Identifying engine internals
02 April 2012, 12:02 PM
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Identifying engine internals
How do you know what pistons, rods and crank you have? I recently purchased a cdb with "sti forged" internals. Im going the 2.1 route so all internals are being replaced but how would i confirm if existing internals are what there said to be as i may be looking to sell them?
02 April 2012, 05:24 PM
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02 April 2012, 07:18 PM
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Not sure what they would mean but I would guess at having STi pistons. The pistons from MY97-MY00 are good quality forged items.
When the pistons are out, it will be obvious from the presence of casting marks if they are forged or cast.
02 April 2012, 07:20 PM
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How would you know Sprint Chief? cheers
02 April 2012, 07:30 PM
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have you got any pictures?
02 April 2012, 07:39 PM
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i can soon get some. stripped the block and put the bits through the parts washer at work, so will get some pics tomorrow
02 April 2012, 07:52 PM
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Pictures would definitely make it easier. Both top view and a good shot of the underside can help identify the pistons
02 April 2012, 09:03 PM
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OEM forged pistons will have HF1/2/3/4 stamped on the underside of the crown and the underside will be smooth.
OEM cast pistons will have cross hatching on the underside.
Mick
02 April 2012, 09:10 PM
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Version 3~4 WRX cast piston on the left - Version 3~4 STi HF forged piston on the right.
Mick
02 April 2012, 09:11 PM
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Lightning bolt from the wizard again
Evening Mick
02 April 2012, 10:24 PM
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Top boy merlin. Thanks for that. Its the cast pistons then. looks like there for the bin then
02 April 2012, 11:17 PM
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Quote:
Originally Posted by
prodriverules
Lightning bolt from the wizard again
Evening Mick
Evening Ryan
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