RV10 Lycoming Exp/Thunderbolt 540 pre-order options

[dmattmul]

EFII and SDS require fuel return lines. Order your Andair duplex FS2020 fuel selector valve with AN6 90’s early as Andair can take up to 9 months to send you the valve. You’ll probably also need a valve extension from Andair.

[jerseypilot83]

Yes I was told about lead times. Things are crazy now post COVID:-( The website is saying up to 200hp for the FS2020 selector?? Is the electronic version any better than the manual selector?

[dmattmul]

The electric version of the FS2020 from what I know has the same plumbing. I looked at getting it but decided I’d hate to have a failure and not be able to switch tanks or worse stick in between the switchover some way ??

If they would have had it 4 years ago when I ordered my valve for the 10 the 2520 with AN8 inlets I would have considered that. I’ve worked on a Cirrus that used this and looked nice. It also used banjo fittings in the supply line. I’m not sure if that was part of the reason to use AN8 lines. I would not have used banjo fittings in the supply side. Pressure drop is fairly large. Going to AN8 supply lines you will find like all “neat” ideas adds considerable time to the project. One offs are a real time suck.

[Shays]

Originally Posted by jimbom

What is the difference in horsepower between the 8.5:1 and 9:1 compression ratios?

~ 5 Horse Power difference on the Thunderbolt IO540

[KatanaPilot]

Originally Posted by jerseypilot83

Hello All:

I have ordered my Thunderbolt IO540 just after Christmas this year. Lead time is 24 months so I have some time. I have a couple questions.

I went with AFP, EIS, standard compression so I can use 94UL, and I went with 2 tone paint scheme.

Does my TB require fuel return lines because I ordered fuel bungs from flyefii. I just wanted to know.

Any links or assistance to knowing what I will need additional to the engine be greatly be appreciated.

Standard fuel injection does not require return lines. Did you not install them when you built your ER tanks?

[ewumnrr]

Originally Posted by jerseypilot83

Yes I was told about lead times. Things are crazy now post COVID:-( The website is saying up to 200hp for the FS2020 selector?? Is the electronic version any better than the manual selector?

Ignore the 200hp limit. You can get some 80 gph through, more than enough.

[ewumnrr]

Originally Posted by KatanaPilot

Standard fuel injection does not require return lines. Did you not install them when you built your ER tanks?

Some people install a purge valve to make hot starts easier. In that case, you would need one return port with the stock injection (and the standard single lane valve).