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Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

I picked up some Weltmeister 250 lb springs. I didn't realize they were progressive, does anyone know which way is up when they are installed? They look like the picture below. Do the more open coils get installed facing down as in the picture? This would make sense to me.

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1987 951 - M193 Version for Japan

-nick · Joined: 16 Nov 2002 Posts: 2699 Location: Cambridge, MA

I have the compressed springs on the bottom. There may be an argument for having them on the top, as it would be slightly less unsprung weight (lots of coils moving at the bottom, as opposed to fewer coils moving at the bottom). I don't really think it matters though!
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1980 931S
15psi boost, MS-II, EDIS, 951 IC, custom intake, Ford 5.0L throttle body, Forge BOV, WB o2, G31 w/LSD, 964 wheels, 968 rear sway, Bilsteins, 200# Welt. springs. A laptop, and a partridge in a pear tree.
1991 964 C4 Cabriolet

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

The way you have them installed makes sense when you consider the writing printed on the springs would be the right way up with the compressed springs on the bottom. I was never much good at Physics, but I just assumed it made a difference which way they went in.
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1987 951 - M193 Version for Japan

Khal · Posted: Fri Dec 29, 2006 4:03 am Post subject:

Many moons ago, when I put progressive springs in my old Bimmer, we installed them the way they're pictured in your first post, with the tight coils at the top.

Never really thought about why. As I recall, it's just the way the supplier said to put them in...
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'80 924 Turbo

Min · Posted: Fri Dec 29, 2006 4:45 am Post subject:

I have some of those springs installed on my 931 chassis, the tight coils are on top. I got the car with them installed that way.

Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Not to hijack the thread, but should I install a pair of these while my front suspension is apart?

The options are:

220 lbs Stock Height Springs
200 lbs Performance Springs (Lowers Car About 1.25 Inches)
250 lbs Autocross Springs (Lowers Car About 1.5 Inches)

TIA
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Joes924Racer · Posted: Fri Dec 29, 2006 5:50 am Post subject:

hmmm both ways make sense to chrenen Nick seems to have a good theary, Khal has them the other way.. as mins cam that way....thewn theres the hi-jacker someone call weltmeister

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

Joes924Racer · Posted: Fri Dec 29, 2006 5:57 am Post subject:

I called paragon and left them a message & my number.
I called back a few minutes later and talked to Chuck
and he said it doesnt matter you can put them in either way
though if you put one side one way the other side has to be the same
other than that... either way doesnt matter.

Heres Chucks number 1-361-289-8834 paragon products.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Thanks Joe and everyone else, I thought it might be a stupid question, glad to know it wasn't too stupid!
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1987 951 - M193 Version for Japan

flosho · Posted: Fri Dec 29, 2006 6:37 am Post subject:

Guess I'm a lil late, but I have the 250# 1.5" lowering springs and I put the tight coils near the top.

I don't think it matters which way though.
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[This Space For Rent]

Smoothie · Posted: Fri Dec 29, 2006 6:46 am Post subject:

morghen · Joined: 21 Jan 2005 Posts: 9102 Location: Romania

a friend of mines installed progressive springs on his corrado with the tight coils down and when he hits a bump or smth they make a crappy noise...so i think they should be installed with the tight coils upwards.
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Supercharger and EFI kits
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Joes924Racer · Posted: Fri Dec 29, 2006 8:57 am Post subject:

Shall we turn the post into a poll ..'lol'.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Every set of stock progressive springs I have put in (many!) always called for the tighter coils on top. I don't know why either. JMTC

Todd
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'79 924NA. Rebuilt 9.5:1, MSDS header, Mega Squirt Injection, MJLJ-EDIS Ignition, 1.6L Whipple Charger and Intercooler, 10lbs Boost, 944 Trans, Custom HD Clutch.
"simsport" said....superchargers are better than turbos its official!....