B230ft Performance inlet manifold

Sorry to be negative as I like nice parts being made for volvos as much as the next guy, but I think you would be hard pressed to justify the r&d with the quantities you'd sell - think 2 or 3 per year in Aus. Given the 2kaud price tag for a manifold would be more than the cost of most of our cars, your only hope would be our shitty dollar and people in the US and Europe buying them. Even then our marquee isn't exactly renouned for spending any serious money on the platform, and when they do they are generally less chequebook racer (ie sr, rb, jz 4g etc) and more diy.

Beyond that, developing for a 8v head is probably trying to solve a problem that isn't there - the stock intake manifold isn't really a restriction until you make serious power, and then the 16v head can be swapped on for probably half the cost of a Plazmaman inlet manifold and have about a factor of 10 in performance gains compared. I'd say develop it for the 16v head but then there are even less potential customers as it is far less common.

The existing options are KL racing at about $700aud;

And a few limited runs / cast ones from overseas;

All the best, sorry to be discouraging but it is the truth in my eyes. My advice would be to develop diy kits like universal 4, 5 and 6 cylinder plenums that bolt down to a provided blank flange that customers can drill to suit their runner spacing requirements - like what Integrated Engineering, LPS and Jenvey do.

Yep, like Sam said.

Bit of a late bump for this but does any know at what power level the stock intake manifold starts to become a restriction?

Agree with Sam. Better off doing a nice turbo manifold as the log manifold is limited and the 90+ crack

GingerNinja

Bit of a late bump for this but does any know at what power level the stock intake manifold starts to become a restriction?

According to threads on Turbobricks, the standard B230FT inlet manifold is good for ~350 BHP.

There's talk of using a K-Jet inlet / plenum with a 65mm throttle body beyond that.

The 8V inlet isn't too bad; the 16V one is worse than the 8V, which is why some folks have repurposed 8V inlets for use on 16V heads.

If going ITBs then all you need is a heavy aluminium tube with injector on it onto a plate to bolt on. Turbo takes care of getting the air in. More is more.

The Plazmaman could whack on some tubes to precut plate , flanges on tubes or all pipes into a rolled sheet to make the log shape and one TB flange, cheaper that CAD and shit.

If heaps needed get made in India,Korea,China,check welds here and coat them here.

What's going on with the sharp corner on the KLR intake? Looks ok except for that.

Major Ledfoot

https://ozvolvo.org/discussion/comment/190131#Comment_190131

According to threads on Turbobricks, the standard B230FT inlet manifold is good for ~350 BHP.

There's talk of using a K-Jet inlet / plenum with a 65mm throttle body beyond that.

The 8V inlet isn't too bad; the 16V one is worse than the 8V, which is why some folks have repurposed 8V inlets for use on 16V heads.

Ok, that's decent power for that thing. I see some people think #3 goes a bit lean but I wonder if there's truth to this.

Yep, #3 is known to run a little lean at high power levels. The Group A K-Jet cars used to use a bigger injector on #3 so it evened out. With EFI, most people set their aftermarket systems to run #3 richer to compensate.