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Joes924Racer · Posted: Mon May 20, 2013 8:22 am Post subject: Lightend rear bumper.

Took out 11 3 3/4 inch holes. Ill weigh the pieces later. Cool look huh.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

You'd have been better off leaving the subwoofers and their enclosures out if you're concerned about weight. That probably didn't lose you as much as you thought, but whatever.

Also, don't use that "harness bar" you made. There's one available for sale on Craigslist in Vancouver. Though you would be better off putting at least a 4-point bar in the car if you're going to use a harness on the street with race seats. The seats and harness will hold you upright and if you roll it you'll end up like Jayne Mansfield. Also without a HANS device your head could try to leave your body ala Dale Earnhardt.

Bottom line? Use ALL of the safety gear or none of it.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Joes924Racer · Posted: Mon May 20, 2013 2:53 pm Post subject:

I could turn it into a 4 point.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Tue May 21, 2013 4:07 am Post subject:

Wht do u guys think of that bumper, it looks like a piece of swiss cheese.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

flosho · Posted: Tue May 21, 2013 7:12 am Post subject:

I think you should look to purchase a fiberglass or CF one if you're really concerned about weight.

I believe the real purpose of those holes is from some Honda folks. The faster drag cars that had stock rear bumpers where it would basically act like a parachute from the air coming under the car and catching in the bumper. If you've ever been to the track, you will so a ton of Civics/Integras/Etc without rear bumpers or with these speed holes.

Half of them may just do it without any noticeable affect, but the fast ones it can be beneficial.
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[This Space For Rent]

Joes924Racer · Posted: Tue May 21, 2013 8:21 am Post subject:

Oh ..what ive seen is a few early 911s that have done this.
Looks pretty cool so I followed suite.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Tue May 21, 2013 10:58 am Post subject:

Youd think i spent some cash on getting the holes done like that but no i did it myself ...jigsaw,metal blade, bench and a vise.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Tue May 21, 2013 10:59 am Post subject:

Been looking at my 931 bumper and it looks different from the 79.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

snakoil · Joined: 09 Feb 2010 Posts: 362 Location: Montreal, Canada

is it just me or the holes are not always sme distance from each others and maybe not top align.

if you are happy with the results I am happy for you...but i would have gone with a fiberglass version.

why do i keep remembering simpsons when someone makes speedholes
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1979 924 NA

Joes924Racer · Posted: Wed Sep 04, 2013 6:03 pm Post subject:

thats funny @snakeoil ... yea I want a fiberglass
one or maybe a 944 one.

Though heres one end of my holy bumper in sealer.
and the other end also.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Joe, you might as well have left the bumper off and just glued foam in place, shaped it and covered it in fiberglass. That would have been lighter and just as strong.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Joes924Racer · Posted: Mon Nov 18, 2013 7:51 am Post subject:

The holy bumper lol. inside was painted black and after some serious masking...theres some silver base on it.

What if I put some red lights on each outside end.
Theyd turn on during breaking.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Sat Nov 23, 2013 3:29 pm Post subject:

Its light & its holy.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

I have done the same with a euro bumper:

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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

Joes924Racer · Posted: Sun Nov 24, 2013 5:25 pm Post subject:

Looks nice it's a good look. .. ... Looks bad-ass.
Got er done & on the car.

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.