Jump to content
SAU Community

Some smoke

hehehehe

By hehehehe,
in Engines & Forced Induction

 Share

Recommended Posts

hehehehe Contributor

hehehehe

Posted
  • Author
Posted

i got afc analog one with the knob would that affect anything and i never noticed it before as it never ever did it i notice it in the passenger side mirror are you guys sure this is safe.

also really dumb question how do you guys put those movies and pics under your user name

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-543066
Share on other sites
dojobi Experienced

dojobi

Posted
Posted

The one knob AFCs are essentially useless. I'd say I'm almost 99% sure that's what is making you run rich and causing the smoke. They only allow you to add/remove fuel across the entire rev range, so you cannot fine tune it. So if you are adding 5% fuel at 5000rpm (just as an example), you are also adding that at 1000rpm. Not efficient at all. To be honest, I have no idea why Apexi made it.

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-543528
Share on other sites
rs73 Grand Master

rs73

Posted
Posted

I got greyish smoke too :P

A couple months ago the engine made tapping noise which sounds very very similar to my old Mitsubishi Galant with valve stem seal problem :( unlike my old Mitsu where noise is still there all the way, in my skyline the noise is gone when engine is warm

But after detonation problem on a recent cruise, the cold start tapping noise is gone and hasn't come back since.... wtf????

Must be something else...

turbo seal on its way out?

is that tapping noise = turbo wheel touching its housing?

that detonation (due to over boost to 15psi) could have chipped the wheel edges so it no longer touch the housing?

I'm sure exhaust wheel still there, car can still make that much boost over 10psi (but I've turned it down to 8psi since)

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-543543
Share on other sites
Al Grand Master

Al

Posted
Posted
Originally posted by rs73

I got greyish smoke too :(

A couple months ago the engine made tapping noise which sounds very very similar to my old Mitsubishi Galant with valve stem seal problem :D unlike my old Mitsu where noise is still there all the way, in my skyline the noise is gone when engine is warm

But after detonation problem on a recent cruise, the cold start tapping noise is gone and hasn't come back since.... wtf????  

Must be something else...

turbo seal on its way out?

is that tapping noise = turbo wheel touching its housing?

that detonation (due to over boost to 15psi) could have chipped the wheel edges so it no longer touch the housing?

I'm sure exhaust wheel still there, car can still make that much boost over 10psi (but I've turned it down to 8psi since)

If the turbo wheel was touching the housing it would whale/howl not tap.

I would actually see a mechanic and do a compression test, amounst other checks.

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-544637
Share on other sites
wrxhoon Grand Master

wrxhoon

Posted
Posted

hehehehe , try this go downhill a very long and steep hill stay in 4th or third gear do not touch the accelerator untill u get to the bottom when u get to the bottom of the hill eccelerate look in the mirror for smoke if u see blue smoke its u r valve stem seals . if it blows blue smoke under hard ecceleration and or high revs then its piston rings . just black smoke running a little rich but u'll get more at high rpm if running rich .

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-544711
Share on other sites
rs73 Grand Master

rs73

Posted
Posted
Originally posted by Al

If the turbo wheel was touching the housing it would whale/howl not tap.

I would actually see a mechanic and do a compression test, amounst other checks.

Al,

My turbo squeal like a mad pig on cold.... is that normal?

When warm it doesn't....

Anyway my car is now in the "hospital" now... hopefully

nothing serious...

Link to comment
https://www.sau.com.au/forums/topic/25545-some-smoke/#findComment-545055
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Dose Pipe Sutututu
      Neil's R33 Gts-t Build

      By Dose Pipe Sutututu · Posted

      Let's hope that's not a copy pump either. There were so many copies of them back in the day.
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Damn it, I was at work last night, and stayed in a room there during the storm with the car outside, but undercover, I just went downstairs and well....there was a large steel locker that has come from some place last night, it wasn't anywhere I could see yesterday, and yeap, it landed on the fraking car....of course it did..... LOL So, I'll need to take it back for paint and panel, luckily it was only the boot that took the hit, so it could have been worse Serves me right for staying at work and getting on the cans with some of the boys
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Yeah, really happy with how it all turned out As for aftermarket lip, nah, I'm not really a fan for practically reasons on a street car that gets driven everywhere  I did have the full lower kit on my 2015 STI, but found the front lip scrapped alot, even at stock 4x4ish ride height As the NC sits now, with the lowest point of the car at 110mm, so just legal, some steep driveways and steep speed humps will still "just" scrap those little plastic OEM air dam thingies on the undertray just before the front wheels
    • Dose Pipe Sutututu
      Hypergear Turbochargers and High flow Services Development thread

      By Dose Pipe Sutututu · Posted

      Here's one I help build and tuned a decade ago, Garrett  GTX3071R Gen 1, T3 twin scroll 0.83 rear housing. Went from larger 272 cams down to smaller Tomei Poncams to help with the low end. S13 non VCT motor. Car was purpose built for the track, hence low down was the focus. Note the actual dyno chart shows lower boost, however the EBC and boost gauge showed 1.9Bar (Ignore the torque, I was young and didn't know how to set derived torque)  
    • hypergear
      Hypergear Turbochargers and High flow Services Development thread

      By hypergear · Posted

      I’m doing some side developments on SR20det S13 engines, its one my hobby cars used it to compare flow capacity of some smaller size wheels. SR20det is one of another JDM legendary engines I'm sure there are plenty of SR enthusiasts on this forum, I will share results some common turbo configurations here. a quick run down of what the car is: Wide body 180sx Type X with black top engine (blue). It has: Stock bottom end Haltech 1500 ECU 5-0 motorsports trigger kit Kelford SR20DET Beehive Spring with Titanium Retainers Kelford Cams SR20DET S13 188-B 268/272 Cams G25-660 Turbocharger in T2 .64 rear housing internally gated ARP Head studs MLS head gasket 1000CC ID injectors Walbro 450L Fuel pump Front mount cooler kit JJR’s 3 inches turbo back exhaust (its too short for the 180sx it had to be extended) Pump 98 fuel Hub Dyno tune So far made 270rwkws at 22psi full boost by 4500RPM. Engine is very knock limited hence a pretty bad looking top end. From previous experiences it seems like SR20dets are happier with bigger size turbine, some thing like a GT30 would make way better top end, but on same time response is lost. It won't be a problem with S15 VCT engines. I'll be testing alternative turbine housing, turbine wheel and possibly dump pipe options for extra flow to resolve the problem and of course E85 would resolve all the issues.            
×
×
  • Create New...