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Can I put 4g63T pistons in 4g61t Engine
http://www.4g61t.org/forum/viewtopic.php?f=26&t=38176		 Page 1 of 1
Author:  thomcasey [ Wed Oct 09, 2013 10:50 am ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
There is a 2.5mm difference in Bore between them.
Author:  Moulin13 [ Wed Oct 09, 2013 1:37 pm ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
How about same question but in a 4g67?
Author:  Flying Eagle [ Wed Oct 09, 2013 8:57 pm ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
There are some engine math guys here. They can answer that. Most of the 4G6X blocks minus deck height differences, I believe have the same starting material thickness in the bores. It is only the boring machines that take them to a proper hole size for a 1.6, 1.8 or 2.0L piston diameter.
Author:  Flying Eagle [ Wed Oct 09, 2013 8:59 pm ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
Of all the piston choices I listed, including custom pistons with a higher compression (which could be made lower by the company if requested), why not use 4g61t pistons in your motor???

Short answer to putting 2.0L pistons in your 4G61t, I would not attempt it. You should be talking to us and a machinist (machine shop for engines) about safe bore dimensions for your motor.
Author:  Flying Eagle [ Sat Oct 12, 2013 4:46 pm ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
4g61 NA but low boost. 5-7 lbs suggested by some.

4g61NA and delete the turbo. :lol:
Author:  Flying Eagle [ Sun Oct 20, 2013 8:35 pm ]
Post subject:  Re: Can I put 4g63T pistons in 4g61t Engine
You would have to ask a machine shop for the dimensions on both pistons, diamater - clearance to cut to is different for each type of piston (hyper-eutectic, cast, forged, etc), wrist pin height - using 4g63/4g61 rods or if 4g93t rods can be used. I do know that 4g93t rods are weaker. There are 4g93t motors that were stock in our cars, very rare european models mainly. Leftover parts bin.
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