turbokinetic
Member
- Joined
- Jan 29, 2008
Just got through dyno testing my 3.8 SFI Turbo in the 84 Century Olympia! Was quite an interesting experience!
The car was put through untold torture, because there was a problem with the RPM pickup on the dyno. It was pulled 5 times in a row before the problem was corrected. SO the final, recorded pull was on a very hot engine.
The ignition was starting to break up at high boost, but in spite of that - it layed down a 326 HP / 387TQ at 17 PSI at the wheels, on the chasses dyno.
I'm really pleased with it first for holding together for that many consecutive pulls, and for laying down that much HP even though the boost was low and the ignition was breaking up.
The dyno guy is very sure this engine has way more potential if thie ignition system was working better. The black trace for engine torque going all over the place is an indication of ignition breakup.
There was a SNAFU with the RPM pickup at first, and the car made 5 pulls that the machine did not record, before the pull that was recorded. It was bad because by that time the ignition system (and all other parts) were getting hot. Finally it cut out all together and backfired. After that, we let it cool off for several minutes and then it laid down the 326 HP pull.
OK here are the videos! I tried to keep the numbers in order but may have them out of order. I'm pretty sure the #6 is the one where we got a valid HP and torque reading. I think #3 is where the ignition was overheating and it backfired.
I'm going to get a hotter and more reliable Delco fast-start direct ignition system off a later model Buick 3800, as well as install an exhaust cutout before the muffler. Then will come back and dyno it again.
Enjoy - it was a blast and hope to dyno again soon.
Testing dyno setup:
http://www.youtube.com/watch?v=Ey3BtBDuwzQ
Pull # 1
http://www.youtube.com/watch?v=Kv8aN7opWTc
Pull # 2
http://www.youtube.com/watch?v=QLsSGDB_IKk
Pull # 3
http://www.youtube.com/watch?v=ZT-kfwp_lpU
Pull # 4
http://www.youtube.com/watch?v=FIR91F7KUs4
Pull # 5 (I goofed and did not record it.)
Pull # 6
http://www.youtube.com/watch?v=M7HL8u-SwV8
And once again here is the printout:
The car was put through untold torture, because there was a problem with the RPM pickup on the dyno. It was pulled 5 times in a row before the problem was corrected. SO the final, recorded pull was on a very hot engine.
The ignition was starting to break up at high boost, but in spite of that - it layed down a 326 HP / 387TQ at 17 PSI at the wheels, on the chasses dyno.
I'm really pleased with it first for holding together for that many consecutive pulls, and for laying down that much HP even though the boost was low and the ignition was breaking up.
The dyno guy is very sure this engine has way more potential if thie ignition system was working better. The black trace for engine torque going all over the place is an indication of ignition breakup.
There was a SNAFU with the RPM pickup at first, and the car made 5 pulls that the machine did not record, before the pull that was recorded. It was bad because by that time the ignition system (and all other parts) were getting hot. Finally it cut out all together and backfired. After that, we let it cool off for several minutes and then it laid down the 326 HP pull.
OK here are the videos! I tried to keep the numbers in order but may have them out of order. I'm pretty sure the #6 is the one where we got a valid HP and torque reading. I think #3 is where the ignition was overheating and it backfired.
I'm going to get a hotter and more reliable Delco fast-start direct ignition system off a later model Buick 3800, as well as install an exhaust cutout before the muffler. Then will come back and dyno it again.
Enjoy - it was a blast and hope to dyno again soon.
Testing dyno setup:
http://www.youtube.com/watch?v=Ey3BtBDuwzQ
Pull # 1
http://www.youtube.com/watch?v=Kv8aN7opWTc
Pull # 2
http://www.youtube.com/watch?v=QLsSGDB_IKk
Pull # 3
http://www.youtube.com/watch?v=ZT-kfwp_lpU
Pull # 4
http://www.youtube.com/watch?v=FIR91F7KUs4
Pull # 5 (I goofed and did not record it.)
Pull # 6
http://www.youtube.com/watch?v=M7HL8u-SwV8
And once again here is the printout:
