Martin S.

You can get solid, with or without the GT2 tilt from Tarrett Engineering, about $350. a kit from ERP through Steve Weiner, about $350...don't know if they are solid???? Or you can get the hardened rubber mounts from FVD, a mere $950 or so, and they are on sale!

I have the ERP coming from Steve Weiner.

IXLR8

By ERP I take it you mean this outfit. They list them as "solid mounts".

What do they mean by "solid mounts"? PU or similar or metal?


Anyone wanting to go the OEM route, Elephant Racing has them regularly priced for $640 & $660 for OEM & Sport hardness.

NP993

Get the solid....I put them in and could not for the life of me discern any additional NVH.

mr_bock

I bought the ERP Tilt mounts, but I am thinking I should cut the spacers down to the non-tilt height.
The car has the MO30 Monroe shocks and H&R springs. Any thoughts on this is welcomed.
I assume the non-tilt spacers have only two steps as opposed to the four steps? Any pix of the non-tilt spacers?

Thanks!!!!!

Cupcar

Or make your own for $200.

I made these up with stainless steel spherical washer sets above and below the aluminum mount plugs to duplicate the float the rubber had so the bolts have a pure axial draw on them with no bending moment after torquing. You can see the slight motion of the spherical washers relative to each other because of this mis-alignment.

These raise the sub-frame 10 mm relative to the chassis floor with no tilt.

Kit laid out on floor with new VW sourced 10.9 bolt



Installed in frame with spherical washer set on top of aluminum mount plug pressed into in sub-frame



Installed with top and bottom spherical washer sets showing, note the slight offset of the washers due to misalignment

IXLR8

The two washers on each end (of the pic) that look like Belleville washers?

I'm not seeing that.

I'd need a good write-up explaining the reason for "tilt".

Cupcar

See above responses in BOLD

Bill Verburg

Things of beauty!!


a tilt kit changes the caster and SVIC location
w/ flat a 993 has ~93% A/S tilt the front down and the SVIC goes down commensurately lowering A/S. Why would you want more A/S? to put power down at the expense of increased understeer.

Martin S.

NVH? I know it is simple, but what do it mean?

Bill Verburg

NVH-engineer speak for noise, vibration, harshness

Martin S.

...admit it, somebody else had no clue on NVH! No I suppose some of us (me) don't have the audacity to ask about SVIC and AS? I am getting schooled on this LSA suspension, and love it too.

Bill Verburg

SVIC- side view instant center, determined by the angle of the planes of the rear suspension and the line from the tire contact patch. The relationship between the SVIC and the Center of Mass determines anti-squat(A/S) and anti-dive(A/D)

Martin S.

This is good stuff, pure platinum info. Thanks Bill!!!!!

Need to re-read Carroll Smith and Fred Puhn for some more suspension detail.

IXLR8

So did you make them simply to replace worn OEM bushings and what was the reason for the 10 mm increase?

Also, since there is no tilt, any reason for the spherical washers or was that to do it right, just in case?

Did you turn these parts yourself? I know how pricey SS can get.

IXLR8

Bill, as always, thanks!!!

I will get the engineer who runs the shake and bake section at work to explain all this. His grad paper was on suspension design and he used to race.