SR20DET Question (I've Searched) Please Help

[Amigo1107]

As the Title says I have searched and came up with nothing relavent to my question.

My Situation is this, the mechanic helping me install my s13 SR20DET into my 89 240 says that he needs an sr20det transmission harness. Now, i had never realized i needed one but apparently I do.

He found one on Ebay and ordered it but it does not work correctly. He also says he cannot start my car until he gets the transmission harness. But that does not make sense to me, why he couldn't start it...

My question is, where is a good place to either, a) buy an sr transmission harness or b) is there any other options I should explore???

Also, is it true that my mechanic can't start my car without a transmission harness? doesn't make sense to me but if someone could varify/explain it to me, I would appreciate it.

Also, my radiator piping and apparently the boost line is running in the way of the fan shroud, so what should i do about that...? should I run without a fan shroud? if i got electric fans would i run a fan shroud also?? (the radiator is a KA radiator until i can get the money for aluminum)

Thank you and sorry if some are newb questions...

any help appreciated.

Thanks,Andrew "Breezy"

[AJ1356]

First of i think this mech does not know how to install an SR . as far as harness goes you do need the transmission harness, i good place to get it is http://www.heavythrottle.com they are a sponsor so if i misspelled the link you can find their link on this site. also phase2motortrend has them.i don't see any reason why he wont be able to start the car with out the transmission harnes but i could be worng.. MODS ANY IDEA ON THAT ??for radiator you should use the SR radiator , i am unsure if the KA radiator fits properly or not , last i checked it did not. and that could be the reason you are having problem with piping and the lines. my advice try finding some NICO members in your area so they could point you the right direction as far as a good place to finish your install.. and kick your mech in the ballz.. well at least that is what i'd do ,

[Silvia007]

Hahahha, I agree with AJ on this one, your Mech does not have a clue on what the hell he's doing. Sorry you're wasting your money on some moron. The reason why he says he needs the lower transmission harness is because there are a few sensors that the SR transmission does not have. The SR transmission has a 5th gear sensor and a neutral sensor and that's it (besides the speed sensor). On top of that, the sensor connectors does not plug into the lower KA harness. That's why he's telling you that. What you need to do is take the respective sensors off the KA transmission and swap them with the SR's. This way it will plug into the KA's lower harness. There will be some plugs that has no where to go, just tape them and zip tie them to he harness so they are out of the way. You may have to swap the speed sensors too, I don't remember 100% if the harnesses use the same connector or not. Once that's done, hook up the alternator wires and starter wires the same way you would for a KA. Then he's gonna have to splice some wires by the battery area. The instructions can be found on [URL]http://www.srswap.com's[/URL] website. Go to the SR Faq and there will be diagrams on how to do this. It's only a few wires so if your mechanic can't do this... he's a lot dumber then he really looks. Anyway, the last bit of wiring is by the ecu where it goes up into the dash, just hook up the corresponding wiring to get your dash to work such as speedo, rpm, water temp, etc. One thing though, your car being a 89-90, you have to get a 91-94 gauge cluster or the tach.

I apologize for the jokes on your mechanic, I'm sure this is his first time and he's probably worried his little head sick that he might not be able to get your car up and running. Just tell him what I told you and you'll be just fine. Oh, it wouldn't hurt to get directions off of [URL]http://www.srswap.com's[/URL] website and hand it to him. I'm sure this swap is knocking some years of his life hahahaha.

[Jesse SR20]

You don't need to run a SR transmission harness. You can run the transmission harness from your stock KA (if it was 5-speed).

Either transmission harness will work, KA or SR.

Give this info to your mechanic - http://www.nissanperformancemag.com/march04/240sr/

Let him know that you can't just plug in the SR main harness and be done with it.

[S13240]

I think your mechanic is just a bit confused. First of all the lower harness isn't needed to start up the car *I think*. You can use your stock ka harness, I think what is throwing your mechanic off is that you need to swap out the sensors on the sr transmission out with the ka sensors. ka speed sensor into sr transmission importantly of all!!!

If the boost line is in the way of the fan shroud then your mechanic is an idiot on that part because it is on the cold pipe almost behind the driverside headlight.

And if you're using the ka radiator with your sr swap then yes the top radiator hose will be in the way of the fan shroud. I'm assuming you're using the stock ka fan shroud as well? A little modification needed to make ka fan shroud work. GO with an e-fan setup if you want to use the ka radiator which will work no problem.

[Amigo1107]

thanks alot guys for the fast replies. i really appreciate it. and yeah, i'm getting a koyo eventually but i have to save up for it and electric fans. and also i'm just trying to get it running.

one of my problems was that i didn't have an engine to begin with so i don't have the KA harness and I had a motor-set not a clip. (bought the car with motorset)

thanks again for all the input, i appreciate it. if any one else has more input i'll be glad to have it.

any ideas where to get either a) DOHC KA lower harness or b) SR lower harness???

[Silvia007]

Junkyard is your best bet, I know our local yard that allows you to pull your own parts has a 240 there still and I'm sure it still has the lower harness... only problem, I'm in Cali right now for work tranning and I live in Minnesota, let me know what state you live, I should be back this saturday and when I'm there, I'm going there for a radiator for my old camry. I'll pull it for you if you want, can't be more then 25 dollars. All I'm asking is the price I paid for it and shipping and I'll help you out.

[Amigo1107]

hey, thanks for the offer. my uncle actually bought a transmission harness for me and so I may not need one. (he knew my predicament and found a way to get one) but if i do need one i will call you and i really appreciate the offer and I may still need it.

[Silvia007]

Regardless, I'm stopping by the junkyard, I'm still picking it up incase other niconauts are in the same boat.