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Rising rate fuel reg 

 

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 Post subject: Rising rate fuel reg
Posted: Mon May 14, 2007 2:40 pm 
Getting Side Ways
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Age: 36

Posts: 9453

Joined: 9th Nov 2004

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Ride: Fordrunner 5.0 Turbo

Location: Wollongong
NSW, Australia

The actual question is for my brothers VL turbo but I'll ask here as those spankers at calasiturbo couldn't organise a root in a brothel and all they do is crap on about the bresciani and rajab workshops instead of coming up with proper technical answers so here goes.

The car is a pretty much standard 1986 VLT with the only mods being a 600x300x76 delta fin front mount cooler from Just Jap, 2.5" cat back zorst and a boost tap allowing it to theoretically hit 17psi with the standard turbo. I do know that the injectors run out of puff with standard fuel pressure at around the 12psi mark. What I want to know is what rate fuel reg should he get for it to run a safe 15psi boost pressure without maxing the injectors out as well as having good part throttle driveabillity (who cares about top end as long as it pulls hard like a train and doesn't ping then its all good) and decent fuel economy. He recons a 2:1 mallpassi would do but I was thinking maybe a larger rate fuel reg. What do you guys reckon? And please, no sell the VLT and buy an XR6T comments as this car is a project between myself and my brother and neither is too keen to let it go unless someone offers the right $$$.
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Posted: Tue May 15, 2007 2:09 pm 
Getting Side Ways
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Age: 36

Posts: 9453

Joined: 9th Nov 2004

Gallery: 4 images

Ride: Fordrunner 5.0 Turbo

Location: Wollongong
NSW, Australia

Gee guys thanks for your help. He ended up buying a malpassi (don't know what rate it rises at) and will have it fitted by the end of the week
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Posted: Wed May 16, 2007 1:07 am 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

I would use a Sard reg...
I would also fit a larger fuel pump...
The higher pressure you use the harder it is on fuel pumps to supply, in quantity....

 

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Posted: Wed May 16, 2007 1:55 pm 
Getting Side Ways
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Age: 36

Posts: 9453

Joined: 9th Nov 2004

Gallery: 4 images

Ride: Fordrunner 5.0 Turbo

Location: Wollongong
NSW, Australia

How much do they retail for? Anyway we fitted it last night and the car runs like a dream. Should have it dyno tuned by the end of next week.
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Posted: Wed May 16, 2007 10:18 pm 
Getting Side Ways
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Age: 29

Posts: 975

Joined: 26th Nov 2004

Ride: el falcon

Power: 608 rwkw

Location: Waroona
WA, Australia

yes my sard reg is far far better than my old malpassi.

 

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