Blah Blah .
The Evan Green/John Bryson P76 in action during the 1974 World Cup Rally, as featured in Evan Green’s World of Motor Sport. Although rivals and spectators...
club.shannons.com.au
Some Swine tried to get me washed out to sea , once . Been Raining av few weeks . Hit the Ford at 60 , in the top of second .
Just as well a boulder was being washed down the steam . As the rear axle hit the ends , sinking , A tap on the turps had it flung fwd .
Ditto the rise . Far side the nose climbed the bank - so it launched as the rear went down . Rather than being washed away .
Esentially the injuns a B.O.P. , Rover - ( The Bolt ons bolt on ) but square . 3 1/2 x 3 1/2 or something .
Dual pipes , springs & bars , aND OTHER THINGS . Figur its worth 1/2 a dozen porshes or so .Mercedes sink . being twice the weight .
Was a U Tube of a green one , in a lake , with a outboard on the back . Bit Light . torsion 'll rattle the catches , like a Bently turbo .
Might have problems shutting the bonnet . but otherwise its a ' Bolt in ' .
https://primotipo.com/tag/repco-brabham-engines/
Initial Brabhams were the Olds Mobile Block . The P - 38's an offshoot . ( The 3.9 is actually a P - 38 ! )
opps
"Here is a 700 series Repco Brabham engine block. It was designed by Norman Wilson and superseded the 600 type, the origin of which was the F85 Oldsmobile block (heavily modified). It was cast in Australia at CAC. (Commonwealth Aircraft Corporation).
Using the F85 blocks for our first few engines was a great idea and saved many months of precious time cranking up to get engines running. I believe it was Jack Brabham’s contacts at General Motors in the USA that enabled us to buy about 20. Phil Irving designed all of the changes needed to use these and of course all of the other parts to complete the engine.
This included the placing of an aluminium sheet over the exposed cam follower bores and the opening above the camshaft and this was held in and sealed with half a kilo of Araldite. The guy who did this was our engine laboratory supervising engineer, Brian McCarthy, “Mac” was his nickname but it became “Araldite” thereafter!
There are still numerous 600 series blocks in use to this day and working perfectly.
But the locally made 700 blocks were much better. You can see the provision for cross bolting to the 5 main bearing housings along the base. This eliminated the need for the aluminium stiffener plate sandwiched between the block and the sump. This tied the the main bearing lower halves and made the whole unit very rigid.
With the 700 block all of this was unnecessary.
And wet sleeves overcame bore distortion problems encountered with the dry sleeves in the 600’s. The stepped main bearing bolts protrude into the valley and are tensioned after the mains are tensioned. Finally there are Cooper rings seated into the tops of the wet sleeves and no head gaskets to leak.
Overall the local block was a great improvement, stronger and lighter. And for the later 800 series these were an inch shorter, hence ideal for the ongoing 2.5 and 3 litre engines.
Reverting to the situation during rhe first year, it might have been tempting to continue to use the F85 blocks but it was understood that GM had ceased manufacture of that engine so in any case no more could be purchased. Anyway if they hadn’t planned to discontinue the F85 they probably wouldn’t have sold us any! "
Lookit 8:30 for the period Jim Smith P - 6 rover o.h.c. repco . P76 chassis widths near SDI , So is related there . too .