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8v vs 16v piston valve relief question
Topic Started: Dec 3 2016, 01:40 PM (265 Views)
suzukitom
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Tom

Quick question for g13ba and g13bb engine experts:

Can you swap a G13BB 16v SOHC head onto a G13BA 8V SOHC short block? The valve relief into the tops of the pistons is obviously different. . Just wanted to know if this is a critical difference on a stock motor.

Thanks!
Edited by suzukitom, Dec 3 2016, 01:40 PM.
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MarkZ28


I bet it wouldnt be a non interference engine if the belt broke at the least.
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suzukitom
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Tom

Thanks Mark. You're right.. the non interference feature must rely on matched pistons for each head configuration. I was curious whether a stock g13ba 8v short block would (with an intact timing belt) run normally with the 'wrong' sohc 16v head attached to it.
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Hotrodray1
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Over Educated parts guy

Yes it will run good but as you say if the belt brakes you are in trouble. I did this to a 98 4dr about 3 years ago and it ran great! At the time that 8 valve short block was all the owner could find. His his 16 valve short block was not repairable big hole in side of block.
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MarkZ28


Would compression be changed much?
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Hotrodray1
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Over Educated parts guy

I checked it was 180 psi per cylinder after I did it.
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