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Old 04-20-2020, 11:32 AM   #26
142 guy
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Originally Posted by Redwood Chair View Post
Remember to grab the 240 upper spring perches when you're in the JY picking your 244 rear springs.
Now I understand the reference to JY 244 springs in post #20. I though JY was some kind of weird model designation.
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Old 04-20-2020, 11:35 AM   #27
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Now I understand the reference to JY 244 springs in post #20. I though JY was some kind of weird model designation.


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Folks on here don't know a good deal when they see it.
how psi stock cna support?

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Old 04-20-2020, 11:47 AM   #28
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All that said I do have some rear springs removed from an 84 244 Turbo, but no upper perches.
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Old 04-20-2020, 12:40 PM   #29
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That's what I was shooting for on my 145.

Trying to mimic the ~10% stiffer 79 GT springs & overloads that are on my 245 which still rides comfortably, carries a load and doesn't scrape all the time in normal daily driving.

Just never got around to putting them in and / but I already have 245 Turbo rear springs installed.

Just so we're on the same page, you're saying that when attempting to reach my goal (better handling while still not being miserable in the city) you planned to run the hipercoil springs on the front and 245 rear springs?
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Old 04-20-2020, 03:09 PM   #30
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Just so we're on the same page, you're saying that when attempting to reach my goal (better handling while still not being miserable in the city) you planned to run the hipercoil springs on the front and 245 rear springs?
Yes exactly.

There's a couple threads on here and other forums if you google '140 Volvo spring rates'.
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Old 04-20-2020, 04:07 PM   #31
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Awesome. I do think (after talking to the alignment shop as well) that I'm going to try to go with a solution that is meant for the 140. So the hipercoil front springs are a solid option but the rear springs are probably a no-go. I'm super curious what the rate is for classicswede's set.
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Old 04-21-2020, 12:14 AM   #32
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I don't see why not run 240 rear springs, same setup and a slightly heavier car.



You'll need to know the rates, free lengths and the pigtail situation.


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Not many springs have double pigtails like early 140 rear springs.
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Old 04-21-2020, 06:55 PM   #33
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Most alignment guys are jack-legs with no interest in any mods.
Do what you want, and find a shop that will give you as much caster and neg camber. And a bit of toe.
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Old 04-21-2020, 06:58 PM   #34
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Afco and others do sell pigtail springs in 5.5”, too.
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Old 04-21-2020, 08:37 PM   #35
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Stock cars use constant rate sprigs since there's no such thing as a progressive rate shock.
Mostly they need repeatable results that can be changed with a predictable spring. But that's NASCAR. Dirt track is a different beast. We see all kinds of stuff, including variable rates.

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I have some NOS 5" x 11" x 350# hipercoil 'blue' springs I'd sell for $85 shipped.
If OP passes, I am interested. But not for the front of a 140.
It has been a real long time, but when I looked at one for a customer, they have a less-than-0.25 MR^2. So that spring would be about stock. A fullsized GM car with a 0.25 motion ratio squared (spring in the middle of the A-arm) would have between 700-1000# stock, depending on how huge it was.

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Originally Posted by Redwood Chair View Post
That's what I was shooting for on my 145.

Trying to mimic the ~10% stiffer 79 GT springs & overloads that are on my 245 which still rides comfortably, carries a load and doesn't scrape all the time in normal daily driving.

Just never got around to putting them in and / but I already have 245 Turbo rear springs installed.

The turbo rear springs on a 142 sounds like a plan for the OP's poorly-stated intentions. /jv
So with a (guessing) 150-200# vert wheel rate in the rear, he will need 600-800# springs on those A-arms, and I don't have it in me tonight to start doing the height math without the real length numbers of all the arms here. They are somewhere at school.
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Old 04-24-2020, 12:29 AM   #36
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The turbo rear springs on a 142 sounds like a plan for the OP's poorly-stated intentions. /jv
So with a (guessing) 150-200# vert wheel rate in the rear, he will need 600-800# springs on those A-arms, and I don't have it in me tonight to start doing the height math without the real length numbers of all the arms here. They are somewhere at school.
Yeah fully aware that I'm a noob. Honestly mate, feel free to let me know when these forums shift to a point where people are gonna get shamed for asking stupid questions, and I'm more than happy to roll out and leave y'all to a circle jerk. The internet is full of forums that have passed their prime and become full of internet-tough-guys who just want to shame people who are learning. Get at it, more power to ya.

