How to Calculate Stroke & Rod Length
Posted by ARC Racing on 18th Nov 2024
Measuring StrokeStroke is measured from the center line of the crank bearing journal to the center line of the rod journal multiplied by 2.Measuring Deck HeightDeck height is measured from the center line of the crankshaft bore to the deck of the block.Measuring Compression Height Compression height is measured from the center line of the wrist pin bore to the top of the piston.Calculating Cubic Inch Displacement (cid)
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PVL ignition system
Posted by ARC Racing on 18th Nov 2024
Been getting quite a few calls and messages about the PVL ignition system on where it actually fires at for checking timing. As you see in the pictures below the PVL ignition coil has four legs which I have numbered, and a PVL ignition flywheel has two magnets side-by-side. Coil actually fires when the trailing edge of the second magnet is in line with the right hand edge of the second coil leg as the engine rotates. This is the mark you wou
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Harbor Freight Predator 224cc Hemi
Posted by ARC Racing on 18th Nov 2024
Here is an update on the new Predator 224 Hemi engine…Bore X Stroke 2.93" (74.5MM) X 2.03" (51.5MM)We finally got an engine and have gone through what we need to in order to make a decision on building billet parts for it. First off there is already one of our Billet flywheels that fit this engine, part numbers 6626 and 6696 for the Hemi Predator engine. Outside of that we do not see a need for making a billet rod
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How to set valve lash
Posted by ARC Racing on 1st Aug 2024
Harbor Freight Ghost 212cc
Posted by ARC Racing on 25th Aug 2022
I know there are a bunch of YouTube and Forum videos/write ups on the Predator 212cc Ghost engine, but none by me yet lol. We’ve had this engine on the dyno and done some tuning as well as a few part swaps. I’m not going to get into the topics the others used or the power it did/didnt make, however what I will get into is using one of our billet flywheels on this engine. As most of you know the Ghost is a Ducar style 212cc engine with a Chinese c
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