Recent content by simon_b

It’s either M5 or M6, standard pitch. Can’t remember which.

What spark plugs are you running? Are they the renault recommended NGK ones?

This is awesome, thanks for sharing. I've always thought the group N timing sounds like a good idea, so good to see the curve. After the "added air leak" and calibration tweaks how is the idle? Is it still noticeably worse than standard?

I reckon the timing is fine on Chambers_RS’s car because can see from his other thread that it’s making 160 ftlb which is good ... that’s the group n timing working.

One thing that would be really interesting to compare between the engines that make really good power and ones that don't is the air filter setup and more importantly, the intake pipe between the air filter and the SM inlet. The dimensions of this intake pipe can really influence the performance...

^^^ LOL! Yeah sure, if you look at the pic below, the bit I circled in red is only 2" diameter pipe. I know because I just bought one and it's currently on the work bench in my garage and I measured it. But like Bloke says, it'll not be worth a massive amount.

The other thing you could check that might be hurting the top end power is if the SM inlet isn’t very well aligned with the head and there is a step between the inlet manifold and head ports. And check that the air filter is nice and clean if you’ve not already checked.

I understand, so if it’s losing air flow above 6,500 rpm, particularly with vvt advanced, high exhaust back pressure could cause this. I know that the RS192 (if it’s post 2014) has a 6” odd length of pipe upstream of the centre silencer that is only 2” diameter, so it’s possible that the exhaust...

Or do you mean it made more power with vvt retarded after 6,500 rpm, and also by lean it out, do you just mean that the injector pulse width had to be reduced to keep AFR optimised? Do you have an AFR graph?

That looks like a nice torque curve to me! Why has he had to pull back the vvt and lean it out after 6,500 rpm, what happens if leave the vvt advanced and keep the AFR optimised?

I have T31PHY and live in Warwick. But I don’t remember being on the A5 back in August.

I’m not aware of a thread where the sport suspension conversion is discussed. It’s really easy though. On the back, you just unbolt the dampers, I think I then had to lever the trailing arm down with a breaker bar to get the old spring out, then reassemble with the 182 cup parts. On the front...

Welcome! Which dCi have you bought? As well as a Clio trophy, we also have a clio dCi 80 dynamiqe + which we have had for 10 years, great car! It’s pretty easy (and cheap) to fit 172 or 182 suspension on the dCi, if you’re that way inclined!

^^+1 The 182 standard system is 2.25” anyway isnt it? It feels about the right size for this power level imo.

Why did you try and jump it in the first place? When you tried to start the car before you put the leads on the wrong way round, did the solenoid click then?