home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > performance & modifications

Reply
 
Thread Tools Display Modes
Old 11-10-2020, 08:39 AM   #1
DaveD
Board Member
 
DaveD's Avatar
 
Join Date: Nov 2011
Location: New Jersey
Default Koni race 8610

I blew my second set of koni 8610 fronts drifting this weekend. Our track is definitely bumpy, but no major impacts or bottoming out, going off track etc. 450lb springs. Is this normal? Don’t even have a full season on these. Is there any better options at this point without completely redoing my front coilover setup?
DaveD is offline   Reply With Quote
Old 11-10-2020, 11:19 AM   #2
SkeTchy-MechAniC
Board Member
 
SkeTchy-MechAniC's Avatar
 
Join Date: Jun 2020
Default

If you do some searching on the koni's you'll find they kind of suck .. That's why most chose for bilsteins.
__________________
Never have i ever .... Seen a 242 with two motorcycles in the back
SkeTchy-MechAniC is offline   Reply With Quote
Old 11-10-2020, 11:29 AM   #3
blkaplan
50 shades of beige
 
blkaplan's Avatar
 
Join Date: Jul 2002
Location: Rockville, MD
Default

I'm guessing you have something wrong with your setup. I have had them survive bent control arms and wheels.
__________________
www.BEIGEPOWER.com
Kaplhenke Racing Facebook
Quote:
Originally Posted by DarkKratoz View Post
The only safe bet is Ben.©
blkaplan is offline   Reply With Quote
Old 11-10-2020, 12:07 PM   #4
DaveD
Board Member
 
DaveD's Avatar
 
Join Date: Nov 2011
Location: New Jersey
Default

So what could be wrong, setting too soft so maybe it is bottoming out and I don’t realize? Thinking about going to 550# front springs to keep the front a little flatter anyways, would the stiffer rate reduce the work the strut is doing? I have extended arms, kaplhenke camber plates, kaplhenke qsrc 450lb springs currently
DaveD is offline   Reply With Quote
Old 11-10-2020, 12:11 PM   #5
DaveD
Board Member
 
DaveD's Avatar
 
Join Date: Nov 2011
Location: New Jersey
Default



You can see here body roll onto leading wheel
DaveD is offline   Reply With Quote
Old 11-10-2020, 12:16 PM   #6
blkaplan
50 shades of beige
 
blkaplan's Avatar
 
Join Date: Jul 2002
Location: Rockville, MD
Default

My guess is you are binding the suspension which is wearing out the strut.

It could be your lower control arms, if they aren't designed correctly. they could definitely **** up your struts.
blkaplan is offline   Reply With Quote
Old 11-10-2020, 12:21 PM   #7
DaveD
Board Member
 
DaveD's Avatar
 
Join Date: Nov 2011
Location: New Jersey
Default

I mean it self steers lock to lock flawlessly drifting, no bump steer, don’t see how anything could be binding. I also know the struts are not at any crazy angles.
DaveD is offline   Reply With Quote
Old 11-10-2020, 01:36 PM   #8
culberro
Ronald Culberbone III
 
culberro's Avatar
 
Join Date: Feb 2010
Location: Portland, OR
Default

Is the nut and strut top binding in the upper spherical at all? I had to make some spacers to place the top strut nut above the top of the strut mount due to the caster that I'm running on my drift 244.

