StephenG Posted November 24, 2006 Share Posted November 24, 2006 I think you're right about that. Keeping the SC in the sweet spot though is as tricky as getting the power down though. no manufacturer over engineers engine internals nowadays.. Not true. Many OEM's over-engineer parts specifically to KEEP costs down. Take for example, the current Mini engine and the 1.9TDi block used in the VAG series. It was deliberately over engineered so that different models could have the power turned up without having to manufacture a completely different set of internals. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 24, 2006 Share Posted November 24, 2006 the current Mini engine and the 1.9TDi block used in the VAG series. It was deliberately over engineered so that different models could have the power turned up without having to manufacture a completely different set of internals. There are differences between the 1.9TDI engine's dough Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 24, 2006 Share Posted November 24, 2006 And if you talk about margins, one could say that e.g. the 3.5 lump in the Murano uses the same pieces, and it prolly has more low-down torque than the Z engine? But how much is this margin? If you were to "upgrade" the performance of the engine to stay within that margin, i would recon it'd be around 20-30Nm of torque, the costs wouldnt weigh up against the gains. Quote Link to comment Share on other sites More sharing options...
lomoto Posted November 24, 2006 Share Posted November 24, 2006 I think you're right about that. Keeping the SC in the sweet spot though is as tricky as getting the power down though. no manufacturer over engineers engine internals nowadays.. Not true. Many OEM's over-engineer parts specifically to KEEP costs down. Take for example, the current Mini engine and the 1.9TDi block used in the VAG series. It was deliberately over engineered so that different models could have the power turned up without having to manufacture a completely different set of internals. they only did that to save money in the long run though , not general practice, I'm sure Nissan wont put better internals in than necessary on the off chance some bod in Foreign countries will try and stick a supercharger on it sometime or other Quote Link to comment Share on other sites More sharing options...
live2themaxuk Posted November 24, 2006 Share Posted November 24, 2006 The enigne in the 07 is supposed to have beefier conrods though . . . . . . and, i believe they are using this engine in the new twin turbo skyline too. . . . . shame the engine doesnt fit properly under the current bonnet. (nasty bulg) . . . Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 24, 2006 Share Posted November 24, 2006 And its even higher compression. Quote Link to comment Share on other sites More sharing options...
Removed Posted November 24, 2006 Share Posted November 24, 2006 And its even higher compression. hence even less appropriate for FI Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 24, 2006 Share Posted November 24, 2006 Yes. Quote Link to comment Share on other sites More sharing options...
live2themaxuk Posted November 25, 2006 Share Posted November 25, 2006 nothing a thicker headgasket couldnt fix. . . . J:D Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 25, 2006 Share Posted November 25, 2006 Your not going to reduce the compression by a headgasket alone. You can drop or raise it slightly by changing the head gasket, but nothing like what you need. The correct engineering solution is to change the pistons, not fudge it with gaskets. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 25, 2006 Share Posted November 25, 2006 The correct engineering solution is to stop messing around and buy a TVR :teeth: Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 25, 2006 Share Posted November 25, 2006 Id hardly call TVR well engineered. Depends how you tackle the project really. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 25, 2006 Share Posted November 25, 2006 Well, ok then, a Porsche 911 Turbo Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 25, 2006 Share Posted November 25, 2006 Thats more like it. Bit pricey for the new one, though. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 25, 2006 Share Posted November 25, 2006 Same price as the old one i thought? The question i ask myself is, if you have a good F/I conversion, e.g. with reworked internals and so on, how much money does that cost in total, and if you add that money to the price of a new Z, what kind of car could you get for it (and still have factory warranty on top of that!) ? Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 25, 2006 Share Posted November 25, 2006 My car didnt cost anywhere near the price of a 911 turbo. I just like tinkering with cars, and to be honest, there isnt much on the road that has the performance to match my motor. Your either into messing with em or not. Quote Link to comment Share on other sites More sharing options...
ir_fuel Posted November 25, 2006 Share Posted November 25, 2006 Ow well, in my case its simple, dont have the cash to buy a 911 Turbo, nor have the cash to mess around with my engine to push it to 400+ hp. Damn motorbikes, another money-pit :teeth: Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 25, 2006 Share Posted November 25, 2006 Aye, you cant beat toys to play with! Quote Link to comment Share on other sites More sharing options...
live2themaxuk Posted November 25, 2006 Share Posted November 25, 2006 Who wants a standard car anyway. . . . . . .not meeeeeee For most people, cars are just appliances . . . .thats the long and short of it Jamie Quote Link to comment Share on other sites More sharing options...
captint Posted November 26, 2006 Share Posted November 26, 2006 Not really. The pistons are not really suitable for FI, either, so they would also need changing. You will also need uprated studs, head studs, head gaskets, crank regrind, new big ends (whether you uprate them or not, is personal choice). Like I say, the costs are mostly in labour, so just changing the rods alone wouldnt be very cost effective in the long run. While you've got it in bits, you might as well do the job properly. What I've described above, is a basic bottom end upgrade. But if you knew you had a bottom end that was capable of holding much more than 400bhp, wouldnt you want to explore the realms of more power???? Did you buy your internal parts from the US? Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 27, 2006 Share Posted November 27, 2006 Some of them, yeah. Quote Link to comment Share on other sites More sharing options...
captint Posted November 27, 2006 Share Posted November 27, 2006 What sort of percentage saving were you looking at 40%? Quote Link to comment Share on other sites More sharing options...
Baptist Posted November 27, 2006 Share Posted November 27, 2006 Depends on what you buy, as some parts arent available over here. Stuff is about 40% cheaper though. Quote Link to comment Share on other sites More sharing options...
captint Posted December 4, 2006 Share Posted December 4, 2006 Ok so here's my current internals list, any advice is appreciated 6 x Fuel injectors 1 x FCON V Pro 1 x Harness, MAP sensor, air temp sensors etc for FCON 1 x Fuel pump 1 x Set Cosworth forged pistons 1 x Set piston rings 1 x Set Cosworth forged connecting rods (A beam) or (H beam) 1 x Set Cosworth cylinder head gaskets 1 x Set Cosworth engine bearings 1 x Set Cosworth main bearing cap studs 1 x Set Cosworth cylinder head studs 1 x Set Cosworth camshafts Quote Link to comment Share on other sites More sharing options...
captint Posted December 4, 2006 Share Posted December 4, 2006 Oh and with the zorst and Turbo / SC Im running low budget wise Quote Link to comment Share on other sites More sharing options...
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