Volvo B21 Pistons, Forum "Technical Topics" PV, 120 (Amazon), 1800 General Welcome to the Volvo Community forums of the Volvo Owners Club. Perhaps I have just had bad luck with finding good used pistons. 1-liter engine, and the B23 . What parts from the B230F are compatible with the B21FT? I've compared the two factory parts catalogs from The Volvo B21 is a slanted straight-four engine first used in the Volvo 200 series, meant to replace the B20. The Volvo B21 was a slant straight-4 engine first used in the Volvo 200 series, meant to replace the B20. The beauty is that the pistons can also be used with the standard B20 configuration. 020" OD KRB16-020 Kit for 4 pistons Oversize 0. 544 210 Amazon 142 144 145 P1800S P1800E 1800ES: -1973Forged piston, suitable for 2100cc B20 engine with 6 hole crankshaft up to and including 1973. Genuine Piston-kit Part # 272046 (272015) - Piston Kit. To find the parts you need, visit an auto parts store and inquire about the Volvo 200 sedan starting from around 1977. For a couple decades this overbore kit helped countless Volvo nuts get more power out of their pushrod powered Volvo. Jul 31, 2017 · If that's a really early B21 you can slap the rotating assembly right in to your B20 block. The higher compression is less than ideal for a pump gas driven turbo 16v car. 020 " (79. There is an Elring gasket for that bore, but it's over $100. Volvo Redblock Engine Most Volvo redblocks are non-interference engines, which means that if the timing belt breaks the piston heads won't collide with the valves and cause internal damage. 508 mm. Genuine 2022 Volvo Part # 272044 (272013) - Piston Kit. Several years ago though the supply of the specially designed head gasket and pistons fully dried up. PISTONS A = Height of piston B = Height of piston from centre of piston pin to top of piston C = The piston diameter must be measured at right angles to the piston pin hole, and at a distance C from the bottom of the piston. In all honesty I'd be wary buying a used engine just for the pistons unless I can look inside it. Dodge 4. The '79-80 B21F was unique in that it has three rings on each piston, 1 scraper, 2 sealing rings. 50 mm. Standard MARKED D I had a '79 242DL and it was 9. The Volvo B21 is a slanted straight-four engine first used in the Volvo 200 series, meant to replace the B20. These are stronger than the original "E" rods that were in the motor core. The B21 piston trick needs the 8 bolt crank and rods. S 0. The B21 and all derived engines are often referred to as red block engines for the red paint applied to the block. And maybe nobody is as dumb as me. B23 pistons are apparently much easier to find, and the blocks are externally identical, so assuming a B23 head gasket will work will a B21 head we think it will physically work. No snake oil, more choices. Encontrarás artículos nuevos o usados en Pistones, anillos, varillas y piezas para Volvo 244 en eBay. The stock 16v pistons have much thinner ring lands meaning if you are looking to build a turbo charged motor, they will be much less forgiving than a turbo piston. Crank Mechanism. I am currently leaning toward either the early B21F or the FT pistons. In that case 2100cc with a higher traction. Read more >> FWIW it's what I'd probably use for a daily. 040"-over for B21. That was with a more stock engine - B21 pistons, but a stock F head and a D cam, with 32mm chokes. Location: Fontana. I don't know much about engines and from what I've read the b230ft is the best engine, some b230s had some issues with piston slap, and the b21 is a smaller engine. Home / Volvo / Engines Volvo / Volvo B21 / Crankshaft B21 / Piston B21A 79-84 +0. The piston you're looking for is a B21A/F/FT piston (part 272044). Envío gratis en artículos seleccionados. The early B21 cranks have a removable seal sleeve and are identical to late B20 cranks. This engine was utilized in the classic Volvo 200 series sedans. comor give Frank de Vries or Peter Flapper a call: +31 (0)72 5753 202 En eBay encuentras fabulosas ofertas en Pistones, anillos, varillas y piezas para Volvo 244. There are a surprising array of engine options and platforms that can make for the perfect oddball This coming summer, I am planning on doing a pseudo rebuild on a b20 in prep for mild turbo use. Also available with 24mm Pistonpen and/or AMC 258ci, 290ci and 304ci pistons can be dropped in well within the boring capabilities of the B21, along with those from the 1952-55 Bentley R-Type Continental, and those from a 99-up Twin Cam 88 Harley-Davidson, just to name a few. New Volvo oil pump, modified for higher flow volume by Unitek&ST. We produce new spare parts that are no longer available at Volvo or other supplies. Can anyone tell me if B21 pistons are forged as standard? I read somewhere that they were. Home / Volvo / Engines Volvo / Volvo B21 / Crankshaft B21 / Piston B21A/E/F STD 75-84 97/98 octane Last visit was: Thu Feb 12, 2026 4:57 am It is currently Thu Feb 12, 2026 4:57 am Other than the stock b20 pistons and rods in a b20 block, what other pistons/rods are known to fit from other model engines? I understand the b21's pistons work, but with what bore size? Home / Volvo / Engines Volvo / Volvo B21 / Crankshaft B21 / Piston B21A +1 mm 97/98 oktan 1979-84 Piston rings Volvo B16 . Which one is stronger in stock form? From what I've read, the 6 bolt has larger rod bearings, but the 8 bolt will more easily accept B21 pistons and M rods (B21 right?). 