Jump to content
SAU Community

Recommended Posts

  • Replies 149
  • Created
  • Last Reply

Top Posters In This Topic

Sludge buildup sounds like a worry. I'll check mine next service.

Sorry to hear about your uncle passing.

do an oil flush at the same time.

and if your gonna check it, change the seal while your there..its what was leaking on mine.

Part number

OEM oil cooler O-ring - B1304-43U00

thanks bud

i always do an oil flush. every car, every service. never had a problem with oil sludge.

also sorry to hear about your uncle.

maybe ill replace all the hoses etc on the new engine before i put it in. would make routing pipes much easier with no car chassis around it lol

i always do an oil flush. every car, every service. never had a problem with oil sludge.

also sorry to hear about your uncle.

maybe ill replace all the hoses etc on the new engine before i put it in. would make routing pipes much easier with no car chassis around it lol

yeh but would that much sludge affect the tune if its all taken out?

you wouldnt think so!

maybe its affected oil pressure which is driven directly from the motor, thus engine can rev freely. i dunno, im sure scotty will come along and tell us why lol

i did it at scotts house. he says he didnt think so, until i explained how much was actually pulled out.. i actually scared him and i think he's checking his. he said the same thing about oil pressure and stuff. Its the only thing i did yesterday.. unless in between then my fuel pump is on its way out..

stock pump still? no youre running E85 right so you have a walbro?

hmm might be worth taking my spare off too and checking that........

ive got the walbro in. but i heard someones gone through a few of them(i think craig) but its not making any different sounds or whining..

ok, could that be the cause of your first turbo problem?? lack of oil

yeh i know its the problem..for both of them.. the banjo bolt hadnt been drilled out.. so if this gunk got in there. would of killed it instantly..

Im suprised at how good of a condition scotts stock turbo is.. i think its worth pulling that banjo out and opening it as soon as you get the car.

18 to 19 psi doesnt seem to do short term damage, that little turbo ran hard for 3 months without issue.

Im worried about the sludge but the other engine I had here was fine, I would say yours was just never serviced in Japan mate.

Lack of oil changing by previous owner would explain the sludge (Nissan oil is a mineral base).

Sorta makes you wonder how good these detergent additives in Sougi are if they are not cleaning away the sludge.

Glad to hear the car is feeling better (about time you got a break with that thing!).

EDIT: Bah, Scott got in before me.

Edited by iamhe77

18 to 19 psi doesnt seem to do short term damage, that little turbo ran hard for 3 months without issue.

Im worried about the sludge but the other engine I had here was fine, I would say yours was just never serviced in Japan mate.

nah your spare one did have abit around the adaptor bolt(if thats what you'd call it) but no where near as much as mine..

Lack of oil changing by previous owner would explain the sludge (Nissan oil is a mineral base).

Sorta makes you wonder how good these detergent additives in Sougi are if they are not cleaning away the sludge.

Glad to hear the car is feeling better (about time you got a break with that thing!).

EDIT: Bah, Scott got in before me.

well thats just it, not only that i did a motul engine oil flush.. it makes me wonder how much was in there previously.. i think ill be doing another flush on the coming service, and pulling it apart again..

more importantly.. whats everyones opinions on the tune going out? i tried calling Cihan but his phones off..

im getting and AFR of 17-18 on full throttle so im babying it around now.. too scared to push it further..and definitely wont be.

but my Idle is A+ compared to before.

im getting and AFR of 17-18 on full throttle so im babying it around now.. too scared to push it further..and definitely wont be.

:mellow: isnt anything above 15 'lean'? Pretty sure my AFR's are at something like 11 (super rich)

It could definitely need more fuel now its spinning easier. I cant believe you ran nearly 300kw with a blocked oil pump and did no damage...

hahahahah i thought the same thing.. honestly im suprised i even got up there at all on a fairly rich de tune and that oil blockage problem...

