Chimaera 500 work begins

Chimaera 500 work begins

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Discussion

dbv8

8,655 posts

219 months

Sunday 7th October 2012
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I am completely biased when it comes to exhaust notes and RV8s but that does sound glorious.
Do we have some numbers to drool over too?
Maybe a dyno graph also?

DonkeyApple

54,781 posts

168 months

Sunday 7th October 2012
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Sounds lovely. Was that a bit of vicous torque steer half way through?

Simon says

18,925 posts

220 months

Sunday 7th October 2012
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Nice transplant, sounds great too.

v8ndy

Original Poster:

149 posts

238 months

Sunday 7th October 2012
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DonkeyApple said:
Sounds lovely. Was that a bit of vicous torque steer half way through?
Ah you noticed! thats an eagle eye, trying to get the power down in 2nd can be great fun but then up into 3rd you`ve still gotta be gentle with the throttle, Its only running the 14psi pulley as its still being mapped, trying to get the Bosch 044 to run with the returnless fuel system has been tricky but its heading in the right direction now

SILICONEKID340HP

14,997 posts

230 months

Sunday 7th October 2012
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v8ndy said:
DonkeyApple said:
Sounds lovely. Was that a bit of vicous torque steer half way through?
Ah you noticed! thats an eagle eye, trying to get the power down in 2nd can be great fun but then up into 3rd you`ve still gotta be gentle with the throttle, Its only running the 14psi pulley as its still being mapped, trying to get the Bosch 044 to run with the returnless fuel system has been tricky but its heading in the right direction now
Why does it not have a return back to the tank ?

v8ndy

Original Poster:

149 posts

238 months

Sunday 7th October 2012
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SILICONEKID340HP said:
Why does it not have a return back to the tank ?
Its the way Ford designed the fuel system, The ecu modulates the fuel pump voltage to maintain the fuel rail pressure. The idea is that your not circulating unused fuel to the engine and back to the fuel tank, heating it up causing more fuel vapours and more emissions.
The trouble with the Bosch 044 is its doing to good a job with to much fuel!

Graham

16,367 posts

283 months

Sunday 7th October 2012
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v8ndy said:
Its the way Ford designed the fuel system, The ecu modulates the fuel pump voltage to maintain the fuel rail pressure. The idea is that your not circulating unused fuel to the engine and back to the fuel tank, heating it up causing more fuel vapours and more emissions.
The trouble with the Bosch 044 is its doing to good a job with to much fuel!
i've gone returnless on the rv8 in the tuscan racer. using an atl fuel system. pump and prv are in the tank..

SSPPGG

2,120 posts

201 months

Sunday 7th October 2012
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common with the Ls installs to place the pump/filter/regulator/return around the diff, so there is only a single fuel run to the front.

interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!

v8ndy

Original Poster:

149 posts

238 months

Tuesday 9th October 2012
quotequote all
SSPPGG said:
common with the Ls installs to place the pump/filter/regulator/return around the diff, so there is only a single fuel run to the front.

interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!
It sounds like the LS fuel system may slightly differ? The Ford setup has no regulator, no return its all electronic. The fuel rail has a pressure sensor providing the ecu with the signal. The ecu then talks with another module, the FPDM (Fuel Pump Delivery Module) pulse width modulates the voltage to the fuel pump. The beauty with this setup is if your needing more fuel and your pumps maxed out! just increase the voltage and you`ll get more fuel "Simples" Kenne Bell sells a device known as BAP (boost a pump) which ups the voltage and the good old standard Ford FPDM will handle up 18volts.
The problem I`ve been having with the Bosch 044 is turning it down low enough, and we don`t know if it will last with PWM, its been causing driveability issue mainly stuttering on cruise throttle but thats pretty much sorted now.
For a job over the winter I`ve got a twin pump intank setup from an 05 cobra that I`ll "make it fit" somehow along with a small list of jobs to finish. But I just need to keep driving it at the moment to find out the niggles

Rob282828

2,393 posts

148 months

Tuesday 9th October 2012
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Andy, please could you tell me what this button does? I'm guessing it's traction control but i have no idea really. smile


DonkeyApple

54,781 posts

168 months

Tuesday 9th October 2012
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Rob282828 said:
Andy, please could you tell me what this button does? I'm guessing it's traction control but i have no idea really. smile

It's for bailing out at high speed isn't it?

Harrytsg

1,264 posts

161 months

Tuesday 9th October 2012
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DonkeyApple said:
Rob282828 said:
Andy, please could you tell me what this button does? I'm guessing it's traction control but i have no idea really. smile

It's for bailing out at high speed isn't it?
The button on top is the ejector seat, the ball turns left or right to choose which seat.


Rob282828

2,393 posts

148 months

Tuesday 9th October 2012
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....and i thought people were more sensible in the TVR section. rolleyes

2 sMoKiN bArReLs

30,222 posts

234 months

Tuesday 9th October 2012
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Rob282828 said:
....and i thought people were more sensible in the TVR section. rolleyes
Noooooooooooooooooooooooooooooooooooooooooooo

DonkeyApple

54,781 posts

168 months

Tuesday 9th October 2012
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Rob282828 said:
....and i thought people were more sensible in the TVR section. rolleyes
You asked what the knob did, we told you. Job jobbed. wink

Rob282828

2,393 posts

148 months

Tuesday 9th October 2012
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It's really an ejector seat is it? Sounds like a load of bks to me.

Harrytsg

1,264 posts

161 months

Tuesday 9th October 2012
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It's why they have the targa top, this blows out with explosive bolts just before your chosen seat ejects

DonkeyApple

54,781 posts

168 months

Tuesday 9th October 2012
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Harrytsg said:
It's why they have the targa top, this blows out with explosive bolts just before your chosen seat ejects
And the reason why the Griff doesn't have the knob is because they don't have the roof on when driving. smile

2 sMoKiN bArReLs

30,222 posts

234 months

Tuesday 9th October 2012
quotequote all
Harrytsg said:
It's why they have the targa top, this blows out with explosive bolts just before your chosen seat ejects
The Cerbera has the same button, but it does tend to make the cabin a little messy when deployed.

Rob282828

2,393 posts

148 months

Tuesday 9th October 2012
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This must be a very dumb question i assume? Can't understand why you're taking the piss so much.