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Location:
Adelaide
Registered:
June 2002
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The Crown Riseth Again
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Tue, 23 March 2004 23:01
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Following the disasterous Foreign Object Damage suffered by the crown 5 weeks ago,(NEVER, EVER LEAVE YOUR AIRFILTER OFF.....) I finally regained enough enthusiasm to pull the engine down to
assess damage. Despite what the initial boroscope indicated (massive scoring of the bores) the reality has turned out to be that there is actually no damage to the bore, pistons or rings. (It seems the boroscope makes things look worse due to the magnification and powerful light source) The lack of compression was caused by the compression rings being gummed up by the fibreglass powder and being mechanically wedged into the ring grooves-hence preventing them from being shoved out onto the cyl walls and sealing up.
Short story-instead of needing a head gasket, 6 new pistons, a re-bore and rings (around $2000), I need only a head gasket. Yay. Cleaning and reassembly has commenced.
In addition-I've also come across a new turbo. A friend who was in japan recently mentioned he had picked up a TRUST turbo (TD06) from a rotor. I figured it'd be a medium sized one with rotaryish ratios (bigger rear/smaller front)-HOWEVER-once I saw the turbo in the flesh, it turned out to have a larger compressor than the T4 with a similar ex wheel and a
more free-flowing split pulse housing. I then had the turbo checked by bill keen yesterday. Turns out it is actually a trust TD07 that has freshly been rebuilt (virtually unused) with a new comp wheel and with a flow capacity of around 600 hp. When I told bill it could be mine for 650, he said 'bargain-snap it up'. (my T4 is worth 850-950 so the changeover will MAKE money..) He also mentioned that the TD07's are a
truck series from mitsubishi and have huge shafts and full 360 deg thrust bearings as standard. Looks like I've had a small win. Oh yeah, and Mike from MV has found me a suitable converter to replace the one it's got now.
That means it'll actually be able to use peak torque instead of flashing out to 4000+ once the boot is put into it.
it begins again......
Sean
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