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The Terminator
Engine/Tuning
Question piston to wall clearance.
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<blockquote data-quote="Jimmysidecarr" data-source="post: 5500859" data-attributes="member: 11681"><p>What pistons are we using here???</p><p></p><p>Stockers?? If so the factory spec is quite tight for a 4032 forged piston.</p><p></p><p>If you look at what the different piston manufacturers recommend for their 4032 forgings you will find most run more clearance than Ford did with our Zolners.</p><p></p><p>But Ford had to pass emissions tests and also didn't want customer complaints about cold start piston knocking noises during the warranty period.</p><p></p><p>The horsepower level is going to play a role also. Unlike the Ford GT our blocks do NOT have piston crown oilers for cooling... we just have splash cooling and what little cooling the evaporating fuel does on the intake stroke.</p><p></p><p>The more power... the more heat... the more rapidly the pistons and rings will expand.</p><p></p><p>If you are running aftermarket forgings... run what they recommend for your power level and end usage type.</p><p></p><p>They know how much their pistons will expand.</p><p></p><p></p><p>...:thumbsup:</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 5500859, member: 11681"] What pistons are we using here??? Stockers?? If so the factory spec is quite tight for a 4032 forged piston. If you look at what the different piston manufacturers recommend for their 4032 forgings you will find most run more clearance than Ford did with our Zolners. But Ford had to pass emissions tests and also didn't want customer complaints about cold start piston knocking noises during the warranty period. The horsepower level is going to play a role also. Unlike the Ford GT our blocks do NOT have piston crown oilers for cooling... we just have splash cooling and what little cooling the evaporating fuel does on the intake stroke. The more power... the more heat... the more rapidly the pistons and rings will expand. If you are running aftermarket forgings... run what they recommend for your power level and end usage type. They know how much their pistons will expand. ...:thumbsup: [/QUOTE]
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Question piston to wall clearance.
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