Jump to content
SAU Community

Recommended Posts

a few months ago my RB25det motor (10000km since rebuild) and turbo packed it in much to my annoyance, and my efforts to comp test it returned a bizarre 0psi reading for cyl 1. i retested multiple times, but always 0psi, no budge of needle at all. other cyls were all around 140psi dry.

ive finally got it all replaced (see my avatar). while this was a very painful and drawn-out exercise, i quite enjoyed pulling down the old motor and having a look see.

seems the most likely cause of failure was a dodgy main oil line connection between the turbo and block. this was so loose i could pull it off with my bare hands, and may explain why i lost 2-3L of oil in no time. i guess this then caused turbo failure, and maybe the debris got in and smashed the engine.

im interested in other opinions, or just have a laugh at my mashed engine and think yourself lucky it wasnt yours!

the pics show

-the turbo damage (i assume its not supposed to look like that)

-pistons 1 and 3 (piston 3 has indentations, but still returned 140psi dry comp)

-corresponding pics of the head for cyl 1 and 3 (the head was reconditioned 10000km ago and would be worth good money. is this damage critical? can it be repaired? and what is the head worth?)

also, all the good bits from the old RB25det are for sale. south west syd location.

any comments or questions, hit me up!

thanks for any help guys! happy driving!

mitch

post-40626-1204516804_thumb.jpg

post-40626-1204516867_thumb.jpg

post-40626-1204516985_thumb.jpg

post-40626-1204517014_thumb.jpg

post-40626-1204517053_thumb.jpg

post-40626-1204517622_thumb.jpg

Edited by gt-ahhh!
Link to comment
https://www.sau.com.au/forums/topic/208709-0psi-comp/
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


  • Latest Posts

    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
×
×
  • Create New...