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Old 12-28-2007, 07:24 PM   #1
skydes
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Default Regreasing STi struts

Finished The Job. Scroll Down For Some Tips.


Since this thread is part of a FAQ, I'll include some more helpful information:

Disassembly and assembly instructions: http://www.scoobymods.com/forums/showthread.php?t=6054 (registrations required)

Tools I used:
-Air compressor and Impact wrench (not required)
-14mm socket
-Spatula
-Torque Wrench

Materials I used:
-Mobil 1 Sythetic Red Grease
-Disposable Shop Towels (Lots and lots of them, greasing is messy business)

Other helpful stuff:
-A good hand cleaner like Gojo or Fast Orange really helps when you gotta get all the grease off your hands.
-Small flashlight. When doing the deep greasing, it helps to shine a flashlight down to see if you've missed any spots.

Torque specs:
-If you look at the Prodrive bumpstops PDF, they say that the torque spec for the nut at the bottom of the strut is 40 Newton-meters. This is approximately 30 Ft-lbs. When finally torqueing that nut back down, a vice with soft jaws would help, but I just used a chair, creatively.

TIPS:

-When cleaning out the old grease, use a small spatula for the grease furthest away. You won't be able to get the grease farthest in, but you'll be able to go in a good 8 inches with a spatula.

-Try to avoid using your finger to clean out the old grease. I cut my finger somewhere while doing it and it bled for a while. Use a piece of shop towel on your finger and swab that way.

-When you're done packing grease into the strut, you'll want slide the insert in with the bumpstop a good 8 inches. If you keep the bumpstop dead center, the bumpstop will help pick up the excess grease. Pull it out, clean the bumpstop, and then slide insert in all the way making sure to keep it absolutely dead center. If you don't keep it center, you could end up scraping the wall of the housing and picking up grease on the bottom of the bumpstop.

-MAKE SURE that when you finally slide the insert back in all the way that you rotate the insert until it slots into the buttom of the housing. You'll know it's slotted in when you cannot rotate it any more.
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Last edited by skydes; 01-03-2008 at 04:21 PM.
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Old 12-28-2007, 09:15 PM   #2
kodiaksti
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good or bad ive got an 06 sti and started to get a clunk in the lh rear strut. i bought a can of white lithium grease, jacked up the car till the wheel was off the ground, went behind the wheel, pulled up the dust boot and sprayed for couple seconds. quick fix i know but havent heard anything in 8k miles and it took all of 3 minutes.
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Old 12-28-2007, 09:53 PM   #3
skydes
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I'm trying to go for a more thorough fix right now with repacking the grease.

Thanks for the input though.
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Old 12-28-2007, 09:53 PM   #4
Fred
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Quote:
Should I scrape out as much of the old yellow grease as possible and then pack in some mobil 1 grease?
Yes.

Quote:
Or should I have bought a different grease?
No clue. What kind of grease is it?
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Old 12-28-2007, 10:37 PM   #5
skydes
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It's mobil 1 synthetic red grease.
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Old 12-29-2007, 09:06 AM   #6
Turn in Concepts
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That grease will be fine. I have used several different kinds of grease when repacking and all have outlasted the stock grease and kept the clunking away. Clean out all of the old crap, clean out the struts completely, do a quick spray with white lithium grease inside, then repack the grease traps with the new grease. You should be good for a long time.
Tony
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Old 12-29-2007, 08:05 PM   #7
skydes
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^^^Thanks. It's going to be a big hassle getting all the old grease out that is farther in the housing. Any tips?
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Old 12-29-2007, 09:13 PM   #8
Zornorph
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how is this done - any links to how to take the struts apart to grease them?
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Old 12-29-2007, 10:16 PM   #9
skydes
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Yes. Google prodrive bumpstop pdf. that will tell you how to take apart the strut. From there, you should clean out as much of the old grease as you can and then pack in new grease. It's a messy process.
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Old 12-30-2007, 09:59 AM   #10
Fred
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I use a small plastic spatula to remove the old grease and to put in the new grease.
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Old 12-31-2007, 12:41 PM   #11
ten80
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Synthetic/lithium grease is usually best from my experience. Axle or bearing grease is too thick and will not allow for smooth operation. If the grease feels slick between your fingers rather than sticky, then it is likely suitable. I've had good luck using Napa lithium and various mountain bike synthetic fork greases for STI struts. No clunks in any of the four sets I have re-greased!
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Old 12-31-2007, 10:40 PM   #12
skydes
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Ok I finished repacking my struts with grease today. See original post.

Good luck.

Last edited by skydes; 01-03-2008 at 04:24 PM.
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Old 12-31-2007, 11:05 PM   #13
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bah. Should have taken pics. Nice job though.
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Old 01-01-2008, 12:28 AM   #14
dexterous
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Anybody have picts? I have a set coming that I bet need greased.
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Old 01-01-2008, 12:51 AM   #15
skydes
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Google prodrive bumpstops pdf. Follow that and it's pretty self-explanatory.
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Old 01-03-2008, 04:24 PM   #16
skydes
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I've updated the original post to help people who still might be confused on what to do.
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Old 01-03-2008, 05:01 PM   #17
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Thanks, good writeup
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Old 02-23-2008, 02:27 AM   #18
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How long does this keep the problem at bay?
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Old 02-23-2008, 03:15 PM   #19
skydes
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No one can say for sure.
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Old 02-24-2008, 08:10 AM   #20
SimonJ
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I did the simple jack up and spray method under the dust boot. I did that last September and haven't heard a squeak since, even during a harsh Canadian winter
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Old 02-24-2008, 03:29 PM   #21
wrxman71
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How much grease do you put in?
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Old 02-24-2008, 09:28 PM   #22
skydes
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Do not put in too much grease. You basically want to make the inside of the housing level with grease.

Last edited by skydes; 02-24-2008 at 11:16 PM.
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Old 04-16-2008, 01:46 AM   #23
MindzeyeWRX02
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i was getting worried about clunking issues i've heard about the sti struts. glad to see your post.

Last edited by MindzeyeWRX02; 04-17-2008 at 02:38 AM.
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Old 04-16-2008, 11:16 PM   #24
MindzeyeWRX02
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I just purchased a set of 04 sti take off suspension from the forum. I want to do this as a preemptive measure against clunking.

How much grease do i put in there?? all along the inside wall of the strut housing all the way down and thick enough for the bumpstop to pass??

and is the Amsoil grease any good?Synthetic Water Resistant Lithium Complex Grease
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Old 04-17-2008, 03:32 PM   #25
MindzeyeWRX02
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^^ any help would be appreciated.
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