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Old 12-18-2008, 12:09 PM
rachet ralph's Avatar
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welding cylinder heads

i'm building a ht-4100 cadillac motor 1984, going to use ht-4500 cylinder sleeves and piston and rods, my question is has anyone welded up combustion chambers to increase compression ratio, as the compression ratio in the ht-4500 is 8.0, i have not cc the combustion chambers in the heads, but going to shape the chamber around intake&exhaust valve to help the flow but that will also increase size of combustion chamber, what i'm wondering is can the combustion chamber be welded to reduce the size the chamber and after the welding is done grid the weld to smoth the weld and cc the chamber to make the chamber the same cc size, as the pistons in the ht-4500 are flat tops with zero deck height, also using roller cam and lifters from the ht-4500, and throttle body from ht-4500 that is a larger bore, not trying to make this a high horse power engine just trying gain a little more horses and torgue, to haul this large car around as this is my everyday ride, and do alot highway crusing, so any info on the welding of heads would be greatful!

dare to be different!!!1

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Old 12-18-2008, 06:41 PM
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welding the combustion chamber is done all the time to increase compression and enhance air flow.

sam-missle
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Old 12-19-2008, 07:12 AM
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thanks sam! like said not trying build a monster motor just a more horses and torque, so keep on rodding man!!.
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