illuminas + FM springs + FCM bumpstops = really bumpy??? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 11-26-2008, 04:07 PM   #1
Junior Member
Thread Starter
 
Join Date: Aug 2008
Location: Cerritos, SoCalifornia
Posts: 86
Total Cats: 0
Default illuminas + FM springs + FCM bumpstops = really bumpy???

I have a 91 with a tokico illumina + FM springs + FCM bumpstops.

the ride has been extremely harsh since the first day i installed them. I think i am missing some rubber bushings in the shock assembly. Does anyone have a diagram on the order of which the assembly on the shock should be? Also, what is this i hear about using NB shock mounts on NA for better suspension travel? If i am missing some parts due to the harsh ride and i have to buy some, might as well buy NB parts for an even better result right?

THanks in advanced...
harmsway102205 is offline   Reply With Quote
Old 11-26-2008, 04:14 PM   #2
Junior Member
Thread Starter
 
Join Date: Aug 2008
Location: Cerritos, SoCalifornia
Posts: 86
Total Cats: 0
Default

ALSO, I am willing to purchase anything to make the ride better, open to ALL SUGGESTIONS.
harmsway102205 is offline   Reply With Quote
Old 11-26-2008, 04:36 PM   #3
Elite Member
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

From what I have read, you are probably pretty hard on the bumpstops. The NB top hats will get you back about 1" of suspension travel when they are installed on a NA.

Generally, used NB top hats are around $70 for the set when you can find them.
Stein is offline   Reply With Quote
Old 11-26-2008, 10:01 PM   #4
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Are these first or second gen FM springs?

Have you tried setting the shocks on full soft initially?
JasonC SBB is offline   Reply With Quote
Old 11-26-2008, 10:20 PM   #5
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,578
Total Cats: 40
Default

Something's wrong, your ride shouldn't be that bad with such soft springs and adjustable shocks.
kotomile is offline   Reply With Quote
Old 11-28-2008, 10:55 PM   #6
Elite Member
iTrader: (24)
 
Join Date: Jun 2007
Location: Sherman Oaks, CA
Posts: 4,481
Total Cats: 3
Default

fm springs sit you too low for NA top mounts. you need to get NB top mounts and set your shocks to 1 click from softest front and 2 clicks from softest rear. trust me - you wont regret it. thats what i was running on my previous car. also, if you use rb front bar and no rear bar, your car will become very very neutral in corners.
UrbanSoot is offline   Reply With Quote
Old 11-29-2008, 01:27 AM   #7
Junior Member
Thread Starter
 
Join Date: Aug 2008
Location: Cerritos, SoCalifornia
Posts: 86
Total Cats: 0
Default

they are 2nd generation FM springs.

I notice a popping sound when i make full U-turns and im thinking its something with the sway bar or the tie rod clanking possibly?

i was thinking of buying NB top mounts but i havnt had the time to look around.
anyone know where i can buy the top mounts?
harmsway102205 is offline   Reply With Quote
Old 12-01-2008, 11:46 PM   #8
Junior Member
Thread Starter
 
Join Date: Aug 2008
Location: Cerritos, SoCalifornia
Posts: 86
Total Cats: 0
Default

ok so heres an update:
I still here that popping/clanking sound on U-turns and when i'm going up my driveway. I looked under the car and noticed some things that didnt look normal. Could this be the problem? Here are some pics...

http://img.photobucket.com/albums/v3...n/IMG_1903.jpg
http://img.photobucket.com/albums/v3...n/IMG_1904.jpg

^^ Thats the front right tire, mostly where i hear the weird sounds. ^^

http://img.photobucket.com/albums/v3...n/IMG_1902.jpg
http://img.photobucket.com/albums/v3...n/IMG_1840.jpg

^^ and thats the front left tire, that didnt look right either.

Suggestions anyone?
harmsway102205 is offline   Reply With Quote
Old 12-02-2008, 01:06 AM   #9
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Quote:
Originally Posted by UrbanSoot View Post
fm springs sit you too low for NA top mounts. you need to get NB top mounts
I'll +1 that sentiment. Actually, when I first installed my FM springs / Bilsteins / NB tophats / FCM 46mm stops combo, I found that the stops were very nearly touching even at rest. I lathed up a set of 3/8" spacers to raise up the spring perches just a tad, which gave me back some space.

Granted, your Illuminas are just an RCH shorter than my Bilsteins, but the NB upper mounts are still a great idea. If you don't want to fuss with locating and modifying junkyard parts, Shaikh has them (brand new) and ready to bolt-in to the NA with no mods required: Fat Cat Motorsports - Tokico products - Miata - 90-97 (and I see that he's now got upper spacers as well- same basic concept as what I did, only on the spring itself and at the top.)
Joe Perez is offline   Reply With Quote
Old 12-02-2008, 10:09 AM   #10
Elite Member
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

Quote:
Originally Posted by harmsway102205 View Post
ok so heres an update:
I still here that popping/clanking sound on U-turns and when i'm going up my driveway. I looked under the car and noticed some things that didnt look normal. Could this be the problem? Here are some pics...

http://img.photobucket.com/albums/v3...n/IMG_1903.jpg
http://img.photobucket.com/albums/v3...n/IMG_1904.jpg

^^ Thats the front right tire, mostly where i hear the weird sounds. ^^

http://img.photobucket.com/albums/v3...n/IMG_1902.jpg
http://img.photobucket.com/albums/v3...n/IMG_1840.jpg

^^ and thats the front left tire, that didnt look right either.

Suggestions anyone?

RF is your upper ball joint boot. The ball joint should be replaced and may be the problem.

LF is the steering rack boot. The steering rack may be OK and you just need to replace the boot. Grab the tie rod where it goes into the rack and try to move it around to see how much play there is. Also, with the car on the ground, how much play is there in the steering wheel before the wheels start to turn?

Finally, with the car on the ground, push inwards and pull outwards on the top of the tire firmly, feeling and watching for any movement other than squishing on the tires. You are looking for bad wheel bearings. This won't be the cause of your noises, but something you should look at.

How many miles on the car? My old 90 had 225K and was a bit loose on steering.
Stein is offline   Reply With Quote
Old 12-02-2008, 06:17 PM   #11
Junior Member
Thread Starter
 
Join Date: Aug 2008
Location: Cerritos, SoCalifornia
Posts: 86
Total Cats: 0
Default

can anyone else elaborate on the pics i provided?
well it looks like im gonna need an upper ball joint boot?
where can i buy one of those online?
harmsway102205 is offline   Reply With Quote
Old 12-04-2008, 11:45 AM   #12
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Quote:
Originally Posted by harmsway102205 View Post
well it looks like im gonna need an upper ball joint boot?
where can i buy one of those online?
Finish Line / Rosenthal Mazda :: Miata / MX-5 :: Suspension :: Ball Joint Boot - Upper
Joe Perez is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:28 PM.