ProjectS15 Posted November 1, 2008 Share Posted November 1, 2008 Here are the steps to doing the Bilstein Bump Stop Mod: http://i34.tinypic.com/e5fww2.jpg Ah, the Blistein HD Strut. http://i37.tinypic.com/25utbpc.jpg First start off by removing the nut at the bottom of the strut. http://i33.tinypic.com/ajte2c.jpg Once the nut is removed, UNSCREW the strut with a screw driver instead of a hammer. http://i35.tinypic.com/2ryjxur.jpg Once you unscrew the strut, you can simply pull the entire strut out of the shock housing. http://i37.tinypic.com/24qsh9v.jpg From there, you want to remove the Bump stop from the strut itself. http://i38.tinypic.com/10r1gt0.jpg Measure half the bump stop and then use whichever desired tool you have to cut this in half. http://i36.tinypic.com/2d7ec5d.jpg Once done cutting, put the bottom half of the bump stop back on to the strut and then reassemble the strut using the instructions to remove it in reverse. Proceed to either reassembling or assembling the strut itself with your choice of spring / top hat. From there, Do the other side and bam you are on your way to gaining that "BMW" ride quality. Link to comment Share on other sites More sharing options...
SBT Posted November 2, 2008 Share Posted November 2, 2008 TJ - very nice And thanks. Your Bilstein brothers all owe you thanks for the process/pictures. - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
Deaks2 Posted November 4, 2008 Share Posted November 4, 2008 Why would this be done? Link to comment Share on other sites More sharing options...
LGTfoLIFE Posted November 4, 2008 Share Posted November 4, 2008 ^^^ Link to comment Share on other sites More sharing options...
SBT Posted November 4, 2008 Share Posted November 4, 2008 Most people are installing lowering springs on their Bilsteins, i.e., Swift Sport Springs, or Tein H-Techs, which takes stroke distance away from the Bilsteins, and which ultimately puts the end of the strut 1-1.5" closer to the bumpstop. By removing part of the bump stop, you regain that strut travel, eliminate the "bump-up" from early bottoming out and smooth out overall strut operation. - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
MyWifezLEGi Posted November 5, 2008 Share Posted November 5, 2008 will this mod void bilstein warranty if new ? Link to comment Share on other sites More sharing options...
SBT Posted November 5, 2008 Share Posted November 5, 2008 will this mod void bilstein warranty if new ? And what is their new warranty? I think using other than stock springs would void the warranty... but that's just my initial thought - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
SW7RT Posted January 22, 2009 Share Posted January 22, 2009 After reading this thread I'm just curious if this mod removes some of the HD Bilstein harshness? I'm debating whether or not its worth the effort getting another alignment, money for the align, etc. I'm fine with a little bounce that happens when you hit the stop, but if it eliminated some harshness it would be worth taking the struts out again. Link to comment Share on other sites More sharing options...
Andreu Posted February 9, 2009 Share Posted February 9, 2009 so there is no real mess, all the oil is on the inside of that canister that your holding in your hand? HOw hard would you rate this mod. Link to comment Share on other sites More sharing options...
PeterJMC Posted February 9, 2009 Share Posted February 9, 2009 Are the rears done the same way? Link to comment Share on other sites More sharing options...
mickeyd2005 Posted February 9, 2009 Share Posted February 9, 2009 Are the rears done the same way? The rear bump stops are on the car. Unscrew it and cut it in half. Link to comment Share on other sites More sharing options...
PeterJMC Posted February 9, 2009 Share Posted February 9, 2009 The rear bump stops are on the car. Unscrew it and cut it in half. ohh duh i knew that! I'm dumb for asking a question I already knew the answer to. Link to comment Share on other sites More sharing options...
Kaos22B Posted February 9, 2009 Share Posted February 9, 2009 How are you guys liking the ride, stiffness, rebound, etc of these struts? I may get a set to complement my swifts. Link to comment Share on other sites More sharing options...
rs6er Posted February 9, 2009 Share Posted February 9, 2009 Is the mod the same for Spec B Bilstein struts? Also, it looked like the bump stop was made of three sections. After you cut it, were you left with 1 1/2 sections? Link to comment Share on other sites More sharing options...
SBT Posted February 11, 2009 Share Posted February 11, 2009 Is the mod the same for Spec B Bilstein struts? Also, it looked like the bump stop was made of three sections. After you cut it, were you left with 1 1/2 sections? Yes the mod is the same for Spec B Bilstein struts, or the JDM Bilstein struts for that matter too. TJ cut through the middle of the center section, effectively reducing the bump-stop length by half (or leaving 1.5 sections as you indicated). - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
Egan Posted February 21, 2009 Share Posted February 21, 2009 Any idea on the torque requirements for the re-assembly? What type of grease should be used when reinstalling the bumpstops and reinserting the strut? Is it possible to take too much out of the bumpstops? I'm going to be running Progress springs (claimed -1.3" up front) so is the 1/2 cut appropriate or should it be less? Thanks for the informative write-up! Link to comment Share on other sites More sharing options...
Spoonwacker Posted February 24, 2009 Share Posted February 24, 2009 Any idea on the torque requirements for the re-assembly? What type of grease should be used when reinstalling the bumpstops and reinserting the strut? [...] Thanks for the informative write-up! I'm curious about these issues, too... sorry...this forum practically blows goat nuts so im not always on here.Team Pony Express POSTED FROM MY COMPUTER USING A WEB BROWSER Link to comment Share on other sites More sharing options...
Kaos22B Posted February 26, 2009 Share Posted February 26, 2009 Ok, I need a set Where are you guys buying these? Also I apparently need Spec B tops? Why, I dunno. I hope the fact that I have swifts for my 05' doesn't cause issues with the install. Link to comment Share on other sites More sharing options...
Egan Posted February 27, 2009 Share Posted February 27, 2009 I'm curious about these issues, too... Bump for answers... Link to comment Share on other sites More sharing options...
Spoonwacker Posted February 27, 2009 Share Posted February 27, 2009 Ok, I need a set Where are you guys buying these? Also I apparently need Spec B tops? Why, I dunno. I hope the fact that I have swifts for my 05' doesn't cause issues with the install. I got mine from what's now Fred Beans Parts - http://www.fredbeansparts.com/servlet/the-987/Bilstein-Subaru-Legacy-GT/Detail sorry...this forum practically blows goat nuts so im not always on here.Team Pony Express POSTED FROM MY COMPUTER USING A WEB BROWSER Link to comment Share on other sites More sharing options...
Egan Posted February 27, 2009 Share Posted February 27, 2009 I got mine from what's now Fred Beans Parts - http://www.fredbeansparts.com/servlet/the-987/Bilstein-Subaru-Legacy-GT/Detail Me too. Link to comment Share on other sites More sharing options...
SBT Posted February 28, 2009 Share Posted February 28, 2009 Any idea on the torque requirements for the re-assembly? What type of grease should be used when reinstalling the bumpstops and reinserting the strut? Is it possible to take too much out of the bumpstops? I'm going to be running Progress springs (claimed -1.3" up front) so is the 1/2 cut appropriate or should it be less? Thanks for the informative write-up! See the how-to R&R the struts/shocks manual excerpts below. Includes torque specs for both the front and rear struts. WRT the grease, keep your work area clean and just capture the grease off of the bumpstop portion that you remove, add that back in to the strut base, and you should be good to go. Not sure of the spring rate on the Progress, but starting at the top of the middle layer would seem to be a good starting point, and I'd definitely not go below the halfway point on that section. Just make sure that where you cut it, you have a full-width cross-section at the top and bottom of the bumpstop before you put it back in.07 - Front Strut.pdf06 - Rear Shock Absorber.pdf - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
Egan Posted February 28, 2009 Share Posted February 28, 2009 See the how-to R&R the struts/shocks manual excerpts below. Includes torque specs for both the front and rear struts. WRT the grease, keep your work area clean and just capture the grease off of the bumpstop portion that you remove, add that back in to the strut base, and you should be good to go. Not sure of the spring rate on the Progress, but starting at the top of the middle layer would seem to be a good starting point, and I'd definitely not go below the halfway point on that section. Just make sure that where you cut it, you have a full-width cross-section at the top and bottom of the bumpstop before you put it back in. Thanks. I have the shop manual for my LGT, I was looking for the torque specs for putting the Bilstein strut back together once you've opened it up to do the bump stop mod (i.e. that nut on the bottom and the strut itself). Link to comment Share on other sites More sharing options...
SBT Posted February 28, 2009 Share Posted February 28, 2009 Sorry - forgot about that single nut. Here's a link to some bottom of the strut pictures for additional how-to clarity. There's no mention of the torque specs, but I'll keep looking. - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
Guest Posted February 28, 2009 Share Posted February 28, 2009 Hmm, I might even do on my stock height JDM Bilsteins to gain bit of travel. Link to comment Share on other sites More sharing options...
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