 Talk torsions and springs. |
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| gnomefabtech |
 Mar 21 2025, 11:20 AM
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#1
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Member  Group: Members Posts: 146 Joined: 27-December 22 From: Los Angeles Member No.: 27,063 Region Association: None  |
Hello all-
So, I'm finally able to turn my attention to the suspension on my car now that it's running. The car was hacked for a v8 when I got it and I have instead done my Hayabusa engine swap. I'll have to make a separate thread on the adaptor setup, but it's mounted north south and uses the original 901 trans. Dynos at about 300whp with turbo. 2k lbs overall weight. Narrow body. The PO added some crazy stiff rear springs on coilover sleeves and they need to go. Also the front is way too stiff. It's all 911 front suspension and brake parts. Questions: I'm thinking about 140# springs in the back, but how long a spring should I use. 14"? 12"? Helper springs? In the front I think it might have like 21mm bars, and that's way too stiff. Are normal 19mm 911 bars soft enough for a street driven 914? Or are there thinner 911 compatible bars? Thanks! |
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| gnomefabtech |
Mar 26 2025, 08:49 AM
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#2
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Member Group: Members Posts: 146 Joined: 27-December 22 From: Los Angeles Member No.: 27,063 Region Association: None |
I got the rear springs in yesterday. Massive improvement. For starters the 14" 125# springs don't have any free droop so they don't rattle on the perches, and 125# is a pretty good sport street spring rate. The car came with nice Bilsteins that I never knew were nice because the suspension didn't move.
Here's a pic of the old spring vs the new spring and a link to the springs I used. https://www.summitracing.com/parts/STR-SP14125A  |
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| Superhawk996 |
Mar 26 2025, 09:01 AM
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#3
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914 Guru Group: Members Posts: 6,907 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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QUOTE(gnomefabtech @ Mar 26 2025, 10:49 AM)  The car came with nice Bilsteins that I never knew were nice because the suspension didn't move. Suspension travel is overrated (IMG:style_emoticons/default/av-943.gif) |
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Posts in this topic
gnomefabtech Talk torsions and springs. Mar 21 2025, 11:20 AM
Superhawk996 Here is a question to think about
If you are run... Mar 21 2025, 11:53 AM
JamesM
Here is a question to think about
If you are ru... Mar 23 2025, 03:26 PM Root_Werks I went down to 110lb springs in the rear of my six... Mar 21 2025, 11:59 AM Shivers @gnomefabtech
Hey dude, I’m from LA and know t... Mar 21 2025, 12:58 PM mlindner
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 21 2025, 01:13 PM mepstein Make sure you identify your A-arms before buying t... Mar 21 2025, 01:18 PM gnomefabtech Great replies.
I am one to set stuff up pretty so... Mar 21 2025, 01:34 PM mepstein
Great replies.
I am one to set stuff up pretty s... Mar 21 2025, 05:04 PM mskala Note that the torsion bars on both the 914 and 914... Mar 21 2025, 02:16 PM Geezer914 I have 140 lb. springs in the rear and 19mm torsio... Mar 21 2025, 04:08 PM Front yard mechanic I like soft suspension with sway front and rear i... Mar 21 2025, 04:29 PM worn
I like soft suspension with sway front and rear ... Mar 24 2025, 07:35 PM gnomefabtech What did those 18.9 bars come in? Short wheelbase ... Mar 21 2025, 05:36 PM gnomefabtech Do any of you know roughly what a type 4 weighs fu... Mar 21 2025, 05:38 PM JamesM
Do any of you know roughly what a type 4 weighs f... Mar 23 2025, 03:32 PM brant The common answer is 250. With close to 50/50
Any ... Mar 21 2025, 06:21 PM gnomefabtech Does anyone know the motion ratio of the rear susp... Mar 21 2025, 06:43 PM slivel
Does anyone know the motion ratio of the rear sus... Mar 24 2025, 11:26 AM captain awesome Are most of the softer 100 lb recommendations with... Mar 24 2025, 09:37 AM flxzcat My new to me 914-4 is 1825lbs weighed last week on... Mar 24 2025, 02:22 PM JamesM
My new to me 914-4 is 1825lbs weighed last week o... Mar 30 2025, 06:38 PM brant thats a nice weight...
guessing it is streetable w... Mar 24 2025, 02:31 PM gnomefabtech Headed to the shop today to install 125# rear spri... Mar 25 2025, 09:58 AM flxzcat
thats a nice weight...
guessing it is streetable ... Mar 25 2025, 10:49 AM brant Way to go
I got my -6 to about 1810 wet Mar 25 2025, 12:35 PM gnomefabtech Also, you guys are talking about 1800# cars. What... Mar 26 2025, 08:54 AM sb914 You have pics of the engine swap.?
I watched a co... Mar 26 2025, 09:23 AM gnomefabtech I didn't take a lot of photos of the build pro... Mar 26 2025, 10:01 AM sb914 Holy rpm ! Can’t wait to see the whole car ... Mar 26 2025, 10:23 AM gnomefabtech RE: Talk torsions and springs. Mar 26 2025, 11:45 AM yeahmag I run extremely high spring rates, but have all te... Mar 26 2025, 04:15 PM gnomefabtech
I run extremely high spring rates, but have all t... Mar 26 2025, 05:04 PM yeahmag I have the Mad Dog Motorsports longitudinal, inner... Mar 28 2025, 04:24 PM technicalninja I just love the murdered out black car look!
... Mar 28 2025, 06:04 PM gnomefabtech All that black out look was done by the P.O. but i... Mar 30 2025, 10:43 AM gnomefabtech
I have the Mad Dog Motorsports longitudinal, inne... Mar 30 2025, 10:45 AM |
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