Post your dyno curve here

Post your dyno curve here

Author
Discussion

phazed

21,844 posts

203 months

Saturday 21st February 2015
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Nice one Barrie.

That's not to be sniffed at biggrin

HarryW

15,150 posts

268 months

Saturday 21st February 2015
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Very nice, that torque looks like it will be fun....

DamianS3

1,803 posts

181 months

Saturday 21st February 2015
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Not in the big numbers like some but here is my little s3..

Figures at the wheels smile

Damian S3

phazed

21,844 posts

203 months

Sunday 22nd February 2015
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Why didn't I see the word turbo on that graph Barrie? Doh!

CHIMV8

2,768 posts

220 months

Sunday 22nd February 2015
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phazed said:
Why didn't I see the word turbo on that graph Barrie? Doh!
Take it you back on the vino then LOLbeer

A900ss

3,245 posts

151 months

Wednesday 4th March 2015
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Posted this in the Valve Sizes thread but might be more relevant here.

My 450 is fairly standard, only mods are stealth cam, smooth bore, larger AFM and mapping to go with the AFM. However when I look at the shape of my power graph, it really starts to tail off above 4k and I feel it has more to give. I'm assuming it's lack of air (I know it's not lack of petrol) so better heads should release more power....

I guess I'm just being a bit greedy because since the larger AFM and remap it feels really strong and I just want a bit more biggrin


ChilliWhizz

11,990 posts

160 months

Thursday 5th March 2015
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A900ss said:
Posted this in the Valve Sizes thread but might be more relevant here.

My 450 is fairly standard, only mods are stealth cam, smooth bore, larger AFM and mapping to go with the AFM. However when I look at the shape of my power graph, it really starts to tail off above 4k and I feel it has more to give. I'm assuming it's lack of air (I know it's not lack of petrol) so better heads should release more power....

I guess I'm just being a bit greedy because since the larger AFM and remap it feels really strong and I just want a bit more biggrin

Your power curve tail off at 4k rpm coincides with your peak torque... Compare it with Dr Mike's standard 450 (on previous page), power figures are similar but you have significantly more torque... I'd guess that'd be largely due to the Stealth cam scratchchin

phazed

21,844 posts

203 months

Thursday 5th March 2015
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I know nothing about the Stealth but it looks as if it is a good mid range cam and not a top end power cam.

Probably similar to the Typhoon cam.

Was that a decatted exhaust when that graph was produced?

Sardonicus

18,928 posts

220 months

Thursday 5th March 2015
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phazed said:
I know nothing about the Stealth but it looks as if it is a good mid range cam and not a top end power cam.

Probably similar to the Typhoon cam.

Was that a decatted exhaust when that graph was produced?
scratchchin bigger heads and a sorted intake would make that come alive and hold on longer IMO

QBee

20,905 posts

143 months

Thursday 5th March 2015
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MIne's a stealth, Peter - torquey rather than willy waving hehe

A900ss

3,245 posts

151 months

Thursday 5th March 2015
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Peter,

The cam I ordered was a Stealth. I can only assume that's what was sent and fitted.

Yep, precats and main cats out. (Forgot to mention it has ACT trumpets as well).

Thanks all.

db484bhpv8

8,655 posts

219 months

Thursday 5th March 2015
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How much is charged for these TVR special cam profiles?

I have just ordered a good old tried and tested Tornado from real steel.
Looking forward to posting my results with the refurbished heads and a few other tweaks.
Should be on Dales rollers in 3 weeks. So dont forget to add 10% for the North/South divide wink

A900ss

3,245 posts

151 months

Thursday 5th March 2015
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ChilliWhizz said:
Your power curve tail off at 4k rpm coincides with your peak torque... Compare it with Dr Mike's standard 450 (on previous page), power figures are similar but you have significantly more torque... I'd guess that'd be largely due to the Stealth cam scratchchin
Chilli,

It was Dr Mikes curve that I've been looking at.

It you compare the HP at 4k, I am just over 250 whereas he is just over 230. However over the next 1500 rpm, he not only catches up those missing 20 ponies, he actually overtakes me. That's why I think I need more air at high revs.

phazed

21,844 posts

203 months

Thursday 5th March 2015
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A900ss said:
Chilli,

It was Dr Mikes curve that I've been looking at.

It you compare the HP at 4k, I am just over 250 whereas he is just over 230. However over the next 1500 rpm, he not only catches up those missing 20 ponies, he actually overtakes me. That's why I think I need more air at high revs.
What size plenum have you?

db484bhpv8

8,655 posts

219 months

Thursday 5th March 2015
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Smooth bore elbow hehe

Seems like its choking. As said, ported inlet, trumpet base and 72mm plenum may be the answer to keep that graph climbing towards 300

A900ss

3,245 posts

151 months

Thursday 5th March 2015
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phazed said:
What size plenum have you?
Induction is standard effectively- just smooth bore and trumpets....


phazed

21,844 posts

203 months

Thursday 5th March 2015
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A900ss said:
Induction is standard effectively- just smooth bore and trumpets....
You probably haven't a 72mm plenum then. That will improve matters.

LongBaz463BHP

2,087 posts

216 months

Thursday 5th March 2015
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db484bhpv8 said:
So dont forget to add 10% for the North/South divide wink
435bhp then Derek ;-)

SILICONEKID345HP

14,997 posts

230 months

Thursday 5th March 2015
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LongBaz463BHP said:
435bhp then Derek ;-)
Is it tractable or does it kick you up the arse ?

What boost are you running ? Yours must be the most powerful Chimaera Turbo to date with Mac taking second place .;)



LongBaz463BHP

2,087 posts

216 months

Friday 6th March 2015
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SILICONEKID345HP said:
Is it tractable or does it kick you up the arse ?

What boost are you running ? Yours must be the most powerful Chimaera Turbo to date with Mac taking second place .;)
I am only running 10lb of boost at the moment;) Yes it does kick you in the arse, however I have not driven it to it's full potential as the road conditions have not allowed. You can't drive any Chim to it's full potential at this time of year.
It did spike at 441bhp on Dale's rollers but they had to cut short the mapping session due to some time constraints and mechanical issues.

P.S.
Only joking Derekbeer

Edited by LongBaz463BHP on Friday 6th March 13:51