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Location:
S.E suberbs, Vic
Registered:
December 2003
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rear sprinter height adjustment
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Tue, 23 November 2004 08:33
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has anyone setup a rear height adjustment on a sprinter or a simular setup without converting to coil-overs? I am thinking about doing this thats all.
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 08:40
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how would you do this without coilovers?
spring compressors?
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Location:
Montrose, VIC
Registered:
May 2002
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 08:53
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With your Fat Cousin Lenny in the back - too high = more custard tarts, too low = starve him. Simple, ey?
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 08:56
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Adjustable perch height.
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 09:30
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I was thinking of a setup where the original seat is removed off the diff and a tube is welded to the housing that is the same I.D as the spring, from there it either winds up and down via a threader collar like a coil-over or by spacers.
Takai: ever seen or heard of this perch height adjuster?
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 09:35
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Yeah, seen a similar design on a 300ZX. They used a 65mm coilover setup and welded it to the base and an upper hat on. It was kept captive by a chain. Slightly dodgy if you ask me.
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 09:38
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pick a height and stick with it!
honestly, even with adjustable coilovers are you going to be changing the height all the time?
doubt it
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Club Member
Location:
sydney
Registered:
May 2002
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 10:29
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Not quite Michael, this was ona 300ZX. But yours looks quite interesting too. How reliable would you peg it? I note that you specifically said IP. Thats now one of the things i have to comply to. Interesting....
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 13:08
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Simon-AE86: find a height a stick to it? sounds good except how do I find the right height when I cant change it to test it out? I plan to tweak all 4 corners of my car a few times untill I get it right, then keeping it there.
IRA11Y and takai: I was thinkig of something a bit less dodgy!
Perhaps if I can I should just make something up
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Location:
Terrigal
Registered:
May 2002
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Re: rear sprinter height adjustment
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Tue, 23 November 2004 22:37
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Whats dodgy about IRA11Y's setup?
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Wed, 24 November 2004 01:33
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well it isnt the best pic but I think the spring would rub against that collar under the right circimstances, also I wonder how captive that spring is. This is one of those times I want to keep an original design part. As a bous I would have less chance of getting defected.
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Location:
cambo
Registered:
May 2002
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Re: rear sprinter height adjustment
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Wed, 24 November 2004 10:09
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man there is no way that spring would come off. you dont want dodgy but you want to weld a tube to your diff? why dont you find a tried and tested suspension combination that works rather than something thats gonna be dodgy just for the sake of the wank factor.
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Wed, 24 November 2004 21:13
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there is nothing dodgy with my idea, I would do it in such a way that I would try and make it look factory and would be used to fine-tune my suspension. No wank factor here I want to adjust the balance of my car. It would even work out in conjection with one of these tried and true packages as you call it to make fine adjustments to my personal prefrance.
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Location:
cambo
Registered:
May 2002
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Re: rear sprinter height adjustment
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Thu, 25 November 2004 05:47
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for the money you would spend im sure you could get a high quality coil-over setup for the same or cheaper. less hassle and im sure better anyway.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: rear sprinter height adjustment
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Thu, 25 November 2004 06:36
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| Quote: |
How reliable would you peg it?
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well to be honest i still dont have it in the car yet, that pic was a mock up. Ive been very busy trying to get the front end just right first and been waiting to buy a rear swaybar before i put the coil overs in ( which I have now bought so will be in the car very soon )
but reliability wise i decided on this setup because this is exactly how noltec set up the IP AE86's and was suggested to me by Dave at Noltec so that it would still pass engineering for street seeing as its not in effect a true coil over setup on the rear and also it can be easily set up as captive by choosing the correct shock configurations
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IRA11Y and takai: I was thinkig of something a bit less dodgy!
