LT1 turbo dyno results
08-05-2008, 03:35 PM
#1
Registered User
Thread Starter
Join Date: Feb 2002
Location: Bridgewater, MA
Posts: 5,645
LT1 turbo dyno results
Finally, someone got some dyno results on one of my old log manifold kits. Check it out below (thread is in the FI section).
Two things to keep in mind: dynapack dyno (load bearing like a mustang dyno) and 11psi (despite it saying 12psi in his thread).
Color me very happy!
Max PSI : 12
Max RWTQ: 571
Max RWHP: 574
Engine
=============
Displacement......: 355 ci
Heads.............: Stock LT1 Castings, ported by Will Garza
Fuel Injectors....: 60# Mototrons
Compression Ratio.: 8.8:1 Diamonds
Cam...............: Custom Bret Bauer Turbo Cam
Throttle Body.....: Stock 48mm
Intake Manifold...: Stock Lt1
Exhaust...........: Log Manifold, 3" pipe all the way back to 3" Dynomax Muffler
Machine work......: Jim Pitcher-Chatham, NY 12037
Fuel System
===========
Stock intank
NOS Inline pump
Stock lines
Stock Fuel Pressure Regulator
Tuning
=======
PCM Tuning........: Untouched Mail Order MAF tune by Bryan Herter @ PCM4Less
Transmission
============
Transmission......: Stock T56 Six Speed
Rear Gear ratio
===============
Differential......: 4.10:1 Ford 8.8 w/GM 10 bolt 'legs'
Turbo Specifics
===============
Turbo.............: TC 76 w/MPS Wheel .96 A/R(www.forcedinductions.com)
Intercooler.......: 3" OBX air to air, front mounted
Hotside...........: "RealQuick" log manifold system
Coldside..........: Ebay 3" Aluminum pipe/coupler/Tbolt kit
Water/Meth........: NO
Boost controller..: NO
Wastegate.........: TurboSmart 38mm w/14Psi springs
Blow off valve....: Tial 50mm w/11psi spring
Dyno Facility
=============
SGP Racing - Veterans Memorial, Houston, TX
RPM/Boost/TQ/HP Measurements(I had him start at 3K)
================================================
3,000 = 05 psi = 400 = 240
3,250 = 06 psi = 370 = 245
3,500 = 07 psi = 400 = 260
3,750 = 08 psi = 425 = 320
4,000 = 10 psi = 465 = 355
4,250 = 11 psi = 500 = 400
4,500 = 12 psi = 571 = 475 (We think the Wastegate opened after this)
4,750 = 11 psi = 571 = 525
5,000 = 11 psi = 565 = 548
5,250 = 11 psi = 560 = 560
5,500 = 11 psi = 540 = 565
5,750 = 11 psi = 525 = 570
6,000 = 11 psi = 500 = 574
6,250 = 11 psi = 475 = 565
Air fuel Ratio was 11.x:1 during 3K to 6K, then briefly went to 12.x:1
Weather conditions at the time of dyno:
1pm today 97 degrees F, 40% humidity, 29.9 barometric Pressure, dew point 69F
Test was through full exhaust, no dumps/cutouts. Air filter on. At 12 psi during the first pull, the reducer coupler at the compressor outlet popped off. Dan took a break while I got under there to put the coupler back on with a good T-Bolt. To my horror, I saw the Air filter was GONE. I remembered hitting some retread crap the other day when the car in front of me just went over it and I didn't have time to react but I didn't consider it could have wacked that low slung air filter. I don't know how long I've been driving around, drinking dirt into my new wonderful motor, but it's been at least 2 days. I bought a 3" cast aluminum elbow I found in SGP Racings Box 'o pipes and put that on there. I was frustrated when SGP didn't have a 4" K&N filter but Dan had Moshi drive me over to Pep Boys to get one, free of charge.
With that all back on and buttoned up we took the second pull. The TQ/HP lines on the graph are sooo smooth. Not jittery or having spikes and dips. This is an untouched/altered mail order turbo tune! Good Job Bryan!
I asked Dan why it was that a wastegate with 14psi springs would open up at 12psi and he said he's sees it a lot with cars that don't have boost controllers. He recommended I get a Blitz electronic boost controller so I'm going to pick that up next paycheck!
Jon (aka "RealQuick"), good job on the hotside!
Two things to keep in mind: dynapack dyno (load bearing like a mustang dyno) and 11psi (despite it saying 12psi in his thread).
