I have been having discussions with friends and the topic of the weight of my Fiero has come up. So am wondering what this is. not sure it really matters, but it is an 85GT and is all stock. Thanks
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04:20 PM
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Mike Gonzalez Member
Posts: 5093 From: Colorado Springs, CO. USA Registered: Jul 2001
Just for a couple of points of reference...........
Our Finale with a 4.9 and automatic with every option you can have including some that didn't come from the factory weighs 2,960# with 1/2 tank of gas.
Our race car with a Northstar and 5 speed with a full 6 point cage weighs, right now, 2,110#. We just had it on the scales. This varies, though, depending on how we have it set up and what we're going to do with it.
IIRC before we converted the '85GT into the Finale we weighed it as well and with a fresh 3.4L crate engine and an automatic, it weighed 2,680#. It did gain some weight with the 4.9 conversion (mostly due to the heavier transmission) and the Finale body kit with a LOT of extra sound deadening and many options made up the rest of the weight gain.
John Stricker
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05:46 PM
30+mpg Member
Posts: 4061 From: Russellville, AR Registered: Feb 2002
Our race car with a Northstar and 5 speed with a full 6 point cage weighs, right now, 2,110#. We just had it on the scales. This varies, though, depending on how we have it set up and what we're going to do with it.
Do you have a list of what you removed (maybe what's still on would be a shorter one)? Wondering if you had anything that could be added to this list.
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08:11 PM
30+mpg Member
Posts: 4061 From: Russellville, AR Registered: Feb 2002
Our race car with a Northstar and 5 speed with a full 6 point cage weighs, right now, 2,110#. We just had it on the scales. This varies, though, depending on how we have it set up and what we're going to do with it.
My car is gutted and it still is 100# overweight at #2400 dry. I am allowed to drop about #100 more but I am down to drilling holes in the hood supports etc. How did you get to #2100. Is the N* that much lighter than a 2.8. I even pulled out unused wires in the harnesses, scrapped off body seam sealer etc. Is the hood or trunk strong enough to remove the entire inner liner?
The SCCA re-classed the Fiero into E Production at #2500 (with driver) so I am prepping the car for that.
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01:12 AM
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Robert 2 Member
Posts: 2401 From: St Hubert Quebec Canada Registered: Jan 2006
I have the 85 GT with no air or cruise, 4speed 2.8. I've saved quite a bit of weight on the car. The headlight assemblies are gone replaced with the Kris Munson aluminum chassie lights, the top end of the motor is gone, replaced with a carb and aluminum intake, as is the snorkel system and a whole lot of plumbing and wiring, including a simplified exhaust. Not a huge weight loss but, I'll bet it's getting alot closer to 2500.
Arn
[This message has been edited by Arns85GT (edited 05-09-2009).]
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09:23 AM
jstricker Member
Posts: 12956 From: Russell, KS USA Registered: Apr 2002
I don't know what all you've done to yours, but I can list several things.
The interior, including dash, is all gone. The HVAC system is all gone. The firewall has a thin aluminum plate pop riveted over that opening. Lightweight race seats. Wiring harnes completely gone and just wires needed for the car there (it's heavier than you think). Tail lights remain, but headlights are gone and doors stripped and fixed closed. All the HVAC plumbing is gone. Trunk is gone. No fenderwells. Wilwood calipers (a lot lighter than stock). Door guts are still there, including the reinforcing beam, but door panels are gone. It was a sunroof car so we made a fiberglass insert that's very light to replace the glass so it would be closed for aero improvements. There are some lightening holes drilled in non structural areas, but not many. All of the bumper reinforcements are gone, the front and rear fascias are just the plastic shells. Those assemblies are heavy. Back window is gone and replaced with Lexan, that helped more than I thought it would. Hood is extensively lightened with the air ducting we have. Rear deck is lightened because it's a lift off now. Hinge boxes are gone for the same reason. The only glass left is the windshield.
We pretty much stripped the car to nothing and put back only what we absolutely positively HAD to have.
I heard from a couple of autocrossers that a Fiero with the top completely removed and prepped for autocross only has weighed in as light as 1900#, but that's really pushing it. We can probably lose another 40 or 50#, but that's about all.
John Stricker
Edited to add that yes, if you go to a lift off/pinned hood, you can pull all of the inner support off the front and rear decklids. I wouldn't do that and expect it to hinge like stock. Our front hood is still hinged, but half of it is gone already with the NACA duct. .
quote
Originally posted by SCCAFiero:
My car is gutted and it still is 100# overweight at #2400 dry. I am allowed to drop about #100 more but I am down to drilling holes in the hood supports etc. How did you get to #2100. Is the N* that much lighter than a 2.8. I even pulled out unused wires in the harnesses, scrapped off body seam sealer etc. Is the hood or trunk strong enough to remove the entire inner liner?
The SCCA re-classed the Fiero into E Production at #2500 (with driver) so I am prepping the car for that.
[This message has been edited by jstricker (edited 05-09-2009).]
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05:41 PM
jstricker Member
Posts: 12956 From: Russell, KS USA Registered: Apr 2002
I have done a lot of the same but I cut the bottom of the trunk out, the lower 3" of the rear bumper cover (the steel is all gone in the back) and then made the trunk floor flat on the bottom to stop the parachute effect back there. Is your trunk wide open like in the photo? What keeps the bumper cover on now? I would image it would catch a lot of air back there.
I will get some photos of mine in a few days which will be easier to explain. I have no side windows, dash (other that a gauge panel) or ac parts at all. I also moved my battery up front and removed all the lights and wiring there as well. The bottom of the hood and trunk is next. I am thinking of leaving a minimum of a skeleton to leave the hinges with no springs on the rear. How hard does that layer peel off? Am I better separating the two pieces and then cutting it or cutting it off in pieces?
[This message has been edited by SCCAFiero (edited 05-10-2009).]
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08:43 PM
Robert 2 Member
Posts: 2401 From: St Hubert Quebec Canada Registered: Jan 2006