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Budget Bumpstops
Blew a rear shock on the POSIV and it was driving worse and worse. Other items are a priority now so no budget for the car.
So I went down to Mazda Nissan Heaven and found a couple of '93 LE Bilstiens for $40.00 they aren't leaking so they look better than what I have.
Here is my question the bumpstops on the Bilstiens are toast, but I have a set of NB bumps stops, can I put these on the NA shocks and make my own TCB Fatcatish style setup?
More Stuff (Big picture - sorry)
Not sure how much travel you would have without the NB shock hats at the same time. If you could find those you would definitely have a decent ride.
Mix 'n' match the bumps? Sure, since you've already got 'em handy. However, you might find that your rear ride height is a bit lower than OE when using NA Billies...even on NA top hats. Shorter shock body and all that.
What year is the IV again? If you happen to have 96-97 rear springs handy, they seem to lend themselves to a taller ride height than earlier springs, which might level things out.
'90 "LE" available for purchase soon
2008.5 CWP MS3: JBR 70d trilogy engine mounts, short throw shifter & shift plate bushings; AST 4100 w/ 400lb springs f/r; JRZ camber plates
The POSIV is a '94
Here is one of the bumpstops off the Stiens it is toast.....
Here are one of my NB bumpstops.
The fat cat bumps for the LE and R Bilsteins are 46mm for the rear. It's not the length on the FCM it's the material. That being said, almost anything will work as a temp fix until you get your priorities straight.
Stripe Das Sape
We are leading the world to democracy by example.
Yea I know the material are different figure the 58 mm lengh of the NB bumpstops should give me more than enough protection from wedging them down, I hope....Originally Posted by creek
TCB $40.00 rear Bilstien shocks FTW!! IMHO my priorities are perfectly aligned.
True. The NA bumps have a steel washer molded into the top that fits over the ring.Does the NB? If not I think you will need a 10mm fender washer between the ring and the tophat for the NB bumps. Good luck.
Stripe Das Sape
We are leading the world to democracy by example.
i got 4 new foam bumpstops from resuspension.com new for like $40...I'd recommend them to anyone :)
David Hedderick
Houston, TX
92 Miata SE; 02 RSX-S; 01 Boxsturd; 05 STI
OK so got all the parts bolted in the POSIV and took her for a spirited run. Man the old shocks must have been really bad it is a huge difference on what I had before.
Ran across some speed bumps and hit a couple of dips at speeds higher than I'd normally travel and the NB's bumpstop took all I could give it and just kept going. (The fronts were thrilled but hey what can ya do)
OK so it is picture time!
Here is only decent bumpstop to come off the back of the car vs. the NB stop. The measure virtually the same height, but the original is cracked and compacted from what a new one should be.
Creek Brought up the possible need for a fender washer but the NA hat didn't appear to need one. I did take the original washer of the old bumpstop and used it and as you can see there is a decent surface for the bumpstop to ride on.
Old vs. New(er)
Installed
I didn't use a boot for 2 reasons
1. I didn't have one
2. I can see if I any issues easier.
Looks good. I think the washer is really to keep the ring from wearing/punching a hole through the tophat on a square edged pothole. I am thinking about going with the FCM spec Miata NB tophat conversion.
http://fatcatmotorsports.com/igaller..._MT_KIT_SM.JPG
If I do you can have my old FCM stops.
Stripe Das Sape
We are leading the world to democracy by example.
Sweet! I'll take em.
Wife and I drove around for a nice long ride this afternoon the car rides much better!
Update just won a set of front Bilstiens off a R package Miata on Ebay and with the addition of Creek's FCM setup I'm anxiously awaiting to see the results!
The rears have been working great no issues at all and the car rides and autocrosses better than before! Yipie!
Last edited by POS Racing; 04-17-2010 at 08:40 AM.
https://www.resuspension.com/cart/home.php?cat=334
These look a lot like the FCM bumpstops!
Yes it is Back from the dead! The POSIV on hard turns has been rubbing the top of the front fender liners since I finished the last round of budget bumpstops.
And now I'm pretty sure I got a something going on with one of my rear bilstien shock now...
So I'm rethinking my current setup still love the Bilstiens just don't like all the scraping and grinding considering this sucker is riding on its OEM springs!
POS Racing, I might have 2 of these at home. Let me know if they will work, I can bring them to the next autocross for you.
Alan
94 Miata R package RPF1 195 RS-R RB FSB FCM Bilstein Ebay Coilover 550/350
91 Civic Si Daily Beater
"Its more fun to drive a slow car fast, than it is to drive a fast car slowly".
Now that you told everyone on the internet what you have done.
What about reading the rules.
I could not tell from the picture. Is the top of the
spring riding on metal or a rubber pad?
13.5
D. A suspension bump stop is considered to be performing the function
of a spring. Therefore, the compressed length of the shock at the
initial point of contact with the bump stop may not be increased from
the standard part, although the bump stop may be shortened for the
purpose of installing non-standard shocks. Bump stops installed ex-
ternally and concentric with the shaft of a shock may be drilled out to
fit a larger diameter shock shaft. Bump stops may be substituted for
the purposes of installing non-standard shocks.
Cheater car!
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