more tip speed is generated with the same RPM input.
 
ChrisG88 said:
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Bringing this one back. I went with a 76SXE/96 in a 1.0 T4 housing. I had issues getting the truck to 60ft due to track conditions. I believe with a good 60 is will go 10.2s. Driveability is great boost 62 drive 75. This is a fuel only stock head/cam 5.9 so I am beyond happy with the results.
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Right lane from last night almost an identical pass with the 76sxe/87 1.1. Still trying to get my tune dialed in my rail is draining with higher rpms. I'm beyond impressed with it so far!



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Breedsrt said:
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Right lane from last night almost an identical pass with the 76sxe/87 1.1. Still trying to get my tune dialed in my rail is draining with higher rpms. I'm beyond impressed with it so far!



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Nice!

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DIESEL_POWER said:
So now that it's been proven these turbos make more power than rated, are you still skeptical ?
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Your understanding of how engine brake dynos operate must be on par with your understanding of how turbochargers work.
 
Breedsrt said:
af106b642b2aae126b13946c7ebe73f8.jpg


Right lane from last night almost an identical pass with the 76sxe/87 1.1. Still trying to get my tune dialed in my rail is draining with higher rpms. I'm beyond impressed with it so far!



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What is drive pressure like in that setup? Im asking because Ive killed 2 76sxe. 1 was 87 turbine and 1 was 96 turbine. Highest drive I saw was 80psi.

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ChrisG88 said:
What is drive pressure like in that setup? Im asking because Ive killed 2 76sxe. 1 was 87 turbine and 1 was 96 turbine. Highest drive I saw was 80psi.

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I monitored it when I was on the dyno with a compression gauge that I just threw on there till I got a permanent gauge set up. I haven't made a permanent setup with it yet to monitor when I make my drag passes. First few pulls on dyno were around 45. Cranked wastegate up and it was hanging around 65 drive with 55-58 boost. Haven't touched it since. Can't remember what size gate I'm using I'll try and find what size it is.


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Breedsrt said:
I monitored it when I was on the dyno with a compression gauge that I just threw on there till I got a permanent gauge set up. I haven't made a permanent setup with it yet to monitor when I make my drag passes. First few pulls on dyno were around 45. Cranked wastegate up and it was hanging around 65 drive with 55-58 boost. Haven't touched it since. Can't remember what size gate I'm using I'll try and find what size it is.


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I may have to invest in a gate. What did it make on the dyno?

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ChrisG88 said:
I may have to invest in a gate. What did it make on the dyno?

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Turbosmart hypergate 45.
TS-0506-1202 is the part #
Made 1008hp uncorrected at 1800us on 200overs.

New best time last Tuesday. Going to start cutting weight on truck now.

d35d0776c78278319c68f7aa7b5f04ae.jpg



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Didn't want to go anymore on power. Started dyno pulls at 3krpms still stock btm end


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Breedsrt said:
Turbosmart hypergate 45.
TS-0506-1202 is the part #
Made 1008hp uncorrected at 1800us on 200overs.

New best time last Tuesday. Going to start cutting weight on truck now.

d35d0776c78278319c68f7aa7b5f04ae.jpg



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Very nice! Is the gate a pain to setup? What does the truck weigh?

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