http://forums.piperowner.org/list/5 EN Mon, 12 May 2008 16:54:41 -0500 Mon, 12 May 2008 16:54:41 -0500 Modifications Phorum 5.1.25 60 http://forums.piperowner.org/read/5/60609/100157#msg-100157 SteveG
Here is another though:
http://www.pfluegers.com/]]> Modifications http://forums.piperowner.org/read/5/60609/100157#msg-100157 Mon, 12 May 2008 16:54:41 -0500 http://forums.piperowner.org/read/5/28916/100156#msg-100156 SteveG
Here is another company that does the same thing. Don't know if they're still operating though:

http://www.pfluegers.com/]]> Modifications http://forums.piperowner.org/read/5/28916/100156#msg-100156 Mon, 12 May 2008 16:52:34 -0500 http://forums.piperowner.org/read/5/28916/100149#msg-100149 Larry Stanford Aero Enhancements got out of the aircraft business.. I'm told to many headaches and not enough profit.. He's doing about the same thing in the marine line.
Your mileage may vary :)]]> Modifications http://forums.piperowner.org/read/5/28916/100149#msg-100149 Mon, 12 May 2008 14:32:46 -0500 http://forums.piperowner.org/read/5/100113/100148#msg-100148 J Fehrman
Might add that we have over 30 years experience in the high performance engine business building championship sprint car and drag motors and have been match flowing aircraft cylinders for the past three.]]> Modifications http://forums.piperowner.org/read/5/100113/100148#msg-100148 Mon, 12 May 2008 14:10:21 -0500 http://forums.piperowner.org/read/5/100113/100145#msg-100145 Martin H
One would only "de-burr" and smooth the ports or "allign" the heads with the exhaust.

Wouldn't this assist in flow ie remove constriction and obstructions?

Again, there maybe a reason to have a rough intake or exhaust.. but if that were the case, why wouldn't race car mechanics spend so much time and effort "cleaning this area" for flow and effeciency?

Adding material? I guess that would depend on the head, but THAT probably would be an obvious issue.

Martin]]> Modifications http://forums.piperowner.org/read/5/100113/100145#msg-100145 Mon, 12 May 2008 13:34:32 -0500 http://forums.piperowner.org/read/5/100113/100139#msg-100139 Rick T.
I don't think the porting and polishing is common on aircraft engines. It might be done but not recorded. The re-porting and polishing would change the original certified configuration and would require an STC.

I know that there would be improvements to Lycoming performance....also have had discussions with a Lycoming engineer reguarding allowable material to remove from intake & exhaust ports.....there isn't extra to remove. In this case, on the intake, probably would want to add material to provide a better bend radius for the flow to turn prior to entering the valves.

There are tons of improvements ideas in this area.....unfortunately I don't think any of them are permissable with the certified versions.

If you are able to go uncertified, you may want to check Superier.

Rick]]> Modifications http://forums.piperowner.org/read/5/100113/100139#msg-100139 Mon, 12 May 2008 12:29:31 -0500 http://forums.piperowner.org/read/5/28916/100138#msg-100138 SteveG
http://www.aeroenhancements.com/instrument_panels/Default.htm]]> Modifications http://forums.piperowner.org/read/5/28916/100138#msg-100138 Mon, 12 May 2008 12:14:55 -0500 http://forums.piperowner.org/read/5/60609/100137#msg-100137 SteveG Modifications http://forums.piperowner.org/read/5/60609/100137#msg-100137 Mon, 12 May 2008 12:10:55 -0500 http://forums.piperowner.org/read/5/100113/100136#msg-100136 SteveG http://www.lycon.com/]]> Modifications http://forums.piperowner.org/read/5/100113/100136#msg-100136 Mon, 12 May 2008 12:04:22 -0500 http://forums.piperowner.org/read/5/100113/100113#msg-100113 Martin H
I am trying to get some feedback regarding Airplane Engine Rebuilds vs Car Engines. As I remember, an Eon or two ago, Porting, Polishing, Balancing, Blueprinting, and matching / aligning the ports during an Engine Rebuild were viable means of easy / free horsepower. Yet, I seldom see any reference to this regarding Airplane Engines (possible exception of balancing).

Are there any Airplane Engine "Hot Rodders"? or is the FAA death on such "tinkering" or shade-tree mechanics? Are there any easy ways to do this short of a rebuild?

What are the best and cheapest ways to additional / or at least freeing the horses to a 180 and above engine? I know the Power Flow assists on the smaller and earlier engines.

Does Shaving the Heads enter into it anymore? No, I am not talking about an automotive Moil.

Thanks,

Martin]]> Modifications http://forums.piperowner.org/read/5/100113/100113#msg-100113 Mon, 12 May 2008 04:11:50 -0500 http://forums.piperowner.org/read/5/38735/100079#msg-100079 Rich
You will not pick up any more speed at the same RPM, no matter how much HP you gain. The prop is turning the same speed and likewise the airspeed will be the same.

To gain any more speed with the same RPM, you must repitch your prop.]]> Modifications http://forums.piperowner.org/read/5/38735/100079#msg-100079 Sun, 11 May 2008 11:56:11 -0500 http://forums.piperowner.org/read/5/28916/100036#msg-100036 Bayne Linden
THANKS

Piper Owner N4427T

Bayne]]> Modifications http://forums.piperowner.org/read/5/28916/100036#msg-100036 Sat, 10 May 2008 10:28:14 -0500 http://forums.piperowner.org/read/5/38735/100021#msg-100021 Jim Wells Modifications http://forums.piperowner.org/read/5/38735/100021#msg-100021 Fri, 09 May 2008 19:26:46 -0500 http://forums.piperowner.org/read/5/60609/99964#msg-99964 Mike M Modifications http://forums.piperowner.org/read/5/60609/99964#msg-99964 Thu, 08 May 2008 18:18:13 -0500 http://forums.piperowner.org/read/5/58046/99832#msg-99832 Tom Modifications http://forums.piperowner.org/read/5/58046/99832#msg-99832 Tue, 06 May 2008 06:27:46 -0500 http://forums.piperowner.org/read/5/88682/99823#msg-99823 flyguydon
I think after the election the whole boondoggle of subsidized ethanol production may finally fix the realities of what ethanol really is. I hope so.

Agreed though, there are areas of the country where it is almost (if not) impossible to get pure gasoline.

It is easy to test for and only takes a very small amount of fuel to do the test.]]> Modifications http://forums.piperowner.org/read/5/88682/99823#msg-99823 Mon, 05 May 2008 21:44:18 -0500 http://forums.piperowner.org/read/5/88682/99803#msg-99803 Gary Schwartz
Some suppliers do not label the ethanol as they are supposed to. Know who you are buying motor gas for aviation use from.
Gary]]> Modifications http://forums.piperowner.org/read/5/88682/99803#msg-99803 Mon, 05 May 2008 16:04:44 -0500 http://forums.piperowner.org/read/5/58046/99782#msg-99782 SingForSupper
There would only be two persons in the plane and I would not only remove the rear bench seat for the fuel bladder, but would remove seats 3 and 4 replacing one with a port-a-potty and the other as space for safety gear. This would leave a little space for a couple of bags of luggage in the front or rear compartments (according to the dimensions of the turtlepac bladders).

Would this actually work? Would I get 337 approval? Am I totally off base for asking?]]> Modifications http://forums.piperowner.org/read/5/58046/99782#msg-99782 Mon, 05 May 2008 13:15:49 -0500 http://forums.piperowner.org/read/5/99556/99635#msg-99635 Steve M
Thanks!]]> Modifications http://forums.piperowner.org/read/5/99556/99635#msg-99635 Fri, 02 May 2008 14:59:08 -0500 http://forums.piperowner.org/read/5/99556/99624#msg-99624 Jim T Modifications http://forums.piperowner.org/read/5/99556/99624#msg-99624 Fri, 02 May 2008 09:40:13 -0500 http://forums.piperowner.org/read/5/99556/99614#msg-99614 Steve M
At aircraft spruce

Aerox 4 place - $636
MH 2 Place - $1035

They push this pulse demand idea. I don't know the details, but I'm going to be at best an irregular user so I'd prefer a less costly unit.]]> Modifications http://forums.piperowner.org/read/5/99556/99614#msg-99614 Fri, 02 May 2008 05:37:35 -0500 http://forums.piperowner.org/read/5/99556/99606#msg-99606 Bill
Bill]]> Modifications http://forums.piperowner.org/read/5/99556/99606#msg-99606 Thu, 01 May 2008 20:44:57 -0500 http://forums.piperowner.org/read/5/99556/99605#msg-99605 jjair I have a built-in oxygen system, but the portables from Aerox and Mountain High are very good. The cannulas that you can adjust and that have a flow meter will save the oxygen and give you the correct dose at altitude.

The oxygen altitudes are not just those mandated by the FAA, if you are getting a headache or lightheaded at 8,000 or 10,000 feet, oxygen will help. If you are flying IFR and need to be sharp at the end, the oxygen will help. The higher altitudes are usually smoother and cooler, but in our little aircraft we rarely will ever "get above" the bad weather.]]> Modifications http://forums.piperowner.org/read/5/99556/99605#msg-99605 Thu, 01 May 2008 20:30:59 -0500 http://forums.piperowner.org/read/5/99556/99583#msg-99583 Steve M
Any recommendations on portable O2 systems? Do you use those little O2 meter thingies that you use to check blood O2?]]> Modifications http://forums.piperowner.org/read/5/99556/99583#msg-99583 Thu, 01 May 2008 10:34:24 -0500 http://forums.piperowner.org/read/5/99556/99568#msg-99568 Bill
Bill
Green Bay, WI]]> Modifications http://forums.piperowner.org/read/5/99556/99568#msg-99568 Wed, 30 Apr 2008 22:19:48 -0500 http://forums.piperowner.org/read/5/99556/99559#msg-99559 jjair I have a 1981 Turbo Arrow IV and live in Florida. Most of the time we fly up at 10,000 to 12,000 feet. This is mostly to get above bumps and into cooler temps. I see about 160 knots at 12K running 2450 RPM and 32 inches of maifold pressure with a fuel flow of about 13 GPH. The turbo has not been a big maintanence item, although we do have the intercooler installed so the CHTs and TITs are typically low. We also try to change the oil every 25 hours, it is the life of the turbocharger. Oxygen is needed at those altitudes, you will get a headache and lightheaded if you stay at 12,000 feet too long. I would not go back to a normally aspirated aircraft, the turbo gives you speed at altitude and gets you up into better weather. It is the same speed as a non-turbo below 5,000 feet.]]> Modifications http://forums.piperowner.org/read/5/99556/99559#msg-99559 Wed, 30 Apr 2008 20:36:53 -0500 http://forums.piperowner.org/read/5/99556/99556#msg-99556 Rodger I realize the turbo is for getting over those pesky mountains but I live in flat lands and looking truly for long distance speed not high FL.
Thanks,
Scott]]> Modifications http://forums.piperowner.org/read/5/99556/99556#msg-99556 Wed, 30 Apr 2008 18:54:47 -0500 http://forums.piperowner.org/read/5/83635/99496#msg-99496 cgjwr -------------------------------------------------------
> Hi,
> I see that Microair now have a VG kit for
> Saratogas. Just wondered if anyone had fitted
> them as yet and what opinions they might have of
> the results.
>
> Cheers
> Rob

Bump I'm curious as well.]]> Modifications http://forums.piperowner.org/read/5/83635/99496#msg-99496 Tue, 29 Apr 2008 11:37:57 -0500 http://forums.piperowner.org/read/5/98987/99449#msg-99449 Matt Modifications http://forums.piperowner.org/read/5/98987/99449#msg-99449 Mon, 28 Apr 2008 19:54:24 -0500 http://forums.piperowner.org/read/5/98987/99428#msg-99428 Sac Arrow Modifications http://forums.piperowner.org/read/5/98987/99428#msg-99428 Mon, 28 Apr 2008 12:45:27 -0500