H&R Springs Anyone ?

speedworks · 04-05-2010, 09:25 PM

Quote:

Originally Posted by kevr6

True!! Here are the final specs. Notice the front camber slightly off. The left rear was tough also. One adjustment dominoes all the other adjustments. Like chasing your tail. I'm not sure if it's due to using Ichiba links instead of the SPL. All is close enough for me though.

Interesting. At least they got the total toe within spec (little effect on steering and some crazy wear). Now, the front camber looks unchanged - this car doesn't have fixed bolts does it? Can it be changed? I am surprised there was no change at all.

kevr6 · 04-05-2010, 09:34 PM

Quote:

Originally Posted by speedworks

Interesting. At least they got the total toe within spec (little effect on steering and some crazy wear). Now, the front camber looks unchanged - this car doesn't have fixed bolts does it? Can it be changed? I am surprised there was no change at all.

You'd need the adjustable control arms to get it right on the OE spec.
Kinetix Racing 370Z Front Upper Camber A-Arms - performance parts

Mike · 04-05-2010, 10:50 PM

Quote:

Originally Posted by kevr6

You'd need the adjustable control arms to get it right on the OE spec.
Kinetix Racing 370Z Front Upper Camber A-Arms - performance parts

you don't want their stuff. GTE in Atlanta is a very reputable alignment shop where most of the racers go and they told me to run, not walk from their products. Eibach has some, but as noted elsewhere, they are made by SPC, which to me means, they must be ok for eibach to rebadge them. I prefer SPL parts though, myself.

docaam · 04-05-2010, 06:55 AM

kevr6...very nice stance or your car

can you pm me where to get these rear spats from? and offset of your wheels

jmlenz · 04-06-2010, 05:20 PM

Kev > not to stray too off topic but when you installed the Megans did you set any preload on the rear (not sure if this can be set on front too?). When you reached under the car and grabbed the rear spring could you rattle it or was it solid? How about with the rear jacked up? I can rattle the crap out of mine which leads me to believe the installer set zero preload = noisy rear springs.

azn370z · 04-06-2010, 05:54 PM

Quote:

Originally Posted by jmlenz

Kev > not to stray too off topic but when you installed the Megans did you set any preload on the rear (not sure if this can be set on front too?). When you reached under the car and grabbed the rear spring could you rattle it or was it solid? How about with the rear jacked up? I can rattle the crap out of mine which leads me to believe the installer set zero preload = noisy rear springs.

you need to preload the rears so the springs don't move when the tires are off the ground. You can't and don't need to preload the front.

jmlenz · 04-06-2010, 06:28 PM

Quote:

Originally Posted by azn370z

you need to preload the rears so the springs don't move when the tires are off the ground. You can't and don't need to preload the front.

You cant and dont need to preload the fronts because the Megan coilovers dont offer this adjustment/feature or is that with any coilovers for the 370?

azn370z · 04-06-2010, 06:36 PM

You're not supposed to adjust the springs on the fronts. You use the shock to adjust height.

You have to use the rear springs to adjust height. Then you shorten the length of the shocks to add preload.

kevr6 · 04-06-2010, 06:57 PM

Quote:

Originally Posted by jmlenz

Kev > not to stray too off topic but when you installed the Megans did you set any preload on the rear (not sure if this can be set on front too?). When you reached under the car and grabbed the rear spring could you rattle it or was it solid? How about with the rear jacked up? I can rattle the crap out of mine which leads me to believe the installer set zero preload = noisy rear springs.

I did the install using a lift and once on the ground there was no movement!
Most Coilovers have the helper springs but the Megans did not so front and rear were loose during install.
On the H&R springs the first three coils act as helper springs so even though out of the box they are the same height as the stock
springs, you'll still get that dropped ride height!

Zeester · 04-09-2010, 12:48 PM

Car looks awesome with those springs man ! But what I really want to know is how they perform...

How would you compare these to the Tanabe GF210s ? Although i know you probably never had experience with them...maybe you might know someone who does ?

kevr6 · 04-09-2010, 02:53 PM

Quote:

Originally Posted by Zeester

Car looks awesome with those springs man ! But what I really want to know is how they perform...

How would you compare these to the Tanabe GF210s ? Although i know you probably never had experience with them...maybe you might know someone who does ?

I really do not have first hand experience w/ the Tanabe product. I do know that the ride height is similar & I've heard that they are pretty stiff.

Zeester · 04-09-2010, 08:03 PM

You think they're stiffer than these H&Rs ?

Im in the market for a stiff spring that lowers the car about an inch or so and yet has more performance due to it being stiffer.

jmlenz · 04-06-2010, 06:47 PM

Azn370 > got it thanks. So you have the proper amount of preload set and your still getting clunks from the rear huh? Thats a bummer. Im hoping my noises go away after adding preload.

azn370z · 04-06-2010, 06:55 PM

If you're familiar with the 350z you know even the oem suspension can make a clunking noise. Mine didn't. There is a fix on the 350z forum. There are a couple 370z owners with clunking oem suspensions. But yes aftermarket and oem can make noises.

