r33 GTR - combustion knockings, burning oil smell??

[Tomak]

r33 GTR - combustion knockings, burning oil smell??

Hello,

I am experiencing sometimes combustion knockings in my r33 GTR especially on cold weather on heavy load during the night

When i drive during the day on sun i dont have that problem but my car goes way slower at high temps, i think this is normal...

On the night it accelerates much faster getting cold air and then i have that problem, hear the knockings (not always but sometimes )

My car was tuned up to 500HP on dyno at profi garage. On the dyno we did not heard any knocking, it got more than 20 dyno tests.

So it looks like my engine is living its own life. Why is that happening and should i worry about it?

When i hear this knocking sound sometimes i take my foot of the gas pedal immediately ofcourse, everybody tells me this. But i want to race my car hard on the track soon so what can i do with that problem?

I was already at 3 different tuners and always have knocking at high HP between 450-500Hp. Below 450hp there is no knocking problem even during the night ;/////

My engine is rebuilded, forged pistons and rods, OEM head. custom exhaust manifold with  Borg Warner EFR 7064 T4 A/R 1.05 Twin scroll turbo. Tuned on LINK G4+, siemens injectors 650cc, Everything was bought brand new, invested shit load of money in that car and i dont know what to do with that. 

I already did 50 000 km after rebuild so the engine is still running very good for almost 3 years now.....

Also i am experiencing lately big engine oil consumption. it takes 1 liter per 1000km. And i dont see anywhere any oil leaks. f**k!

I have checked  pressure on cylinders, its ok....

Maybe head gasket.....i dont know, i dont see any leaks on the block etc....

Maybe the seals on my turbine got messed up already? I can smell the burning oil on heavy load. When i dont go on boost and drive at stable speeds i dont smell that strong oil burn..... What do you think about all this. Any ideas? The smell is so heavy that driving with open windows is really pain on my ass.

My car is getting on my nerves lately and seriously thinking about selling it after all my hard work i done to this car. Three f**king years struggling with  everyf**kingthing and end up burning oil somwhere and knockings i dont know why. What the f**k!

Oh yeah o forget to tell, my friend told me to sell this f**king RB26 engine and change it to RB25 NEO. What do you think about that?

Its also AWD and he said much better with maitenance and once is build for a track purposes, about 500hp is a one strong matherf**ker. I am thinking to give a try with that maybe during the winter....

I went for a night drive tonight and guess what, no a single knock....yesterday big knocking like in the row one after another. how do you explained that?

 

 

 

[djr81]

So in short it has been knocking and is now burning oil.

Get a compression gauge and check the engine.  Odds are you have damaged the ring lands in one or more pistons.