Martin S.

As we know, the front struts have minimal threads for height adjustment, and no threads on the rear, with rear height adjustable only by the use of an assortment of three (3) shims, 3mm, 5.5mm and 8.0mm. These are not very big shims.....

Be that as it may, let's not forget what a great improvement the rear suspension was over previous, and possibly later models, with the LSA (Light, Stabe, Agile) suspension and the bonus of kinematic toe...which can really help handling on deceleration. I am more than pleased with my 993 car's handling. It has never let me down, predictible. It actually serves to creat the illusion that I am a decent driver...My ABS and the LSA really helps with this. The Big Reds help too!

Bill Verburg

Thanks, the reason I asked for that one was the references in PET to it, r.e. the springs, doesn't seem to be relevent in that regard though.

geolab

I am sorry Bill, I have the PET6 and have never known there were cross-references with the TSB's. Could you tell me where in the PET6 is that? or is it the downloadable PET catalog you are talking about?

Wilder

Well, I just confirmed my unfortunate suspision...they sold me the Trubo ones!!! Thanks Geolab.

Bill Verburg

I will have to plead the 5th, but if you look on the US side you will see this, doesn't appear on the RoW side

Garth S

LJ,
I installed those by choice recently - with M030 bars: very pleased with the results ... so you may not be all that unfortunate ...

Edward

Geolab,

Please feel free to disagree with me ...I have no stake in this nor do I take much of anything personally. But do you really think that the mere difference of, say, going to a 250lb front spring, or dare I say a 275lb (ooooh!) is going to rattle those lowly TT, RS, or GT3 chassis more than the stiffened/reinforced NA993? I guess all those fools throwing in PSS9s and their attendant monster springs into those flexible flyers are going to lose some fillings ...or maybe it'll just rattle their POS chassis apart. I wonder which will occur first.


Edward

geolab

Thanks Bill, got the page, it was updated and it concerns only the struts, unfortunately.

the second .pdf is for curiosity

Wilder

You might be right. I just picked up my car yesterday after having the alignment done and it felt a little too stiff and jittery in the back. I took the day off today and drove it extensively the past few hours and it felt better than yesterday. I also realized that since I have a cab, which is heavier in the back than the C2, the TT springs might actually balance the car better.

The set up will be great for AX and DE events but I don't think she'll see many more as I'll be looking for a TT in a few months and the cab will be strictly a sunny day driver for which I would've preferred the softer ride. That's why I made that comment, but you're right either way the car handles and looks way better. Pictures coming soon to a thread near you...

Bill Verburg

Thanks very much, you just filled sin some holes for me. I have been trying to collect the 993 tsbs. They are not easliy obtained.

Bull

My 600lb front and 800lb rear springs, JIC Cross 15 adjustment shocks and H&R 26mm/24mm sway bars haven't caused a single rattle or creak...in the car or me (well, new creak in me).

geolab

Edward, I am here with a "I am curious, share what I have got, and want to learn more ..." attitude since my subscription, rather than the " I KNOW ..." atittude.

The whole post started with why are there springs with two brown dots and others with three brown dots.

- 1st assumption "the springs are the same"
excellent !! Now to complete the strut assembly, you fall on a shim that fits above the spring.
This shim exists in three thicknesses, which one should you purchase?
A quick look in the Workshop manual for more info, and you discover each shim
for a different number of dots on the spring.
So the two dotted spring is not the same as the three dotted spring.
And the springs side by side, are exactly the same height.
Isn't any normal 993 enthousiast curious to knowing why?
or shall we also throw it on the conspiracy theory????

As for the stiffness of a chassis, I think you mixed up a bit in your quote here-above. Maybe you meant asking "if a stiff suspension is going to rattle a normal 993 more than a TT or RS?"
From what I have learnt so far and on the long run? yes.

If you would like to discuss the chassis issue, I presume we should take it to another post.
Please read the second .pdf I posted above for curiosity (the last lines in particular)
Some have tried to ridicule this post while the only thing they ever do is ridiculize themselves

Bill Verburg

On mine the car doesn't rattle but my back sure does.

geolab

If you need some in particular, send me your mail and I will get them for you from the dealer tomorrow or whenever you need

Greg Fishman

How is this since the TT chassis is the same construction wise as a N/A 993? I repeat the only seam welded (chasis strengthened) road going 993 was the RS.

You seem to have am ability to select those "facts" that support your hypothesis, all the while throwing away any real evidence to the contrary.