Fuel Injection.

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Fuel Injection.

Post by BusaPhill » Sat Jun 09, 2018 1:28 pm

Question for the Scimitar guys that have gone injection.

Are you still using the original tank with a swirl pot.
Or a
Fabricated new tank.
Basically what have you done to convert.

Been offered a 2.9 Cosworth not cheap but could sell my Essex to offset cost.


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Fuel Injection.

Post by AndyKing » Sat Jun 09, 2018 5:32 pm

On my Coupe I'm using the original tank with a swirl pot, using a facet posi-flow pump to the swirl pot, then a Bosch external pump, via a cosworth filter, to the injectors.

The return from the pressure regulator goes back to the swirl pot, then a return (with a 1.5mm restrictor) from the swirl pot to the tank. The restrictor prevents the lift pump from constantly running.

This setup is noisier than an in-tank setup, but you only notice when you are stationary.

Which version of the Cosworth engine are you going for, BOA or BOB?


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Post by AJL Electronics » Sat Jun 09, 2018 6:10 pm

I had a new alloy tank fabricated with a Rover in tank pump. I looked at swirl pots etc but there just wasn't enough space in a safe area to put it all.


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Fuel Injection.

Post by scimjim » Sat Jun 09, 2018 8:44 pm

You could do either - but the 24v 2.9 is VERY wide at the top, hence it’s only been done a few times. :D


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Post by philhoward » Sat Jun 09, 2018 8:48 pm

You can buy a whole Omega for less than the price of a 24V 2.9i lump - and the Omega engine fits beautifully.


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Post by BusaPhill » Sun Jun 10, 2018 9:34 am

philhoward wrote:
Sat Jun 09, 2018 8:48 pm
You can buy a whole Omega for less than the price of a 24V 2.9i lump - and the Omega engine fits beautifully.
Not being Funny But it's a Vauxhall.


Think it was a BOA.
I know they do a BOB what's the difference.
Any other tips if these comes off.


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Post by philhoward » Sun Jun 10, 2018 9:55 am

Your call, but as long as you keep with the matching auto box, loom and ECU(s) then you will stand a chance of getting it running. As for things to watch, chain guides are a known weak point IIRC.

The British built GM product is more powerful and easier to transplant, despite what you might think. I don’t think you’ll find anyone that’s done a BOA/BOB conversion who will do another. I’d happily do another X30XE conversion.


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Post by BusaPhill » Mon Jun 11, 2018 3:02 pm

That's what I was thinking complete running gear Engine/Box.
Bob using Pats alarm system so Boa is easier swap.
Bob is technically the better engine
Would strip it down and rebuild anyway.

Power wise depending where you find the info HP there isn't much between them Cosworth/Xe30e.

But the Cosworth would have the bigger grin factor.

Ideally I like the TVR AJPV8 but the cost now are ridiculous.


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