Re: Actual weight of fiberglass hood vs steel
[Re: hemienvy]
#2718917
11/24/19 04:07 PM
11/24/19 04:07 PM
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Joined: Jan 2003
Posts: 3,122 Auburn WA
Dave_J
master
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master
Joined: Jan 2003
Posts: 3,122
Auburn WA
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Another member may have a better answer but...
I don't have the answer on that hood but on my sons 67 Dart hood and fenders the "Street" weight glass are most likely as heavy or heavier than stock. His HEMI hood may be a bit lighter than the stock hood but not by too much, maybe 5 pounds or so. But his fenders are very heavy.
Race weight fiberglass is much lighter but will crack in use. Not may crack, it will crack. But it is an easy fix and you can add a layer of glass mat on the underside over the common crack areas.
Retired, US ARMY 1973-1994 ASE mechanic, Electrical 1994-1997 Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter 65 Formula S Cuda 78 Little Red Express Truck 98 Buick Regal (wifes car)
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Re: Actual weight of fiberglass hood vs steel
[Re: mopar dave]
#2719003
11/24/19 09:04 PM
11/24/19 09:04 PM
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Joined: Jan 2003
Posts: 20,765 A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,765
A collage of whims
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Never scaled it, but I'd guess about 35-40 lbs; plus that weight's in the worst place for a drag car. Hinges, latch, latch support stuff all have some weight. That said, I liked having hinges and a prop rod on one car, vs the racecar with a lift-off. Race car has a thin, barely-reinforced hood, enough so that I added some 1/2 x 1/2 angle to the fenders to support it. It does have some fine stress cracks in it, but then again it's over 30 years old.
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Re: Actual weight of fiberglass hood vs steel
[Re: gsmopar]
#2719020
11/24/19 10:06 PM
11/24/19 10:06 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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No matter what, it's worth it IMO in every case.
I do a lot of my own fiberglass, I have switched over to Carbon fiber/epoxy, a superior composite in many ways, it's not that much more expensive and the result is so worth it.
I think my 62 Lancer CF/Kevlar/sandwich hood weighs 11;bs?
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Actual weight of fiberglass hood vs steel
[Re: hemienvy]
#2719062
11/25/19 01:25 AM
11/25/19 01:25 AM
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Joined: Aug 2011
Posts: 2,857 Pattison Texas
CSK
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master
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Pattison Texas
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Unlimited, UP22 is the biggest piece of CR_P EVER !!!!
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Actual weight of fiberglass hood vs steel
[Re: hemienvy]
#2719108
11/25/19 10:35 AM
11/25/19 10:35 AM
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Joined: Oct 2007
Posts: 4,206 New York
polyspheric
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master
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New York
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Your body & paint guy will hate you, very few are straight as delivered.
Boffin Emeritus
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Re: Actual weight of fiberglass hood vs steel
[Re: polyspheric]
#2719113
11/25/19 10:53 AM
11/25/19 10:53 AM
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Joined: Jan 2003
Posts: 1,237 North Central, Indiana
Roughbird72
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,237
North Central, Indiana
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Been thinking about going to a glass hood myself, but not much of a selection out there for 71-72 Roadrunners.
72 Plymouth Roadrunner 11.08@123.25
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Re: Actual weight of fiberglass hood vs steel
[Re: racerx]
#2719165
11/25/19 01:42 PM
11/25/19 01:42 PM
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Joined: Aug 2003
Posts: 43,163 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,163
Bend,OR USA
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Thought they got there sh!t together ,I use to own one of there T/A hoods years ago and it wasn't bad. Some one had said they were under new owner ship and had corrected the problems. You are correct They are a lot better now since they change ownership and moved out of L.A. up to the high desert in Hesperia, CA. I've bought two of their lift off race weight 1970 Cuda hoods with the snorkel scoops, the first one was to tall for me to see around in the car so I sold it and bough the next size smaller and they both fit well and was finish very good, a lot better than Fibreglas Trends was when they where open and making parts
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Actual weight of fiberglass hood vs steel
[Re: hemienvy]
#2719205
11/25/19 03:15 PM
11/25/19 03:15 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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A long time ago, I weighed a factory 72 Challenger Rally hood... ~70-75 #
Factory f-glass T/A hood... ~40-45 #.
Also, the T/A springs are a little lighter than metal hood springs.
Last edited by Mopar Mitch; 11/25/19 03:16 PM.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: Actual weight of fiberglass hood vs steel
[Re: hemienvy]
#2719211
11/25/19 03:36 PM
11/25/19 03:36 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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IF, IF, IF the new hood is warped and doesn't line up with fenders, or whatever, how do they straighten a fiberglass piece ? If you cannot straighten it per se, the only solution I can see is to build up low spots and grind down high spots. Also keep in mind, polyester resin when curing contracts significantly, and the final cure takes more then hours. Its very difficult to account for that shrinkage on 3 dimensional pieces. Furthermore, once installed uneven heating when in use, IE the sun, engine, etc will cause further temporary distortion. All leading to why CF/epoxy has a much better reputation in use.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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