manx 7 port

[swifty]

has anyone got any pics of the manx racing 7 port head at all . The one where the carbs are in the rear as original ,not at front . Also i think a member had one of these heads for sale complete with twin 45s . Does anyone know if it was sold . Couldnt find the original post. thanks

[dhenry]

Hello Swifty,

Yes I was selling the head. I've still got it. Email me for details. Cheers,

daniel(a)cckhistoric.com

[swifty]

IMG_1930.jpeg

Collected the manx 7 port head and 45s today . Looks a nice peice of kit . it will be sitting on a 1460 bottom end , paul ivy crank , arrow rods , kad flywheel , paddle clutch . kad 5 speed dogbox , lsd . omega pistons , 3 into 1 maniflow rc40 . Havnt made me mind up on cam choice but will probably go for the good old 649 . Has anyone got any experiance of these heads . Will be interesting to see what power it produces. To be honest im not going for all out power , more a strong torquey engine . Any thought on cam choice ?

[ivor badger]

how are the inlet tracts arranged. Is the std siamized inlet port internally split with a wall as per Colin Chapman's 750MC Lotus or something else?

[swifty]

yes they are internally split in the inlet manifolds witch in turn slots into the head.

[Pete]

What kind of bulkhead mods are required to get that lot in ?

[swifty]

Not to sure pete , il cross that when i come to it . Its 10.5 inches from inlet to ram pipes

[Vegard]

With that spec, won't an RC40 be a little on the wee side?

[guru_1071]

What kind of bulkhead mods are required to get that lot in ?

the bulkhead will need a chop to get it in. manx did a version of this head that would fit with no mods, but it was more of a down draft thing and is fairly rare, i think that only a couple where made for mervyn johnson.