Dyno Graph - how does it look ?

[ewan221]

[haircutmike]

Fueling's a bit up n down, really richening at the top end, (better then running weak).

Power is about right for a 450, (a good standard 500 is about 275).

Torque, possibly a tad low imho.

I assume this is a standard car?

[ewan221]

haircutmike said:

I assume this is a standard car?

yes no mods at all at the moment

[scotty_d]

Agree with Pete. I wonder where your ignition timing is sitting i bet it could be advanced a few degree's that might lean it out a little and give a bit more power.

[LordGrover]

Maybe it's the difference or a characteristic of the 450 and my old 430 precat or different cam profiles, but the torque curve above looks comparatively peaky too.


NB: At wheels

[haircutmike]

The torque curve is a bit peaky isn't it. You could do much with that.

My present 4.6 runs mid 320s bhp and 335 torque, achievable with a bit of work.

Heres last years 5.0 with a bit of work. A much better torque curve that felt like it could pull from any revs in any gear.

The two readings are with and without the main cat!

[Alexdaredevilz]

Agreed with the torque curve looking peaky, how long have you had it?

[haircutmike]

Why aren't the pictures showing?

[LordGrover]

thumbsnap on one of it's periodic feck ups, I suspect.

They'll reappear later.

[ewan221]

haircutmike said:

The torque curve is a bit peaky isn't it. You could do much with that.

My present 4.6 runs mid 320s bhp and 335 torque, achievable with a bit of work.

Heres last years 5.0 with a bit of work. A much better torque curve that felt like it could pull from any revs in any gear.

The two readings are with and without the main cat!

Any pointers at where I could start ? Im not looking to chase huge numbers but another 20 to 30 ho and tourque would be perfect :-)

[Alexdaredevilz]

Decat and mapped ignition/fuelling

[LordGrover]

ewan221 said:

Any pointers at where I could start ? Im not looking to chase huge numbers but another 20 to 30 ho and tourque would be perfect :-)

That's not a trivial increase.
Ensure it's running right and as well as possible first; a decent tuning including timing and throttle pot voltages etc. would be good starting point and ensure it's breathing as well it it can - make sure intake hose is not collapsed or crushed or owt - consider replacing with smoothbore.
NB. I have no clue - I just pay someone who knows what to do.

[haircutmike]

ewan221 said:

Any pointers at where I could start ? Im not looking to chase huge numbers but another 20 to 30 ho and tourque would be perfect :-)

Have a look at my cars spec in my profile for starters, you'll get the idea.

[Simon says]

Alexdaredevilz said:

Decat and mapped ignition/fuelling

Oi have you got the MS fitted on yet?

[Alexdaredevilz]

Simon says said:

i have you got the MS fitted on yet?

Not had time, moving house tomorrow

And not packed one single item!

[dbv8]

Alexdaredevilz said:

Not had time, moving house tomorrow

And not packed one single item!

Dont forget my wine! I could do with that.... i really could

Bring it up to York on Saturday night please

[Alexdaredevilz]

Only if you can tow a mini from Peterborough to Swatry, and help lifting white goods and 1/2 ton tool box!

[dbv8]

Alexdaredevilz said:

Only if you can tow a mini from Peterborough to Swatry, and help lifting white goods and 1/2 ton tool box!

Pfft. Gonna have more than that in the TVR going home tomorrow.
Wait for the pics
Might have to raise the rear another inch tonight to cope.

[haircutmike]

Alexdaredevilz said:

Only if you can tow a mini from Peterborough to Swatry, and help lifting white goods and 1/2 ton tool box!

I am soooo glad I now live too far away to call round and help .

Good luck with the move




Still no picture above?

[Alexdaredevilz]

dbv8 said:

Pfft. Gonna have more than that in the TVR going home tomorrow.
Wait for the pics
Might have to raise the rear another inch tonight to cope.

Moving house in 15 hours,0 boxes packed and all you can talk about is sticking another inch at the rear?

I think you should help me