Color me very happy!
Max PSI : 12
Max RWTQ: 571
Max RWHP: 574
Engine
=============
Displacement......: 355 ci
Heads.............: Stock LT1 Castings, ported by Will Garza
Fuel Injectors....: 60# Mototrons
Compression Ratio.: 8.8:1 Diamonds
Cam...............: Custom Bret Bauer Turbo Cam
Throttle Body.....: Stock 48mm
Intake Manifold...: Stock Lt1
Exhaust...........: Log Manifold, 3" pipe all the way back to 3" Dynomax Muffler
Machine work......: Jim Pitcher-Chatham, NY 12037
Fuel System
===========
Stock intank
NOS Inline pump
Stock lines
Stock Fuel Pressure Regulator
Tuning
=======
PCM Tuning........: Untouched Mail Order MAF tune by Bryan Herter @ PCM4Less
Transmission
============
Transmission......: Stock T56 Six Speed
Rear Gear ratio
===============
Differential......: 4.10:1 Ford 8.8 w/GM 10 bolt 'legs'
Turbo Specifics
===============
Turbo.............: TC 76 w/MPS Wheel .96 A/R(www.forcedinductions.com)
Intercooler.......: 3" OBX air to air, front mounted
Hotside...........: "RealQuick" log manifold system
Coldside..........: Ebay 3" Aluminum pipe/coupler/Tbolt kit
Water/Meth........: NO
Boost controller..: NO
Wastegate.........: TurboSmart 38mm w/14Psi springs
Blow off valve....: Tial 50mm w/11psi spring
Dyno Facility
=============
SGP Racing - Veterans Memorial, Houston, TX
RPM/Boost/TQ/HP Measurements(I had him start at 3K)
================================================
3,000 = 05 psi = 400 = 240
3,250 = 06 psi = 370 = 245
3,500 = 07 psi = 400 = 260
3,750 = 08 psi = 425 = 320
4,000 = 10 psi = 465 = 355
4,250 = 11 psi = 500 = 400
4,500 = 12 psi = 571 = 475 (We think the Wastegate opened after this)
4,750 = 11 psi = 571 = 525
5,000 = 11 psi = 565 = 548
5,250 = 11 psi = 560 = 560
5,500 = 11 psi = 540 = 565
5,750 = 11 psi = 525 = 570
6,000 = 11 psi = 500 = 574
6,250 = 11 psi = 475 = 565
Air fuel Ratio was 11.x:1 during 3K to 6K, then briefly went to 12.x:1
Weather conditions at the time of dyno:
1pm today 97 degrees F, 40% humidity, 29.9 barometric Pressure, dew point 69F
Test was through full exhaust, no dumps/cutouts. Air filter on. At 12 psi during the first pull, the reducer coupler at the compressor outlet popped off. Dan took a break while I got under there to put the coupler back on with a good T-Bolt. To my horror, I saw the Air filter was GONE. I remembered hitting some retread crap the other day when the car in front of me just went over it and I didn't have time to react but I didn't consider it could have wacked that low slung air filter. I don't know how long I've been driving around, drinking dirt into my new wonderful motor, but it's been at least 2 days. I bought a 3" cast aluminum elbow I found in SGP Racings Box 'o pipes and put that on there. I was frustrated when SGP didn't have a 4" K&N filter but Dan had Moshi drive me over to Pep Boys to get one, free of charge.
With that all back on and buttoned up we took the second pull. The TQ/HP lines on the graph are sooo smooth. Not jittery or having spikes and dips. This is an untouched/altered mail order turbo tune! Good Job Bryan!
I asked Dan why it was that a wastegate with 14psi springs would open up at 12psi and he said he's sees it a lot with cars that don't have boost controllers. He recommended I get a Blitz electronic boost controller so I'm going to pick that up next paycheck!
Jon (aka "RealQuick"), good job on the hotside!
08-12-2008, 07:53 AM
#4
Registered User
Thread Starter
Join Date: Feb 2002
Location: Bridgewater, MA
Posts: 5,645
Thanks Marc. Yeah, good numbers for 11psi and a load bearing dyno... and he could easily pickup up anothwer 100-125rwhp with some better heads and an additional 5psi.
Not sure on the timing, I'll have to ask! Oh, and I think it is for a pump gas setup.
Not sure on the timing, I'll have to ask! Oh, and I think it is for a pump gas setup.
Thread
Thread Starter
Forum
Replies
Last Post
