Idea for better FMIC plumbing

**sambb** · 17-07-2018, 09:21 PM

ok thanks Gary. I'd read long ago of people having dramas when they couldn't properly bleed the systems, lots of the systems have pressure caps on them and also due to the possibility that the fluid temp could get up, so assumed that they had to be pressurised.
So what you are saying re E85 is that because you can run so much advance that combustion temps and EGT's run that much lower than petrol at a same relative (for the fuel) state of tune that you can see 10 degree cooler water temps. wow. E85 sounds like the way.

Thanks Redliner I'll check out those links. I reckon it's be pretty straightforward to run a water to air core where the stock one is Simon as you'd still have a shorter inlet tract than any other air to air setup and can save on $/effort designing pipework as its all there for you. For me If I do do it I'd really like to give it a shot using a passenger side feed inlet manifold for the shortest possible inlet tract. Just from a maintenance/servicability point of view having it all right there and accessible with the DV plumbing, sensor wiring right in front of you and the weight as far back as you can get it (not sure how low I can get it though) is attractive.

**sambb** · 17-07-2018, 11:58 PM

Idea for better FMIC plumbing-1-8t-w2a-jpg

Idea for better FMIC plumbing-1-8t-w2a-2-jpg

The second pic looks like it has the S3 passenger side feed inlet manifold. I can see one problem being that the compressor exit has to get over the top of the TIP. The TIP including a MAF is kind of locked into its position and forces the core forward. It could be that these cores are much bigger than I'd need since they are on a big turbo group and I doubt i'll ever run >300hp, so maybe I'd have a bit more room at my disposal. The other option might be to run a flat core like this one below. Obviously different engine layout but a flat core standing vertically above the gearbox might leave enough room for airbox/pod and keep a bit of the weight low too.

Now that I think about it the most compact system (not for inlet tract length though) would be to run a W2A core where the stock side mount is and the exchanger would sit at the same height as the core across the span of the lower grille = short fluid hose runs and then plenty of room for extra capacity in an engine bay header tank (for me at least) where the battery/airbox used to be.

**Sydneykid** · 19-07-2018, 09:32 AM

This is the style of air to water I/C system that I'd choose under the bonnet. Well thought out and nicely executed. Makes full use of the A2W I/C advantages, short inlet system, can be pressurised if necessary, has the header/filler high up close by the I/C, the blow off valve is located close by the throttle body, etc. What does the rest of the system look like? Is it a sealed system or does it have an ice box? What's the heat exchanger like? I take it that they remove the LHS headlight for competition use for air inlet purposes?

Cheers
Gary

**sambb** · 19-07-2018, 11:08 AM

Its bit of an exercise to remove a headlight - whole front apron has to come off. I'd probably partition my pod and run an air feed to it from below the headlight where you can get a cold air feed from. Don't have pics of the heat exchanger location. I imagine you'd want to site it in front of the main radiator fan if possible yeah?
I'll have the inlet manifold that is in the other pic that unfortunately puts the throttle body at an angle so think my pipe runs would have to be more like his.

**Sydneykid** · 19-07-2018, 01:43 PM

Zeus fasteners on the headlight

I'd probably stick the heat exchanger between the fan and the radiator, that would avoid the fan having to suck air through the heat exchange and then blow it through the radiator. Much of muchness I'd say.

I wouldn't (fixing Trumpism) worry too much about the angle, 150 degrees versus 120 degrees, not really an issue. You could mill the throttle body plate offset to reduce the angle or cut it off and reweld it on at a more friendly angle.

Cheers
Gary

**simon k** · 19-07-2018, 02:53 PM

Originally Posted by Sydneykid

I would worry too much about the angle, 150 degrees versus 120 degrees, not really an issue.

you aren't related to Donald Trump are you?

**sambb** · 19-07-2018, 03:52 PM

You know what, I wonder if you were to re-locate the coolant reservoir to the opposite side of the engine bay, and ran a flat W2A core up against the firewall between the compressor outlet and the drivers side strut top, I think there is enough height above the cam cover to do it. The inlet pipe could then run down where the DV pipe and coolant reservoir were in this pic and you could retain the stock mani.

here's some another passenger side example: