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Rb20Det Advice/mods/rebuild

QVRTHS

By QVRTHS,
in R Series (R30, R31, R32, R33, R34)

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QVRTHS Explorer

QVRTHS

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Hi Team

No doubt this has been extensively covered previously, and I've had a look on other forums, however info seems to be conflicting as to what to do, how to do it etc.

I have just bought an R32 GTS-t.

Its done 130KM, and looks like the engine has never been removed before.

Im looking at pulling the engine out to do a full clean up (Engine and engine bay are quite dirty) so was looking to get some advice regarding this.

Firstly, is it easier to remove the engine with the gearbox attached or not? - I have done a couple of conversions previously, but I always went out the bottom as everything was being swapped over anyway. - I'm going to buy an engine hoist and stand so I can work on the engine, so I'm assuming leave the gearbox in the car? If someone can advise best way to go about it, would be great.

Secondly, the engine has done 130KM, and the cambelt was last done at 80KM in Japan, the engine seems to be running very well, so am on the fence about whether to rebuild it or not, seeing as I don't actually know the history of the engine. - Should I go ahead with a rebuild, and how far should I go?

Thirdly, I'm wondering if anyone can share their experiences with some basic mods I can do, with maximum bang for buck.. The car currently has a 3" cat back exhaust, weird FMIC (think its been put on in Japan, not very big) and an Apexi AVCR.

I know the main thing is to get a 3" dump and hi flow cat, but what else can I do to get some decent power, at minimum cost?

Also, thinking about an rb25 turbo, however is it truly bolt on swappable, or is there some modification to the water lines i need to do?

Cheers guys.

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StevenCJR31 Veteran

StevenCJR31

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If it aint broke- dont fix it

Spend your money on changing fluids, cleaning/swap out any leaking gaskets /upgrade your exhaust to 76 mm / tune /25 turbo/service and your done

QVRTHS Explorer

QVRTHS

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Hi Team, thanks for your advice! - Jiffo sent me a novel on what to do so thanks Jiffo for taking the time, -

I have given a complete service (Oil, Fuel Filter, Oil Filter, Coolant Flush) and its running smooth, - I bought a few litres of degreaser and soaked the bay in it, hosed it off, and it came up a treat.

It does seem to have a coil pack issue, But as Jiffo advised, will start with a set of plugs and cleaning the coil packs.

Now on to the latest news - Funnily enough even though I just purchased this car, I have now also just purchased a 1996 Stagea with an Auto RB25DET (88000KM), and am looking at dropping the 25 into the GTS-t, and putting the 20DET into the stagea. Thoughts?

I know it sounds retarded putting an RB20DET into a Stagea, but the Stagea requires some body work before it can go back on the road, so it may not even get the 20DET, it may just be parted out (New thread in Stagea parts available possible later)

I've had a long search in regards to putting an Stagea AWD RB25DET into an R32, however most of the threads about GTS-4's, However I have seen that the sump needs to be modified? - I can't seem to find any details on this, does anyone know anyone that knows what they're doing when it comes to this? (Pics, Tutorials?) - Or alternatively, someone around Brisbane that can do it for me?

Apart from the sump, what else needs to be changed/modified? - Can i use the R32 engine ECU Harness on the 25DET (saves messing around with dash plugs)

Thanks Team

QVRTHS Explorer

QVRTHS

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dont do it unless you want to seriously devalue the stagea, it may not even be registerable afterwards as you are putting an older motor into a newer car

Fair enough, I bought the Stagea for $1K. So will prob end up cleaning it up a bit, chucking some rego on it and selling it... Then with that coin go buy an r34 rb25, saves time messing around with the sump etc.

Cheers

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