1 liters with b20 pistons and a penta stroker crank. Let's ignore differences B21 have more displacement than B19 but thinner cylinder walls, but these even take ridiculous amounts of boost B23 is biggest bore and can still take like 2-3bar boost. Your chassis number is on the back of your registration certificate. Is this true? I thought all B21/B23's had M rods? I'm building a B21FT to swap into my 1985 245GLT AW71 using parts from a 1983 B21FT short block and a 1989 B230F long block. We are keen to keep classic Volvo on the road. The skirts may be scuffed to hell, it could have ringland issues, etc. Our guide covers its history, specs, reliability, and which models (B21, B230) you can use in your car. (Specializing in Volvo We love our Volvo's around here!)Our knowledgeable but small staff is here to assist you every step of the way, providing guidance and personalized recommendations to ensure you find the perfect part for your ride! Classic Volvo Restoration was founded in 2010 from a long life passion for classic Volvo cars. See the lower part of the piston, looks like it was starting to melt?? Found some aluminum shavings on top of the piston as well. The BEST B21 for +T'ing is the '79-80 motor which had forged crank Flat top pistons. My B20 is the later one with 8 bolt flywheel and 24mm pin diameter. Out of curiosity, I bought some 36mm chokes and tried them, and it didn't work well. PistonsPistons and piston rings for your Volvo Penta marine engine. Combustion chambers shown 1 thru 4 Time to pull the motor and replace. B21 We can't find products matching the selection. O. The primary differences when compared to the B20 was the switch to a SOHC in However, we have not been able to get pistons for the B21, and one option we were considering was to use a B23 bottom with the B21 head and externals. So my question is, should I stick to the b21 and build that up or should I look for another engine to build? The CR is determined by the depth of the dish in the pistons, or in the case of 10:1CR pistons, such as B23E pistons, a flat top. Fits 240, 260. I did build a few B20s like that, but the last one was in 2007 or so due to the lack of pistons. ¡Compra con confianza en eBay! I read recently that the pre 1980 connecting rods in B21's are weaker than the later ones. We are very pleased to reintroduce these signature kits! We worked Volvo Redblock Engine - Free download as PDF File (. Most of these have heavy duty forged conrods that can take like 400-600hp. What if you bored it out further and sleeved it? Anybody done it? Probably cost more than just getting a b20 block I Hey Guys, Does anyone know what the difference between normal B21(E) and B21ET pistons is? I'm trying to find some on eBay or on the regular websites, but I'm having a hard time finding them. I’ve searched a bunch. I would like to overbore my B20 block to take B21 pistons which will obviously give me grater capacity, but forged pistons would be useful to cope with my supercharger. B21FT pistons - probably close to 8:1 CR B21F (76-78) pistons - close to 9:1 CR B21F (79-) pistons - close to 10:1 CR Let's hear some opinions on the relative strengths & weaknesses of each choice, relating to my goals. The added complexity of the timing belt setup leaves a lot of opportunity for failures. 1 Liter Standard Piston & Rings set of (2). I hope that helps. A b18 might be able to get to 2. 3:1 and two rings on each piston. The primary differences when compared to the B20 was the switch to a SOHC in Mine are for B230 and are nearly 400 grams lighter per piston, and these particular versions would be a smilar or more weight saving in a B21. Tenemos la selección más grande y las mejores ofertas en Pistones, anillos, varillas y piezas para Volvo 244. Unless stated otherwise, all parts listed below are for Volvo B18/B20 engines. Hope that all makes sense. It includes basically everything I've been taught and learned throughout the process of building this engine. Ships from Volvo Parts Webstore, Oak Park IL. AMC 258ci, 290ci and 304ci pistons can be dropped in well within the boring capabilities of the B21, along with those from the 1952-55 Bentley R-Type Continental, and those from a 99-up Twin Cam 88 Harley-Davidson, just to name a few. pdf), Text File (. KL Racing has some very nice forged Wossner pistons with a modern ringpack for ~540 euro + shipping. I know that Mahle makes them, but the shop here that would hone my bottom-end says they are about Genuine Piston-kit Part # 272046 (272015) - Piston Kit. 7L pistons are much cheaper, are 93mm (2nd OS for a B21), run 24mm wrist pins, and weigh 6oz. I'm pretty sure th dish diameter is small enough on a b21 piston to fall completely within the quench pads so you don't pay a pentalty due to the dish (like you do with a b23ft/b230ft dish). 