Heli Saw Pilot
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Do you have to modify the cowling on RV8 to use?
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Airflow Performance FM200A
- Thread starter Heli Saw Pilot
- Start date
Some have squeezed it in by building a modified snorkle from the left inlet. Others modify the cowl for a horizontal intake. The easy option is an FM150 or EX-5, same length, both shorter than an FM200
cowl mod
This picture should give you an idea of what needs to be done. Click on it for more terrifying photos.
Yes. I'm doing it now, probably have 100 hours in it, mainly because I have no idea what I'm doing, and I'm quite slow. I'd recommend what Dan said - buy the FM150.
This picture should give you an idea of what needs to be done. Click on it for more terrifying photos.
Last edited:
Heli Saw Pilot
I'm New Here
Thanks
Thanks Dan and Mickey
I recently visited Barret and Ronda suggested i research the mod but she recommend the fm150 also and If Mickey has a 100 hrs in it I am sure I would have the same amount if not more.The 150 it is.
Thanks Dan and Mickey
I recently visited Barret and Ronda suggested i research the mod but she recommend the fm150 also and If Mickey has a 100 hrs in it I am sure I would have the same amount if not more.The 150 it is.
Jeff, there are some photo links here:
http://www.vansairforce.com/community/showthread.php?t=124683
The Vans snorkel can be adapted to the FM 200 without modifying the cowl. It's just glass work. Keep in mind that sometimes it's necessary to modify the snorkel a bit regardless of throttle body choice. It's the nature of the beast.
On the flow bench there is probably 0.3"~0.4" Hg difference in restriction between the FM-150 and the FM-200 at a 4-cyl's flow rate, but the difference may be less installed on the airplane, sucking through filters, ducts, and manifold adapters. I don't have those measurements. Max power is an intake straight in through the front, no filter.
I run a through-the-front filtered airbox with a huge filter, so pressure loss is minimal: http://www.vansairforce.com/community/showthread.php?t=44856&page=2
Talk to Don or Kyle at Airflow.
http://www.vansairforce.com/community/showthread.php?t=124683
The Vans snorkel can be adapted to the FM 200 without modifying the cowl. It's just glass work. Keep in mind that sometimes it's necessary to modify the snorkel a bit regardless of throttle body choice. It's the nature of the beast.
On the flow bench there is probably 0.3"~0.4" Hg difference in restriction between the FM-150 and the FM-200 at a 4-cyl's flow rate, but the difference may be less installed on the airplane, sucking through filters, ducts, and manifold adapters. I don't have those measurements. Max power is an intake straight in through the front, no filter.
I run a through-the-front filtered airbox with a huge filter, so pressure loss is minimal: http://www.vansairforce.com/community/showthread.php?t=44856&page=2
Talk to Don or Kyle at Airflow.
