S/Cs, TTs and Con Rods

[StephenG]

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.

[ir_fuel]

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

[ir_fuel]

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.

[lomoto]

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

[live2themaxuk]

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) . . .

[Baptist]

And its even higher compression.

[Removed]

And its even higher compression.

 

hence even less appropriate for FI

[Baptist]

Yes.

[live2themaxuk]

nothing a thicker headgasket couldnt fix. . . .

 

J:D

[Baptist]

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.

[ir_fuel]

The correct engineering solution is to stop messing around and buy a TVR :teeth:

[Baptist]

Id hardly call TVR well engineered.

 

Depends how you tackle the project really.

[ir_fuel]

Well, ok then, a Porsche 911 Turbo

[Baptist]

Thats more like it.

 

Bit pricey for the new one, though.

[ir_fuel]

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!) ?

[Baptist]

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.

[ir_fuel]

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:

[Baptist]

Aye, you cant beat toys to play with!

[live2themaxuk]

Who wants a standard car anyway. . . . . . .not meeeeeee

 

For most people, cars are just appliances . . . .thats the long and short of it

 

 

Jamie

[captint]

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?

[Baptist]

Some of them, yeah.

[captint]

What sort of percentage saving were you looking at 40%?

[Baptist]

Depends on what you buy, as some parts arent available over here. Stuff is about 40% cheaper though.

[captint]

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

[captint]

Oh and with the zorst and Turbo / SC Im running low budget wise