IO-390 from a IO-360A1B6

[AKMac]

Hello, long time lurker wanting to build an RV-14.

I was just wondering if anyone has built a IO-390 using an IO-360A1B6 as a core?

At nearly $40k for a IO-390, I'm wondering if I can get the costs down to something reasonable. Even if the cylinders are $4k a piece, I still would be around $21k-$25k for a total engine.

[Mike H]

Try calling Barrett. They may be the best resource for a possible conversion.
http://www.bpaengines.com/

[M McGraw]

Originally Posted by AKMac

Hello, long time lurker wanting to build an RV-14.

I was just wondering if anyone has built a IO-390 using an IO-360A1B6 as a core?

At nearly $40k for a IO-390, I'm wondering if I can get the costs down to something reasonable. Even if the cylinders are $4k a piece, I still would be around $21k-$25k for a total engine.

I bought an IO-390 through Van for well less than 40K. Lycoming offers a discount at Sun-n-Fun and OSH then an additional discount if you buy the prop at the same time. I can't remember the exact price, but it was less than an IO-360.

[DanH]

Originally Posted by Mike H

Try calling Barrett. They may be the best resource for a possible conversion.
http://www.bpaengines.com/

Yep. They invented the 390 by doing as you describe...580 cylinders on a 360 core.

[Mike S]

Mac, welcome aboard the good ship VAF

[380mxc]

Mac,

You may find this previous post informative.

http://www.vansairforce.com/communit...highlight=a1b6

[AKMac]

Thanks guys.

I guess the propeller governor being in the wrong location would be a no go! I will contact barrett and see what they say.

I'm just joking here, but I think it would almost be less expensive to buy some machining equipment and build my own engine.

[F1R]

Lycoming builds IO -390 variants with the governor in both acc case and the front locations.

The factory Lyc comes with roller lifters and cam to match.

[6 Gun]

I'm running an angle valve IO-360 C1E6 with gov in front on RV6.
Bob