Title: 2j + 3s = Homebuilt Hybrid
Description: My Motor Assembly pics
Distrb - February 17, 2009 07:36 AM (GMT)
Since there's a little discussion around the topic of Altezza turbo motors, i thought I'd post up a few pics of my turbo motor for my 3sge powered Altezza. I'm pretty sure I'm not pioneering this at all, as surely someone else out there has done this previously. However I've not yet managed to find anyone to ask for information, so made a few mistakes a long the way (3sgte pistons anyone?). All i can hope is that this info serves as a bit of inspiration for someone else with their project or just simply shows that with a little bit of work there is another option than spending a mint on Toda Gear if you're clearly not after big power. (machining, rods and pistons cost me less than $1K and i bought new!)
Anyhow here's the detail: (all images are thumbnailed)
Block
Stock Altezza 3sge
Very Slightly Decked and Honed
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Pistons
Pic 1 - Genuine Toyota 2JZGTE pistons (Same Bore and same Gudgen Pin size)
Pic 2 - Machined Skirt to clear 3SGE oil squirters, all evenly balanced. (Die Grinder Special
Rings - Genuine Toyota 2JZGTE (Provide Acceptable tolerances)
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Conrods
Pic 1 - Genuine Toyota 3SGTE Conrods (Gen 3) Balanced End to End
Pic 2 - Gudgen Pin end machined for clearance inside 2J Piston (Die Grinder and Linisher special)
Pic 3 - Rod fitted to piston
Conrod bearings - Genuine Toyota 3SGTE
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Distrb - February 17, 2009 07:54 AM (GMT)
Crankshaft
Pic 1 - Genuine Toyota 3SGE (Altezza Gen)
Pic 2 - Counterweights machined to clear 2JZGTE pistons(due to lower pin height) and balanced (blue mark)
Main & Thrust bearings - Toyota Genuine
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Assembly Pics
Pic 1 - Crank, oil squirters & Main Bearings fitted and mains torqued
Pic 2 - All Pistons & Rods in with conrod bearings fitted and torqued, stock head Gasket
Pic 3 - Deck Height - Piston is at TDC - 1mm lower comp height
Pic 4 - Stock Head, sump, Windage tray and oil pan fitted.
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That about it really, there isnt a huge amount of machining required over what you should normally do. Only exception was balancing, mainly the front pulley, bolt, crank, cambelt gear, flywheel, pressure plate, clutch and flywheel bolts. With these pistons( with their larger dish and a good deck height), with my block and head (all oem and unmachined other than minor decking of the block) and stock head gasket leave with a static compression ratio of 9.5:1 . Which i think will leave me with good off boost driveability with the and able to wind boost into it reliably.
I havent got the motor running with the turbo yet (mocking up intercooler and downpipe etc) but will be updating with results (might even put up a proper build thread) when it does get running, in the next couple of months all things being equal.