Post your dyno curve here

[mgjc]

mgjc said:

Just had a dyno test and tune-up on my Chimaera 400 at Ric Woods place - top guy!

For what is almost a standard car, I'm happy

Mods...

ACT carbon trumpets (38mm)
ACT smooth bore induction kit
Clive y-piece

Now producing...

262.6 BHP
271.1 lbft

Edited by mgjc on Wednesday 7th May 17:16

Ok, so I have had a few modifications carried out since the last dyno I ran.

Was running the following mods

ACT carbon trumpets (38mm)
ACT smooth bore induction kit
Clive y-piece
pre-cats removed

Now running...

ACT - smooth bore induction kit
V8 development - Stage III heads (larger valves)
V8 development - ported trumpet base to 45mm
V8 development - ported inlet manifold to 45mm
Clive y-piece
pre-cats removed
Kits and Classics ECU re-mapping

What confounds me is the dyno I had previously produced

262.6 BHP
271.1 lbft

@35.8C ambient temperature

With the last dyno at Joolz (Kits and Classics) place I'm now at

263 BHP
261 lbft

@12C ambient temperature

In reality the one I had done previously wasn't a real indication of the BHP and torque my engine is actually making!

I should say that since the head/trumpet/inlet work the car feels far more responsive and eager to accelerate than it did before the mods. So I'm sure that the BHP/Torque figures are now accurate and the figures I posted back in May 2014 were just fantasy!!

On the positive side - Joolz is a top man , very knowledgeable and professional and I learnt a lot on my day with him.

[Richard 858]

mgjc said:

Ok, so I have had a few modifications carried out since the last dyno I ran.

Was running the following mods

ACT carbon trumpets (38mm)
ACT smooth bore induction kit
Clive y-piece
pre-cats removed

Now running...

ACT - smooth bore induction kit
V8 development - Stage III heads (larger valves)
V8 development - ported trumpet base to 45mm
V8 development - ported inlet manifold to 45mm
Clive y-piece
pre-cats removed
Kits and Classics ECU re-mapping

What confounds me is the dyno I had previously produced

262.6 BHP
271.1 lbft

@35.8C ambient temperature

With the last dyno at Joolz (Kits and Classics) place I'm now at

263 BHP
261 lbft

@12C ambient temperature

In reality the one I had done previously wasn't a real indication of the BHP and torque my engine is actually making!

I should say that since the head/trumpet/inlet work the car feels far more responsive and eager to accelerate than it did before the mods. So I'm sure that the BHP/Torque figures are now accurate and the figures I posted back in May 2014 were just fantasy!!

On the positive side - Joolz is a top man , very knowledgeable and professional and I learnt a lot on my day with him.

Sometimes these things just don't make sense but there can be a fair bit of variation from one dyno to another, the only real way to compare before & after mods is on the same dyno under the same atmospheric conditions with the same operator. However as the great Ray Davies said "it's a mixed up, muddled up, shook up world"..........no. wait thats for Lola's not TVR's

Edited by Richard 858 on Thursday 28th January 17:23

[gacksen]

if mods done put the car on the same dyno as before. otherwise senseless to compare the readings......

[Sardonicus]

Seriously though I can't see your 1st combo running very close to a stock 500's bhp stock output,

[mgjc]

Sardonicus said:

Seriously though I can't see your 1st combo running very close to a stock 500's bhp stock output,

I agree completely and I was kidding myself that a pretty much standard 400 could make those initial figures. I feel cheated that I've been labouring under a falsehood of figures for 18 months or so!

[phazed]

mgjc said:

Ok, so I have had a few modifications carried out since the last dyno I ran.

Was running the following mods

ACT carbon trumpets (38mm)
ACT smooth bore induction kit
Clive y-piece
pre-cats removed

Now running...

ACT - smooth bore induction kit
V8 development - Stage III heads (larger valves)
V8 development - ported trumpet base to 45mm
V8 development - ported inlet manifold to 45mm
Clive y-piece
pre-cats removed
Kits and Classics ECU re-mapping

What confounds me is the dyno I had previously produced

262.6 BHP
271.1 lbft

@35.8C ambient temperature

With the last dyno at Joolz (Kits and Classics) place I'm now at

263 BHP
261 lbft

@12C ambient temperature

In reality the one I had done previously wasn't a real indication of the BHP and torque my engine is actually making!

I should say that since the head/trumpet/inlet work the car feels far more responsive and eager to accelerate than it did before the mods. So I'm sure that the BHP/Torque figures are now accurate and the figures I posted back in May 2014 were just fantasy!!

On the positive side - Joolz is a top man , very knowledgeable and professional and I learnt a lot on my day with him.

That is superb power for a 400!

