35 replies to this topic

[satvinder]

ok to start of with i know what a 7 port head is.
my questions are

who sells them?
any one got one and prefers what make?
can i use my standard exhause its a two pips and one pipe on the manifold with a 2-1 y piece?
do the webbers just bolt straight on or do i need a short inlet manifold?
who does the gaskets?
best place to get webbers and the throttle links and things?
do i need a new bonnet with that extra curve at the end to fit the webbers?
what filters to use?

last quesions could i have some pictures aswell as pics of the bonnets??


chears

satvinder

[GreenMini17]

ok to start of with i know what a 7 port head is.
my questions are

who sells them?
any one got one and prefers what make?
can i use my standard exhause its a two pips and one pipe on the manifold with a 2-1 y piece?
do the webbers just bolt straight on or do i need a short inlet manifold?
who does the gaskets?
best place to get webbers and the throttle links and things?
do i need a new bonnet with that extra curve at the end to fit the webbers?
what filters to use?

last quesions could i have some pictures aswell as pics of the bonnets??


chears

satvinder

I guess Mini Spares will make a 7 port head, but it will be expensive.

You should be able to use the 3 branch LCB manifold.

If your using Weber 40/45 dcoe's you will need a manifold, but for performance issues, you may want a long manifold.

Webcon are now the UK manufacturers of Weber products so they will be able to supply the carbs (or try Merlin Motorsport for the carbs and linkages)


As for the bonnet, I guess you would need a modified one as the carbs will be stuck out further (depends on the length of the manifold)

I would use the ITG megaflow filters (the ones with the red band) don't listen to people who say they catch fire, this is because people haven't got their carbs set up correctly and the carb blows back and it catches alight. (you can get these from Merlin Motorsport too)

ABS Motorsport will be able to do a bonnet for your application.

[pikey7]

talk to MED, or Specialist components.

[satvinder]

was thinkin about med but i know there very expensive and for specilist dam there alot! lol.
as for manifolds if there slightly longer do i get good performance compaired to a short manifold??
as for bonnet could i cut it and have the filters sticking out?? would that be legal??

[satvinder]

and can i run a webber with no manifold?

[GreenMini17]

and can i run a webber with no manifold?

I would not attempt building this engine unless you have experience in engine building, I would not build one of these engines myself, MED are expensive for a reason, they know what they are doing!

Try Slark Race Engineering in Salisbury, Wiltshire too. They will be able to cater for your needs.

As for the bonnet, I'm not sure how 'legal' a cut and shut bonnet would be, it will look much nicer with a fibreglass single skin one which will do the job properly.

[satvinder]

dont like fibreglass id prefer a metal bonet.

as for engines

ive got a 1293 miglia lump, oap centre strap omega pistons with valve cut outs, lightned pollished ballanced con, crank and cam. dirty hight lift cam.
gear box sc box with x dif pin, sc drop gears,
clutch
ultra light flywheel, orange diaphram fast road rally clutch plate.
and i was just gonna put a nice big valve ported pollished double valve springs head on it with a swan neck manifold and weber 40 reinjected for it to match the eninge.
but afta mitp im comming around to a crossflow head

Edited by satvinder, 17 August 2010 - 03:46 PM.

[miniadventure]

A seven port head is a good idea. It gets more air in and more fuel can be added to give you more power.

1. minisport do one but heard it cracks easily, best bet it for med or speacialist compounts
2.yes you can still use your exhaust manifold
3.it depends on which head you get the mini sport head comes with manifold already on the head. Maybe a good idea if you go fuel injection
4. The good thing about a seven port head it all fits on with out much modifaction. very simular to putting a 5 port head on. you retain the cam and standard exhaust manifold so brings the cost down compared to an 8 port build

[liirge]

Anyone ran one of these with a quad SU setup? that would be interesting!

[mini93]

i think its completly daft if you go through paying out for a 7 port head which arent cheap to then just put carbs on them, split webbers n like arent cheap 1st off so why not spend a touch more money on injection, its like throwing away power if you dont! you dont have to go for expensive jenvys either, make your own plenum and use a single throttle body can work much cheaper!

[liirge]

i think its completly daft if you go through paying out for a 7 port head which arent cheap to then just put carbs on them, split webbers n like arent cheap 1st off so why not spend a touch more money on injection, its like throwing away power if you dont! you dont have to go for expensive jenvys either, make your own plenum and use a single throttle body can work much cheaper!

Ok..hold this thought!
Now I don't pretend to know a lot about this field with the seven and eight porters, but is injection actually the best way? could you tell me why? In terms of performance...I'm guessing they have incredible atomization and that's the reason...

[mini93]

last post wasnt aimed at you i might add, tad late

couldnt explain it fully, but its more than the attomisasion you get the exact fuel at points you need depending on engine conditions, sure carbs are adiquate for most minis but im assuming if your going as far as 7/8 port your not wanting just normal build and after power, you will be able to make more power in different points, also heard you can run wilder cams without sacraficing drivability as it should run smoother

[satvinder]

id rather stay webber as my injection fuel lines and dash pots and that stuff i have just riped out. didnt need it and would rather stay carb sounds much better.
been reading the specilist components head already build and just bolt straight on and there site says can fit under a standard round nose bonnet. may have to check again as i think that was the injection type?
any one got any pictures??

[mini93]

i would imagin you would need a fuel in and a return anyway from your fuel pressure regulator anyway, assuming you already have an injection tank from what you say?
the sound, its only a better sound depending what you like but i think you would be supprised about it all if you had a set of ITB's running up front.

but hey, its upto you, if you make up your own manifold for the webbers im sure you could fit it in the front without cutting, problem being you of course would want ram pipes/bellmouths on the webbers and they of course stick further out, and then you have filters aswell so its a bit of a push

[satvinder]

yer had all the return hoses and things but they cam off and fuel tanks come out. whats the legality about haveing the filters and ram pipes sticking out the bonnet??