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Home > Help Needed / General Tech Chat > SC 5 port engine management kit

Carlzilla

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Quarry Bonk

7th Jul, 2011 at 11:47:20am

I know you can run these with forced induction, so i was thinking about it just.
Does anybody use one of these? I was planning on something around 180bhp for my build, would the kit cope with that?
Also, would you need a plenum? As i have a modified montego one this would be perfect if so, if not does the ic pipework run straight onto the throttle body?
Anyone with experience with these would be helpful, by the time ive bought a turbocarb and ignition mapping, i mayaswell get the sc kit and do away with the problems that can arise from using a carb. Cheers

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)

John

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Mongo

Barnsley, South Flatcapshire

7th Jul, 2011 at 11:56:48am

Best off asking SC I reckon.

If something is worth doing, it's worth doing half of.

wil_h

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Betwix Harrogate and York

7th Jul, 2011 at 12:15:13pm

No you don't need a plenum on this type of TB as the fuel is injected before it seperates to the two ports.

As above, speak to John at SC.

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



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Carlzilla

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Quarry Bonk

7th Jul, 2011 at 12:25:49pm




On 7th Jul, 2011 wil_h said:
No you don't need a plenum on this type of TB as the fuel is injected before it seperates to the two ports.

As above, speak to John at SC.


Isnt that exactly what a carb does anyway? Or is there something different to the way in which the fuel mixes? Im guessing the plenum only needs to be there for the float bowl pressurising in which case. Is it john k on here who owns sc, ill drop him a pm if he doesnt see this. Tar

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)

John

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Mongo

Barnsley, South Flatcapshire

7th Jul, 2011 at 12:37:44pm

Wil I thought that having an appropriately sized plenum was good for performance?

If something is worth doing, it's worth doing half of.

NickG

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Australia oi oi oi!

7th Jul, 2011 at 12:53:33pm

That's what she said :p


On 7th Jul, 2011 John said:
Wil I thought that having an appropriately sized plenum was good for performance?

wil_h

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Betwix Harrogate and York

7th Jul, 2011 at 01:09:08pm


You are correct the plenum is there on the carb purely to enable a differential in pressures for the carb to work.

The way I understand it (and I could well be wrong),is that the performance advantage a plenum offers is the creation of equal flow in multiple ports. A single TB into a split manifold, as the SC kit, would not gain any such benefit with a plenum.

On 7th Jul, 2011 Carlzilla said:


On 7th Jul, 2011 wil_h said:
No you don't need a plenum on this type of TB as the fuel is injected before it seperates to the two ports.

As above, speak to John at SC.


Isnt that exactly what a carb does anyway? Or is there something different to the way in which the fuel mixes? Im guessing the plenum only needs to be there for the float bowl pressurising in which case. Is it john k on here who owns sc, ill drop him a pm if he doesnt see this. Tar

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



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

7th Jul, 2011 at 02:14:01pm

When I was orering mine, I asked about the size of the injectors. John said they where good for up to 150ish BHP

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*

wil_h

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Betwix Harrogate and York

7th Jul, 2011 at 03:52:40pm

If they're what they look like, and knowing what is on my 7-port they are 440cc bosch ones.

I have 4 on the hillclimber though, so 300bhp!!

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



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Carlzilla

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Quarry Bonk

7th Jul, 2011 at 04:02:53pm

Unless its cost effective to install larger injectors, it might have to stay carbed as planned, as id like a little provision over 180bhp ballpark, incase i went for a bigger turbo/more boost or the engine produces more power than guesstimated. Its something i wont be purchasing immediately, so the kit may move on from the 150 limit as it stands

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)

Ozyris

78 Posts
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Advanced Member

Disneyland Near Paris

7th Jul, 2011 at 07:22:56pm

john as give to me the limit of 200bhp max for the stock injector on is kit but after for raise the capacity of the injector two option new injector or put more pression in the injector like an ethanol injection
with 60psi of pressure you injector give 440*1.33=585cc =)

jbelanger

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Montreal, Canada

7th Jul, 2011 at 07:41:12pm

On 7th Jul, 2011 Ozyris said:
john as give to me the limit of 200bhp max for the stock injector on is kit but after for raise the capacity of the injector two option new injector or put more pression in the injector like an ethanol injection
with 60psi of pressure you injector give 440*1.33=585cc =)

The increase in flow is not proportional to the ratio of the pressure but to the square root of the ratio. So going from 45 psi to 60 will give an increase of sqrt(1.33) = 1.155 for about 508cc/min.

And you have to make sure your fuel pump can deliver enough fuel at the pressure plus any boost you have.

Jean

http://www.jbperf.com/

Ozyris

78 Posts
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Advanced Member

Disneyland Near Paris

10th Jul, 2011 at 08:43:37am

Yep jean i have mak a mistake of calcul :'(
but you have lot of pump for making more than 60psi if they need
i have myself a SC Kit for turbo so i keep an eye on this topic =)

Wesley

4 Posts
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Junior Member

12th Jul, 2011 at 05:48:50pm




On 7th Jul, 2011 Ozyris said:
john as give to me the limit of 200bhp max for the stock injector on is kit but after for raise the capacity of the injector two option new injector or put more pression in the injector like an ethanol injection
with 60psi of pressure you injector give 440*1.33=585cc =)


If there's a 200bhp limit with the standard injectors from the SC Management kit then I will consider one for my eventual build as 200 is more than enough in a GTM *smiley*

Wesley

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12th Jul, 2011 at 05:51:06pm

It does seem a bit pricey though as you could probably replicate it for a lot less. ECU and software does look good quality though.
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