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09-14-2009, 12:29 AM | #23 |
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Thanks for the finding, its quite useful..
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09-14-2009, 02:18 AM | #24 | |
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09-14-2009, 02:27 AM | #25 | |
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And.. I couldn't find the part# in the Tischer's website (wanted to check the actual price).
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09-14-2009, 05:21 AM | #26 |
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If you install the bumpstops, do you HAVE to shave the guide supports in the rear? What improvement will we feel doing this when paired with H&R or Eibach springs?
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09-14-2009, 10:27 AM | #27 |
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That's an interesting question. The photos in the original post are front suspension parts, not rear. I'm curious what Dinan did in the rear to increase travel.
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09-14-2009, 11:30 AM | #28 |
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I don't believe they did anything because there is supposed to be more travel in the rear, but I am just speculating.
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09-14-2009, 04:07 PM | #29 | |
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You don't have to do anything with the rear, it already has enough travel. The modiified guide supports are only for the front. disclaimer: I have been running the 99' bumpstops with H&R Sports and Dinan camber plates since the spring. The front end does still seem to bottom over long undulations on the highway, but understeer seems to be almost nil with 265's all the way around. |
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09-14-2009, 05:39 PM | #30 |
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I think I found the "Guide Support" on Tischer's web page. They call it the Strut Mount and the cost is $100.42 ea. I am not sure it's the same thing but it's an educated guess based on the picture shown in the link below (part number 16).
http://www.trademotion.com/partlocat...16&catalogid=1 This is timely because I just ordered RD Sport springs. I may try and mimick Dinan's system. |
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09-14-2009, 07:16 PM | #31 |
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Just to clear some things up for myself. These bump stops and shorter guide support or whatever, doesnt actually improve handling in any way. All it does is give the spring a little more room for comprssion so that it doesnt hit the bump stop correct?
If Im not mistaking, when i had my tire off, I can tell that inbetween the coil of the springs (the front) there was missing paint, as if when compressed too much the spring would actually hit one coil with another. Is this what would be resoluted with the new bump stops? |
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09-14-2009, 11:53 PM | #32 | |
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http://www.m3post.com/forums/showpos...3&postcount=19 2) The Japanese strut is definitely different vs US according to PN. But we do not know if the springs are different too because springs are option specific, so it is not listed on catalogues. And we don't know how the Japanese strut is different, it could be just the geometry, where the spring mount is lowered, or it could be the damping rate, or it could be both and something else. The key is, we do not know based solely on PN. |
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09-14-2009, 11:59 PM | #33 | |
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09-15-2009, 01:10 AM | #34 |
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So do we have to modify the guide supports if we change out the bump stops? I'm still confused if this will improve handling or not with H&R Sport springs.
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09-15-2009, 06:52 AM | #35 |
One mod leads to another ...
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The Dinan spring, bumpstop, and guide supports are all engineered to work together. Just because these are existing parts doesn't mean that this solution isn't a good design. In fact I think it makes it even better since they are OEM proven parts. With that being said, without the Dinan spring with their specific rating then modifying the bumpstops and/or guide supports with H&R or other springs isn't going to do much for you IMO. Should give you more travel before you hit the bumpstop but it still isn't going to work the way the Dinan kit does because the H&R, etc. springs are shorter to begin with.
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09-20-2009, 03:56 AM | #36 |
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Dinan did a great job in looking into this and developing a package to address the issues with lowering springs.
We have driven M3's with various lowering springs and there are issues. I think it's great Dinan went to this length. To some people their price will seem high, to others it won't as they will appreciate how much effort has gone into this. As far as using OEM parts is concerned - Alpina do the same thing. |
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09-20-2009, 04:32 AM | #37 |
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So these other bumpstops won't help us guys w/ H&R?
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09-23-2009, 12:34 AM | #38 | |
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If you really want to go fast, you need linear (not progressive) springs and enough suspension travel so they don't ever hit the bump stops. Slammed cars give up performance for looks, or else they ride like buckboards. |
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09-23-2009, 09:29 AM | #39 |
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damn... great find ! very very useful tip indeed!
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09-23-2009, 10:48 AM | #40 |
I can't belive this car is a 4 door family sedan.
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not surprising at all- That is all Dinan does- Dinan has been selling people renamed BMW OEM parts forever at a premium price-
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09-23-2009, 02:11 PM | #41 |
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09-23-2009, 03:53 PM | #42 | |
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I don't own any Dinan stuff and may never - but R&D is something they do well and if there is something out there already made to achieve the desired result, why re-invent the wheel? Alot of tuners do this -nothing new. OP- thanks for the info - very informative. I may actually purchase this kit now knowing what its made of. |
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09-29-2009, 05:38 PM | #43 |
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Thanks a lot for sharing this, rldzhao. I'm getting some H&R Sports installed tomorrow and I just now saw this thread.
Luckily, my parts guy is having them overnighted and I'll have them tomorrow morning in time for the install Thanks again
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09-29-2009, 06:43 PM | #44 |
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did you order the bump stops and guide supports? please keep us posted on how it turns out for you. im thinking about trying this combo.
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