Isuzu G-series Twin Cam

G200Ws were fitted to mainly the early Piazza and 117 coupe. 117s had inlet manifolds out to the RHS with upright oil filter. Piazzas had "over the top" inlets with forward-down oil filters. All G200Ws were EFI. A date stamp should exist on the left side of the block (eg 79). Maybe others ...

Do you have a specific model or engine in mind? EG - gtr, zzr, 117, piazza, G161, 180, 200W etc?

Reply in brief: The top manifold is a typical 5-injector type from a 117 Coupe. They are probably the most common G200W imported into Australia. Not sure what the earlier G161W & G180W 117s had - I'll have to check. The 117 was originally built on the Florian floorpan (sedan version of the Chevy...

I thought pt might hate me - I sold him one for $140 plus freight - but then I realised $US vs $AUD. Phew - not too bad. (Mine are new, albeit NOS.) I assume the ones you can get are not genuine? I'm ok for them - I still have one I might sell - but I suspect it would be well worth while getting mor...

email sent.

WA - that's not far. Dang! I was keen as until I saw you were an Islander - you're too far from the mainland! (I'm on the north island of Australia - ie, the not-Tasmania one. That's a Kiwi-type phrase that our Tasmanians find amusing. And WA is WestAust.) Just FYI - there may be 117 parts over here...

FYI - later tensioners have a ratchet. This limits the slackness, hence quieter when starting.
AFAIK they are interchangeable.

I think the G200Ws & blue G180Ws have them, but I'm not sure...

And a new head gasket...

The crank pulls the cams so that part of the chain is always tight.
The tensioner sits in the slack area after the cams, so oil pressure shouldn't make any difference.

John - are you saying that you have a supply but need a Japanese speaker, or are you speculating?
If you have the supply/er, what is the price and quantity available (etc)?

Still interested?
I'm considering selling a G200W with 5speed, but it lacks cams.
It is as I got it several years ago.
I could provide heavily ground G161W cams, or maybe cam from another G200W.
I presume you want the front-down oil filter?
And Gemini sump.

I'm waiting for a reply from PF60ZZR (I PM'd him) after he said: I don't know who said you can't get the cam bearings, that's bulls*#t, my brother arrived back from japan 2 months ago and said they're still available ex-factory and a lot of the performance houses over there, only about $40-$50 per s...

Yes all - stop PMing me! Archangel62's pic is a GT-R. Yes - AFAIK a few did come with square taillights and non-orange and non-white paint jobs. And definitely - GT-R's were random off the production line. (AFAIK hence the GT 1800 but with G161W.) Hence all GTRs have chassis number PR91. If you see ...

Great. Let us know the outcome. But the L1 was the cam recommended to me by someone I highly respect in this area - they even own a production works racing vehicle given to them by the manufacturer because they couldn't get the power he did. The L1 was the build still recommended a few years ago tho...

Did you get the specs?
Did Graham Wilkins Engineering have any info?
PS - Wayne Bell bought my DCOE45s, GTR-Replica manifolds, & Gem 4:2:1 (torque) extractors.

I had a Bellett pump reco'd in SthMelb for $65 years ago (1980s?). At the time, new pumps varied from $unobtainable to over $230. (But years later I got 1 or 2 for $120 each courtesy of the BCCV Inc.) The place was something "Air-Conditioning" (for cars) - a name you do NOT associate with ...

One pump sent COD today.

Jeez yeah! 4 speed with Florian diff (4.1:1). The Florian was bad enough with 3.9 diff and .782 5th Gem box - it needed a 6th gear! I thought you mounted that LHS-starter Rodeo bell to a Gem box (ie ZZR ratios except low 1st and taller 5th)? (You mean I got that box out for nothing?!) I was wonderin...

I presume no interest as yet?
What sort of power/torque was she putting out?
What compression?
Is the 4 speed box a 2-piece (ie, bell splits from centre carrier & rear?)
What brand/model EFI?
And is the EFI manifold the "up & over" type (not outwards RHS)?

Hey 65er,

bellett65 wrote:Mine is a 1995 conversion using wolf 3D the first piston motor with one.

What's your fuel economy like now?
(Last we spoke it was under 20mpg.)

My understanding is that you can fit the (better) ratcheting type to the earlier.

And let me know if you want to swap the upward filter (and front mounts?) for a Gemini/Piazza type filter etc. (I'm in Melb too.)

Don't run HPR40 - it's too thick!! HPR50 definitely seizes them at hi RPM so I'd expect 40W to increase bearing wear rate. These are not a sloppy engine so heavy weight is not required. Normal 20W-50 should be fine (assuming temperate climate) but not GTX-3 etc. As to noise - are you sure it isn't t...

From past VSS queries & straights (in other posts - probably OzGem & IsuzuPiazza), I have misc info including the Nissan Pulsar unit (20pulses/rev etc; hall effect output; it screws straight into Isuzu gearboxs replacing the speedo cable) and some "ratio" info. I'd have to search e...

The speed sensors are st'd in Piazzas - they are part of the speedo (being taken from the speedo cable that drives an optic chopper; 20 pulses per rev?). This signal may then be divided (by the overdrive comp?, by 10?) before going to the ECU. See other posts that discuss the ratios, and using Nissa...

For G200W - around 26" long secondary (from st'd manifold flange; 2:1 section) should provide above 350Nm from 2,000RPM. The G200W will also start gaining again with about 4" exhaust (after dipping at 3"), but this is a bit impractical (splits & ovals are too tricky). And I think ...

They all have some sort of clearance even if too difficult to adjust. Even desmos have zero clearance specified (where negative gaps are not recommended!)
I think the clearances are the usual 0.25 & 0.30mm (in & ex) but I too amn't sure. Oi - Poida!