200 bhp from a sigma?

[sevenmad]

There seems to be lots of experience with tuning the K series and Duratec, but little seems to be written about tuning the sigma, and Caterham stop at 150 bhp.

 

However some of the Ford tuning specialists seem to be having a go. A friend with a racing Puma mentioned that Shawpeed offer up to 200 bhp from the 1.6 unit! here

 

Anybody know of any other tuners offering anything similar?

[Graham Perry]

Its surprised me that more tuners haven't gone for the Sigma /Zetec SE. Its such a compact little unit and some versions even have a steel crank as standard. I think Mountune used to do upgrades but not sure if they still do.

[Windy Corner]

Excerpt from a well known Tuner :-

 

"To get 200 horsepower out of a 1.6 Sigma you will be looking to rev the engine to nearly 8500 so steel rods and competition pistons will be required. Also running a standard oil pump will not be sufficient at this rpm, pump rotors may break and there maybe oil supply issues. Taking into consideration that your engine is in good condition it would require the following components to up-rate it;

 

· Dry sump kit

· Steel con-rods

· Lightweight flywheel and clutch assembly

· Competition pistons and rings

· Camshaft kit

· Hi-flow injectors

· ECU and loom modification

· Ported cylinder head with oversize valves

 

As well as the above it will require gasket set, consumables, labour and dyno testing. The price to carry out this work is £8000.00 + vat. In addition you may require a new exhaust and you will require a dry sump oil tank and associated hose work.

 

To supply you a 2.0 litre Duratec with flywheel, clutch, ECU, loom, fuel pressure regulator, low-line sump, starter motor and alternator, you would be looking at the following prices;

180 horse power £5499.99

205 horse power £6229.99

225 horse power £8025.00

You would need a new bell housing and new exhaust and possibly the hole in the side of the car modifying to suit the new exhaust"

 

 

Rik

 

Roadsport SV 1.6 Sigma 150

in Viper Blue here

[TobyCoulson]

I think the 150 Sigma is at the end of its sensible limits, Anything further will cost a fortune and be akin to the MAE 1 litre screamer of the old F3 days. Not worth the agro imgo.

 

A cigarette butt placed beneath a Band-Aid makes a cheap nicotine patch

[Golf Juliet Tango]

Talk to Rob Morley at Ratrace/Pro-tune http://www.pro-tune.com/

He has got considerably more out of the 1700 engine in a Puma (This was for John Louden of the WSCC). They (Rob and John ) chose to stop short of 250bhp to give reliability. The engine from a Puma, whilst a Sigma, has a lot of steel internals, giving it a lot more potential than the standard "crate" engine.

 

_{Democratic dissent is not disloyalty, it is a positive civic duty.}

 

 

Edited by - Golf Juliet Tango on 16 Sep 2010 16:53:51