Pennock's Fiero Forum
  Technical Discussion & Questions
  88 with 1.5" drop spindles, do the bump stops need modification?

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
88 with 1.5" drop spindles, do the bump stops need modification? by cptsnoopy
Started on: 03-28-2014 03:24 AM
Replies: 9 (523 views)
Last post by: cptsnoopy on 03-29-2014 01:30 AM
cptsnoopy
Member
Posts: 2573
From: phoenix, AZ, USA
Registered: Jul 2003


Feedback score:    (8)
Leave feedback





Total ratings: 60
Rate this member

Report this Post03-28-2014 03:24 AM Click Here to See the Profile for cptsnoopyClick Here to Email cptsnoopySend a Private Message to cptsnoopyEdit/Delete MessageReply w/QuoteDirect Link to This Post
I'm using the Arraut Motorsports 1.5" drop spindles on my '88 project car and I'm looking for info regarding front tire to front fender contact using the stock front springs and bump stops. I am using a stock size front tire.

For those of you that have installed these drop spindles, have you needed to modify the bump stops to keep from having tire to fender contact?

Thanks in advance for your input.

Charlie
IP: Logged
PFF
System Bot
fieroguru
Member
Posts: 11411
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post03-28-2014 05:29 AM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
I don't have dropped spindles, but I did remove the front spring, shock and one sway bar end link to show where the 88 rests on the bump stops with some near stock diameter tires (205/50/16):




So if I had dropped spindles with by tires, they could possibly make contact with the fender on a really hard bump and I might need to raise the bump stop slightly (washer shim under it) or run slightly stiffer springs.

I would recommend you remove the springs/shocks on at least 1 side and check where they bottom out with the dropped spindle.

[This message has been edited by fieroguru (edited 03-28-2014).]

IP: Logged
carbon
Member
Posts: 4767
From: Eagan, MN
Registered: Apr 2004


Feedback score: (2)
Leave feedback





Total ratings: 133
Rate this member

Report this Post03-28-2014 10:08 AM Click Here to See the Profile for carbonSend a Private Message to carbonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Where can one get slightly stiffer springs in the stock size for an 88 Fiero?
IP: Logged
fieroguru
Member
Posts: 11411
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post03-28-2014 10:17 AM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by carbon:

Where can one get slightly stiffer springs in the stock size for an 88 Fiero?


Cut down some 84-87 front springs from a GT. Or find another spring that is too long, but right diameter/coil wire thickness and cut it down.
IP: Logged
cptsnoopy
Member
Posts: 2573
From: phoenix, AZ, USA
Registered: Jul 2003


Feedback score:    (8)
Leave feedback





Total ratings: 60
Rate this member

Report this Post03-28-2014 12:02 PM Click Here to See the Profile for cptsnoopyClick Here to Email cptsnoopySend a Private Message to cptsnoopyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thank you Paul!

Any chance that wheel/tire combo is still around to get a diameter measurement off of it?
I'll measure mine again, I am pretty sure mine is just under stock diameter by around 3/8"-1/2". That might end up being a good thing.

I really should remove the spring and sway bar to check it but I'm not wanting to now that it's together...
I checked it with the fender off while I was working with the end link clearance issues and there was clearance from the top of the tire to the frame rail but I did not record how much...

Charlie
IP: Logged
cptsnoopy
Member
Posts: 2573
From: phoenix, AZ, USA
Registered: Jul 2003


Feedback score:    (8)
Leave feedback





Total ratings: 60
Rate this member

Report this Post03-28-2014 12:16 PM Click Here to See the Profile for cptsnoopyClick Here to Email cptsnoopySend a Private Message to cptsnoopyEdit/Delete MessageReply w/QuoteDirect Link to This Post
My front wheel/tire diameter is 24.75".

Charlie
IP: Logged
TXGOOD
Member
Posts: 5333
From: Austin, Texas
Registered: Feb 2006


Feedback score:    (58)
Leave feedback





Total ratings: 87
Rate this member

Report this Post03-28-2014 12:44 PM Click Here to See the Profile for TXGOODClick Here to visit TXGOOD's HomePageSend a Private Message to TXGOODEdit/Delete MessageReply w/QuoteDirect Link to This Post
Normally dropped spindles don`t affect the suspension because all it is doing is putting the spindle stub further up on the spindle bracket.
As far as tire rub it could affect that.
IP: Logged
fieroguru
Member
Posts: 11411
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post03-28-2014 02:14 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by cptsnoopy:

Thank you Paul!

Any chance that wheel/tire combo is still around to get a diameter measurement off of it?


Yeah, I will get the diameter in a hour or two.
IP: Logged
fieroguru
Member
Posts: 11411
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post03-28-2014 03:58 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
My tires are 205/50/16 and right at 24" in diameter on 7x16 35et wheels. If yours are 24 3/4", then your tires will be 3/8" closer to the fender than I show.

Depending on the offset and wheel width you might be OK as long as the tire is about 1/4 to 1/2" inside the edge of the fender. I trim my bump stops down so I only have about a finger width of clearance between the inner fender and the top of the tire.

[This message has been edited by fieroguru (edited 03-28-2014).]

IP: Logged
cptsnoopy
Member
Posts: 2573
From: phoenix, AZ, USA
Registered: Jul 2003


Feedback score:    (8)
Leave feedback





Total ratings: 60
Rate this member

Report this Post03-29-2014 01:30 AM Click Here to See the Profile for cptsnoopyClick Here to Email cptsnoopySend a Private Message to cptsnoopyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thank you again Paul!

It looks like I'll have some rubbing issues if I don't shim the bump stops. It's because the drop spindles I'm using put the wheel out another 1/4" and I'm only using a 38mm offset on a 17x7 wheel. They stick out noticeably more than stock.

Charlie

[This message has been edited by cptsnoopy (edited 03-29-2014).]

IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock