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-   -   is it an Aero-head? (http://www.advrider.com/forums/showthread.php?t=841281)

ozmoses 11-14-2012 08:36 AM

is it an Aero-head?
 
http://msn.foxsports.com/other/story...us-team-111412

Rob Farmer 11-14-2012 10:23 AM

Now this is an aero head

<iframe width="420" height="315" src="http://www.youtube.com/embed/TS5AxbQXdY4" frameborder="0" allowfullscreen></iframe>

bpeckm 11-14-2012 11:26 AM

Always fascinated that the power take-off (gearbox) is at the nose end of the engine that we all know so well..... but there are a lot of ultralights out there powered by R100 engines... makes sense, when you think about it! :evil

:D

woodly1069 11-14-2012 02:09 PM

Love it! :d

Rob Farmer 11-14-2012 02:37 PM

Quote:

Originally Posted by bpeckm (Post 20042790)
Always fascinated that the power take-off (gearbox) is at the nose end of the engine that we all know so well..... but there are a lot of ultralights out there powered by R100 engines... makes sense, when you think about it! :evil

:D

The power take offs on the rear of the engine in the video (look at the oil filler) The heads are on back to front.

Airhead Wrangler 11-14-2012 02:41 PM

Quote:

Originally Posted by bpeckm (Post 20042790)
Always fascinated that the power take-off (gearbox) is at the nose end of the engine that we all know so well.....

The one above appears to be at first glance due to the headers coming off the engine, but look closely. You can see the oil filler and timing plug on the same side of the cylinder as the headers !?!? They must've done some big time modification on that engine. That means they're using a left side head on the right side and vise versa. It also means they must've ground a custom cam to make that work. Yikes. Crazy shit.

Airhead Wrangler 11-14-2012 02:43 PM

Quote:

Originally Posted by Rob Farmer (Post 20044092)
The power take offs on the rear of the engine in the video (look at the oil filler) The heads are on back to front.

Damn. Rob beat me to the punch by 4 minutes.

Boxer Metal 11-14-2012 03:21 PM

Look at which end the exhaust is coming out of the head.

Jon-Lars 11-14-2012 05:53 PM

Quote:

Originally Posted by bmweuro (Post 20044393)
Look at which end the exhaust is coming out of the head.

???

Boxer Metal 11-14-2012 11:22 PM

Quote:

Originally Posted by Jon-Lars (Post 20045570)
???

It's coming out of the intake side.

Airhead Wrangler 11-15-2012 07:07 AM

Quote:

Originally Posted by bmweuro (Post 20047666)
It's coming out of the intake side.

Chris, what's your take on how they did this? They must be using a left head on the right side and vise versa, but they would've had to grind a custom cam to make this work, right?

Boxer Metal 11-15-2012 10:27 AM

Quote:

Originally Posted by Airhead Wrangler (Post 20049010)
Chris, what's your take on how they did this? They must be using a left head on the right side and vise versa, but they would've had to grind a custom cam to make this work, right?

I wanted to do the same thing to a motor for my chopper build so I found the company that makes a new 308 cam for the 79 motors and yes they flipped the pistons and heads left to right.

Rob Farmer 11-15-2012 10:58 AM

Theres an article here on Aero conversions. Nothing about reversing the heads though http://www.esatclear.ie/~xair/conversion.htm

US_Marshall 11-15-2012 01:31 PM

As long as the cam profile is the same for intake and exhaust, you should be able to just put the cam timing 180 out.

Airhead Wrangler 11-15-2012 01:38 PM

Quote:

Originally Posted by US_Marshall (Post 20051606)
As long as the cam profile is the same for intake and exhaust, you should be able to just put the cam timing 180 out.

MMM, no. You'd still have your intake openning for the exhaust stroke and your exhaust openning for the intake stroke. Putting it 180 degrees out won't change the sequence. That engine won't run.


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