ZForce · 04-11-2010, 03:55 AM

I really liked the H&R on the Z33 and I like them just as well on the Z34, to the point where I really came close to selling my boxed up Eibachs for some H&R's. But this time around I am keeping the total cost down low, so Eibachs will be the way to go for me. Therefore I will not have to spend extra $$ on the upper control arms to get the fronts back into oem spec. Savings of about $500.

As far as the rear on the H&R giving the car too much of a rake, like myself. Maybe look into cutting about 0.5" off the rear rubber spring mounts. That's what I did for the Z33, from the previously posted pics a few pages back. Looked clean...imho...but it's all a personal preference.

It's a tough call....if you want the lowered look then plan on shelling out additional $$ for upper control arms. If you want to the minimum cost for lowered look, then go with Eibachs and you should not need the upper control arms. Either springs will require rear camber kits. For the fronts I still prefer SPC, they are well manufactured and great for DD. SPL are stiffer, a bit more $$ and ideal for track. Stay away from Kinetix.

Overall the H&R look sweet and aggressive and if I had the extra $$ I would go this route. Nice job guys!

04-05-2010, 06:55 AM	#4 (permalink)
docaam A True Z Fanatic Join Date: Nov 2009 Location: Dubai Posts: 2,532 Drives: Z34/240z/Hakosuka Rep Power: 29	kevr6...very nice stance or your car can you pm me where to get these rear spats from? and offset of your wheels __________________ Old 370Z SOLD but not forgotten 370Z 40th, G37s, S30 RBZ, Hakosuka Skyline

04-06-2010, 06:36 PM	#8 (permalink)
azn370z A True Z Fanatic Join Date: Nov 2008 Location: Seattle Posts: 1,722 Drives: z34 - R1 Rep Power: 490	You're not supposed to adjust the springs on the fronts. You use the shock to adjust height. You have to use the rear springs to adjust height. Then you shorten the length of the shocks to add preload. __________________ 2010 k23 H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts

04-06-2010, 06:55 PM	#14 (permalink)
azn370z A True Z Fanatic Join Date: Nov 2008 Location: Seattle Posts: 1,722 Drives: z34 - R1 Rep Power: 490	If you're familiar with the 350z you know even the oem suspension can make a clunking noise. Mine didn't. There is a fix on the 350z forum. There are a couple 370z owners with clunking oem suspensions. But yes aftermarket and oem can make noises. __________________ 2010 k23 H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts

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04-06-2010, 05:20 PM	#5 (permalink)
jmlenz Track Member Join Date: May 2009 Location: San Diego Posts: 645 Drives: a car Rep Power: 644	Kev > not to stray too off topic but when you installed the Megans did you set any preload on the rear (not sure if this can be set on front too?). When you reached under the car and grabbed the rear spring could you rattle it or was it solid? How about with the rear jacked up? I can rattle the crap out of mine which leads me to believe the installer set zero preload = noisy rear springs.

04-09-2010, 12:48 PM	#10 (permalink)
Zeester Base Member Join Date: Nov 2009 Location: Los Angeles Posts: 118 Drives: 2009 370Z Rep Power: 16	Car looks awesome with those springs man ! But what I really want to know is how they perform... How would you compare these to the Tanabe GF210s ? Although i know you probably never had experience with them...maybe you might know someone who does ?

04-09-2010, 08:03 PM	#12 (permalink)
Zeester Base Member Join Date: Nov 2009 Location: Los Angeles Posts: 118 Drives: 2009 370Z Rep Power: 16	You think they're stiffer than these H&Rs ? Im in the market for a stiff spring that lowers the car about an inch or so and yet has more performance due to it being stiffer.

04-06-2010, 06:47 PM	#13 (permalink)
jmlenz Track Member Join Date: May 2009 Location: San Diego Posts: 645 Drives: a car Rep Power: 644	Azn370 > got it thanks. So you have the proper amount of preload set and your still getting clunks from the rear huh? Thats a bummer. Im hoping my noises go away after adding preload.

04-11-2010, 03:55 AM	#15 (permalink)
ZForce A True Z Fanatic Join Date: Jul 2009 Location: Roseville, CA Posts: 2,359 Drives: 09 370Z Tour + Sport Rep Power: 22	I really liked the H&R on the Z33 and I like them just as well on the Z34, to the point where I really came close to selling my boxed up Eibachs for some H&R's. But this time around I am keeping the total cost down low, so Eibachs will be the way to go for me. Therefore I will not have to spend extra $$ on the upper control arms to get the fronts back into oem spec. Savings of about $500. As far as the rear on the H&R giving the car too much of a rake, like myself. Maybe look into cutting about 0.5" off the rear rubber spring mounts. That's what I did for the Z33, from the previously posted pics a few pages back. Looked clean...imho...but it's all a personal preference. It's a tough call....if you want the lowered look then plan on shelling out additional $$ for upper control arms. If you want to the minimum cost for lowered look, then go with Eibachs and you should not need the upper control arms. Either springs will require rear camber kits. For the fronts I still prefer SPC, they are well manufactured and great for DD. SPL are stiffer, a bit more $$ and ideal for track. Stay away from Kinetix. Overall the H&R look sweet and aggressive and if I had the extra $$ I would go this route. Nice job guys!