SC 7 Port Billet Head - Update *NEW PICS*
Turbo Mini Forums

A few pics of the finished head and induction set up






JK

1st to provide running proof
of twinkie in a car and first to
run a 1/4 in one and the worlds
most prolific builder of K engines!!

nice

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Do you have or will you have a fuel rail setup for this? Also, have checked, or thought about checking, to see if some existing COPs will fit on the sparkplugs?

Jean

http://www.jbperf.com/

Paint it green and jobs a goodun

that does look nice. Interested to see some flow figures on this compared to a 5 port, cast 7 port and 16v head

Team www.sheepspeed.com Racing

Cant wait to see this on sunday and discuss with you, I hope it performs as good as it looks. Think I would want a clear bonnet though as well!

Cant wait to see this on sunday and discuss with you, I hope it performs as good as it looks. Think I would want a clear bonnet though as well!

so nice john, can you email me some prices please

87 mph to 116 mph in 4.34 sec
Best 1/4 mile 13.2 seconds

http://www.motorshots.co.uk

this is very nice
just need a price now......

think i may have to re-mortage....lol

Lovely John, really nice example of engineering, only one question how come you went with those anchor weight inlet valves surely reversion is not going to be an issue with this type of head setup,
also dose it work on standard rocker spacing,

cant wait to see flow figures it will be nice to have something to compare with
best regards,
Paul.

Edited by PaulH on 27th Jan, 2010.

Looks a bit amateur to me.









Looking forward to seeing this at Bingley!

1/4mile in 14.6sec 104 terminal with a shocking 3 sec 60ft and 3/4 throttle.

http://www.efiminis.olicentral.com/

On 13th Jan, 2009 AlexB said:


Last time I saw you, you were shouting 'I want to find someone to bugger' at the top of your voice, drink in hand. I don't think you're the one who can comment on things to do in public.. ha ha ha.

On 28th Jan, 2010 Fortecphil said:

Yeah you have to be careful with Flanges. One slip of the tool and you're right in the sh*t....

Dumb question as usual and pleas don't take the piss :

Different lenght of inlet tract is not only for clearance issues, right ?
How come ?
Does a bend on 1 and 4 end up making 'em 1 inch shorter or the like ?

(oh and by the way : that is a wet dreams head !)

Rusty by nature

Paul ,harsh ouch,lol

i have used rimflow valves in my own heads for 20 years now and i remember the first time i used them to replace a set of race type valves ,i could physically see / fel the engine come on cam 300 rpm sooner, and if correctly fitted at there correct height will see 9500rpm, enough for any three bearing 1275 lump,

carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

looks great john , couple of q ,

is that deck thick enough to take a high skim under the spark plugs

,and is the protrusion of the plugs into the chamber sufficient ?

617 kg ,old 32's ,open diff.13.28s @112.1mph .
88mph to 112mph in 4.39s.
http://www.youtube.com/user/legrandphromage

Just wondering how can I connect supercharger to that head...

1399cc, Eaton M45 supercharger, Finn turbo cooler, N2O system, compression ratio 9.13:1, boost pressure 0,8bar/11.6psi.

http://mikaj.1g.fi/kuvat/Jani/

never messed with ally heads before so just wondering, don't you have to skim them when they've been removed so they'l only have a short life with how often they get removed from our engines?

On 8th Aug, 2010 Brett said:
Carl worked my bottom

lol Carl definitely not meant to be harsh with out doubt johns work is super and this head is a typical example of that, I really don't want to take away from that, It just that talking with the designer of these valves only short time ago about my own efforts with my head Paul said that in later testing with the latest cam profiles from the states and later port technology he found there to be no difference in these valves compared with the standard Item. could it be passable that the heads you are fitting these to are very heavily ported heads with very large inlet tracts thus having relatively slow port velocities allowing easy reversion and with these type of valve combating this you seen good improvements.
ho and no doubt they will work at 9500 rpm but at what cost ??

feel free to shoot me down in flames As still very much a noob when it comes to head work but would slightly smaller valves not be better? atleast 1/8th of each valve is heavily shrouded, or does simply having a larger valve overcome this?

turbo 16v k-series 11.9@118.9

Denis O'Brien.

the valve sizing game is a trade off, between schrouding on the side next to the chamber wall and the extra curtain area it offers eleswhere coupled with port shape,
sim ple really,
i am more interested in it's cooling capabilities,


carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

-COP, I haven't looked at the options but think clearance to ITB linkage would be an issue

- fuel rail, yes there is a stainless custome fuel rail - just not in the pics!

- ITB lengths - two reasons, one was to avoid using a single piece ram pipe for two cylinders and secondly we wanted to play with increasing the torque spread on the motor with having different length inlet tracts

- flow figures - time permitting I'd have done this first and compared it to the K info we have.

- Matt - prices - need to sort this out on Friday! - finger in the air a good chunk less that the iron one!

- Valves - I'm keeping quiet! its a nice 36.5mm so thought we'd try it to see what it does on a 36mm dia port. They are all damn heavy when compared to a 5mm stem K!

- deck to plug, I'd be happy to see 40-50thou off the head before it bacame an issue

- plugs - the pics show the plugs dropped in by hand without the washers being compressed - very happy with protrusion-ooeer

- rockers - this head has gone together with the roller rockers as purchased from Iain a while back

- valve sizes - on a vertical valve operation head you'll always suffer chamber shrouding to a degree, I'm happy the chamber won't cause restrictions - but thats what the dyno test is for

JK

1st to provide running proof
of twinkie in a car and first to
run a 1/4 in one and the worlds
most prolific builder of K engines!!

sweet, like i say know not much about headwork (an area i really must invest some time in learning about) so curious to know why people like yourself who know what there talking about do the things you do!

turbo 16v k-series 11.9@118.9

Denis O'Brien.

pic down the inlet tract, 36mm throttle body without spindles.

1st to provide running proof
of twinkie in a car and first to
run a 1/4 in one and the worlds
most prolific builder of K engines!!