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manx 7 port
Posted: Tue Mar 27, 2012 12:45 am
by 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
Re: manx 7 port
Posted: Tue Mar 27, 2012 3:47 pm
by dhenry
Hello Swifty,
Yes I was selling the head. I've still got it. Email me for details. Cheers,
daniel(a)cckhistoric.com
Re: manx 7 port
Posted: Fri Apr 13, 2012 11:12 pm
by 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 ?
Re: manx 7 port
Posted: Sat Apr 14, 2012 1:29 am
by 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?
Re: manx 7 port
Posted: Sat Apr 14, 2012 10:17 pm
by swifty
yes they are internally split in the inlet manifolds witch in turn slots into the head.
Re: manx 7 port
Posted: Sat Apr 14, 2012 11:10 pm
by Pete
What kind of bulkhead mods are required to get that lot in ?
Re: manx 7 port
Posted: Sat Apr 14, 2012 11:21 pm
by swifty
Not to sure pete , il cross that when i come to it . Its 10.5 inches from inlet to ram pipes
Re: manx 7 port
Posted: Sun Apr 15, 2012 7:54 am
by Vegard
With that spec, won't an RC40 be a little on the wee side?
Re: manx 7 port
Posted: Mon Apr 16, 2012 1:49 pm
by guru_1071
Pete wrote: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.