Jump to content
SAU Community

Recommended Posts

Hello guys

Just last week I wrecked my ECR33 drifting at the track.......... fast forward a few days and I have a new HR33 with my old engine set.

the only difference I see is the small junction box above the ecu location on the HR33 only has one spot for the big plug and that's it. The small clip next to it reminds me of the body wiring loom for the s13.. this was blank as well when removing the HR33 engine harness.. I cut the small clip that fits into that location on the HR33 off of the ECR33.... If its similar to the s13/14... that is just for your gauge cluster.

basically my injectors which worked before the swap are not clicking when cranking or turning CAS by hand. I have not check spark yet as it was getting late and had to go to work in 3 hours. I am getting plenty fuel. Ill try another CAS after work.

anyone done this swap and if so what were any issues if any?

ps

running PFC not issues at all after the crash.

Link to comment
https://www.sau.com.au/forums/topic/323725-rb25det-into-hr33/
Share on other sites

there was nothing to patch. swapped the entire engine with harness over and every plug was plugged up. engine ran fine before the swap. the only thing disconnected are the grounds and power source amongst the obvious things to remove the engine.

no spark at all.

I used 3 CAS, 1 set of coil packs and 3 ignitors today.

been reading up on possible relay issues.... I directly powered and grounded the relay still nothing. Ill figure something out... events are coming up fast.

So your engine and loom is from a series 1 but is the donor a series 1 or 2? The power feed for the injectors is different and the series 2 doesn't have relay to switch the coils on like the series 1. The power feed to the switching side of the relay is missing in the series 2 loom.

Edited by BH_SLO32

no sir my engine is a S1. I fixed the issue about 2 hours ago

I had to power the injectors and cut the thick white wire on the relay next to the ecu and hook power up to the other wire not connected to the relay.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Check the injectors flow evenly, and are actually flowing what you and the ECU think they should be flowing. If it's starting up on starter fluid, you have a fuel issue. Is it possible under cranking your fuel pump is turning off?   The harness you replaced, is that the whole engine harness? Do yourself a test, and drop the old harness on and plug it into the Z32 ECU. It's possible they've wired things different. From memory S1 to S2 is different in RB25 and you may have a wrong loom
    • I haven’t pulled the injectors to watch them spray yet but they are clicking from the cas and all of the spark plugs are wet with fuel. I’ve thought the cylinders were being flooded from the beginning and was hoping fuel pressure would fix it. Tonight I am going to pull the rail and watch the injectors spray. Don’t know how to test/diagnose if the plugs are firing in correct sequence but that should be a timing thing and as far as timing goes my car still has the half moon for the cas can only install it 1 way. And my mechanical timing is 100% correct I posted photos above. Confirmed with the balancer on and off. 
    • I checked spark on all cylinders and they all visually have spark with the plug pulled and grounded, but plug 1 is the only one that fouled. This was a running swap that blew up and was rebuilt by a machine shop, put a new wiring specialties harness and did all gaskets, studs, and bolts while it was out.  compression is 135-150 across all cylinders. Aside from that from my understanding with the z32 ecu and maf the car should start regardless. The wiring for TPS and the dual 02 sensor/ dual knock sensor stuff shouldn’t actually stop the car from starting or even running well, (just slightly rich)  they just give fault codes. Car supposedly is supposed to start as long as you have z32 afm and ecu with the nistune base map and that’s info coming from a well known and trusted tuner who does a lot with SR/RB (Rsenthalpy). After more trouble shooting today where I’m at right now is that the cas is sending signal to the injectors they click while spinning the rotor, Fuel pressure is now set at 43psi, all cylinders have good compression and all of the plugs looked great (just wet with fuel) except for cylinder 1 which was very black (cylinder 1 has 150psi compression). all of the coils generate spark if pulled out and grounded out on the head. On the fuel pump car just pops into the exhaust. On starting fluid car will fire off. Hard to tell if all cylinders are firing off but definitley a couple. sounds like all of them but it’s only for 3-5 seconds hard to tell. 
    • Final update!!! Got the front bar fitted and sprayed and all sorted now. My cutouts worked great and the indicators aren’t just falling off. 😂  
×
×
  • Create New...