Author Topic: Convertible hood  (Read 6952 times)

David S

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Re: Convertible hood
« Reply #30 on: August 10, 2020, 13:43:30 »
Hi Max, was trying to build the car back to its original HP output of 340 at the crank. When we went to re- tune the car I was advised thar as our cars have the low cost cranks with the 50oz weight on end that the engines will rev to 5100 after which the cranks get of sync and break ( confirmed with Peter Knight). Therefore if I want to take the car above the 5100 and retune we will need to replace the crank with the old version that uses 25oz weight, I would assume that just replacing the Crank is only part of the work and hopefully some one on the forum will be able to advise what work needs to be done.
Of course could go Real steel and buy one of there 302 engines or alternatively I could get a 351 engine from another source - but I think these engines are taller and heavier but lower cost than the other 2 options.
So if someone could enlighten me on the crank replacement would be appreciated

David

Flyinghorse

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Re: Convertible hood
« Reply #31 on: August 11, 2020, 09:54:04 »
David ,
I have sent you an email on engine mods, however on the Mk IV / CRS  Section people did do some air filter & spark plug mods to overcome some low output issues.
There’s no easy ,low cost solution due to what was installed and the UK mot regulations on emmissions.

I’m not sure what engines were installed in the Brooklands Aces or gearbox configuration but am surprised you have the 50oz external weight.
Graham