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  #1  
Old 09-23-2012, 11:29 AM
hlangebro's Avatar
hlangebro hlangebro is offline
 
Join Date: Mar 2012
Location: San Diego, CA
Posts: 133
Default First engine run-up

I started the engine for the first time yesterday. The engine has around 900 hrs on it:

http://www.youtube.com/watch?v=1-RW-Kf48vc

Most of things went well, but 2 things that are puzzling me:

1. The indicated oil pressure was only 20PSI. The rpm's I ran then engine at was in between 800 and 1400.
2. This might not be so puzzling, but the machanical fuel pump did not work at all. I will remove it today and order a new one.

The electrical fuel pump was able to produce 9 PSI, and if I left it on it would flood the card and the engine would stop. That doesnt seem normal to me..or? Shouldnt the need valve be able to prevent more fuel getting into the carb?

I have the Dynon Skyview system with all the sensors that came with it. I would appreciate some input regarding the oil pressure issue. Next weekend we will try to hook on a mechanical gage, to see if there is any difference. As far as I remember I should have been able to see around 55PSI at those low rpm's...
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H?kan Langebro
San Diego, CA

RV-7A, slider
Lycoming O-320 D1A, 160hp C/S
First flight 6-11-13

Re-engineering a Lancair 320..!


http://www.youtube.com/watch?v=AJuQ68tccTQ
http://www.mykitlog.com/hlangebro/
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  #2  
Old 09-23-2012, 12:02 PM
Vlad's Avatar
Vlad Vlad is online now
 
Join Date: Oct 2008
Location: Utah
Posts: 8,441
Default

Cool rubber prop with a lot of flex. DAR might have a question
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Where is N666BK?

Не имей сто рублей, а имей сто друзей.
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  #3  
Old 09-23-2012, 02:46 PM
Rupester Rupester is offline
 
Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
Default Bleeding the OP line before start ...

If you did not bleed the air out of the oil pressure line before start, you'll not get accurate OP readings. The best way to bleed it is to remove the OP hose from the sensor manifold; then kill the mags and/or EIs, pull one plug on each cylinder, and crank the engine til oil flows out the OP hose. Then quickly reconnect it to the sensor manifold. Sometimes the process is easier with a helper.
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Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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  #4  
Old 09-24-2012, 04:37 AM
madhun madhun is offline
 
Join Date: Jun 2010
Location: Buderim, Queensland Australia
Posts: 154
Default

Congrats. I'd bet the neighbours loved you that day.
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  #5  
Old 09-24-2012, 09:53 AM
hlangebro's Avatar
hlangebro hlangebro is offline
 
Join Date: Mar 2012
Location: San Diego, CA
Posts: 133
Default Bleeding

Thanks for the advice. I will try to get that done!

It was less noisy than expected. The one guy in the movie clip that is drinkng a soda is one of my neigbors. He really onjoyed it!!
__________________
H?kan Langebro
San Diego, CA

RV-7A, slider
Lycoming O-320 D1A, 160hp C/S
First flight 6-11-13

Re-engineering a Lancair 320..!


http://www.youtube.com/watch?v=AJuQ68tccTQ
http://www.mykitlog.com/hlangebro/
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  #6  
Old 09-24-2012, 01:37 PM
PaulR PaulR is offline
 
Join Date: Oct 2005
Location: Geneva, AL
Posts: 491
Default Airbox

What mods have you done to the front of the airbox? Not familiar with the 7A but I think the cowls are the same as my 9A. Something you've modified to make removal of the cowl easier?
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Paul Rose
RV-9A 91300
N417PR
SERFI 2013 Awards
Inspection Complete!!! 7/7/12
First Flight 7/22/12
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  #7  
Old 09-24-2012, 01:48 PM
hlangebro's Avatar
hlangebro hlangebro is offline
 
Join Date: Mar 2012
Location: San Diego, CA
Posts: 133
Default Air filter box

Yes, I modified the air filter box. I do have the James cowl, but it is similar. On the cowl side I have a flat plate with an oil and fuel proof rubber pad, that meets up with the air filter box when the cowl is installed. This takes all the fiddling away when you install the lower cowl!
It is roughly angled at 45 degrees.

http://www.mykitlog.com/users/displa...g=156225&row=3

http://www.mykitlog.com/users/displa...g=156226&row=2

http://www.mykitlog.com/users/displa...g=156224&row=4
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H?kan Langebro
San Diego, CA

RV-7A, slider
Lycoming O-320 D1A, 160hp C/S
First flight 6-11-13

Re-engineering a Lancair 320..!


http://www.youtube.com/watch?v=AJuQ68tccTQ
http://www.mykitlog.com/hlangebro/
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  #8  
Old 09-25-2012, 02:33 PM
Jim F Jim F is offline
 
Join Date: Dec 2008
Location: Canby OR
Posts: 119
Default airbox

It appears that you have a gap between the bottom of the airfilter and the airbox. That could cause a lot of problems. The filter needs t o be squeezed between the bottom of the airbox and the top plate for the engine to run properly. a friend of mine had that problem and finally had to rebuild the airbox. It solved the problem.

Jim Frisbie
RV-9A
N571DF 275 hrs.
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  #9  
Old 09-25-2012, 02:55 PM
hlangebro's Avatar
hlangebro hlangebro is offline
 
Join Date: Mar 2012
Location: San Diego, CA
Posts: 133
Default AIR FILTER

No, the top and bottom of the filter is "jammed" in between the upper and lower part of the filter box, no gaps. When I trimmed the fiberglass part, I put the filter in and made sure it sealed up properly!
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H?kan Langebro
San Diego, CA

RV-7A, slider
Lycoming O-320 D1A, 160hp C/S
First flight 6-11-13

Re-engineering a Lancair 320..!


http://www.youtube.com/watch?v=AJuQ68tccTQ
http://www.mykitlog.com/hlangebro/
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