SONIC Injection

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SONIC Injection Manufacturer of Aftermarket, Performance Parts, Manifolds and EFI Parts

For those that may have been following this, I have added pads suitably sized to machine for injectors.Due to the size a...
24/02/2026

For those that may have been following this, I have added pads suitably sized to machine for injectors.

Due to the size and length of runners, there is only room for 3 injectors.

Several people expressed interest in having this feature, hopefully this satisfies them.

Let me know what you think, i'm keen to continue on with the pattern.😎

20/01/2026

There has been a bit going on in the background over the 'break'.

There are some new products coming soon, a couple that have gone live already.

I have also, finally got around to adding my Speedflow Stock to the website.

Casting pattern 3d model for the Holden Grey Weber intake is nearly finalised.

Stay tuned for some updates!

A couple of weeks ago I had this cool little job come to me.It was a relatively straightforward "can you fix it"? But it...
27/11/2025

A couple of weeks ago I had this cool little job come to me.

It was a relatively straightforward "can you fix it"?

But it came with a cool story.

An engine builder local to me, helps out with the mechanical side of a 1986 Benetton B186 F1 car.

This is the shift detent spring retainer for the gearbox from it.

The old component was aluminium alloy for weight purposes and the replacement part I have made from 4140. It's a couple of grams heavier but I'm assured that vehicle weight isn't as important as it was in 1986

I dug a little deeper into the history of the car and found out that it is the car that Gerhard Berger raced in Adelaide in 1986 and that Gerhard himself will be in Adelaide for the Adelaide Supercar Grand final and will be driving the car for track demonstrations.

It's a privilege to have played a very small part in helping it hit the tarmac.

Recently I had Jimmy contact me to ask if I would consider making a true 12 port SU intake.Coincidentally I had been thi...
02/11/2025

Recently I had Jimmy contact me to ask if I would consider making a true 12 port SU intake.

Coincidentally I had been thinking about dusting off the casting pattern that I inherited with the business, but had never cast...

Fast forward a few months, a couple of very minor pattern repairs, a few jigs and fixtures later and Jimmy gets his intake.

I did cast a second set at the time but it looks like they are already sold!

What do you think, should I cast more?

J4MC12PSU Holden 12 Port Triple SU intake manifold. - Sonic Injection https://share.google/LppK77GgnmZCIqMSD

https://www.facebook.com/share/p/1CuftnDtLN/

I have a couple of these left on the shelf ready to ship.Everyone that was waiting has either been notified or purchased...
03/10/2025

I have a couple of these left on the shelf ready to ship.

Everyone that was waiting has either been notified or purchased already.

Next batch will probably be January or February.

J4MC12PD Holden 12 Port Intake Manifold 4150 Holley - Sonic Injection https://share.google/CiR4abhfaVT6QfYEV

Thanks for the continued support.

Enjoy your long weekend.

It's like Christmas, but in July, or August, or whatever month we are in now.... anyway the point is, some stuff is bac...
12/08/2025

It's like Christmas, but in July, or August, or whatever month we are in now.... anyway the point is, some stuff is back in stock. 😆

Here is the first of our NEW Cam Synchroniser kits.I'd be interested in sending this out to a customer at a discounted p...
05/08/2025

Here is the first of our NEW Cam Synchroniser kits.

I'd be interested in sending this out to a customer at a discounted price for testing purposes.

This one is for a Hemi 6, Holden 6 and more versions will follow immediately after testing.

This design utilises the fuel pump eccentric as its reference and has no moving parts.

It has been tested in a simulated situation and performed exactly as expected, but has yet to see time on an engine.

Whoever can offer me feedback from testing in the shortest timeframe gets it cheap.

In the coming months I will be rebuilding the pattern for the Holden Grey intake.I have started on a rough 3d model of i...
14/06/2025

In the coming months I will be rebuilding the pattern for the Holden Grey intake.

I have started on a rough 3d model of it.

I'd be interested to know if there are any suggestions for changes that could be worthwhile.

Let me know your thoughts.

Enjoy what's left of your weekend.🙂

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Loveday, SA
5345

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