50mm 97/98 octane For years one of IPD's signature performance products was our famous "Big Bore" 2130 kit for B20 engines. Flat piston Standard dim 92mm bore 24mm pin Mahle complete with rings/locks Can also be used on B20 Rings 1,75 / 2 / 4mm. A piston of good quality, extremely suitable for engines with a lot of power. 1:1 compresion and thought this motor was 114 hp stock. Baffled oil pan supplied by OJ Rallye. 7 pistons (93mm). Very little off topic banter, tons of focused information Other than the stock b20 pistons and rods in a b20 block, what other pistons/rods are known to fit from other model engines? I understand the b21's pistons work, but with what bore size? The Volvo B21 is a slanted straight-four engine first used in the Volvo 200 series, meant to replace the B20. Consensus is the walls will be too thin. 3:1 compression ratio that the later B21F and the B21E got. Head Are you looking for high quality Volvo pistons? We offer an entire range of pistons for B18, B20 and B30 engines. Late rods and the B21 pistons are completely interchangeable as they both run 24mm wrist pins, and the main bearings have been the same for years with that one exception of the B230's. ( 4/12/19 ) go to top | how to order “decent used condition, untested, 92mm piston, 55mm bearing these came off a B21 volvo engine that came to us in parts. Unless I'm mistaken B230ET pistons simply have a shallower dish than B230FT pistons. 5:1 compression, you will want to get flat top pistons to get a 9. The '76 B21 will have dished pistons for 8. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. 87mm) 625 SEK per each I doubt you'd be able to find new B21 pistons, and you would need to use the F head from an '72-on injected B20 and also modify the connecting rods to take the larger wrist pins. Nordicar Marine: Replacement parts for Volvo PentaWe love to help you and give you advice!webshop@nordicar. And also in the car On the bottom plate for the right front seat Center against bulkhead under the hood Right in the engine compartment Near the windshield, on the dashboard In the right rear door pillar The B21 pistons are correct when used with the late-b20 and OHC rods for the b20 big-bore kit, when the block is bored out a bit. Home / Volvo / Engines Volvo / Volvo B21 / Crankshaft B21 / Piston B21A +0,50mm 97/98 oktan 1979-84 The b21 pistons aren't in stock at IPD or any other place I can find in the US as the moment. B21. 5l b20s were bored and stroked using b21 pistons and a crank that has a longer stroke. Today we are serving thousands of classic Volvos worldwide with quality Classic Volvo parts operating from 2 warehouses in Europe, Sweden, and North America. B200 block good cylinder walls but small displacement. Volvo 242 - 244 - 245 B21 Engine 2. Best place to get them? The AQ125A is equivalent to the older Volvo B21 engine, which has a displacement of 2. 5:1. I mention that because if you look at "turbo pistons", there is also the B21E/ET piston, which is a higher CR, 8. Lots of people asking if they can bore their b18 out for 92mm pistons. I’ve got a 6 bolt b20f. Learn about the legendary Volvo Redblock engine. See the engine section for our bottom end component kits and the Street Performance Tuning Kit which combine many of the parts into cost saving packages. The motor changed the last two years to 9. Yes it is the same conrod, both the B19 and the B21 conrods are Volvo part 1219237 (originally 463021). The Volvo 200 series featured the B20 engine, a 2. Are you looking for high quality Volvo pistons? We offer an entire range of pistons for B18, B20 and B30 engines. 0-liter block, the B21, which is the 2. 12-10-04 I just want you new readers to realize that this really is a GREAT thread to learn how to build a B21/23 the right way. see pictures for more detail” Read Lessabout the seller notes Dodge 4. Cast 92mm pistons with pins and rings - These are B21 flat top pistons also used in B20 big bore kits with 8 bolt cranks and rods - available in several overbores - $495 All piston prices above are subject to change - email for current prices based on size needed. The 2. Volvo "M" rods from 1980-1983 B21/23, supplied used by Lee Holman. Ships from Volvo Parts Webstore, Oak Park IL Many fans of Swedish metal are eager to turn others onto the potential for Volvo performance. 7:1 (I think) vs B21A 7. New Mahle pistons, . 1 liters. It's understood that a properly maintained redblock Volvo will still be running after 200k, 300k, and possibly even one million miles. txt) or read online for free. less PER PISTON, based upon stock B21F pistons (92mm) vs stock 4. wzc1, kwbgxx, oxqqv, a6ml, r63luf, fpssz, vm5u92, dylk, bv5it, n6caj,