Jump to content
SAU Community

Recommended Posts

Finally finished my rebuild after about 7 weeks.

Did

40 thou over rebore

Arias forgies

match ported everything

reseated valves

regasketted everything

New big end and thrust bearings

N1 oil pump

N1 turbs

S/S dumps and fronts

Os giken twin plate

Os giken adj cam gears

Gates radiator hoses

Gates timing belt

Clear cam gear cover

Acid bath

All welsh plugs changed

Oil cooler and filter relocator

Anyway I am still in run-in time and the car seems a bit less than it used to be..I know I might be jumping the gun as I can't really get up it yet. But I have been around 5500rpm ish at 0.7 bar of boost and my 33 was always the 'lesser' car power wise....Just chasing thoughts

Could it be because we opened the piping so much it will take more exhaust gas to boost?

Is the engine just so new and tight?

I am looking forward to giving it a proper boot full but I must behave for a few more hundred k's...

The next step is injectors,pump and fc in case you were wondering why they weren't on the list.

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/
Share on other sites

could be the run in oil as well, i think mineral oil is harsher on the internals at high temp, but thats what it needs to bed the engine etc.

sweet build!! i have just done the exact same rebuild!!

i found that during the run in it also was abit down, but i got it tuned on the run in oil and it pulled 250rwkw on pits's dyno in 3rd at 1.2bar. It was running rich with the lower comp ratio

after the oil change it seems to be much smoother and rev's alot easier. i can feel the power earlier, and it feels like it may come on harder??

i will have it dynoed at the next dyno day & post the results. also pits's dyno results are usually at least 10% low??

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/#findComment-1285363
Share on other sites

Guest two.06l
Finally finished my rebuild after about 7 weeks.

Did

40 thou over rebore

Arias forgies

match ported everything

reseated valves

regasketted everything

New big end and thrust bearings

N1 oil pump

N1 turbs

S/S dumps and fronts

Os giken twin plate

Os giken adj cam gears

Gates radiator hoses

Gates timing belt

Clear cam gear cover

Acid bath

All welsh plugs changed

Oil cooler and filter relocator

Anyway I am still in run-in time and the car seems a bit less than it used to be..I know I might be jumping the gun as I can't really get up it yet. But I have been around 5500rpm ish at 0.7 bar of boost and my 33 was always the 'lesser' car power wise....Just chasing thoughts

Could it be because we opened the piping so much it will take more exhaust gas to boost?

Is the engine just so new and tight?

I am looking forward to giving it a proper boot full but I must behave for a few more hundred k's...

The next step is injectors,pump and fc in case you were wondering why they weren't on the list.

did you open up the exhaust ports when doing the head??

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/#findComment-1285463
Share on other sites

ricknismo

I have an R32 - and have just done the SAME rebuild, I'm also still runnin in (~1500klms on the dial so far) – I have R34 N1s with hks style non-turbulent dumps and a full 3.5” exhaust + the other stuff you mention

At 8psi - I'm gettin ~180awkw I'd say (I can keep up with a std WRX and VYSS)

B4 the rebuild I had about 210awkw – but my bottom end was shot (pots 4 and 6 totally rooted), no dumps, no port and polish blah blah blah

It does not rev out as smoothly as it did b4 - but it I'm not expecting things to fully loosen up until past 5000klms (at least) and I have lost the mineral oil

I have the PFC + Adj CAMS + 550cc injectors + Apexi EBC to install in the next week or so.

I'm expecting somewhere near 280awkw @ 1bar once this kit is installed and tuned

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/#findComment-1285877
Share on other sites

  • 3 weeks later...

Had a play today...found a major boost leak.

Here's a trick...I clamped a plastic cup in the rubber hoses where the air filters go, shoved an air compressor up the (or any) air line and pressurized the whole system...found a couple of leaks...Might still have a little one though.

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/#findComment-1316468
Share on other sites

  • 3 weeks later...

I found the problem...Yeah.

The standard boost solenoid has a T that goes to the plenum on the same line as the actuators...This won't work with an aftermarket boost controller and stuffs around with the sensors I guess. I ran a new vacuum line dedicated to the actators and it all good now.

Link to comment
https://www.sau.com.au/forums/topic/69469-32-gtr-rebuild/#findComment-1353301
Share on other sites

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

    • I wasn’t able to replicate the sound anymore. It was a one time sound so maybe it was just coincidence but it was like small pebbles being dropped in a coke can.   should I try cleaning the MAF? It could be it’s functioning but dirty? I don’t know.
    • Update 4: Hi all. The car drives again! Haven't driven for long, only to store it in the garage again, but the test drive was successful. The coolant and oil leaks seem to be fixed for now. Temps on the engine were also very good, while moving I never even saw 80C water during the approx. 30 minute drive. Ate up all the coolant in the reservoir though so will have to fill that even more when I go to the car next time. One thing that pisses me off is that the RPM gauge is still f**ked, I even resoldered the board twice and used copper paste on the silly screws that are used as connections. Next time I take it out I'll take apart the board and fit new components, I'll see if I can get a replacement IC for it.  I have an appointment set for 22nd of September for the engine tune to 370hp. Alignment also still needs to be done. My hope is that I can get all the legal stuff over with by the end of this season. Anyone of you have advice regarding intercoolers? Currently there is an APEXI core fitted, one of those weird hybrid ones, 600x270x76. I don't think it's bad but it's not new and now I still have the chance to change it now to legally include it in the paperwork. Only issue is that the only options that would arrive in time are a HKS Type R intercooler or generic Ebay spec intercoolers comparable to a JustJap one. Ideally I'd order a Plazmaman but it takes over a month to receive which would mean making the car legal has to wait until next season. Would love to hear some input on this. Same story for my injectors, the previous owner was a nunce and put ID 1050x on the engine. They work but are obviously not ideal at "normal" power levels. But I don't see a reason to change them unless the tuner says it's necessary. I read online before buying a different exhaust that the top secret style rear diffusers won't fit due to the size of the rear resonators. My buddy and I made it work by slightly "adjusting the shape" of the mounting bracket and making some spacers out of 3d print for the mounting bolts. Fits like a charm. Just putting this here in case someone has this problem. Even the hefty HKS Silent Hi Power rear can fits without hitting anything.
    • Well they got my money but they are not getting my gearbox ! 
    • It's needed for rolling idle up, and I think it is a decider on VCT also.
    • I mean, not really. Link ECU's can absolutely still have errors from the ECU thinking it's getting a sensor it's not expecting. I would imagine the speed at the ECU level in Nistune does absolutely nothing anyway? I assume the ECU does not do any fancy TC stuff with regards to front+rear wheel speed or anything of that like anyway. Someone who uses Nistune may be more fluent in it. 
×
×
  • Create New...