Butters

I got the ARC M079 due to the space constraint. Been running mint for the last 3 years. Plazmaman also seems like a really solid choice but not used myself. Hunt around for a better price but this is what I have - https://www.rhdjapan.com/arc-brazing-intercooler-smic-m079-bnr32.html

Maybe been mentioned but I would have thought with a straight gate you would have to run both ports. As you don't have the natural pressure to push it open. I just noticed in the pic you are only running the top port, which will keep it closed but the bottom port should push it open ?

Let me know if this isn't good enough

How does it sound with the AES open ? Like a full open exhaust or a bit more half and half ?

@Lithium any chance of adding the turbosmart 7275 ? https://830533.app.netsuite.com/core/media/media.nl?id=29183737&c=830533&h=4jX7ZZ_NUC9RHMz71QefkkIJU00LZo05Gi3wLi63DizgT3ZD&_xt=.pdf Sorry if its on there already and I am blind ....

Both heads will be equally reliable or unreliable depending on what you do to them. Stock the RB26 head will flow more. You have access to the stock intake ITB manifold on the RB26 cheaply which flows really well(1000hp+). Arguably more aftermarket support for RB26, though in Aus we love our RB30 SOHC heads too. The only downsides to the RB26 head is if you have a VL commodore and want to keep the SOHC look. Where you may have an issue is drilling out the rb30 block for the bigger head studs but if you are building a big power motor you'd probably put bigger studs on the SOHC head too. This is just about finding a good machine shop, sometimes easier said than done. RB30 head worked can make big power just like a Rb26 head, so really it actually more comes down to what your preference is for your car. People now even making billet versions of both.

Yer I did look at that, looks heaps better. I couldn't see it had a divided T4 rear option and likely land $5.5-$6k aud. The G40 is on sale at the moment for $4k flat.

@Lithium looking for a turbo for my Rb30. Want to make sure I understand this correctly. If I want to stay 40psi or under my best choice of these 3 is actually the smaller G40-1150 ?

hrmmm , not mine , easter plans to pull engine not happening

Given you already have the engine cross member to match and likely gearbox mount to. The SR20 has a head start on the RB in this case. They handle GREAT with an SR20, lots of fun. One I did back in the day

Realised I never posted this , also I never got a price

https://www.nengun.com/hks/valcon-rb26-v-cam-system no controller but most will use ECU to control anyhow

Very happy with mine and I think you will be hard pressed to find someone that isn't happy after installing. Is it the best value for money vs other mods (eg 2.8 stroker) hard to say. If you are building an all out power motor above 1000hp+++, it's probably not for you as you will want bigger cams.

Tried them, they leaked. I also foolishly bought some random rubber ones that leaked too. Genuine and not looked back. As always though sample size of one, and I could have made a mistake installing them.

these guys recommended to me and supplied custom 4 inch mufflers, couldn't be happier. They will spec a muffler to your preferred level of sound and know RB's well. https://spmufflers.com.au/