Rear axle boot

dahabit
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Re: Rear axle boot

Postby dahabit » Sun Feb 22, 2015 12:51 am

he told me it was 50404.55
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87e30
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Re: Rear axle boot

Postby 87e30 » Mon Feb 23, 2015 3:22 am

From what I can find those are springs for the m42 318i. They won't lower the car as much as the right ones.
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
dahabit
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Re: Rear axle boot

Postby dahabit » Mon Feb 23, 2015 3:59 am

I just did a quick search and it seems both 50404.55 and 50406 will work on the '87 325is. Now i'm thinking if ride quality will be F'd up if I have the 50406 in the front and 50404.44 in the rear.
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Re: Rear axle boot

Postby 87e30 » Mon Feb 23, 2015 1:26 pm

They will both work, but the 50404's were made for the lighter 318. Now that I think about it more those springs might actually make the car sit LOWER because they're designed for a lighter car. I thought I read someone else say they sit higher though. I'd just get the right ones all around if he's offering that.
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
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M20_fever
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Re: Rear axle boot

Postby M20_fever » Mon Feb 23, 2015 7:10 pm

There is no difference in pretty much any parts between the 325i and 325is, so suspension, driveline, interior, etc will all be the same. The car will sit pretty much the same height with the 318 springs, but the rates are lower so the ride will be softer nominally. I'm sure you'll be fine with either springs.
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87e30
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Re: Rear axle boot

Postby 87e30 » Mon Feb 23, 2015 11:33 pm

What he said. ^^^ :-P
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
dahabit
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Re: Rear axle boot

Postby dahabit » Mon Feb 23, 2015 11:37 pm

But you guys agree going with two different Springs is not a good idea.
Because the guy I was buying it from said he can't get me the other ones to complete the set.
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Re: Rear axle boot

Postby 87e30 » Tue Feb 24, 2015 12:50 am

It's more about preference. Would you like a softer ride in the rear than in the front, or do you want it to be more equal? Some people prefer MUCH different rates in the front and rear.
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
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M20_fever
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Re: Rear axle boot

Postby M20_fever » Tue Feb 24, 2015 6:20 pm

Traditionally the rear springs have a higher rate than the fronts. Having lower rates in the rear could cause some undesirable handling characteristics if you plan to do any track days or autox. I would pass personally, just because the dude seems shady to begin with. You can get H&R sets on the forums for under $200 almost any day of the week, just get a matched set so you don't have to guess.
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Re: Rear axle boot

Postby dahabit » Tue Feb 24, 2015 9:51 pm

I am also passing on those springs. He said he also has some purple ones that drops about 2" but doesn't know the serial number yet.

So..we will see.
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Re: Rear axle boot

Postby 87e30 » Wed Feb 25, 2015 1:00 am

No better color than purple! I think a 2" drop would be too much on these cars as a daily driver though. I scrape the shit out of my exhaust on speed bumps already with only 1.25".
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
dahabit
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Re: Rear axle boot

Postby dahabit » Wed Feb 25, 2015 2:30 am

Color purple always gets me.
2" is a big drop especially with the original wheels.

I saw these on ebay and I'm a little tempted.
http://www.ebay.com/itm/351219094898?ss ... 1436.l2649
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Re: Rear axle boot

Postby M20_fever » Wed Feb 25, 2015 2:35 pm

The problem with drop springs is they lower the car without increasing the spring rates too much, so you get a lot of bounce which it where the pan cracking hits come from. My J-Stocks are really low, but with the high rates the car bottoms out less than it did with the H&R Race springs that had less drop.
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North Suburban Sports Car Club C Prepared class champion 2012
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87e30
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Re: Rear axle boot

Postby 87e30 » Thu Feb 26, 2015 12:02 am

Good point, but do you ever drive over speed bumps? Even driving at 1mph I have to go over some speedbumps diagonally or I'll scrape exhaust.
Schwarz 5-speed 87 325is (newest project)
Arktisblau 5-speed 86 325e (current DD)
Schwarz 5-speed 87 325e (parts car/LS1 swap?)
Gazellenbeige automatic 85 318i (70,000 miles)
Alpine white 5-speed 87 325is (my first e30, possibly for sale)
99 Suburban
dahabit
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Posts: 53
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Re: Rear axle boot

Postby dahabit » Thu Feb 26, 2015 12:09 am

I would definitely require bigger wheels, if I go 2".

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