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Rebuilt Rb25det issues

KyoyaR33
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KyoyaR33 Newbie

KyoyaR33

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Howdy all,

 

I had my rb25det S2 rebuilt and finally started it today but have run into a few issues 

Engine sounds like a a diesel easiest way to summarise like small ticking, gets louder when revs are slightly adjusted 

The engine builder repainted the engine cover leaving no where for me to go off with lining up the CAS so have it as central as possible so not sure it that could be affecting it?,

changed the gearbox fluid too but won’t seem to go into gear when running, and only 1 to 4 when off having a hard time finding 5th and reverse

anyone got any ideas or a base for me to start off?

much appreciated 

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https://www.sau.com.au/forums/topic/486065-rebuilt-rb25det-issues/
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GTSBoy Grand Master

GTSBoy

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Posted

Use a 2' length of hose (that's 2 foot, not 2 inches) as a stethoscope to localise the source of the ticking. From cam covers? From exhaust or turbo manifold gasket? From injectors? From lower down in the engine? Etc.

Use a timing light to set the timing.

Put Redline Lightweight Shockproof in the box. It's not the very best thing for the box, but it will take a box that refuses to engage a gear with other oil, and make it engage a gear. I had to put it in when I installed the R33 box I have in my car. It would not select ANY gear when running. Smurf jizz made it work. That was >10 years ago and I still use it. I'm stuck with it now.

Failing that - rebuild the box.

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KyoyaR33 Newbie

KyoyaR33

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1 hour ago, GTSBoy said:

Use a 2' length of hose (that's 2 foot, not 2 inches) as a stethoscope to localise the source of the ticking. From cam covers? From exhaust or turbo manifold gasket? From injectors? From lower down in the engine? Etc.

Use a timing light to set the timing.

Put Redline Lightweight Shockproof in the box. It's not the very best thing for the box, but it will take a box that refuses to engage a gear with other oil, and make it engage a gear. I had to put it in when I installed the R33 box I have in my car. It would not select ANY gear when running. Smurf jizz made it work. That was >10 years ago and I still use it. I'm stuck with it now.

Failing that - rebuild the box.

I don’t really have any ideas how to set the timing on the CAS 😂,

sounds like the top, sounds like it maybe misfiring as well as ticking, 

got the box sorted 😌, must of been a air bubble on the clutch side

GTSBoy Grand Master

GTSBoy

Posted
Posted

Hmm. I should have thought of the clutch bleeding issue. It should be #1 thought for "can't select gears".

As to "sounds like the top".....have you actually gone out with the stethoscope and tried to pin it down any more than that?

And, buy or borrow a timing light, and set the timing properly.

  • Like 1
Duncan Grand Master

Duncan

Posted
Posted
10 hours ago, KyoyaR33 said:

....small ticking, gets louder when revs are slightly adjusted 

I'd suggest having the engine builder listen to it, especially if they assembled it, and minimise how much you run it in the meantime. It may have a serious issue like a big end bearing from the description and I assume the rebuild was not cheap

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