Whats involved in changing pistons in an LQ4
12-16-2011, 11:38 AM
#2
TECH Enthusiast
I'd think it's the same as changing the pistons on any engine?
You gota take the thing apart?
Put the engine on a stand, take off the oil pan, unbolt the crank and rods, and take the bottom end apart.
You gota take the thing apart?
Put the engine on a stand, take off the oil pan, unbolt the crank and rods, and take the bottom end apart.
12-19-2011, 12:11 PM
#5
Definitely have to balance, and it is very much recommended you do a hone to match the bore with the new pistons. You never know what shape your current liners are in and just throwing in some new pistons/rings is just asking for sealing trouble.
That's about it though.
That's about it though.
12-19-2011, 04:51 PM
#6
54,000 miles on it....earlier post said hole when I ment hone lol....Thanx for the responses, how much do you think a hone, piston install on the rods and a balance would cost? What piston is good for this....thought about a forged piston with valve reliefs, my cam I'm putting in is a EPS 226/234 .598/.601 lobe sep is 113. Reason I am thinking about it is I am putting 243 heads on it and want to mill them to get more compression....worried about piston to valve clearence
12-19-2011, 10:25 PM
#7
Why are you wanting to install forged pistons in an iron block for an N/A application? That would be a waste of money IMO.
Advanced Induction can port a set of 243's to match your camshaft / goals that will have plenty of compression with a stock LQ4 piston and plenty of PTV clearance.
I would not waste your money changing pistons unless you planned to go with a large power adder.
Advanced Induction can port a set of 243's to match your camshaft / goals that will have plenty of compression with a stock LQ4 piston and plenty of PTV clearance.
I would not waste your money changing pistons unless you planned to go with a large power adder.
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12-20-2011, 07:37 PM
#8
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Why are you wanting to install forged pistons in an iron block for an N/A application? That would be a waste of money IMO.
Advanced Induction can port a set of 243's to match your camshaft / goals that will have plenty of compression with a stock LQ4 piston and plenty of PTV clearance.
I would not waste your money changing pistons unless you planned to go with a large power adder.
Advanced Induction can port a set of 243's to match your camshaft / goals that will have plenty of compression with a stock LQ4 piston and plenty of PTV clearance.
I would not waste your money changing pistons unless you planned to go with a large power adder.
i have AI 243s on my LQ4 and im right at 10.8.1 with a stock mls .051 gaskets and heads milled to 60cc with no ptv problems with a 226/230 605/600 111lsa cam
