» Site Navigation | | » Recent Threads | | looove 04-16-2024 01:18 PM 04-16-2024 01:18 PM 0 Replies, 1,627 Views | | | | | | 11-29-2006, 09:48 PM | #1 | Senior Member Join Date: Nov 2004 Location: Minneapolis Posts: 1,587 | Cheap Hatch Strut/Support Alternative!? I found a possible, good alternative to the factory hatch supports. As some of you know they can be quite pricey (>$60 a pair). I knew there had to be a cheaper alternative. I measured my lift supports at 23.5" extended (596mm, matches realoem.com) and 16.5" compressed. A 7" travel. I set out searching for other vehicles with similarly sized supports. What I found was a 23" extended (582mm, matches shorter realoem.com option), and 16" compressed strut. 7" of travel again. Realoem.com data: http://www.realoem.com/bmw/showparts...60&hg=41&fg=60 They are from a 97-01 Chevy Blazer / GMC Jimmy / Oldsmobile Bravada. 4 Door, w/ Lift gate. It looks like the 2 door version uses a different strut, and the 4 door version also has smaller struts for the hatch lift window. Mighty Lift C95769 Stabilus (Sachs) SG230031 Strong Arm 4287 (same as Mighty-Lift?) I bought the Mighty Lift pair for $15.99/ea at AutoZone. $34.06 total w/tax. The Sachs ones are available at www.rockauto.com for $14.10 each, but with shipping the total was $34.88. I installed them and they work just fine! The pivot ball end-links must be one industry standard size, because they fit just fine. OK, there is one concern, the pressure. While the Blazer hatch isn't huge, im sure it weighs more than the 318ti hatch, thus requiring a stronger support. Pulling the hatch down does require some effort with one hand, but it's nothing outrageous. Also, the hatch sticks up rather firmly, but again I don't think it's excessive. I'm gonna definitely keep an eye on it though. Another note; one new Blazer support will definitely NOT support the full weight of the hatch, so I don't think they're massively strong. ***Keep in mind my shocks have been almost completely dead for 3 years, so I have no idea how strong they're supposed to feel.*** Well just my observation, and I won't guarantee they won't wreck anything | | | 11-29-2006, 09:55 PM | #2 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | NICE WORK! Excellent post. I need some new hatch struts, I'll pick up a set of these and give them a try. __________________ '99 Dinan M3 | | | 11-30-2006, 04:25 AM | #3 | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 | I have new BMW ones installed, but the wing and rear wiper make the hatch excessively heavy. It stays up fine when it is warm, but cold it can sometimes slowly start to loose it until the weight takes over and it closes itself, as the worn ones did without the wing. I'm getting a set of these lifts and trying them out. If it takes some effort to close the hatch (you did not mention a wiper and/or spoiler) with a stock hatch, they should be just right with the added weight of the wing on my hatch. I am a bit concerned about the shorter length. I'm 6'2" tall, and if the hatch is lower when open this might be a pain in the skull... If they work well, I will post the results... | | | 11-30-2006, 04:58 AM | #4 | Senior Member Join Date: Nov 2004 Location: Minneapolis Posts: 1,587 | Ah yes. I have a rear wiper, but no wing. I did find a set that was actually cheaper, and longer. They are 24" Extended, and 17" compressed, so .5" longer than stock. Same 7" travel. They belong to a 92 (and earlier?) Ford Aerostar. There are two versions, one for a rear wiper and one without the rear wiper. But after looking at pictures of the Aerostar hatch, it seems quite massive, even compared to a Blazer. My guess is it would be too strong. Rockauto has the version w/o the wiper for $13.86. It's Sachs/Stabilus #SG204006. EDIT: I measured the hatch latch protrusion to the ground at 66.75" (car's not lowered). I didn't measure it before, but it doesn't seem any lower. Also, it's 11F outside and the hatch firmly stays up. | | | 11-30-2006, 05:40 AM | #5 | Senior Member Join Date: Aug 2006 Location: maritimes Posts: 1,433 | thank you thank you thank you thank you thank youuuuu!!! ive been in dire need of some new struts but was avoiding the $60 replacements at all costs! __________________ 11/97 Base 328Ti | | | 11-30-2006, 08:31 AM | #6 | That's not Millpoint Blue Join Date: Apr 2005 Location: BNA Posts: 3,161 | Oh gee, that's some great timing. I just ordered a pair of struts on TUESDAY for $37 each (dealer price was $44 each). That is the story of my life. LOL Seriously though... thanks for doing the research! __________________ Real men know how to SEARCH! THIS IS A MILLPOINT BLUE INTERIOR Mods 'n' stuff: Star Spoke 43 wheels - X-Brace - Mason Engineering front strut brace - CF gauge overlay - ZHP shifter knob - Racing Dynamics cat-back - Doubled brake lights - M-tech rear spoiler From Page 68 of the 1997 Owners Manual: "Vehicles equipped with ASC+T remain subject to the laws of physics." | | | 11-30-2006, 01:46 PM | #7 | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 | Quote: Originally Posted by CirrusSR22 Ah yes. I have a rear wiper, but no wing. I did find a set that was actually cheaper, and longer. They are 24" Extended, and 17" compressed, so .5" longer than stock. Same 7" travel. They belong to a 92 (and earlier?) Ford Aerostar. There are two versions, one for a rear wiper and one without the rear wiper. But after looking at pictures of the Aerostar hatch, it seems quite massive, even compared to a Blazer. My guess is it would be too strong. Rockauto has the version w/o the wiper for $13.86. It's Sachs/Stabilus #SG204006. EDIT: I measured the hatch latch protrusion to the ground at 66.75" (car's not lowered). I didn't measure it before, but it doesn't seem any lower. Also, it's 11F outside and the hatch firmly stays up. | !! WARNING !! That extra 1/2 inch of compressed length may not allow the hatch to close properly if these Aerostar lifts are used... I'm still going to look into this myself. | | | 11-30-2006, 05:04 PM | #8 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Using non BMW struts, can be as much trouble as using a non BMW airbox. Didn't you just say the engineers at BMW know what they're doing! I just finished a job involving a Satcom system on a HMMV vehicle. The system had doors on the side that opened and closed with the same type of gas struts. The problem is, if the struts have too much strength, the points at which they connect to the vehicle are now the weak link. I haven't looked closely at the two points of connection on the car, but you can bet they will be subject to more force, and could possibly break. My Triumph mechanic always uses the same analogy about the 100 engineers who designed the bike. I'm always looking to improve my bike, but have to be sure I understand the pros and cons. Quote: Originally Posted by DustenT NICE WORK! Excellent post. I need some new hatch struts, I'll pick up a set of these and give them a try. | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 11-30-2006, 08:29 PM | #9 | Senior Member Join Date: Nov 2004 Location: Minneapolis Posts: 1,587 | Quote: Originally Posted by L84THSKY I haven't looked closely at the two points of connection on the car, but you can bet they will be subject to more force, and could possibly break. | That's exactly what I'm keeping an eye on. I'm gonna contact the manufacturer and see if there is a spec. on the strength of these. The stock ones are 380N, 390N, 420N & 430N. N = Newtons I assume. My only concern for damage at this point is if you let the hatch rise fully on it's own. It's doesn't go up very fast, but when it reachs the top, it's a slightly abrupt stop, so I've been slowing it by hand. Again, I've never had lift supports that work, so I don't really know what it's supposed to do. Sure is nice to have a hatch that stays up though | | | 11-30-2006, 08:41 PM | #10 | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 | I agree with you, Eric. For a stock hatch, go with the correct parts (I did). My problem is my hatch is now several pounds heavier than a stock hatch, and the heaviest lift stock BMW lifters are not quite up to it. I need a few more pounds of lift to be secure. Not 20 pounds more lift mind you... | | | 11-30-2006, 09:53 PM | #11 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | Quote: Originally Posted by L84THSKY Using non BMW struts, can be as much trouble as using a non BMW airbox. Didn't you just say the engineers at BMW know what they're doing! | This is hardly the same thing. This is a cheaper alternative to a stock part, not an upgrade. If these replacement struts are .5" shorter both extended and compressed, how can it put additional strain on the contacts? The hatch won't be open all the way since the struts are shorter, so there is no opposing resistance. Or am I thinking about this the wrong way? __________________ '99 Dinan M3 | | | 11-30-2006, 10:16 PM | #12 | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 | No, the strain would come from trying to close the hatch against lifters that are far stronger than the stock design. I'm sure there is a margin there, but if the struts are super-heavy, you essentially bend the hatch at the lift point every time you close it. This is a bad situation, similar to the one-sided lift which twists the hatch... | | | 12-01-2006, 04:39 PM | #13 | Senior Member Join Date: Jun 2003 Location: Saint Paul, MN Posts: 3,244 | FWIW I just had Stabilus struts installed this past week. It sends the hatch up with some force and takes a pretty good tug to get them compressing. Sounds pretty much the same as your lo-dough alternative. __________________ My Former Rides 1999 318ti Alpine White, Cali Roof, Dinan goodies 1996 318ti Hellrot California Edition | | | 12-01-2006, 05:50 PM | #14 | Senior Member Join Date: Nov 2004 Location: Minneapolis Posts: 1,587 | Quote: Originally Posted by 96cali FWIW I just had Stabilus struts installed this past week. It sends the hatch up with some force and takes a pretty good tug to get them compressing. Sounds pretty much the same as your lo-dough alternative. | Cool, thanks. Hopefully the manufacturer will get back to me with some specifications. | | | 12-01-2006, 08:28 PM | #15 | Member Join Date: Dec 2005 Location: Toledo, OH Posts: 60 | I am delighted with this thread and intend to go to autozone today to get the alternative struts. The back of my head thanks you. I asked my mechanic to replace mine a few weeks ago but they needed to order them and because he is so fastidious, (Usually a great characteristic for a mech. He is like the mechanic on Seinfeld who was always scolding Jerry over the maintenance of his car.) he would not order the heavier duty struts for the hatch with wiper and spoiler because I have an Active with wiper but no spoiler and the heavy duty strut was not the specified part. He suggested that I could always order the heavy duty strut myself at the dealer and put them on myself. That was what I was going to do, but had not gotten around to it. Now I am going to get these alternative struts instead. | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |