LehmanZ06

My question is this.....

Is rotating the struts in the service manual an "approved' method to get your camber back within a manufacturer "alignment spec". Like a "CRASH" bolt.

SCCA autocross Stock class rules (997 GT3 currently not allowed in Super Stock, but there might be a rule change in 2012 allowing it in, and I currently have my struts rotated.....and would like to leave the car this way if I could.

Thanks,

D.L.

smf32s

David,

I have spoken to Strano and Junior about this and rotating the strut tops is not allowed in stock for our cars. I like it too but if we go to SS we have to change back and use the shims to get the camber.

Hope you're well.

Stu

NJ-GT

With the new wording for the 2012 rules and camber allowance, if Porsche has the strut top rotation documented as a method to get more camber, it will be allowed in the stock classes.

...and the workshop manual explains this method of adjustment.

However, you have to run 19" wheels and tires, and tire choices are too bad. 996 GT3 will prevail.

911SLOW

It doesn't explain it.. : (


2011 RS

"
Front-axle wheel alignment

Adjusting front camber
Unlike the 911 Carrera (997), a basic camber adjustment is made by means of intermediate plates on the 2-part control arm of the front axle on the 911 GT3/GT2. A 1-mm-thick adjustment plate -arrow- is fitted as standard on the right and left in the 911 GT3/GT2.

Camber adjustment (fine adjustment) is carried out at the spring strut mount in the same way as for the 911 Carrera (997).
The 2-part control arms permit a correspondingly increased camber value for circuit use. This is achieved using thicker adjustment plates.

Basic camber adjustment

Camber fine adjustment
The camber is adjusted by moving the spring strut transversely. For this purpose, loosen the three fastening nuts on the spring-strut mount and, to move the spring strut, remove the cap on the piston rod. "

NJ-GT

John, is there information like the one below for the 997 GT3?

911SLOW

Yes.. but they don't even mention the bores on the control arms anymore.. : (

85Gold

I disagree run 235 front 315 rear add a bigger rear bar and the extra Powah of the 7GT3 will prevail over 6GT3. IMHO YMMV.

Peter

LehmanZ06

John,

If you look at what Rad posted, it references the bores in the SPRING STRUT MOUNTS, we are not talking about bores in the control arms.

Just checking if we are comparing apples to apples.

David

911SLOW

I know.. that is why I said "not even"..

LehmanZ06

Here the proposal from the fast track........ITEM 11) - Change 13.8.E as follows:
“If offered by the manufacturer for a particular model and year, the use of shims, special bolts, removal of material
to enlarge mounting holes, and similar methods are allowed and the resulting alignment settings are permitted
even if outside the normal specification or range of specifications recommended by the manufacturer. If enlarging
mounting holes is specifically authorized but no material removal limits are specified, material removal is restricted
to the amount necessary to achieve the maximum factory alignment specification.”
FasTrack June 2011

I interpret this to mean that it is offered by the manufacturer. Or else why put the alternate holes on top of the strut mount. The 996 GT3 and 997 GT3 both have these alternate holes which the 996 GT3 service manual clearly states that it is for racing, but is in the manual. I am hopefully getting hold of the 997 GT3 relevant manual pages from the dealer tomorrow..........these extra holes aren't for extra air circulation. They are alternate mounting holes used when extra camber is desired.......if 13.8 passes then rotation of struts is allowed....that's what I believe.

Signed,
Sir Itchy *****
Director of the North American Society of driving Mother-in-laws Crazy

LehmanZ06

I can't believe that the 997 GT3 and or 997 doesn't even reference the fastening bolts on top of the struts (M8), like the 996 does.

I like to see proof.

John, can you post the same pages from the 997 manual that Rad posted from the 996, and not just your reading of a paragraph or two. (this posting manual pages is beyond me as I am a techno-idiot)

If you can great. If not......I still believe the rotation of the struts is legal, provided.....

# 1......997 GT3 is allowed in SS

# 2.......................13.8 is modified as above.


Signed,

Sir Itchy *****
Royal Knight in Her Majesty's Stupid Service

TTurbine

Saw it on the 996 manual,,,

I would personaly not rotate the struts as it will effect caster..

Last year when i was at Manthey and talked to them about there view on rotating the struts for camber they didnt like it either... they said the best position was the facotry position..

wurlie

That's interesting as Manthey has just rotated the struts on my 4.0
Best, w

LehmanZ06

For autocrossing.....i don't know about anything else....

Rotating the struts is better than just adding a million shims.

PS...they didn't rotate your struts because they were too lazy

TTurbine

Do you have there suspension on your car or is it stock?

Maybe they dont recomended for cars fitted with there KW suspension?