Gaz Shock and Spring selection.
Hello All!
Long time no see :D I'm looking at getting my shocks organized for the Skyline Roadster and could do with some advice. As most of you know it's got a rather large engine(300kgs with gearbox), a 135mm chassis stretch, and 2mm wall with welded 3mm steel floor so its quite a bit heaver than a normal Haynes Roadster. Can anyone please give me some advice as to what spring rates I should be using and also what shock to use? I'm using the standard Sierra build from the book so I think its 14" shocks that are required. So far I think I should be using this... from Page 15 here. http://www.gazshocks.com/images/down...talogue_V2.pdf 4x - 140/095B12 shocks 2x - 2.25'' x 8'' x 350 lbs springs (Maybe higher i.e. 400?) 2x - 2.25'' x 9'' x 250 lbs springs |
I'm running an s2000 engine and box which is considerably lighter than yours. I run 350 springs up front and 250 at the back. The front feels right but the back to soft [I'm going to change to 300's over the winter]. If I were you I would go at least 400 on the front and 300 on the back. Obviously thus is just my best guess.
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Firstly i would say pay the extra and get the protech shocks, much better quality.
I would speak direct to them and tell them what you are building and they will have a better knowledge of what you will need. |
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My engine is set very far back in the chassis I don't know if that makes it worse. |
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So going to put the order in tomorrow with Gaz.
What I'm thinking is this. G140/095B12-2 Front - 2x 8” 375lb 2.25” Rear - 2x 9” 275lb 2.25” How does that sound to everyone? I know its quite a bit harder but then again with the steel floor,18" wheels, full cage, chassis stretch, 7.5" diff and bonker 6 pot block I think it makes sense. All advice more than welcome!! |
Personally I would go for 300's at the back. But it's all a bit of a guessing game.
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the only way you can tell is to calculate it form weights and shock ratio to be sure.
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