NOOPS 160 wrote:Why don't you upgrade to an S1 , probably one of the best mods on the market.........
Yawn.
How much money are you thinking of spending and are you looking for just engine, or engine and handling.
* Standard S2 handling is pretty good (after all, the S1 owners keep fitting the inferior S2 suspension to their superior cars). If you can afford it I would consider adding the 135R-type wheels, but these aren't cheap. These give you 195 at the front instead of 175 and it makes a big difference. Failing that, squeeze some 195 section tyres onto the standard rims
* Sports exhaust is the best part of 500 quid these days I think.
* K&N Panel filter for your standard airbox is better VFM than bolt on cone-type filter (cue Yvo

), and is around 50 quid.
* After those I would start looking at the engine. You can get to 155 BHP with bigger inlet valves+mild cam+4-2-1 exhaust manifold+fuel pressure regulator running on standard intake and ECU. This has the advantage of being smooth and looking standard. You also get a free cam belt and coolant change into the deal

The cost for all of this is about 1,100 p/x for your old head and cams. The cost of materials to refit it all is 200-250 depending on what you do (new belt, new tensioner, new head bolts, new gasket set, new oil, new coolant, new thermostat are all recommended).
* If you just want bolt on, a set of racy cams on a standard head is ~600 for the parts (cams, verniers, timing belt, tensioner, head gloop) and a couple of hours to fit. But to get good power hike out of cams alone always means a less smooth car - hence I would go for milder cams and bigger inlet given a choice.
* I also have some 135R heads for sale if you want them - you could p/x against your standard head and then rebuild with some mild cams to get a nice ~140 BHP engine on standard exhaust manifold for about 750 less than the full big valve jobbie.
Cheers,
Robin