GSL SE Turbo (underway)
GSL SE Turbo (underway)
Pulled my baby out of storage on the weekend & pulled the motor out today getting ready for a turbo swap. Progress would be slow because I work 5 to 6 days a week. Will keep you guys posted.
Tweakit.net mistake
Got my blowthrough plenum from www.tweakit.net & was doing some measurements & found the holes don't line up. If you look at the picture, the plenum measures 70mm across. Now the IDA throttle body measures at 65mm. Very well pissed off about this & I waited 6 weeks for this part. Anyway gotta get it fixed myself. Don't wanna wait another 6 weeks. For those of you that order from Tweakit.net, be aware.
Motor
I am going EFI not carbed.
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Info on the motor:
13B 4-Port (Old School Plates - Resurfaced) Street Ported Intake
GSL-SE Rotors 9:4 Compression (Lightened), 3mm RA - Super Apex Seal
GSL-SE Rotor Housings (New) 5mm Overlap Race Exhaust Ported
Harden / Modified Stationary Gears (Front-Rear)
Three-Window Bearings (Front-Rear)
Oil Pressure Regulator Modification (Front-Rear)
Thermal Pellet Modification
Racing Beat Under Drive Aluminum Pulleys (Alternator / Main Crank)
Internal Springs Cryogenic Treated
13B 4-Port (Old School Plates - Resurfaced) Street Ported Intake
GSL-SE Rotors 9:4 Compression (Lightened), 3mm RA - Super Apex Seal
GSL-SE Rotor Housings (New) 5mm Overlap Race Exhaust Ported
Harden / Modified Stationary Gears (Front-Rear)
Three-Window Bearings (Front-Rear)
Oil Pressure Regulator Modification (Front-Rear)
Thermal Pellet Modification
Racing Beat Under Drive Aluminum Pulleys (Alternator / Main Crank)
Internal Springs Cryogenic Treated
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Very nice work! That's a very nice plenum.
Once concern though. I think you have going to have a hard time making the car perfectly drivable with that intake setup and the LT-8s. It's taken a long time to get my car with the big throttle body to drive nicely off of idle. However your throttle bodies are below the plenum and thus the vacuum signal is going to be very, very erratic and will shoot to atmospheric when the throttle is cracked. This won't leave you with very much resolution if tuned in speed density mode. You'll likely find yourself switching to Alpha-N (TPS referenced). In that case, the throttles need to be set up with a full range TPS (which presumably, they are).
Once concern though. I think you have going to have a hard time making the car perfectly drivable with that intake setup and the LT-8s. It's taken a long time to get my car with the big throttle body to drive nicely off of idle. However your throttle bodies are below the plenum and thus the vacuum signal is going to be very, very erratic and will shoot to atmospheric when the throttle is cracked. This won't leave you with very much resolution if tuned in speed density mode. You'll likely find yourself switching to Alpha-N (TPS referenced). In that case, the throttles need to be set up with a full range TPS (which presumably, they are).
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thecody59
1st Generation Specific (1979-1985)
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Jan 23, 2016 11:52 AM