Also, why such high rates? I drift at some rough tracks and I'm running 250 lb/in springs (bilstein HDs) with a v8 in the front. You also might try raise your car up a smidge... you'll get more grip. My car is probably over an inch higher.
__________________
Cult Person. Pissing in your Kool-Aid.
culberro is online now   Reply With Quote
Old 11-10-2020, 02:42 PM   #9
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Quote:
Originally Posted by culberro View Post
Also, why such high rates? I drift at some rough tracks and I'm running 250 lb/in springs (bilstein HDs) with a v8 in the front. You also might try raise your car up a smidge... you'll get more grip. My car is probably over an inch higher.
Why such soft rates!?
klr142 is offline   Reply With Quote
Old 11-10-2020, 03:04 PM   #10
culberro
Ronald Culberbone III
 
culberro's Avatar
 
Join Date: Feb 2010
Location: Portland, OR
Default

Quote:
Originally Posted by klr142 View Post
Why such soft rates!?
Because I'm turning into an old man, and I like grip
culberro is online now   Reply With Quote
Old 11-10-2020, 03:18 PM   #11
redblockpowered
cone dodging dilettante
 
redblockpowered's Avatar
 
Join Date: May 2015
Location: In bed, probably
Default

Quote:
Originally Posted by klr142 View Post
Why such soft rates!?
Mechanical grip!
__________________
1993 944 B230FT/M90 thread here: http://forums.turbobricks.com/showthread.php?t=345277
2x 1991 245 B230F/M47 (LeMons car, street car)
I sell chips for LH 2.4!
redblockpowered is offline   Reply With Quote
Old 11-10-2020, 03:58 PM   #12
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

That's like a factory spring rate if they made a modern 240. As long as you have the travel to keep from bottoming out and don't need/want any more roll stiffness, it's fine!
klr142 is offline   Reply With Quote
Old 11-10-2020, 05:40 PM   #13
mikep
The MP
 
mikep's Avatar
 
Join Date: May 2003
Location: 38° 27' N 75° 29' W
Default

No way would a modern 240 need more than 200#.

Quote:
Originally Posted by DaveD View Post
would the stiffer rate reduce the work the strut is doing?
In compression yes, in rebound no.
__________________
Quote:
Originally Posted by leecatd8209 View Post
Being dead has a funny way of messing up your small business, too.
mikep is offline   Reply With Quote
Old 11-10-2020, 05:47 PM   #14
gsellstr
Vintage anti-ricer
 
gsellstr's Avatar
 
Join Date: Oct 2004
Location: Somewhere in a northern California smog bank
Default

Quote:
Originally Posted by SkeTchy-MechAniC View Post
If you do some searching on the koni's you'll find they kind of suck .. That's why most chose for bilsteins.

Depends man. Quite a few have gone the other way as well, due to ride issues. Personally, had solid luck with the Koni's but not on springs that stiff. 200k on the R, 80k up front on my wagon before one developed a leak, warrantied it out, rear's are over 100k...
__________________
RIP
Doug Williams "Mr. Doug" 4/15/2009
Pete Fluitman "fivehundred" 7/14/2013
Mick Starkey "TrickMick" 1/10/14
Mark Baldwin "blue850t5" 7/19/18
Nick Fengler "fengler" 8/6/18
Thomas Fritz "stealthfti" 10/11/18


74 144 B20
http://forums.turbobricks.com/showthread.php?t=224983

90 745Ti
http://forums.turbobricks.com/showthread.php?t=334698

If you need Superpro bushings PM me for price and availability!
gsellstr is offline   Reply With Quote
Old 11-10-2020, 06:06 PM   #15
DaveD
Board Member
 
DaveD's Avatar
 
Join Date: Nov 2011
Location: New Jersey
Default

Just double checked everything, no binding anywhere(I have kaplhenke strut tops and Torrington bearings under the springs), strut is at a good angle, control arms and tie rods are parallel...just gonna write it off as a blown seal from bumpy track for now....passenger side is actually not blown just driver side
DaveD is offline   Reply With Quote
Old 11-10-2020, 06:22 PM   #16
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

I’ve had a few racing buddies have Koni strut/shock failures with very little use on them, but who knows their specifics.
Quote:
Originally Posted by mikep View Post
No way would a modern 240 need more than 200#.
Haha, yes I’m sure, but 250lb springs are also pretty soft is all I was getting at. Good for a street car or something that can absorb a lot as long as the travel is there.
klr142 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 01:30 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.