:mellow: isnt anything above 15 'lean'? Pretty sure my AFR's are at something like 11 (super rich)

anything above 13 is lean. for us on e85, we dont really need to worry about cruise, but its only on full boost full ball.. before i did the oil fix, i was at about 12 -11 AFR at 22psi.. its the only thing thats changed..

i doubt the brake sensor cable has anything to do with it

Dunno anything about the tune, but at least you have taken quite a bit of stress of the oil pump (removed blockage so considerably less pressure builds up on the outlet side of the pump), thus increasing it's life span.

With those AFR's, at least your economy will be much better!

Just a thought, could the ECU have monitored either a lower than ideal oil flow or increased pressure on the oil pump and "pulled back" the tune, then after the clean out perhaps increased the tune to where it should have been in the first place?

(sorta like a mini limp mode)

Yup, but ethanol wont ping like petrol, it just runs hot so its not too bad for a quick squirt but you wouldnt want to run it that lean for very long.

I always forget you guys are on a different fuel >_<

Dunno anything about the tune, but at least you have taken quite a bit of stress of the oil pump (removed blockage so considerably less pressure builds up on the outlet side of the pump), thus increasing it's life span.

With those AFR's, at least your economy will be much better!

Just a thought, could the ECU have monitored either a lower than ideal oil flow or increased pressure on the oil pump and "pulled back" the tune, then after the clean out perhaps increased the tune to where it should have been in the first place?

(sorta like a mini limp mode)

i doubt it, i dont have any pressure or temp sensors in the oil..

will definitely go on the list after finding this but yeh.

unless we're talking about stock ECU. then i dont know. the only thing ive noticed change is mid to top AFR's.. low range is the same(but much better sinse the oil thing) and cruise is about 2-3 AFR's higher than previous.

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

    • Put a fuel pressure gauge on it. Replace the turbos. Probably completely separate issues.
    • What copper washer do you guys use on the bleeder bolts? The existing one I have I had no idea where to find it in a local store, I did buy some online but that are only 1mm thick whereas my old one is 2mm+ thick and when I put the new washer out and squeeze the top radiator hose I can hear a bit of air but not with the old one. Does this matter? The new one doesn't leak, but the inner diameter is a bit loose whereas the old one threads on the bolt.
    • Howdy all, after being out a few weeks ago on a spirited drive in my GTR I have 2 issues that oddly have appeared at the same time. Whilst accelerating quickly through the gears all of a sudden i’ve lost power at the top of third gear (below redline around 6000rpm) for no obvious reason.    From that point onwards the car has been running rich on idle, won’t really rev under load without a ton of black smoke and the odd backfire, and dying as a pull up to a set of lights unless I keep the revs up around 1500rpm. In addition when shutting down the car that same night (I was 10 minutes from home) I noticed one of the turbos was significantly noisy on wind down when shutting off the engine. After letting the car cool down overnight it starts up fine, although once it gets to temp the revs start to creep up and down, the exhaust is darker than it should be and it also sounds like it’s running rich (fat note) I’ve put a new set of plugs in it - no change, the old plugs all seemed OK with two of them being somewhat richer/fueled up than the other 3 with 1 being borderline. I’ve smoked tested the intake system via the front of the Turbos, found a split vacuum hose going to the factory boost gauge sender, which I have since replaced.  Also found another leak on the gasket coming off the rear turbo outlet, have also replaced this. After fixing both of these leaks - still have the running rich issue. I’ve also tried another pair of AFM’s - no change here After pulling off the front turbo intake pipes, there is obvious shaft play in the front turbo, which now hisses loudly on light revvs although I can’t see why this would make the car run funny even under idle. I’m curious to know why it’s running rich before I potentially replace/rebuild turbos. The car is completely stock <50,000kms  other than an exhaust. Oil and coolant are all clear. I haven’t bothered with coil packs as it looks like they won’t be the issue due to condition of the plugs. Any help appreciated as I cry myself to sleep!
    • No probs at all. I used to love trying to dig up obscure info for those in need where possible going back 20+ years on SAU.  I did have another look and couldn't come up with any closer match. I'm leaning towards those skirts in your first pic are custom fitments, cut down/extended or from another car entirely and modded to fit an R34 sedan. I would've thought someone in Japan had them and taken a photo at some stage over the last 2 decades but there's nothing. Someone out there must know surely.
×
×
  • Create New...