Back to my stupid questions - I'm probably going to pass on the set Redwood has kindly offered. I trust the alignment shop at this point, and don't know enough to effectively use the wealth of information you guys have imparted. I sincerely appreciate all the help everybody has given, and really have learned a ton. Definitely super useful, but the alignment shop has built 140s for sport use before, so I do trust them to do it good.
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Old 04-24-2020, 12:45 AM   #37
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Originally Posted by mikep View Post
Mostly they need repeatable results that can be changed with a predictable spring. But that's NASCAR. Dirt track is a different beast. We see all kinds of stuff, including variable rates.


If OP passes, I am interested. But not for the front of a 140.
It has been a real long time, but when I looked at one for a customer, they have a less-than-0.25 MR^2. So that spring would be about stock. A fullsized GM car with a 0.25 motion ratio squared (spring in the middle of the A-arm) would have between 700-1000# stock, depending on how huge it was.

The turbo rear springs on a 142 sounds like a plan for the OP's poorly-stated intentions. /jv
So with a (guessing) 150-200# vert wheel rate in the rear, he will need 600-800# springs on those A-arms, and I don't have it in me tonight to start doing the height math without the real length numbers of all the arms here. They are somewhere at school.
The stock front 140 springs are 12" free length, using the green book wire diameter, and counting the active coils the Wallace racing spring rate calculator I get 320 #.
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Old 04-24-2020, 10:27 AM   #38
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My experience is consistent with what 142Guy said- I got front progressive springs and rear straight rate from VPerformance and the fronts sagged badly. No matter how much I cut off the bump stops there was contact. I ended up replacing the fronts with a set from ClassicSwede and they're much better. These are the 40mm lowering springs so maybe not exactly what you're looking for but I'd contact him anyway.
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Old 04-24-2020, 12:27 PM   #39
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My experience is consistent with what 142Guy said- I got front progressive springs and rear straight rate from VPerformance and the fronts sagged badly. No matter how much I cut off the bump stops there was contact. I ended up replacing the fronts with a set from ClassicSwede and they're much better. These are the 40mm lowering springs so maybe not exactly what you're looking for but I'd contact him anyway.
Super good to know. From what I understand the springs from vp-auto are a little less stiff than those that classicswede has, and a little less lowered. I'm going to talk to him some more about it though!
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Old 04-25-2020, 07:28 PM   #40
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Originally Posted by CRatcliff View Post
Yeah fully aware that I'm a noob. Honestly mate, feel free to let me know when these forums shift to a point where people are gonna get shamed for asking stupid questions, and I'm more than happy to roll out and leave y'all to a circle jerk. The internet is full of forums that have passed their prime and become full of internet-tough-guys who just want to shame people who are learning. Get at it, more power to ya.

Back to my stupid questions - I'm probably going to pass on the set Redwood has kindly offered. I trust the alignment shop at this point, and don't know enough to effectively use the wealth of information you guys have imparted. I sincerely appreciate all the help everybody has given, and really have learned a ton. Definitely super useful, but the alignment shop has built 140s for sport use before, so I do trust them to do it good.
I wouldn't call anyone a noob, but I have no idea what you want to do with it (still).
We like to help.
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Old 04-25-2020, 08:13 PM   #41
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Default Free Range 144.

I believe he wants to do the slightly stiffer 'R sport' suspension we do on the 240s with the 79GT front springs and overload coils on the back but with a 144.
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Old 04-26-2020, 07:19 AM   #42
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From what I can gather he wants good comfort at speed over gravel roads. In my experience this would best suit +1inch gravel rally springs, stiffer than original with the extra travel to absorb harsh bumps. That setup works well on the road and off the beaten track
Along with that he wants it good on the highway that the above suggestion will do
Lowering is going to reduce the ability of the car to work well on those rough gravel roads. Using springs that are too soft and also going to make it bad as the suspension will keep crashing. The lower you go the harder the spring will need to be.

Wanting lower, good rough road and good tarmac means one of thos things need to be comprimised or all 3 even to try and get a balance
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