The Volvo B21 is a slanted straight-four engine first used in the Volvo 200 series, meant to replace the B20. The B21 and all derived engines are often referred to as red block engines for the red paint applied to the block.

Mar 17, 2005 · These are found in Volvo 240, Volvo 300 and Volvo 740 series cars. These are the so called weak redblocks. They have skinny con-rods, which are also known as 9mm rods. Not suitable for performance applications. The thrust bearing is also situated in the middle of the crankshaft. These too have a cast iron block and cast aluminum cylinder head.

May 14, 2023 · First appearing in the Volvo 200 Series in 1974, the Redblock has a red-painted engine block, hence the name. The most iconic iteration of the Redblock has 2.3 liters of displacement, a single...

Jul 31, 2017 · Redblocks are pretty "over square", meaning they have a shorter stroke to bore ratio. There are plenty of sub 2 liter 4 cylinders with more stroke than a redblock. Honda K24's had a 99mm stroke with a rod ratio of 1.58:1 and you see how people run those. Penta AQ151/171's have a 86mm stroke with 1.91:1 rod ratio and are 2.5 liters.

The 1983 Matchbox #MB48 Red Rider '57 Chevy Big Block Rod is a 1:64 scale diecast toy car designed for children and collectors alike. This Chevrolet car model features a red color, unopened box, and belongs to the Matchbox Superfast series.

Jul 11, 2020 · I've had a few hot rods with red wheels, cream wheels & I've also used assorted greens and one car with black wheels. Do you guy's think red is making a comeback or do you prefer another shade? HRP

Feb 12, 2008 · What are the best rods for the '87 B230F red block? This engine will be N.A. with side draft carbs. I belive I also need a M cam, or was it an A cam, I...

Apr 14, 2014 · Named for their fire-engine colored red and cast iron engines, Volvo first manufactured the single overhead cam (SOHC) redblocks for the 200 series, as the B21. The engines evolved over their two decade production life and were made in various configurations and displacements.

Aug 8, 2022 · Its Volvos B-motor. They are in Swedish called röd block, red block because of the colour on the engine. Range in name from B19-B23. Name indicates how large they are. Most common in 240 is b21, 2.1 litres.

Dec 7, 2018 · For the turbo brickers, as they like to call themselves, the B230FT is the alpha and omega of tuning. It is the Swedish equivalent of a small block V8. This 2.3-liter engine became so popular all over the world that people started doing the craziest swaps.