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see above nothing dodgy about this setup at all... a few more things to note about that specific picture of my coils though....
in that shot there are a few things ive left off.. it was a test fit after all 
firstly the top spring perch is not there, this helps to keep the spring a bit more captive and by drilling a wire tying ( like what you do to meet scriutineering in rally ) the spring to the top plate helps to secure it further, although this is not really neccesary if you choose a correct length max shock stroke that keeps the spring captive at all times ( referring to live axle set up here )
secondly theres no bumpstop, ill be cutting down a factory one so its a bit shorter which bolts in and holds the top plate as well
thirdly, similar to what has been discussed the threaded sleeve is welded to a section of pipe which in turn is welded directly on to the original spring perch, so if you ever need to you can still throw the original springs back in and you also dont upset the axle tube by heating it up with welding, the std perch is more than strong enough to cope with the job, you may need to do a bit of intracate grinding on the pipe to get it to sit nicely but a bit of patience and carefull planning makes it all easy.
hmm what have i missed......
oh yeah,
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well it isnt the best pic but I think the spring would rub against that collar under the right circimstances,
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nope it doesent, with the correct spring and shock combination the movement is limited and the only reason it would ever rub is if you havent set the angle correctly to cater for foward tilt movement on full lift. at the end of the day that is down to how well you set it up in the begining.
I havent heard of any problems with this from the IP guys either.
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Thu, 25 November 2004 12:07
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IRA11Y: mosty opf the things I was looking at and thinking was dodgy were things that u pointed out as being unfinished. Although looking crude it has the capability of working well. I thought that the spring would rub because the angle of the collar seemed wrong, but now that u say it was only a temporary dummy fit thats a different story. I would like to see it when it is done.
EVOSTi: I would prefer not to machine a circlip grove in my shockers for a colar and also it would be very close to my tire and would severly limit tire choice I would think. bracing the shocker mount would be pretty insignificant for me though, i am welder happy. Depending on how things work out down the road I will consider it.
Anyway for now I have pretty much decided I will either get to chose the right height because I need to get some custom made or I will carefully measure up what height I want and drop the spring seat height appropriatly.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: rear sprinter height adjustment
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Sat, 27 November 2004 06:33
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well to keep you all happy I got out in the searing heat of sydney to do a proper test fit today and took a pic so you can see exactly how it should seat up...
you can see that now the top seat is in position its fairly captive and thats with the diff floating freely at its lowest point on the shock.. therefore it is captive all the time without having to lock down with ties.
The two spacers on the top perch was what I was testing to get the correct alignment, an alloy wedge will be cut to the correct measurements, then fitted to give a perfect angle down to the lower perch and therefore avoiding any possible binding. You can see as I mentioned previously that the factory bump stop will need to be cut down, this is no real issue as they are easily cut with a stanley knife to size.
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: rear sprinter height adjustment
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Sat, 27 November 2004 12:24
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thats starting to look pretty good IRA11Y, where did u get the collar and spring from?
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Location:
Sydney
Registered:
May 2002
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Re: rear sprinter height adjustment
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Sat, 27 November 2004 22:04
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the collar is noltecs coilover kit and the spring is from Eibach
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Sat, 11 December 2004 23:50
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On friday i had a look at the rear end on my sprinter and came to the conclusion that there just isnt enough room there without removing that protrusion which normally sits in the spring at the top and holds the bump stop. With the short stroke shocks, at 110mm travel i have less than 15cm between where the hat would sit and the top of the seat. Certainly not enough to fit a coilover kit and collar into.
Any other suggestions.
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Club Member
Location:
sydney
Registered:
May 2002
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Club Member
Location:
sydney
Registered:
May 2002
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Re: rear sprinter height adjustment
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Sun, 12 December 2004 00:47
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do you mean that you cant get the spring in there or that it makes the car sit too high??
have you tried using a spring compresser to get them in?
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Sun, 12 December 2004 01:13
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There is no way i could physically fit the height adjustment collar in there. There ended up being about 20mm between the upper chassis mount and the collar when it was placed in there. The Noltec one that is. Thats without the coilover upper hat too. i.e. i would have 20mm or less of travel all up.
I think it has to do with the fact that my shocks are 110mm stroke at max i.e. very short stroke, and so compared to your "full" or long stroke shocks there isnt the room in there. Ill try and take a pic soon of the rear of the car jacked off the ground, its quite interesting. Drops about 20mm all up, need to get some softer springs in there.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: rear sprinter height adjustment
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Sun, 12 December 2004 02:30
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why do you need such short stroke??? even my two way adjustable Konis arent that short? currently im actually running some Hilux shocks which have about 2cm longer than std lenght stroke but they are equal resistance in rebound and bound to some smaller Dia race shocks
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Location:
Adelaide
Registered:
May 2003
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Re: rear sprinter height adjustment
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Sun, 12 December 2004 03:39
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To be honest, i dont really. I have them mainly because they perform better than the konis and only a slight bit worse than the Bilsteins. That and they are about half the price.
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