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Friday, October 29, 2010

327 - HOME RUN! Our 1963 327 FI Corvette Engine Sounds Awesome!

After weeks of frustration we finally got our 1963 327 fuel injected engine to run on its own.  We are extremely excited and we love the way it sounds.  It's awesome!

ORIGINAL FOOTAGE OF THE FIRST SUCCESSFUL START
video


ADDITIONAL FOOTAGE
video

Note:  I wasn't able to download the audio file mentioned in the second video.  This blog does not accept that audio file type.

MYSTERY SOLVED - IT WAS THE HIGH PRESSURE FUEL PUMP

I spoke with Gary Hodges yesterday.  Gary is one of just a few people that really know how these mechanical fuel injection units work.  Gary has been dealing with these units for the last 40 years.  Gary sells FI parts and his web page is  http://www.garyhodgesramjet.com/2001.html


I discussed the high pressure fuel pump with Gary and he recommended that I scribe all three main housing pieces before I take the pump apart.  Ty is scribing the fuel pump in this photo. 

Double click on this picture to see the scribe lines.  It's important.

Now, take note of the tiny hole on the end cap near the center of the pump.

This tiny hole is located on the high pressure side of the pump and it shouldn't be there.  When the pump is running the fuel escapes through this hole and goes back into the fuel bowl, not to the injectors.  The end cap had been installed 180 degrees out of position.


This is the correct orientation.  The vent hole is now on the atmosphere side of the pump.  We verified this by examining a picture of an original fuel pump found on Jerry Bramlett's web page.  Check it out here http://www.jerrybramlett.net/museum.html


Note the missing scribe line on the cap.

It's on the opposite side now.  The pump is now assembled properly.

Time to reassemble.

Everything lined up perfectly.

We hooked up the spider and gave the pump a test.  OMG!  We could have drowned in all that fuel!

We were running the drill motor on the lowest speed possible.  Fuel was gushing out like never seen before.  Whoo hoo!


So, what happened next?  Why we grabbed our spouses and celebrated with a little bubbly of course!  Check it out:
video

Thanks for watching.

7 comments:

  1. John and all
    congratulations, persitance makes the master,
    sounds absolutely fantastic. I'm glad it turned out to be something simple. I will pay great vigilance on my assembly now I know the tricks,thanks.
    Strangley enough I was speaking to Gary via email yesterday too,Small world considering where I am ...once again ...AWESOME JOB

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  2. Thanks Pete. It sounds fantastic and I am so excited I can't sleep. It's 2:20 a.m. Saturday morning and I am sitting here waiting for the sun to come up so I can start it up again. It feels like Christmas. Wait... Did I just hear sleigh bells?

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  3. Hey John
    stupid question time, has the cam been run in yet, i.e did they ever do that when it was built, or is that your job?

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  4. Pete,
    I intend to run the engine between 2800 and 3600 RPM for about 20 minutes. After that I’ll check the lashing while the engine is hot then change the oil. I believe the lifters should be OK after that. Anything else needed?

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  5. John
    some run in additive in the oil, engines need there zinc to grow up big and strong too.
    Thats about all I have heard
    why so high with the revs, most run around 2000 to 2500. ?
    just asking no other reason

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  6. Pete,
    The RPM I quoted may be a little high. The intent is to make sure oil is always being splashed on the cam. I'll vary the rpm which should change the rotation speed of the lifters and that should assure a uniform break-in. That's my thought anyway. Zinc additive is already in the oil.

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  7. Sounds like a plan
    hmmm, that should sound very awesome !!!
    weekend job, or weekday, how well do you get along with the neighboours ? :) Only joking, have fun, you worked hard enough to get some.
    Cheers

    ReplyDelete