FJ40 12HT Swap & 60 Series Axles

Joined
Oct 26, 2013
Messages
680
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Laytonville California
Also got the block, head, and crank paletized and ready to send off to the machine shop on Monday.

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Joined
Oct 26, 2013
Messages
680
Location
Laytonville California
Just got my Toyota CT26 turbo back from the shop. It’s been fully rebuilt but still has the original blow-off valve.
New impeller, bearings, shaft, oil fittings etc.
pics to follow.
 
Joined
Mar 30, 2011
Messages
5,554
Location
Huntsville AL or Yuma AZ
I think you mentioned just doing a hone on the cylinders, so you are going back with factory sized pistons? How did the ring lands on the original pistons look? Are you replacing your pistons with new ones? Many many years ago on my first engine rebuild I also opted to do a hone and keep factory size bores, it worked out fine but the piston to cylinder wall clearance was on the "service limit" spec which I wasn't enthused about since all the other tolerances were spec. Since then I always go one size over on my rebuilds.
 
Joined
Oct 26, 2013
Messages
680
Location
Laytonville California
I think you mentioned just doing a hone on the cylinders, so you are going back with factory sized pistons? How did the ring lands on the original pistons look? Are you replacing your pistons with new ones? Many many years ago on my first engine rebuild I also opted to do a hone and keep factory size bores, it worked out fine but the piston to cylinder wall clearance was on the "service limit" spec which I wasn't enthused about since all the other tolerances were spec. Since then I always go one size over on my rebuilds.
The cylinders were in excellent condition and everything was within spec (a touch closer to tolerance than I'd like but it should be fine).
Im still planning on doing a hone and new factory size rings/bore. If the machine shop finds something I didn't find, Ill address it.
 
Joined
Mar 30, 2011
Messages
5,554
Location
Huntsville AL or Yuma AZ
The cylinders were in excellent condition and everything was within spec (a touch closer to tolerance than I'd like but it should be fine).
Im still planning on doing a hone and new factory size rings/bore. If the machine shop finds something I didn't find, Ill address it.
Copy that! If you decide you want to replace the pistons for some "0" mile ones I do have these I removed from one of my NOS 12ht's. That engine had some moisture intrusion from storage so I installed 1/2mm oversize pistons in it to clean up the cylinder. For Sale - 12HT pistons [AL] - https://forum.ih8mud.com/threads/12ht-pistons-al.1226771/
 

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