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| Supercharged V8 Fiero! (Page 1/2) |
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mafv8
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AUG 28, 04:10 PM
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IMSA GT
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AUG 28, 04:26 PM
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I never understood pouring that much money into a beautiful supercharged motor yet run the stock Getrag transmission so you can't even appreciate the power......well, maybe one time before it explodes.
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cvxjet
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AUG 28, 04:48 PM
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With the small (Stock-size) tires the trany would only be at risk from high "R"s......there would not be enough traction to put any strain on the transmission.
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Dennis LaGrua
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AUG 28, 06:25 PM
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| quote | Originally posted by IMSA GT:
I never understood pouring that much money into a beautiful supercharged motor yet run the stock Getrag transmission so you can't even appreciate the power......well, maybe one time before it explodes. |
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Putting 533 hp and over 600 ft lbs of torque into a lightweight transmission designed for a maximum 200 ft lbs is a very poor design choice. One full throttle 1/4 mile run and its over, maybe even before that. The guy needs a modified F40 and even that might be a stretch. . BTW, I've met the owner of this Fiero and he runs drag radials.No way I would buy this car.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 08-28-2021).]
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Patrick
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AUG 28, 07:00 PM
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Figured it would be worthwhile to post a few images from that site before it disappears.
What is the purpose of the third tailpipe that branches off to the left? 
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RWDPLZ
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AUG 28, 07:31 PM
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That whole exhaust system is just a big WTF
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fieroguru
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AUG 28, 09:29 PM
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I saw the car at the 25th as well and noticed the girdle he put around the stock getrag diff. You can see the bottom side of it in one of the pictures above.
The 3rd exhaust pipe is likely capped off to keep it quiet during normal driving and then can be uncapped when we wants it to be roudy. Max power was likely with that 3rd pipe open.
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Australian
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AUG 29, 03:30 AM
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Before i clicked i thought strip it but then clicked and wouldn't change a thing. Exhaust has to go somewhere. [This message has been edited by Australian (edited 08-29-2021).]
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Patrick
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AUG 29, 04:42 AM
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| quote | Originally posted by fieroguru:
The 3rd exhaust pipe is likely capped off to keep it quiet during normal driving and then can be uncapped when we wants it to be rowdy.
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Interesting, thanks. Considering how much money was no doubt put into this car, I would've thought a more aesthetically pleasing solution could've been designed/fabricated for the "uncapped" exhaust. Looks rather weird to me the way it is.
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fieroguru
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AUG 29, 08:00 AM
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| quote | Originally posted by Patrick:
Interesting, thanks. Considering how much money was no doubt put into this car, I would've thought a more aesthetically pleasing solution could've been designed/fabricated for the "uncapped" exhaust. Looks rather weird to me the way it is. |
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I am sure it was added on after the fact when they figured out they were loosing 50 to 75 hp by going through the muffler.
On my LSF/F40/Turbo, the cutout was designed in from the beginning. From the turbo, it goes into a 3.5" downpipe with open tube muffler, Ys into dual 3" with one side capped with a valve and the other side goes through a 3" muffler. Both tubes exit in the stock location. Ideally the cutout when closed will be the proper distance from the Y to work as a helmholz resonator to further quite down the exhaust when running in single 3" mode.
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