Hq block with fuel injection top

[Monman71]

Hi,
I have always thought my next engine in my coupe I would want to go with the vn- vt 5 litre motor retro fit but what are the advantages of keeping my HQ block and using the heads and injection, I know I wouldn't have to do the filler neck on the tank and the cats on the pipes.

[HK1837]

If it is going in a HQ or HJ the advantages are you can do what you want as long as you keep the PCV system (injected motor has this) and a canister recovery for fuel tank vapour on post 1/1/75 vehicles. So no Engineering, no cats, no filler neck etc. It all bolts onto any 308 block, you just have to use an EFI cam and not a VSIII/VT roller cam. No goof for a HX coupe though as in these you have to use the whole injected motor and get it Engineered.

[ambientgoat]

Not that I'm going to do this, but what is the difference with the HX?

[HK1837]

ADR27A. You are free to change to basically whatever carby you want with HQ and HJ, and EFI is just another form of carby change. HX has to comply with ADR27A, and you have to prove this, so Engineering is required. Without testing which can be expensive the easiest way to prove compliance as part of the Engineering process is to use the whole EFI engine from the donor car, which also means cats and ulp filler neck (filler neck may have been relaxed now).

[Monman71]

If it is going in a HQ or HJ the advantages are you can do what you want as long as you keep the PCV system (injected motor has this) and a canister recovery for fuel tank vapour on post 1/1/75 vehicles. So no Engineering, no cats, no filler neck etc. It all bolts onto any 308 block, you just have to use an EFI cam and not a VSIII/VT roller cam. No goof for a HX coupe though as in these you have to use the whole injected motor and get it Engineered.

Will my extractors fit the efi heads? Cheers

[HK1837]

No, you'll need new ones to suit or use the factory VN-VSIII manifolds (SS early, cast later).

[V8VAN]

ADR27A. You are free to change to basically whatever carby you want with HQ and HJ, and EFI is just another form of carby change. HX has to comply with ADR27A, and you have to prove this, so Engineering is required. Without testing which can be expensive the easiest way to prove compliance as part of the Engineering process is to use the whole EFI engine from the donor car, which also means cats and ulp filler neck (filler neck may have been relaxed now).

So the Vn 5L I have here would have to be engineered in my Hx van?

[HK1837]

Yes. Not hard though, just use the VN canister, factory memcal, cats and restrictor in the fuel filler neck. It is the $500 or so for the Engineering that costs. You will probably get away without doing it if you don't run it out of rego, just do a blue slip for engine no. change. But it does need Engineering to do it right.

[V8VAN]

Thanks Byron, not hard at all. Another annoying cost is the worst thing about it.

[XX7SANDMN]

i fitted a vs 5l to a hx ute last year in perth no cats no engineering andno promblems at our inspection pits must be different rules in the east