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Fj20 Turbo?

Ghostrider

By Ghostrider,
in Classic & Vintage (1950's-1980's)

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Ghostrider Grand Master

Ghostrider

Posted
Posted

Hi Guys,

I have this FJ20 Turbo, it has a .63 rear housing and buggered if I know what else.

What I'm trying to find out is where it came from.

Is it off an S12 or Dr30 FJ20.

Would apprecioate your thoughts and opinions along with some good old fashioned know how.

Cheers,

Dennis

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discopotato03 Grand Master

discopotato03

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That is off a DR30 FJ turbo , if the exhaust housing is .63ARR its the early non intercooled type . The give away is the actuator mounting bracket and the O2 probe hole in the exhaust housing . The fact that the waste gate flap valve plate is separate from the dump pipe elbow means its Skyline not S12 . The S12 manifold put the turbo higher and further forward , the S12's dump reaches lower (longer) and the dog leg in the oil drain pipe is not as extreme .

That exhaust housing is desirable to those who like hybrid T3's for the same reason the VG30 housing is desirable to ceramic BB RB owners . The thing is model specific to the R30 FJ20 and fits Z18's , don't know about L6 turbo because I've never seen one . T3's really are dinosaurs mainly because of wheel design particularly the turbine/housing . Unfortunatly Nissan used the small OD turbine variety and their own design of housing and gate because it was a bit more compact than the generic Garrett/Ford style most other things used in the era . The largest of their family was the VL model Garrett/Nissan T3 for a low compression (7.8) low boost (about 5 lbs) 3L (180 cu in) 150 Kw engine . At least that version is an OEM so a known quantity , I can look up with better dinosaur variations but cost's get beyond the VG30 BB for inferior results . Engineering over design always costs more and does not always give a better result .

Cheers A .

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Ghostrider Grand Master

Ghostrider

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Disco,

The L20ET Turbo from the PNV is identical in every way except that it has an .48 rear housing.

What are you telling me, should I go with it or get something else and have you looked at the other thing yet. Does it serve our needs?

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discopotato03 Grand Master

discopotato03

Posted
Posted

Dennis the other things were called TB03's and can be found on things like the non RS500 Sierras and some US spec cars . Their turbine /housing was later technology (lighter/better aero) still used .48 ARR but better technology . It wont look like L20A or FJ T3 plus dump pipe will will look non std . L20A 's are difficult to get good turbine response from with dinosaur era turbines and bearings because of small cylinder capacity and cylinder head/manifolds designs . Have to go now got a train to run up to Syd .

Cheers A .

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