Think I Broke My Engine

[Fly_With_Sky]

hey guys

i think something has gone terribly wrong with my motor. (rb25det in r33gtst)

On the plenum, there is a little dent on one of the cyliners (directly under the throttle cable), looks as if someone took a hammer and put a nice smooth dent in it. The pic shows what i mean...

Now as i was driving home today, when coming onto boost it felt as if the engine stopped for a second as it stopped accelerating (i have a feeling something broke in that second) and then kept on going as if nothing happened.

Have a possiby broken a piston or something? The engine isn't blowing any smoke out of the exhaust either...

What do you guys think has happened here? I will try and post up a pic of the plenum asap

Cheers

Edited August 26, 2006 by Fly_With_Sky

[B0oStEr]

Without looking at a pic I'd say the dent was always there to clear the cable or something.

The hiccup is most likely a minor problem like a fault in the afm.

It's unlikely to be a damaged piston or anything to lose sleep over.

[Fly_With_Sky]

i hope thats the case, but i have a feeling that the dent isnt there to in order to give clearance because i can tell you i dont remember it being there before...

[Duncan]

well someone with an rb25 can confirm but I agree with Booster it looks factory to clear the cable to me, way too regular.

EItherway, what you described sounds like a very common missfire coming onto boost, try a search for missfire and have a look in the FAQ section.

[FSTR32]

I dont think its for cable clearance reasons as there is another small dint next to it plus its quite a weird shape.

Maybe your just being paranoid and looking for a reason or fault that you would not have noticed before but do now because your lookin for it?

[TurboX]

The depressions (the covers not yours) are cast in to clear the current cable and possibly to get you to put a pic up were we can ask you to spray some wd 40 on the throtle springs and assy to lubricate it and stop further corrosion.

[R33S2]

ha aha it is a factory clearance aha ha

[BOOSTD]

Could have been boost cut, feels like the world is ending the first time you feel it.

[Slide]

1st is for throttle cable clearance and the second is for the optional cruise control cable.

Completely unrelated to a misfire issue and all came from factory that way with the 2 indentations in the plenum.

[Fly_With_Sky]

oh thank god, cheers guys

[Links]

hesitation was probably caused by boost cut.. nothing to worry about there as well..

[LBR33]

i agree it sounds like boost cut to me too

[Ronin 09]

it's cactus - dents can commonly occur on a 33 engine without warning.

throw out that 33 and get a 32.

[fEkuaR]

hahahaha factory cast. How would ANY engine fault cause you to get a dent in the plenum?

[Cubes]

Fly_With_Sky,

Sorry buddy but I'm LMAO.

You are one paranoid bloke.