
BRM Engines
#1
Posted 16 March 2002 - 00:09
Question: Did they design or test any other configurations? Like an interim 1.5 Litre L4?? 2.5 litre 6?? Anything?? And if so, what happened to them??
I suppose this need not be limited to F1 engines, either.
Go to it, friends!!
Bobbo
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#2
Posted 16 March 2002 - 00:53
#3
Posted 16 March 2002 - 00:59
DCN
#4
Posted 16 March 2002 - 01:01

#5
Posted 16 March 2002 - 01:02
So I finally sucked you into this thread!!

Bless you!!
Bobbo
#6
Posted 16 March 2002 - 05:41
Originally posted by Doug Nye
.....infelicitously chosen bore/stroke dimensions. Known as the P80 unit.
Was it not the bore/stroke of the first BRM Tasman engines (ignoring the big fours, of course...), so being a bank of a Stewart/Hill 1966 Tasman engine? I realise this was merely a stretch of the 1.5, but I'm questioning the bore and stroke situation...
And was this corrected in the 1967 Tasman cars, which went out to 2071cc or something in that area?
Compared to the SCA, it was a little gem of an engine, deserving better than it got. Of course, all of them met their match with the Hondas.
One of the Coopers was brought out here by Alan Cruikshank about twenty years ago... it was on display only at Phillip Island, however, and I happened to take a pic...
I believe the drain plugs are removed in the event one wants to fire it... this car does race in Historic events.
#7
Posted 16 March 2002 - 10:23
DCN
#8
Posted 16 March 2002 - 10:37
A genuine 2-litre was used by Matra in its M 630-BRM (73,3 x 59,18, 1998 cc), this engine seems to be used in the Nomad-BMR Mk2 and Mk3 as well.
Finally, BRM tuned the Lotus-Ford twin cam engine, as used in some Group 2 and group 5 cortina's and the Lotus 26R GT car.
#9
Posted 16 March 2002 - 10:52
I guess that wasn't necessary for packaging as it was in the F1 car...
Wasn't the Felday a V8 too?
#10
Posted 16 March 2002 - 11:26
#11
Posted 16 March 2002 - 13:08
Bobbo
#12
Posted 16 March 2002 - 13:30
#13
Posted 16 March 2002 - 14:33
"It took me a very long while to understand the reason for the power differences from the various so-called 2 litres. The best 1930cc gave 262 hp which is 136.6 hp/litre, the 1998s gave 129 hp per litre, with 258 hp, yet the 2070s gave 287 hp which is 139 hp per litre. Alex Osborn's 997cc F2 engine gave 129 hp per litre...I began to suspect the the ratio of connecting rod length to the stroke was more important than we thought. We cut 0.5 inch from the block of Frank Strake's F2 engine and fitted it with the shorter connecting rods from the F1 engines. fitted with the standard head the power went from 128 hp to 136 hp, which explained the dissapointing performance of the F2 engine and the 1998cc V8s. THe 2070cc engines had a longer stroke, hence the 139 hp per litre."
#14
Posted 16 March 2002 - 22:46
Originally posted by Doug Nye
Umm - lovely little engine, nowhere as successful either commercially or in competition against the Cosworth SCA - and then the Honda - as BRM would have hoped. And I'm really sorry but please wait for Volume 2 to read about it in further detail...
DCN
Back last summer (here anyway!) we had a stimulating little discussion about what a BRM P80 actually was, prompted by a quiz compiled by Bernd. If it's not going to pre-empt Vol 2 too much, Doug, perhaps you could shed a little light and correct any mistakes in what was discussed - I've just re-read it and we never really reached a conclusion. It boiled down to me saying one thing and Don saying another ....
http://www.atlasf1.c...0&highlight=P80
#15
Posted 17 March 2002 - 15:23
P75 was the overall H16 engine programme - P80 was the overall 1-litre F2 engine programme -
P for 'Project' numbers varied, changing from original British Motor Racing Research Trust days to Owen Racing Organisation times. P numbers under ORO largely satisfied the accounts department, who then knew what to charge against what undertaking...
Deep breath -
P10 was anything to do with the original toolroom when established a Bourne.
P11 anything to do with the drawing offices
P12 Stores
P13 Inspection
P14 Transport general
P15 - wait for it.... Transport racing! (I await your letters)
P16 commercial
P17 development - and so on and on and on.
Oddballs include P24 "750cc supercharged engine" - the brief consideration of adopting such an option for the 1954-57 Formula 1, a V8 based on the V16.
P28 was the Ford Zephyr engine conversion Mark I and P29 ditto Mark II - the famous 'Raymond Mays head' etc.
P38 was Shorrocks Burner
P52 was the project allocated to the 1959 Cooper-BRM.
P60 was the overal 2-litre V8 programme
P63 the Rover turbine engine frame
P66 Ford Anglia, Classic and Cortina conversion
P69 - aah, now that's interesting....the Indy car....
P84 - Ford Lotus-Cortina engine
P93 - 2-litre V6 engine (Lotus)
P95 4-valve development
P96 - 4.2-litre engine (guess where for)
P100 - 2-litre Matra engine
P112 - Chrysler Barracuda engine - anybody know about that one?
P125 - Lotus-Cortina engine for the Mike Spence Elan
P140 - Gurney Eagle engine tests (ask Justin???)
P149 - Chaparral Chevrolet engine
P159 - Snow-mobile
P169 - Super Vee VW engine
P173 - Formula Ford 1971
P175 - hold your beath ......flat-12 engine.
P184 - 1972 Car Formula 1 Flat 12
P215 - BRM sidecar project
P502 - Pedal car general
P504 - golf trolley
P516 - BRM clothing
P521 - Anti-Theft nut (I don't know what his name might have been...)
P530 - Mobile Operating Theatres (Commercial).
Is this sufficient to be going on with?
DCN
#16
Posted 17 March 2002 - 15:41
We are desperate to read about the ultimate high of the one and only World Championship, the controversy surrounding the conclusion to 1964, the conflict (if there were one) between Surtees and Rudd and - with a tear in the eye - the sad, slow decline.
But, more importantly, there is a matter which transcends mere Formula 1 immortals. I am sure EVERYONE wants to hear about the BRM golf trolley...
(Surely the P15 was the Mays F1 car?