[phazed]

mgjc said:

Ok, so I have had a few modifications carried out since the last dyno I ran.

Was running the following mods

ACT carbon trumpets (38mm)
ACT smooth bore induction kit
Clive y-piece
pre-cats removed

Now running...

ACT - smooth bore induction kit
V8 development - Stage III heads (larger valves)
V8 development - ported trumpet base to 45mm
V8 development - ported inlet manifold to 45mm
Clive y-piece
pre-cats removed
Kits and Classics ECU re-mapping

What confounds me is the dyno I had previously produced

262.6 BHP
271.1 lbft

@35.8C ambient temperature

With the last dyno at Joolz (Kits and Classics) place I'm now at

263 BHP
261 lbft

@12C ambient temperature

In reality the one I had done previously wasn't a real indication of the BHP and torque my engine is actually making!

I should say that since the head/trumpet/inlet work the car feels far more responsive and eager to accelerate than it did before the mods. So I'm sure that the BHP/Torque figures are now accurate and the figures I posted back in May 2014 were just fantasy!!

On the positive side - Joolz is a top man , very knowledgeable and professional and I learnt a lot on my day with him.

That is superb power for a 400!

[trev4]

Thought I'd share my efforts with the group, not bad for a little 4lt.

Specification.

V8D warrior heads (stage 111 new spec)
45mm polished and ported inlet manifold
45mm shortened trumpet base
72mm plenum
Mc1 cam


Joolz worked his magic yesterday and got the fueling spot on, she's so smooth on the road, can't wait for the first track day.

Edited by trev4 on Wednesday 8th February 21:18

[phazed]

Top power for a 400, well done!

[jojackson4]

Bring it on am at jools on Monday

[trev4]

phazed said:

Top power for a 400, well done!

Thanks Peter I can't take the credit Mat Smith and Joolz did the clever stuff I just put my hand in my pocket

[trev4]

jojackson4 said:

Bring it on am at jools on Monday

He's a top man but far to ethical which spoilt my fun, we had one run which made 296bhp but he wouldn't let me have it to post on here because it wasn't a fair representation of the finished car.

[phazed]

You really must notice the difference.

What was the power before?

[trev4]

Not sure what the power was before but Mat thought it must have been down around 20hp by the wear on the cam, the only way I can describe the difference and it may sound strange but the car feels so much lighter, it's obviously quicker on exceleration and very smooth but you don't get the kick that you have with the larger capacity engine's, probably not a bad thing at least it won't try and put me in the ditch when I'm not paying attention.

[phazed]

Know what you mean by, "lightness".

When mine is under power it seems that the tyres are hardly touching the ground!

You will notice that more on track and in fact on a short sprint circuit the feeling of lightness as the body is thrust in all directions is almost floaty but it's not.

Look forward to the better weather and a track day. Do a swap for comparison if you feel like it?

[QBee]

phazed said:

Know what you mean by, "lightness".

When mine is under power it seems that the tyres are hardly touching the ground!

You will notice that more on track and in fact on a short sprint circuit the feeling of lightness as the body is thrust in all directions is almost floaty but it's not.

Look forward to the better weather and a track day. Do a swap for comparison if you feel like it?

Wait for meeeeeeeee.....!!!!

[trev4]

QBee said:

phazed said:

Know what you mean by, "lightness".

When mine is under power it seems that the tyres are hardly touching the ground!

You will notice that more on track and in fact on a short sprint circuit the feeling of lightness as the body is thrust in all directions is almost floaty but it's not.

Look forward to the better weather and a track day. Do a swap for comparison if you feel like it?

Wait for meeeeeeeee.....!!!!

You two can can take as long as you like to get your cars back on the road your only going to shatter my illusions that I now have a car that is quite quick

[QBee]

trev4 said:

QBee said:

phazed said:

Know what you mean by, "lightness".

When mine is under power it seems that the tyres are hardly touching the ground!

You will notice that more on track and in fact on a short sprint circuit the feeling of lightness as the body is thrust in all directions is almost floaty but it's not.

Look forward to the better weather and a track day. Do a swap for comparison if you feel like it?

Wait for meeeeeeeee.....!!!!

You two can can take as long as you like to get your cars back on the road your only going to shatter my illusions that I now have a car that is quite quick

Your car sounds a lot of fun. Enough power to be interesting, not enough to terrify.
Let's find a track we all know and we can all drive each other's.
We might even try to get Mat along to teach us all how to carry speed through corners.
He might be the last to arrive at the race track, but the lad seems to have learnt quite quickly......

[DangerousDerek]

this was the aim last build time



The engine actually only gave 330bhp but it was the day after I finished putting it together and was still bedding in. The day after my terminal speeds started at 108mph and rose to 113 by the next day so that tells a story.

[Brummmie]