The B36 is, in effect, 2 B18's joined at a common crank. As the B18 is a development of the earlier B16 OHV Redblock it is safe to say that the B36 is an all Volvo engine and had nothing to do with any other company's engines.

There is also the 4300 cc V10 which volvo built in the mid 1990's for a forthcoming S100 saloon car it was basicly two 850 engines in a V formation about 350 bhp which wasnt that powerful for such an engine , should have been another 150 bhp at least , even though cosworth engineering helped with the development , there are a LOT of pulley wheels on the front!

Hi folks just thought it was worth a mention?Always good to see the information put here. A very valuable source for anyone looking for answers.
Thanks Brian.

So the B20 was introduced into the 140 in 69 so my 144s 1969 was one of the first. engine no. 26157. i know that there were many evolutions of this engine but I would like to know when they changed from 4psi water pressure to 10 psi and if possible why.

Yes, the KH... With the Heron head making near to hemispherical combustion chambers. A rather successful construction and a sort after head here in Germany.

What is missing in the list:

B234G | 2316 ccm | Bosch LH Jetronic | 114 KW @ 95 rps (117 KW with M46 @ 97 rps) | 155 ps @ 5700 rpm (159 ps @ 5800 rpm) | 203 nm @ 75 rps (210 nm @ 74 rps)

B200ET | 1986 ccm | Motronic | 118 KW @ 92 rps | 160 ps @ 5500 rpm | 245 nm @ 58 rps

B230GT | 2316 ccm | Bosch LH Jetronic | 125 KW @ 80 rps | 170 ps @ 4800 rpm | 265 nm @ 57 rps

B230FD | 2316 ccm | Bosch LH Jetronic | 85 KW @ 91 rps | 116 ps @ 5400 rpm | 182 nm @ 43 rps

B230FB | 2316 ccm | Bosch LH Jetronic | 96 KW @ 92 rps | 130 (131) ps @ 5500 rpm | 185 nm @ 40 rps

We aren't allowed to forget two prototypes done by Volvo for the 780 series:

B250FT - a B230FT with a Penta crank making it to a 2.5l. This was supposed to have had something like 220 ps and 300 nm back in it's day.

B280FT2 - a B280F with twin turbos. It was dumped as Volvo couldn't get the V6 running smooth enough for their customers and it was like a bag of poop.

Another engine I have been told by Volvo engineers here in Germany which was supposed to be developed:

B6304T - sounds like nothing special. A 3.0l I6, but with a turbo. Before the T6 was developed, Volvo worked together with "Hausser" (a German Volvo tuning company of the 80ies and early 90ies) to get the 3.0T running. It had too much torque for ALL boxes they used then (the M46 couldn't handle it, nor could the AW30-43LE) and they had issues getting the turbo fitted in the right position. The manifolds (exhaust) were altered and changed to one, the turbocharger was placed above the battery (as there is more space there than next to the engine).

This created more and more problems so Volvo and Hausser both dropped developement. Especially since the 3.0l was capable of more power (the Swedish company "Haas" with it's owner Günter Haas, made a limited edition 964 called the "GS964" with a modified B6304S/F (new cams, new exhaust, new manifolds) and this is supposed to produce 280 hp. A friend owns one of the 5 cars built. Everything is custom!).

I'm not disbelieving you here, but I've never seen an engine marked B230KH, and the only B230K I've worked on (In a 1986 245 GLE ) has been fitted with the Heron head. I don't think the B230Ks in the 700 series had the heron head, though.

Has the V10 been mentioned? Developed with 2 850 engine components in the early 1990's with Cosworth engineering for the forthcoming S100 luxury saloon ... which never forthcame .

As far as I know ALL Uk 740's with carb engines had the Heron Head variant. 240's did get the 'normal' B230K, but it was a rare beast.

The easiest way to tell a B230K from a B230KH (given the blocks are not stamped K or KH) is to look at the head - if the last 3 digits are 530 it's a K, if they're 630 it's a KH.

My 740 has the original B230K engine (not heron) and Prufrock has a couple of these cars too. There's still quite a few of them about. These were available until the carb'd 740 was given the heron engine at the end of 1986. DWM and others on here have a 740 with the heron engine, as I did too until last year. And yes, the 'H' in B230KH is sometimes used to make a distinction between the early and late forms of the engine.

I thought I should add, there was also a 2 litre carb'd engine used in the 740 but not available in the UK. Only LHD. It was the B200K and used the Solex-Cisac with a manual choke, just like the 240s.

Are you still considering updating that list? I could list data for various B2xx series redblocks that are missing...if there is interest on your part for updating that page.