# KA (sohc) to SR Swap **URL:** \ **Category:** Canada Nissan Automotive\ **Created:** [April 20, 2008, 10:55am UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846 "2008-04-20T10:55:52Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![garage\_works](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/garage_works/32/5574_2.png) [@garage\_works](https://forums.speedlife.net/u/garage_works)\ **Post date:** [April 20, 2008, 10:55am UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/1 "2008-04-20T10:55:52Z")
just a few questions, is teh SR swap for a Sohc KA the same in situation to a SR swap for a Dohc KA? also can i use the Sohc Harness moddified for the SR?! ---
**Author:** ![TopGunn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/topgunn/32/3191_2.png) [@TopGunn](https://forums.speedlife.net/u/TopGunn)\ **Post date:** [April 21, 2008, 9:11am UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/2 "2008-04-21T09:11:58Z")
Completely different motors… Thats about the same as me asking if I can use my harness from my 1.3L rotary for a V8. ---
**Author:** ![Red\_To\_Rip](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@Red\_To\_Rip](https://forums.speedlife.net/u/Red_To_Rip)\ **Post date:** [April 21, 2008, 5:03pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/3 "2008-04-21T17:03:12Z")
dan pretty much sumed it up. if you are buying a sr from a company like 4kruzn for example, it usually includes an ecu and complete engine harness. if you already have the block and the rest, go buy a harness and save yourself the hassle. ---
**Author:** ![garage\_works](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/garage_works/32/5574_2.png) [@garage\_works](https://forums.speedlife.net/u/garage_works)\ **Post date:** [April 21, 2008, 6:23pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/4 "2008-04-21T18:23:06Z")
my whole question was SOHC vs DOHC for an SR swap. the harness and ecu i can get no problem… the question is i’ve seen the dohc harness modded with the SR harness to work which is wat we are supposed to do am i correct? is the SOHC harness teh same concept or is it a bit different?? i have teh wiring diagrams and wat is needed to swap pins and such but it doesnt state that its for an SOHC or DOHC KA… it just says KA… now i’ll recap the question SOHC vs DOHC harness same modifications _WITH_ the SR harness or no? my second quesiton was can i use the SOHC harness for the SR harness mod? if so than great i have that in the car… if i cant use the SOHC harness do i have to get a DOHC harness? ---
**Author:** ![Red\_To\_Rip](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@Red\_To\_Rip](https://forums.speedlife.net/u/Red_To_Rip)\ **Post date:** [April 21, 2008, 8:12pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/5 "2008-04-21T20:12:15Z")
> [@86boi](#): > > my whole question was SOHC vs DOHC for an SR swap. the harness and ecu i can get no problem… the question is i’ve seen the dohc harness modded with the SR harness to work which is wat we are supposed to do am i correct? > is the SOHC harness teh same concept or is it a bit different?? > > i have teh wiring diagrams and wat is needed to swap pins and such but it doesnt state that its for an SOHC or DOHC KA… it just says KA… > > now i’ll recap the question > > SOHC vs DOHC harness same modifications _WITH_ the SR harness or no? > > my second quesiton was can i use the SOHC harness for the SR harness mod? if so than great i have that in the car… if i cant use the SOHC harness do i have to get a DOHC harness? wich harness are you talking about? the engine harness must be made for the SR. the chassis harness i believe stays in the car. i dont no what you would modify on the chassis harness for the SR swap? you might have to ask some of other guru’s. ---
**Author:** ![garage\_works](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/garage_works/32/5574_2.png) [@garage\_works](https://forums.speedlife.net/u/garage_works)\ **Post date:** [April 22, 2008, 12:35am UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/6 "2008-04-22T00:35:46Z")
yes the engine harness… the one taht connects to teh ECU… i know i have to use the SR one but there are some modifications to taht harness to make it work for the swap… all i want to know is that the SOHC harness teh same as teh DOHC harness for modification?! by the way i am Asking teh Guru’s … this is the NECC forums is it not? so i am looking for SR advice… ---
**Author:** ![dsm\_austin](https://avatars.discourse-cdn.com/v4/letter/d/e5b9ba/32.png) [@dsm\_austin](https://forums.speedlife.net/u/dsm_austin)\ **Post date:** [April 22, 2008, 8:46am UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/7 "2008-04-22T08:46:07Z")
Im confused what your problem is. If you want to do an SR20DET swap you will use your SR20 harness supplied wityh the motor and you have to wire up 3 clips that you remove off your old KA harness. [http://www.heavythrottle.com/](http://www.heavythrottle.com/) check that out And the SOHC tach will only work with a SOHC motor. If you swap in a KA24DE or a SR20DET into your 1989-1990 240 you will have to use a SR20 tach or a KA24DE tach(1991+) Does that help? Any other questions ---
**Author:** ![garage\_works](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/garage_works/32/5574_2.png) [@garage\_works](https://forums.speedlife.net/u/garage_works)\ **Post date:** [April 22, 2008, 3:09pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/8 "2008-04-22T15:09:29Z")
yes i have heavythrottle as one of my sr help sites thanks DSM! that is a portion of my question. this part is teh one i am asking about no one understands " If you want to do an SR20DET swap you will use your SR20 harness supplied wityh the motor and you have to wire up 3 clips that you remove off your old KA harness." the 3 clips can be found on my KA harness but wat my question is, is it the same with SOHC harness or do i have to use the DOHC harness… thanks again dsm i have followed the HT site and i give that site 100%! can i use SOHC harness for those clips is my question in short ---
**Author:** ![RS13](https://avatars.discourse-cdn.com/v4/letter/r/46a35a/32.png) [@RS13](https://forums.speedlife.net/u/RS13)\ **Post date:** [April 22, 2008, 3:10pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/9 "2008-04-22T15:10:15Z")
Yes. ---
**Author:** ![garage\_works](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/garage_works/32/5574_2.png) [@garage\_works](https://forums.speedlife.net/u/garage_works)\ **Post date:** [April 22, 2008, 3:11pm UTC](https://forums.speedlife.net/t/ka-sohc-to-sr-swap/148846/10 "2008-04-22T15:11:55Z")
thanks again! that is wat i was looking for… i have everything needed just confused in teh sense of DOHC and SOHC harness… seeing that all the swaps i’ve seen pretained to DOHC swaps and barely any mentioned SOHC harness