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1963 Fuel injection woes

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Old 06-01-2012, 10:01 PM   #61
genejockey
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It is a bit scary to see how much info and opinion surrounds Rochester FI systems. My unit is at DeGregory's for refurbishing. In taking it off of the engine I was surprised to find that I had to remove the FI unit to get the valve covers (cast aluminum) off since the FI legs overlap. Seems like a design flaw. If you want to set the valve lash, you have to remove the FI!
Anticipating getting my FI unit back, I'll need new gaskets. Who makes/sells good ones? The lowest level gaskets on my engine are a sexy blue.
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Old 06-01-2012, 10:23 PM   #62
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It is a bit scary to see how much info and opinion surrounds Rochester FI systems.
This is the golden age of Rochester FI.

More is known about these units now than at any other in their existence. Also, the reproduction and replacement parts currently available are far higher quality than what GM used to produce.

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My unit is at DeGregory's for refurbishing
.

John is a good man. He'll take very good care of your FI unit.

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I was surprised to find that I had to remove the FI unit to get the valve covers (cast aluminum) off since the FI legs overlap. Seems like a design flaw. If you want to set the valve lash, you have to remove the FI!
True and not true. If the bottom of the piezometer ring and of the venturi cone ring are ground flat, it becomes possible to remove the driver's side valve cover.

Jim
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Old 06-02-2012, 12:12 AM   #63
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On the fuelie. Did the factory recommend setting lash while running, like the carbed solid lifter motors?

Last edited by MiguelsC2; 06-02-2012 at 01:51 AM.
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Old 06-02-2012, 10:26 AM   #64
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Originally Posted by jim lockwood View Post
This is the golden age of Rochester FI.

More is known about these units now than at any other in their existence. Also, the reproduction and replacement parts currently available are far higher quality than what GM used to produce.


True and not true. If the bottom of the piezometer ring and of the venturi cone ring are ground flat, it becomes possible to remove the driver's side valve cover.

Jim
tis a shame that it is no longer the golden age of gasoline.....

at the most all you would have to do is to remove the air meter from the plenum: 4 nuts.

my memory is now fuzzy, but you might only have to remove the piezometer ring
Bill
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Old 06-02-2012, 11:08 AM   #65
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Quote:
Originally Posted by jim lockwood View Post
This is the golden age of Rochester FI.

More is known about these units now than at any other in their existence. Also, the reproduction and replacement parts currently available are far higher quality than what GM used to produce.
.

True and not true. If the bottom of the piezometer ring and of the venturi cone ring are ground flat, it becomes possible to remove the driver's side valve cover.
Jim
...........just remove the ring, not the whole unit, don't 'GRIND' any thing

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On the fuelie. Did the factory recommend setting lash while running, like the carbed solid lifter motors?
..........I set mine cold
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Old 06-02-2012, 01:52 PM   #66
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...........just remove the ring, not the whole unit, don't 'GRIND' any thing
Just to be clear, I don't advocate grinding off the bottom of the ring. It was, however, a common modification back in the day. It is a way to get valve cover clearance.

I'm not entirely sure I'd even recommend a do-it-ur-selfer remove the piezometer ring. I've just seen too many creative ways an FI unit can be screwed up by well-meaning but inexperienced tinkerers.

Jim
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Old 06-03-2012, 07:57 AM   #67
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pull the whole air meter then...
Bill
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Old 06-03-2012, 12:35 PM   #68
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On the fuelie. Did the factory recommend setting lash while running, like the carbed solid lifter motors?
Yes. Same engine, same cam, same procedure in the Shop Manual.
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