Cheap 7 Port?
Turbo Mini Forums

Just seen this on ebay, seems pretty cheap for a 7 port? Anyone had any experience?

http://www.ebay.co.uk/itm/Crossflow-7-Port...#ht_7826wt_1270

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

I have one. Not used it yet but it wasn't machined fully. To my standard it still requires a skim, port polish, the 11stud holes were only drilled 9/10 of the way and It. Weds a clean because theres chunks of ally inside it. Other than that it's good. Lol

i also have one and it needs a fair amount of work still on top of buying it

I have also have one from Webcon. They need a fair bit of work, and you should also budget for bigger stainless valves and suitable high quality springs.

Edited by alaskanow0 on 14th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

Edited by alaskanow0 on 14th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

by the time you get every thing done i think its more cost efective the get the SC one.

Class C 3rd Place Avon 2011 14.18 @101mph

i also agree

Plus they do a plenum for it now.

http://www.twinkam.co.uk/shop/article_SC22...6aid%3DSC228%26

Nice. I not stupidly expensive ??? or is it

rick

I am serious thinking of selling my Webcon head, At throttle bodies and Dta Ecu. Then buying the SC one with Tbs and plenum for my turbo. The plenum is a awesome bit of kit. But im not sure if I'd prefer a single throttle body for the turbo to make mapping slightly easier. Also unsure of where you would take a MAP single from with the ITB's.

Edited by alaskanow0 on 14th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

On closer inspection, i dont like it.

Mat im i right in thinking that you either have to buy the throttle bodies aswell or have to make one off runners to mate the plenum to the head then somhow try fit a single throttle body on the end.

It would be miles easyer to make a new one than mess about.
The big bonus with the sc head is the injectors in the head so the plenum just has to house the single throttle body.

rick

I agree, my preference woul be a single SC TB, but nice none the less.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

I think I would just get the head from SC and make runners and plenum in one like Wil as done if running a single TB. Maybe keep the DTA aswel. I also like the idea of idle control with a single body.

Edited by alaskanow0 on 14th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

ive been told that the ones of ebay are the pierce ones? and i did buy it from ebay. it was still a bargin at £900 (inc all taxes).

i will be swapping the springs from my other turbo head which were a kit with the phase 2 cam from AVR.

The work still needed in the head is as follows.

1. Skim £20
2. Chambers £?? (need polishing and smoothing out)
3. Port Polish £free if done by yourself
4. clean £free (if done yourself)
5. re-lap valves (to be on the safe side)
6. change valve springs
7. fully drill the 11 studs.

you dont have to buy the head with valves and springs and as such its cheaper. i did, because i am thinking of using them. i was told that people had used their heads with their valves and they assured me they are up to the job of using a turbo.

i would recommend getting one, as long as you consider the little list of jobs to do, which in all honesty isnt going to cost a lot providing you keep their valves and springs. or have a spare set to pop in?

As far as Im concerned, no head off the shelf would be good enough to use straight from the box. They can ALL be improved upon or will need need modifying to achieve the desired CR which means all the extra work needed to prepare this head would be needed with any head.
Having said that though, the SC head does have funky FI which bolts straight on eliminating a little bit of fucking around

Edited by paul wiginton on 15th Jul, 2012.

I seriously doubt it!

Edited by alaskanow0 on 15th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

right, ill have to gt hold of some valves then too. i still think its cheaper than the other ones though! and the guy on ebay is currently developing a TB kit?

It sounds like you get what you pay for...

Class C 3rd Place Avon 2011 14.18 @101mph

Sorry my one last point-

After dyno and road use with both Webbers 40'S and Fuel injection, I conclude this head is not really suitable for mild road or turbo use. At slow engine speed the cars lacks torque and only really comes on song from 3k. Same engine with 5 port shows better power until 3600rpm. The Injection makes a massive difference (can idle at 500rpm with 286), but still not a complete road package. But it sounds f**king brilliant.

I can't help but think the large ports and slow air speed, would not make good for a low CR turbo engine off boost.

This is why I have not continued with my 7 port turbo project and am considering the SC head instead. Don't get me wrong the pierce head as its place, but is more at home on the track or a wild road car.

Edited by alaskanow0 on 15th Jul, 2012.

Class C 3rd Place Avon 2011 14.18 @101mph

yep, I agree with that,

I managed to largly get aound it with the vnt by making boost at low speeds, not ideal though.

It looks cheap since it has no VAT ontop. Its like the AEM widebands that folk buy in from the US as they look nice and cheap, only for some to have to pay the tax and import duty. It doesn't look so attractive then.

Don't try and circumvent customs and excise, at the very lease expect to pay the expected charges, then when it lands on your door step without it, happy days.

As usual, but for something like this it looks like it's definitely worth spending the extra for something you know will work out the box.

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

as for all your negative discussion on this head. i shall be using it with injection and a rather small turbo. ill post up all my specs and power runs etc and we can compare it to the other 7 port turbos?

i paid a grand total of £900 for this head. built with valves.

itll need an extra £150 putting into it. and thats still only £1050.

the Sc one is £1,661.40

to be honest £610 is quite a bit more?