# Spring rate different from sohc to dohc? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [July 7, 2009, 12:50pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049 "2009-07-07T12:50:02Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 7, 2009, 12:50pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/1 "2009-07-07T12:50:02Z")
hey does anybody know if there is a difference in springs from a dohc s13 and sohc s13? thanks ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [July 7, 2009, 1:12pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/2 "2009-07-07T13:12:20Z")
same shit man. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [July 7, 2009, 1:15pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/3 "2009-07-07T13:15:22Z")
no difference ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 7, 2009, 1:18pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/4 "2009-07-07T13:18:35Z")
are there any differences other than the motor? ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [July 7, 2009, 2:06pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/5 "2009-07-07T14:06:22Z")
other than the motor, bumper, dam hicas if you have any…no difference. ---
**Author:** ![simplemind7](https://avatars.discourse-cdn.com/v4/letter/s/0ea827/32.png) [@simplemind7](https://forums.speedlife.net/u/simplemind7)\ **Post date:** [July 7, 2009, 10:39pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/6 "2009-07-07T22:39:11Z")
DOHC Canadian cars had an LSD diff, SOHC were open diff… few other minor things like fabric in the interior. ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [July 8, 2009, 12:42am UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/7 "2009-07-08T00:42:11Z")
The spring rates should be different in the HICAS equipped 91+ car because there was supposedly a “sport package.” My car has HICAS and the shocks & springs are pretty stiff for a stock car (still lots of bodyroll however). I’ve been in an 89 base model coupe and it felt so soft relatively. Maybe it had bad shocks, who knows. Some other notable differences: The seats are monoform buckets on the 89-90’s, while the 91+ have an adjustable headrest + lumbar support (on my leathers :)). Also, the steering wheels are different. One more thing I’m not 100% sure on is that the 89-90 240SX does not have a consult port, but it can be wired in later if need be. I have never owned a SOHC S13, so take what I say with a grain of salt. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [July 8, 2009, 5:58am UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/8 "2009-07-08T05:58:21Z")
> [@My CJ @ Tift (first mudd trip video)](https://forums.speedlife.net/t/my-cj-tift-first-mudd-trip-video/22952/13): > > The spring rates should be different in the HICAS equipped 91+ car because there was supposedly a “sport package.” My car has HICAS and the shocks & springs are pretty stiff for a stock car (still lots of bodyroll however). I’ve been in an 89 base model coupe and it felt so soft relatively. Maybe it had bad shocks, who knows. > > Some other notable differences: The seats are monoform buckets on the 89-90’s, while the 91+ have an adjustable headrest + lumbar support (on my leathers :)). Also, the steering wheels are different. One more thing I’m not 100% sure on is that the 89-90 240SX does not have a consult port, but it can be wired in later if need be. > > I have never owned a SOHC S13, so take what I say with a grain of salt. 100% true. Minus the consult. All S13’s have the port. Probably even S12’s. Did the 89-90’s come with O.E.M spoilers ever??? ---
**Author:** ![240xcsv](https://avatars.discourse-cdn.com/v4/letter/2/bbe5ce/32.png) [@240xcsv](https://forums.speedlife.net/u/240xcsv)\ **Post date:** [July 8, 2009, 9:31am UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/9 "2009-07-08T09:31:04Z")
there indeed is a spring rate difference between the ‘sport package’ and earlier s13s… i dont have it on hand but the springs are slightly more stiffer… still boat-soft though but whatever. Likewise the hicas model has a stiffer rear swaybar. Nothing astronomical though. I’m lazy to search but if you do you’ll find the exact spring rates. ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 11, 2009, 8:56pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/10 "2009-07-11T20:56:15Z")
Does anyone know exactly what years had what springs? and what the specs on those springs were. Also anything else different between the years or dohc and sohc like this that isn’t obvious? thanks ---
**Author:** ![XSNRGE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/xsnrge/32/5565_2.png) [@XSNRGE](https://forums.speedlife.net/u/XSNRGE)\ **Post date:** [July 11, 2009, 9:35pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/11 "2009-07-11T21:35:15Z")
I noticed from driving 89-90’s and 91+'s from work that 91+'s are a little stiffer, as well as have a slightly lower ride height versus the 89-90’s cars. ---
**Author:** ![jed240](https://avatars.discourse-cdn.com/v4/letter/j/a4c791/32.png) [@jed240](https://forums.speedlife.net/u/jed240)\ **Post date:** [July 12, 2009, 7:19am UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/12 "2009-07-12T07:19:59Z")
91-93 hicas models only had the upgraded “sport” springs ---
**Author:** ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)\ **Post date:** [July 12, 2009, 1:16pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/13 "2009-07-12T13:16:32Z")
^^ truth 88-94 NON-HICAS models all had the same springs 91-93 HICAS equipped models had slightly stiffer/lower springs and only 90+ nissans have consult s12s most def. did not have consult 😉 neither do 89 s13’s ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 12, 2009, 1:30pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/14 "2009-07-12T13:30:50Z")
thanks for the info, but whats consult? ---
**Author:** ![AhmadG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ahmadg/32/5577_2.png) [@AhmadG](https://forums.speedlife.net/u/AhmadG)\ **Post date:** [July 12, 2009, 2:49pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/15 "2009-07-12T14:49:26Z")
I tried looking for a big grey consult plug in the driver’s side kick panel…no luck…maybe I’m blind. lol I have a 93 S13 with HICAS…I was sure I had one…oh well I’ll look again later. I still dont understand how the stock springs/shocks make for a firm and harsh ride, but have so much bodyroll. Stock sway bars are pretty beefy too considering the overall weight of the car…weird. ---
**Author:** ![240xcsv](https://avatars.discourse-cdn.com/v4/letter/2/bbe5ce/32.png) [@240xcsv](https://forums.speedlife.net/u/240xcsv)\ **Post date:** [July 12, 2009, 5:05pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/16 "2009-07-12T17:05:17Z")
should be near the fuse box… Anyways WHO CARES? Get some frickin coilovers /thread ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 12, 2009, 5:09pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/17 "2009-07-12T17:09:48Z")
I cant run coilovers, its an oval track car. theres rules ---
**Author:** ![240xcsv](https://avatars.discourse-cdn.com/v4/letter/2/bbe5ce/32.png) [@240xcsv](https://forums.speedlife.net/u/240xcsv)\ **Post date:** [July 12, 2009, 5:14pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/18 "2009-07-12T17:14:01Z")
What are the rules you are restricted to? Technically our cars have ‘coilovers’… so… Just not height adjustable. ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 12, 2009, 5:31pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/19 "2009-07-12T17:31:51Z")
STOCK ---
**Author:** ![purestock240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/purestock240/32/5729_2.png) [@purestock240](https://forums.speedlife.net/u/purestock240)\ **Post date:** [July 12, 2009, 5:33pm UTC](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049/20 "2009-07-12T17:33:46Z")
heres a link to the rules: [http://www.barriespeedway.com/index.php?option=com\_content&view=article&id=111&Itemid=105](http://www.barriespeedway.com/index.php?option=com_content&view=article&id=111&Itemid=105) [Next page](https://forums.speedlife.net/t/spring-rate-different-from-sohc-to-dohc/126049.md?page=2)