What Spring rate?, My 100# springs are on backorder... Options

[bmtrnavsky]

I ordered some 100# rear springs for my 73 2.0 and just found out they were on back order. My stock springs are toast... Everyone always says WOW! you set that up really squatty in the rear, and I'm like ya the springs are toast... so I was planning on putting in some 100# springs with Boge shocks. The fronts are done now and it is a BIG improvement already, but I have been waiting on my rear springs to do my rear shocks all at once. I don't really want to wait until October to finish this job, so my choices seem to be a stock spring... I don't really want this, a 90# at factory ride height, 140# lowered 1.5 inches, or the stock 65# spring. At this point I realize ANYTHING is better than what I have... but I am leaning towards the 140# springs.

I commute in the car on nice days but the car is mostly driven for fun, and I REALLY want to start taking it to the track for AX. I thought the 100# was a nice balance in performance and ride... is the 140 pound going to ride too harsh on the road?

I guess it's subjective, but I don't want to ruin it's manners on the road where it spends 90% of it's time. But I also want the car to handle really well and I get that I will have to make some compromise.

Thoughts?

[SLITS]

Far as I remember, 90 - 100 lbs was stock.

Oh well ......

[Tom_T]

Far as I remember, 90 - 100 lbs was stock.

Oh well ......

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Stock rear on the 73 2L was 100#

140# would be pretty harsh for a DD unless you have a short commute or well padded butt! (IMG:style_emoticons/default/biggrin.gif)

100# should be stiff enough with good shocks for street fun, but maybe 120# for AX.

Boge shocks are the baseline stock set-up & not very stiff, & I hear their newer HD ones aren't much better. That's why Porsche offered the Bilstein option from the factory. You can still get Bilsteins & front inserts for the Boge Struts, as well as same for Koni's. They recco getting all 4 corners the same mfgr., type & stiffness at the same time - so you'll want to do the front inserts too.

A lot of folks don't like the KYB's - esp. with a street car/DD use.

Back in the day I upgraded to these rear Koni Reds (similar to their street HD ones now, but called "Super D" back then) F & R when my Boges wore out, & they gave a good deal of handling improvement over the Boges IMHO -



BTW - your stock 16mm F & 15mm R factory sway bars should be fine for street & street class AX, but you may want to go through & re-bush everything on the F & R suspension while you're in there upgrading stuff, if they've never been redone in 37-38 years. If you need new tie rod ends/ball joints up front, then you may as well go with the Turbo Tie rod kit for a few bucks more, but stick with the OEM Lemforder kit - not the cheaper & lower quality aftermarket tir rod ends/bj's - cuz I thought they were (IMG:style_emoticons/default/stromberg.gif) & sent them back & just paid the extra for the OEM ones in the other kit (PP, AA, Pelican, maybe PMB & others carry it).

Go forth & drive young Jed-eye!
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