#17
Posted 17 March 2002 - 18:48
Originally posted by ensign14
But, more importantly, there is a matter which transcends mere Formula 1 immortals. I am sure EVERYONE wants to hear about the BRM golf trolley...
The rear axle broke on the first tee.
#18
Posted 17 January 2005 - 01:08

Paul Sheldon gives three digit numbers for the P25 engine though (256, 257, 258 and 259).
Can't be a "running number" for the engines as two drivers were using the same one in the race.
Any enlightenment on that one?

#19
Posted 17 January 2005 - 01:59
When, and for what, was the P100 (Matra 2.0 litre) developed? Was it a V8?
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#20
Posted 17 January 2005 - 17:27
256 is the P25 engine from 1956, 257 the one from 1957, and so on... pretty logical.Originally posted by Mattthecat
So far so logical![]()
Paul Sheldon gives three digit numbers for the P25 engine though (256, 257, 258 and 259).
Can't be a "running number" for the engines as two drivers were using the same one in the race.
Any enlightenment on that one?![]()
If it is correct is another matter - Doug Nye in The Book(s) calls them just P25. However, the individual blocks are called e.g. 252 (1955), 2561 (1956), 2574 (1957), 2582 (1958) and 2591 (1959-1961). Either no new blocks were made in 1960 and 1961, or they realized the folly of having logic in identities... Anyway, I think that's were Sheldon got his engine nomenclature from.
#21
Posted 17 January 2005 - 23:39
Thx
#22
Posted 18 January 2005 - 09:30
But, more importantly, there is a matter which transcends mere Formula 1 immortals. I am sure EVERYONE wants to hear about the BRM golf trolley...
It had 16 wheels.........................
Presumably the Matra 2-litre V8 differed from the Tasman engine in some way due to being meant to run for 24 hours?
Paul M
#23
Posted 18 January 2005 - 11:33
Originally posted by Macca
It had 16 wheels.........................
Presumably the Matra 2-litre V8 differed from the Tasman engine in some way due to being meant to run for 24 hours?
Paul M
That's what I was wondering about (no, not the sixteen wheeler ;) ) - whether the Matra 2.0 litre was ust the project number for the brm V8 used in Matra's sportscar program or whether it was a specific and seperate Matra 2.0 litre motor.