Has any Formula 1 cars ever used OHV (pushrod) valvetrain engines?

[theriusDR3]

OHV and OHC valvetrain

Formula 1 usually using S/DOHC valvetrain engines traditionally since its' inception in 1950 but has any F1 cars ever used OHV valvetrains?

[Hoffman900]

Tommy did the homework for you:

the last pushrod engine in F1 ?
remember ERAs and Talbot-Lago won in 1948-1954 F1
remember 1952-3 WDC was for F2 so had Cooper-Bristols etc (developed BMW engine)
and there were many non-championship F1 races until c. 80s (eg 22 in 1962)

certainly in F1 in UK - Bob Gerard's rear engined Cooper-Bristol in 1957 WDC (and 1958 in non-WDC)
in F1 in Australia - Brabham's pioneer rear engine Cooper-Bristol Reg Smith then Max Stephens owned it
https://en.ascottcollection.com/coopert40-fr
NOTE 'Black Jack' Brabham so called after his early striking black beard and hair combo
the car won the Australian GP in 1956 and raced there in 59 - but this GP was always FLibre not F1
https://primotipo.com/tag/cooper-t40-bristol/

1961-65 1.5 litre saw a lot of F1 pushrodding (many races in SA - afaik for the national championship) ....
eg 1962 Rand GP (non-WC but many WC entries)
Brausch Niemann's 127 mph 1958 Lotus 7 (shortened to F1 rules) with 1.5 pushrod ohv Ford finished 10th (on the road)
famously slipstreaming Jim Clark's V8 Lotus
https://grassrootsmotorsports.com/forum ... 225/page1/
the engine was the UK 1340 cc '109E' Ford bored to 1475 (with 65mm stroke plausible against 1961-2 Climax F1 4cyl 72 mm)
like the 1100 FJunior Ford/Cosworth etc (a bored out '105E' 1000) - the blocks were identical ie 109E replacing 105E
BN then drove a Lotus 22 FJ 109E getting good places in non-WC F1 GPs Mozambique and Pietermaritzburg etc
and qualified for the WC SA GP at the end of 1963 (pushrod cars dnq'd the next SA GP - in Jan 1965)
others in 109E engined Lotus FJ cars in SA included Bernie Podmore and Dave Charlton
other FJs used 'twin-cam' (dohc) 'Lotus' Fords as did Hawkins & Prophet Brabham BT10s SA GP 1965
(some wrongly call these 109E - though a twin-cam is a 1.6 on a pushrod 116E block so 1.5 tc via a 109E block is conceivable)

1961 (UK/US invented) Intercontinental Formula allowed 3 litre ohc/dohc vs 5 litre pushrod - only IC 7 races held

2.5 (but not 4.5 litre) UK Daimler pushrod hemi V8s did hillclimbs but eg as 2.5+ never F1 used even as 1966 stopgap
similarly Armstrong-Siddeley had in later 50s pushrod hemi 4s and 6s (tried in a race sportscar)
Riley and Lea-Francis hemi 4s somewhat earlier

I’m involved in a few racing engine projects and regularly chat with a cam designer that has NASCAR, LeMans, NHRA, and many other wins / championships in many pro racing series. Other than just wanting to know, is there a reason you’re asking?

[saviour stivala]

The 1936 Auto Union type C V16 2-valve per cylinderhead designed by Dr.Ing. Ferdinand Porsche had all 32 valves operated by a single centrally mounted camshaft, actuating the inlet valves via figer followers and the exhaust valves with pushrods.

[Tommy Cookers]

also the Auto Union type D (1938/9 3 litre 60 deg V12) had some valves pushrod-operated
F1-illegal it would have been WDC-legal from 1950 at Indianapolis (then a round of the WDC) - if not German-entered ?
the 1938 French GP winning 4.5 litre NA V12 ohv Delahaye was F1-legal but didn't do postwar ?

and fwiw .....
the 1950 Australian GP (non WDC) was won by F1-legal side-valve Mercury power (Doug Whiteford)
he also won this GP in 52 and 53 in an F1 ohv Talbot-Lago
'rookie' Mike Hawthorn (Cooper-Bristol ohv F2) was 5th in the 1952 WDC (the WDC being F2 not F1 in 1952 & 1953)
Bob Gerard (rear-engined Cooper-Bristol ohv) was 6th in 1957 British GP - points went only down to 5th place
(the Goodwin Special (4.3 litre Alvis ohv engine) never raced in F1 - Lockhart's (in ohv exh sv) Rover special might have)
in the 1955 non-WDC Pau GP a (supercharged 750cc F1 ohv) DB-Panhard was a distant last