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 Post subject: Please help - Isuzu Bellet information
PostPosted: Tue Jul 07, 2009 12:30 am 
Hello everyone,
My friend here (Karoo, South Africa) runs a small machine work-shop. He's got a 1976 Isuzu Bellet 1500 sport sedan - with twin side-drafts. It's the only one in South Africa - a classic, they say it will do 120 mph - pretty fast for an 'old' 1500 motor. Problem is, the head gasket has gone, and the head has been skimmed too many times already. He wants to make up an aluminium plate to restore it, but needs to know the stock head thickness. If anyone knows anything about Isuzu Bellets, or where I can find info - I'd be very grateful
update: just found out it's a G161Z motor..

 Post subject:
PostPosted: Wed Jul 08, 2009 2:54 am 

Joined: Thu Oct 02, 2008 11:30 pm
Posts: 40
Location: NZ
g161z is 1600cc and not standard in a Bellett, they came standard in Gemini's, so if you get Gemini's there then get a head from one of them.

Bellett (1500s) came with a g150, so it sounds like someone has done a transplant at some stage.

 Post subject:
PostPosted: Wed Jul 08, 2009 4:18 am 
User avatar

Joined: Wed Jul 30, 2008 7:45 am
Posts: 107
Location: australia
early rodeo's had g161z's as well

 Post subject:
PostPosted: Tue Dec 01, 2009 11:13 pm 
Best I can do....old motor.

http://openlibrary.org/b/OL14193134M/Wo ... ine_engine.

Engine Code: G161Z
Compression Ratio: TX/TC/TD = 8.7:1
Compression Ratio: TE/TF/TG = 8.3:1
Bore: 82.00mm
Stroke: 75.00mm
Capacity: 1584cc (96.66ci)
Power: TX Pre ADR27A = 63kw / TX Post ADR27A = 61kw / TC&TD = 61kw / TE-TG = 50kw
Torque: 119nm (88lb/ft) @ 3400rpm
Compression Pressure: Minimum 125psi (861kpa)
Idle Speed: 700rpm
Ignition Timing: 6 deg btdc set at idle speed
Distributor Dwell Angle: 50 - 54 deg
Firing Order: 1-3-4-2 ***Gemini distributor spins anti-clockwise***
Spark Plugs: NGK BP6ES (NGK BP5ES for tired smokey engines)
Spark Plug Gaps: 0.7mm - 0.8mm
Valve Clearances (Cold): Inlet = 0.15mm / Exhaust = 0.25mm
Valve Clearances (Hot):Inlet = 0.20mm / Exhaust = 0.30mm
Oil Pressure: 7psi (49kpa) at idle
Oil Pressure: 47-71psi (390-490kpa) at 2800rpm
Sump Capacity (without filter): 3.2 litres
Sump Capacity (with filter): 3.6 litres
Cooling System Capacity: 6 litres
Fuel Tank Capacity: 52 litres

Gemini Cam Specs:

Inlet Valve:
Opens (B.T.D.C) 21 deg
Closes (A.B.D.C) 65 deg
Duration 266 deg

Exhaust Valve:
Opens (B.B.D.C) 55 deg
Closes (A.T.D.C) 20 deg
Duration 255 deg

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