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Rb25Det Rebuild Questions

Haz33
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Haz33 Apprentice

Haz33

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Hey Guys,

About to embark on a rebuild of an RB25DET, and have some questions.

To get the basic stuff out of the way :

Planning a basically stock build. The motor doesn't have a tonne of k's on it, and suffered a boost related issue which was thought to be a head gasket or head problem.

Neither of these things proved to be the issue (Issue still not found).

The plan is to build it to stock spec, and consider more power later.

Does anyone have a particular opinion on Brands for Rings, bearings, gaskets.

Does anyone know a good place to get these items in Brisbane? I trust Brisbane Turbo and Tuning, but have been out of the scene for long enough to have forgotten who else is around.

Does anyone have experience with building the RB25DET, that might point out an possible traps or tricks i should know about?

I'm planning to do rings, bearings, VRS kit (Since the head is already stripped). Anything else that would want doing in one of these?

I've rebuilt an engine before, but not one of these, so I'm open to all the suggestions and advice you can throw at me.

Thanks in advance.

Jeff

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Haz33 Apprentice

Haz33

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Hey,

I'm starting to think i either asked something stupid, asked it in the wrong place, or somehow in my searching the forums, didn't see an identical thread?

Is this the case? or is it simply a case of no-one having anything useful to say?

Cheers,

Jeff

m.j.h Mentor

m.j.h

Posted
Posted

You really should go with some decent pistons and a bore while it is all apart.

Stock ones are fine but prone to detonation.

If you don't know what caused the problem then it will probably happen again unless fixed

What happened to the motor anyway to do this, low compression or blowing lots of smoke?

Haz33 Apprentice

Haz33

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Hey m.j.h,

From what i understand, the car had been off the road for a year.

The owner installed a new FMIC, and started driving it.

One day it overheated, started running really rough...

Dropped the oil, and it was full of water.

The head has been checked, and no problems found.

The headgasket didn't show any signs of damage, or water or oil.

The turbo has been checked, and seems to be fine.

If the head and headgasket come back fine, i'm wondering if the block is ok... maybe a cracked water gallery or something?

Pricing up replacement engines at the moment, considering just throwing a low k import in it, while I get the old block and head crack tested, then put it on an engine stand.

Haz33 Apprentice

Haz33

Posted
  • Author
Posted

Hey Guys,

Looking at going the 25/30 route at the moment. Just need to work out a few more details.

So for now, it's a slow slog through the RB30DET forum to get my questions answered...

Either way, there will be some parts for sale before this project is over :)

Haz33 Apprentice

Haz33

Posted
  • Author
Posted

Yeah,

This is the GF's R33/ Our toy... I have a 92 Prelude, and she has an 06' Tiida, plus, we're in the process of rebuilding the 2003 ZZR 250 i bought her for her birthday...

So, we have plenty of wheels... lol.

But, we don't want to have the R33 sitting for too long, so i'm making sure I do the research before we commit to what do to get it going again.

Actually haven't picked up the R33 yet, it gets delivered mid next month, so we have some time to work it all out.

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