R30 Standard Ride Height

[blind_elk]

I've fitted lowered springs to my R30 (hatch), and the front suspension, on KYB inserts, has virtually no travel available in "bump". So if you drive over a 5 cent coin, it feels like you've driven over a brick. The ride height is roughly 350 mm wheel centre to arch.

If anyone has a "stock" R30, preferably the hatchback, can you let me know the standard ride height (wheel centre to arch).

TIA

[Ghostrider]

We have discussed this heaps on here in the past, and in particular a marathon R30 post started by RSX84.

The problem is lowering beyond 30mm.

The only fix is to modify the struts to accept R31 inserts that have a 27mm shorter stroke and use R31 rear shocks as they have a 20mm shorter stroke.

Cheers

[blind_elk]

Sorry, I did a search first (R30 +ride +height), and it returned nothing, zip, nada, zilch.

The rear isn't a problem at all, only the fronts.

[Ghostrider]

I just listed my MR30 Body that might interest you, the unique part about it is the engine/body combination comes with an ENGINEERS REPORT for after market turbo application.

Make me an offer is the deal, but I have a spare tailgate and interior parts all going with it.

PM me if your interested or know anyone that might be.

Cheers,

Dennis

[stagefumer11]

Intresting as i have a similar problem

I lowerd my r30 using Monrouge standard repacement shocks in the front Fitted with Cobra Low front and rear springs. The fronts have very little travel, But dont feel stiff. The rear shocks are the r31 items, As well the r30 rears are not avalible atm. I still have alot of body roll

Now this gets me, The car didnt lower. I have to admit it stiffend up alot. But not stiff enough and the Rear Sqwats big time. Ive watched it drop 60+mm on eccal. (friend was driving)

Then again i dont have traction problems launching

Edited August 28, 2005 by stagefumer11

[Ghostrider]

I just listed my MR30 Body that might interest you, the unique part about it is the engine/body combination comes with an ENGINEERS REPORT for after market turbo application.

Make me an offer is the deal, but I have a spare tailgate and interior parts all going with it.

PM me if your interested or know anyone that might be.

Cheers,

Dennis

<{POST_SNAPBACK}>

Check the spring rates, you might have a DRAG set up, which would have the rear springs a lot softer than the front so that it does that at launch.

About 200lb/in is a good rear lowered rate. Maybe a little less like 175 but not much less and with 175's in the rear 200 up front or 225/230 with the 200 rears. Larger diameter sway bars will fix your roll problems.

My PNV has 24mm rear sway bar and 26mm front with 330lb/in front springs & 290lb/in rears on JIC Coilovers on all corners and it handles quite nicely under hard driving. Ride is a bit ordinary, but that is what I expected with springs over 3 times harder than standard.

[stagefumer11]

that will be something ill look into, Have you got current pics with how high yours sits ?

[discopotato03]

A thing to watch with lowered cars is the front control arms , if they are horizontal the camber will decrease as the wheel rises . With correct geometry they will angle down at the outer ends so that camber increases with body roll .

For some strange reason people want to have the ride height low at the front of R30's , I suspect its a fill the arches look thing . All it really ends up doing is hitting the bump stops , bump steering , damaged sumps - bad geometry and lack of travel . The right spring/damper/anti roll bars work well believe it or not at standard height . If you set them up for extra positive caster they don't need much if any static negative camber , which lowering gives but with std caster results in a smaller contact patch on the inside tyre . This is why wally's always wear the insides of their front tyres out .

With high spring rates the dampers MUST be valved to suit or the pogo effect merely causes the wheels to bounce off the ground causing lack of steering / drive/brake adhesion .

[Ghostrider]

that will be something ill look into, Have you got current pics with how high yours sits ?

<{POST_SNAPBACK}>

No! not until I roll it out of the garage again, but the coilovers were physically 50mm shorter than the standard same item, yet it doesn't appear to the eye any lower than before.

What Disco says is right and is emphasised in front wheel drive. When the lower control arms go past the horizontal, they really handle like a pig.

They might look good but they don't do anything.

Next time your cruising down the road and behind a FWD car that bounces on every little mark on the road, you can bet it's on the bump stops and lowered with the magical hacksaw blade.

[stagefumer11]

thats right, i guess..... I do know when you lower the front of a r30 the tie rod link rods need to be shortend, so the sway bay isnt out of it correct alignment.