Lets talk suspension

[chevrolet]

It seems like a stretch to go with a gen 3 sub frame in a gen1. Perhaps biting off a chunk too big to chew.

 

[SinisterSHO]

honestly do a search, this has been covered a bunch in the last year.

It seems like a stretch to go with a gen 3 sub frame in a gen1. Perhaps biting off a chunk too big to chew.

:wave:

 

[JEM]

It seems like a stretch to go with a gen 3 sub frame in a gen1. Perhaps biting off a chunk too big to chew.

A stretch? Well, there's a fair amount of work involved, and it's the same whether the target is a Gen1 or Gen2. But once you've made the engine-mount mods to the Gen 3 subframe (or bought a modified subframe from Kirk or someone else set up to modify them) it is very much a bolt-in. The only cutting involved on the car is ovaling out the D-shaped steering-shaft hole in the firewall so that the rack U-joint doesn't bind and the Gen3 rack boot fits right.

You need to get all the right parts (search the archives), you need to have a power steering pressure hose made up (easy), you need to figure out what to do with the power steering return line and cooler (not too hard), and you need to figure out how to mount the cruse control vacuum motor (I use cruise so seldom I haven't bothered yet.)

 

[NotSoSlowSHO]

I don't think it really matters much, dude. They are all pretty similar and the only way you are going to determine which is best is through testing.

They are very similar. And I will agree that testing is the only way to find out which set should be under your car. They are CHEAP afterall.

Also, it has been a LONG time since I put that page together. I remember some kind of discrepency about the spring heights, due to the coils being PROGRESSIVE rate. I cannot remember for the life of me if the rate is at the lightest, heaviest, or an average throughout the coil.

Being progressive rate really creates confusion.

 

[SHOCH]

Kirk did my Gen III subframe and the PS cooler is just tucked in there and can't really go anywhere. We talked about a bracket and he's working on it, but I ran all day at Gingerman and home without a problem. And BTW the Subframe swap was VERY worth it for the handling advantage.

 

[JEM]

Kirk did my Gen III subframe and the PS cooler is just tucked in there and can't really go anywhere. We talked about a bracket and he's working on it, but I ran all day at Gingerman and home without a problem. And BTW the Subframe swap was VERY worth it for the handling advantage.

My PS cooler is a little Earl's piece in a bracket I fabbed up from an Earl's cooler mount and a piece of 1/8in AL plate, hanging under the bumper strut at the right-front corner; it's overkill but I already had the Earl's bits around (I have a mirror-image setup on the left-front corner for the MTX cooler.)

Early on I'd also welded up a little bracket to hang a stock PS cooler up in front of the radiator, but I decided I wanted that space for an engine-oil cooler so that bracket went off to zak.

The two simplest approaches are (a) grab an ATX transmission cooler from a junkyard car (which is overkill too, but very easy and cheap) or (b) hang the stock PS cooler from a piece of steel strap under the right-side bumper strut.

 

[illSHOyou]

They are very similar. And I will agree that testing is the only way to find out which set should be under your car. They are CHEAP afterall.

Also, it has been a LONG time since I put that page together. I remember some kind of discrepency about the spring heights, due to the coils being PROGRESSIVE rate. I cannot remember for the life of me if the rate is at the lightest, heaviest, or an average throughout the coil.

Being progressive rate really creates confusion.

Is it worth the trouble to contact Moog about the different spring rates? Will they provide good information or just be a waste of time?

 

[ManySHOs]

Is it worth the trouble to contact Moog about the different spring rates? Will they provide good information or just be a waste of time?

There's only one way to find out:

http://www.federal-mogul.com/en/ContactUs/

Ian

 

[rubydist]

Also, it has been a LONG time since I put that page together. I remember some kind of discrepency about the spring heights, due to the coils being PROGRESSIVE rate. I cannot remember for the life of me if the rate is at the lightest, heaviest, or an average throughout the coil.

Being progressive rate really creates confusion.

The progressive springs get stiffer as they compress. The coils that are close together bottom out, and that shortens the effective length of the spring, which raises the spring rate.

 

[NotSoSlowSHO]

The progressive springs get stiffer as they compress. The coils that are close together bottom out, and that shortens the effective length of the spring, which raises the spring rate.

Thanks captain obvious

My point is that they are progressive rate springs, yet MOOG only supplies ONE spring rate, not a range.

 

[illSHOyou]

I requested information on the four springs listed on Kenny's tach page. Hopefully they can provide us with more information on the spring rates through compression.

 

[chevrolet]

1100 in the front, 600 rears.