Vf27 Turbo info

[Green Machine]

Hey guys, So im after abit of information as I can find almost nothing about the vf27 turbo other than that it is the secondary turbo on a legacy and that it flows(420cfm at 18psi)

Now im after a turbo for a honda im building. Engine im running is a 2.3L from an odyssey which can only rev safely to around 7k rpms. Its a stock block build with 8.8:1 compression and im looking for around 180kw so dont need a massive turbo.

So does anyone have any information about the vf27 and how much power people typically make with them? Any information would be great. Going off the chart im looking at the vf24 only flows 425cfm at 18psi.

Thanks

[Guest]

One thing with honda is no engine performs as well as them. If youre running a vtec head on a 2.3 and turboing it will be a serious weapon and need the right turbo probably relatively big. I dont know but I think big compressor and big exhaust housing is reqd to make them perform or it would become a choke point?

I know there is a local integra turbo making 240kw ish but unsure exactly what engine/turbo is in it. A customer is doing a mini project K24A turbo running a CRV 4wd driveline. Apparently its quite a common mod in the states I just cant think of the website that sells all the subframes etc.

Isnt 180kw only slightly more than what it would make tuned anyway if running high comp internals n/a which would make it all a whole lot easier?

VF27 is a turbo out of a TT legacy I wouldnt take that 420cfm as accurate until someone knowledgeable can confirm it.

[Green Machine]

I could make 180kw na on that engine running k20a pistons in it which would bump the static compression to I think 12.5:1 but I have opted to go down the turbo route because its easier to throw another stock block in when it goes bang than to rebuild a new engine and due to the nature of the engine having long stroke reving it high as an na engine all the time will cause it to have a short shelf life anyway.

Suppose I should just spend a little extra and get a decent wrx turbo. Not like its going to cost much more in the scheme of things anyway. Im just a cheapo when it comes to buying parts to get the overall cost of a build down.

Cheers

[marc]

VF27 will be a waste of time. I have done several honda\'s over the years. VF24 will be very responsive and pull well all round with no problems for your power target and then some..

[Jord]

The up and down pipe flanges aren\'t the standard Subaru flanges either so will probably cause extra headache when making an exhaust to suit.

[Marky]

VF27 is tiny - its like a TD03 off a legnum in size, don\'t even try it

[Green Machine]

Cheers guys, Thought that might be the case. Went with a TD05.