Yes I have the HIO-360-C1A fitted to my RV 6
It can be done with relative ease there are two main mods that are needed and a few other minor ones.
My engine mount is a dynafocal type 2 The cross bar at the back of the engine stops the throttle body from being mounted.. The sump has been cast with the provision of allowing a front mounted throttle body, you just have to machine out the opening to allow the adapter from the rear opening to fit. Then add some studs and just bolt on the throttle body. A couple of minor mods to do with routing the mixture and throttle cables. I made a ¼ inch thick aluminum plate which left long studs, So I mounted the cable holders on these. I found the snorkel the best option for the air feed but had to modify that slightly to fit, it was not a biggy.
RocketBob you are almost right the engine won’t fit under the cowl. I got around this by installing “Power bumps” on the cowl, the top corner of the front two cylinders (1 and 2) need a bit of room to move around especially on start so my power bumps are just big enough to allow this to happen. My baffle rubber fits over and in them and makes a good seal
http://www.vansairforce.com/communit...ad.php?t=80458 This is my beast and if you look closely at the cowl you can just make out my “power bumps” The 200HP is a bit tongue in cheek. The manual says the C series is good for 205 HP @ 2900. I have red lined mine at 2700 rpm which reduces (according to the good book around 195HP but with electronic mags we have guessed it will be somewhere close to the 200) (That decal was put on to make me better than my mate’s RV7 with the O-360 (180HP) which incidentally we have found our performance to be very similar)
I have a Catto prop fitted
What can I do
At 7000 feet (DA) 2700rpm (takes half a minute or so to get there) 180Knots TAS (VNE) fuel burn a glorious 12 usgals/hr.
At 7000 (DA) 2350 rpm gives me 155knts TAS (VMO) fuel burn of 7 gals /hr
At 7000 (DA) 2250 rpm gives me 145kts TAS fuel burn of 6 gals /hr
So with fuel down here at about $9.52 per gallon I usually cruse around at 145Kts
If you have any questions feel free to ask
Regards
Bruce