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cruiser_guy · 11-21-03, 03:04 PM

[quote author=Overlord link=board=12;threadid=7786;start=msg66201#msg6620 1 date=1069437921]
The 12H-T is a IDI turbo with piston skirt cooling. Same block as the 2H, but different head + turbo.
[/quote]
By IDI are you saying In-Direct Injection? The 13B-T is direct injection, I've seen one with the head off and I'd far rather have direct injection (swirl chamber in the piston crown) over indirect injection (pre-combustion chambers). There is less to fail and I've had a precombustion chamber on my 3B fail :'(!

Are you sure on the piston skirt cooling? I KNOW the 3B has the piston skirt cooling ('cause I had to pull the nozzles to replace the cylinder liners on the engine going into the FJ55) and I'm 99% sure the 2H does not have it and IF the 2H and 12H-T share the same block then the 12H-T doesn't have it either! It's part of the block and sprays the underside of the piston with oil. The spray nozzles are about 1/2 way up the side of the block on the 3B.

11-21-03, 03:04 PM	#11
cruiser_guy IH8MUD Lifer Join Date: Jan 2003 Location: Mixco, Guatemala/Cranbrook & Vancouver, B.C., Canada TLCA# 16387 Posts: 7,307	Same ol Diesel ?? [quote author=Overlord link=board=12;threadid=7786;start=msg66201#msg6620 1 date=1069437921] The 12H-T is a IDI turbo with piston skirt cooling. Same block as the 2H, but different head + turbo. [/quote] By IDI are you saying In-Direct Injection? The 13B-T is direct injection, I've seen one with the head off and I'd far rather have direct injection (swirl chamber in the piston crown) over indirect injection (pre-combustion chambers). There is less to fail and I've had a precombustion chamber on my 3B fail :'(! Are you sure on the piston skirt cooling? I KNOW the 3B has the piston skirt cooling ('cause I had to pull the nozzles to replace the cylinder liners on the engine going into the FJ55) and I'm 99% sure the 2H does not have it and IF the 2H and 12H-T share the same block then the 12H-T doesn't have it either! It's part of the block and sprays the underside of the piston with oil. The spray nozzles are about 1/2 way up the side of the block on the 3B.