Josh Wimpey Josh Wimpey Ultra Moderator Location: VA Join Date: 12/27/2006 Age: Midlife Crisis Posts: 649 Rally Car: Sneak the Golf |
Take some pics so we can see.
Car at static ride height Suspension at full-droop Struts etc What is the overall uncompressed length of your struts from upper knuckle bolt to top of upper spring perch? Something fishy going on here as I am with Wildert 90% of failures come from not controlling the position of the motor/trans adequately ____________________________________________________________- One. Class -- 2WD www.quantumrallysport.com http://www.facebook.com/home.php?#/pages/Quantum-Rally-Sport/281129179600?ref=nf |
john vanlandingham John Vanlandingham Mega Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Very suspicious conclusion... Many many guys have more overall travel, and presumably more droop.. I highly suspect the things are simply too long in LOA length Over All. Or something. I suspect further that to get the car to sit somewhat correct you've sunk the thing down to so point (at which position it has very little compression travel) so it "looks like" it has a whole bunch too much droop... But who really knows.. This is one of those things which cannot be solved by talking about and might be solvable with tape measures, or rulers..and photos... So at this point, despite lots of talk/typing...who knows what's up? I thought getting suspension lengths and the "up/down" balance was the critical thing but I've been wrong often before---I know now that having knobs to twist to "tune" the damping is more important than travel, valving, match spring rates etc.. Have you tried Left Foot Braking? That is officially the solution to everything. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
DexterVW David Baker Mod Moderator Location: Rhode my Island Join Date: 11/20/2008 Age: Midlife Crisis Posts: 290 Rally Car: 95 GTI TDI |
I will measure that all up for you tonight gentlemen.
for now.. static ride height picture. (btw I have measured this all before and come to the conclusion I need the long plunge CV's but I'll entertain you all with real numbers on the screen) Edited 1 time(s). Last edit at 07/07/2015 01:22PM by DexterVW. |
Josh Wimpey Josh Wimpey Ultra Moderator Location: VA Join Date: 12/27/2006 Age: Midlife Crisis Posts: 649 Rally Car: Sneak the Golf |
What size tires are those? It looks pretty/really tall up front to me.
____________________________________________________________- One. Class -- 2WD www.quantumrallysport.com http://www.facebook.com/home.php?#/pages/Quantum-Rally-Sport/281129179600?ref=nf |
danster Haggis Muncher Mod Moderator Location: Haggisland UK Join Date: 01/04/2013 Age: Possibly Wise Posts: 409 Rally Car: VWs (for my sins) |
Did you try changing back to the proper mk3 GTI / VR 5 stud shafts which are approx 5 - 8mm shorter than the 4 stud TDI shafts?
You say you need more plunge, yet you chose to fit shafts that were longer than the ones designed for the 5 stud application... The thread needs some appropriate music. Disappointingly not yet a Jackass |
DexterVW David Baker Mod Moderator Location: Rhode my Island Join Date: 11/20/2008 Age: Midlife Crisis Posts: 290 Rally Car: 95 GTI TDI |
Yup, i've tried both combo's and even a mk4 shaft on the drivers side for a giggle
I think the fact the suspension droops another 1/4 inch after I unbolt the inner CV proves my point but you know I can continue to be told I need shorter shafts till the cows come home. Dave |
danster Haggis Muncher Mod Moderator Location: Haggisland UK Join Date: 01/04/2013 Age: Possibly Wise Posts: 409 Rally Car: VWs (for my sins) |
Are there witness marks on the output flange from where the inner CV may be contacting it?
As others have mentioned the car does look pretty "lifted" from the pics, and that may mean the shafts are outwith normal designed parametetrs of movement. I would have thought the engine side shaft would be contacting the subframe if there was to much droop though. Disappointingly not yet a Jackass |
Josh Wimpey Josh Wimpey Ultra Moderator Location: VA Join Date: 12/27/2006 Age: Midlife Crisis Posts: 649 Rally Car: Sneak the Golf |
OK, just so we are all speaking the same language here. The fact that your suspension droops more after unbolting the inner CV means you have run out of CV extension. Yes, I know this is the same as plunge but backward as the CV is symmetrical. Anyway, --at least at current height --- you need LONGER shafts to keep the CVs from pulling apart at full droop. Is that all correct? For me, this brings up more questions: --What position is your ball joint in relation to the slotted holes in the control arm? --What are you using for control arm bushings or bearings? --What is the stroke of your front struts? --What is the compression of said struts at static height? ____________________________________________________________- One. Class -- 2WD www.quantumrallysport.com http://www.facebook.com/home.php?#/pages/Quantum-Rally-Sport/281129179600?ref=nf |
danster Haggis Muncher Mod Moderator Location: Haggisland UK Join Date: 01/04/2013 Age: Possibly Wise Posts: 409 Rally Car: VWs (for my sins) |
You could determine whether it is drive shaft length, or excessive CV angular articulation that is causing the issue by the following simple test.
Check if you get full droop with full steering lock applied. (whilst checking left side, turn steering full left, and checking right side, turn steering full right) Reason being is the 5 stud setup by design plunges the drive shaft inwards approx 8mm when full lock is applied due to the bottom ball joint being off the centreline of the strut. If the drive shaft is too short and restricting full droop, then applying steering lock effectively lengthens the shaft and should release any restricted droop. If the drive shaft is too long it will bind more when you try to apply steering lock. And to add, there are also some really shit quality reconditioned CVs on the market so another thing in the mix. Disappointingly not yet a Jackass |
DexterVW David Baker Mod Moderator Location: Rhode my Island Join Date: 11/20/2008 Age: Midlife Crisis Posts: 290 Rally Car: 95 GTI TDI |
Yes that is correct. -The ball joints are sucked all the way in. -bushings are R32/TT -7 inches -3.5 inches compressed at static height (as seen in above photo) I'm racing in the Okemo hillclimb this weekend and decided that I should try to lower it down to see if I can save these CV's.. low an behold they got a lot quieter. I dropped it an inch all around and have another 1/2 inch to go on the threads. John... struts are 18.5 inches from the upper spring perch to upper knuckled mounting bolt at full droop. what else did I measure.. oh yeah at full droop the short cv is at 20 degrees and the long axle touches the subframe. |