I am trying to put in bigger piston. I have the motor apart and have confirmed that i rolled a bearing. Now I have looked for bigger pistons and an oversized .040 pistons doesnt seem like much of an increase. From what I have read the 2.3L is 89.3 mm and the 2.6 is 92.6mm. Can I just put standard 2.6L pistons on it?
My second question is can I put them on the 2.3L crank. If possible would it be worth it to use a 2.6L crank?
2.3L Rebuild Pistons and Crank Question
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oldestisuzuist
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Re: 2.3L Rebuild Pistons and Crank Question
NO to all you asked.
-.040"/1mm is the maximum overbore for the 2.3 block. Anything more & you risk boring into the water jackets.
The 2.6 is a larger version of the 2.3, internal parts don't interchange, external parts usually will. You can't use 2.6 pistons on a 2.3 crank(the block won't bore enough & the wrist pin's in the wrong place) nor can you use the 2.6 crank(different deck height for sure & I think different bearing journal size).
-.040"/1mm is the maximum overbore for the 2.3 block. Anything more & you risk boring into the water jackets.
The 2.6 is a larger version of the 2.3, internal parts don't interchange, external parts usually will. You can't use 2.6 pistons on a 2.3 crank(the block won't bore enough & the wrist pin's in the wrong place) nor can you use the 2.6 crank(different deck height for sure & I think different bearing journal size).
'78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, body ROUGH, bought new 12/4/78. A pre-P'up?
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch.
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch.
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korbin22
- Regular Member
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- Joined: Wed May 10, 2017 10:22 pm
- Location: Jacksonville Florida
- Isuzu vehicle(s): 1992 Isuzu Pickup 2.3L
Re: 2.3L Rebuild Pistons and Crank Question
oldestisuzuist wrote:NO to all you asked.
-.040"/1mm is the maximum overbore for the 2.3 block. Anything more & you risk boring into the water jackets.
The 2.6 is a larger version of the 2.3, internal parts don't interchange, external parts usually will. You can't use 2.6 pistons on a 2.3 crank(the block won't bore enough & the wrist pin's in the wrong place) nor can you use the 2.6 crank(different deck height for sure & I think different bearing journal size).
Alright thanks so much glad I asked! I wasn’t really sure, still figuring everything out