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  #1  
Old 07-25-2000, 12:49 PM
JOE.C JOE.C is offline
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Join Date: Jul 16, 2000
Posts: 75
Question

are the air injection tubes necessary for peak performance or are they just for emissions, there are no emission tests for vehicles over 15 yrs old in massachusetts so what if i just stick the banjo bolts back in will that be okay or i have to rebuild the old ones, new ones cost 58.00 + shipping , thanks for the help.
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  #2  
Old 07-25-2000, 04:41 PM
River Beast River Beast is offline
 
Join Date: Apr 18, 2000
Location: Lakewood, Calif
Posts: 11,642
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Rip 'em outta there!!! Find some short bolts that will thread into the holes and seal 'em up... all will be fine. IF you still have the rest of the smog crap on there rip it off,too.. like the air pump and the anti-backfire valve. My pump never worked from the get-go. Leas drag on the motor without the air pump, too.

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TJ
78 Wagoneer "River Beast"
360/TH400/QT
Dana 44's (soon to be 4.88's)
7" SOA conversion
4" Skyjacker Softride
3" Trailmaster Bodylift
33x12.50's on 15x10's
(soon 38.5x14.50's on 12's)
My FSJ site: http://www.geocities.com/~spazz4life
"Where there's a hill...there's a way!"
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  #3  
Old 07-26-2000, 06:46 AM
lanierboy lanierboy is offline
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Join Date: Apr 25, 2000
Location: Buford, Georgia, USA
Posts: 339
Cool

I pulled mine off and stuck some 9/16 fine thread bolts in their place. Unfortunately, the shortest ones I could find at the local hardware store were 1" but, they are doing fine. Or at least fine on the passenger side. On the drivers side, the banjo bolts all sheard. I attempted to remove one with a 1/4" bolt extractor but is broke and the extractor is doubling as a plug. Still a little exhaust gets by, but not too much. For the other to sheard banjo bolts on the drivers side, I tapped them out and screwed in a 5/16 bolt. One of these days I'll attempt to pull out the manifold and drill out the old banjo bolts but that's a job I'm not ready to tackle at this time.

Good Luck.
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  #4  
Old 07-28-2000, 06:33 PM
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irbob irbob is offline
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Join Date: Apr 11, 2000
Location: Huachuca City, AZ 85616
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Cool

We don't have emissions here(yet) but I can see it coming a mile away so better safe than sorry, I'll keep mine together.

Granddad has all his out. The engine bay is less cluttered and looks better. I couldn't guess on how much performance is gained with all that removed. Probly not much. My Waggy Brougham goes when I hit the gas.

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  #5  
Old 07-29-2000, 03:15 PM
TPIGUY TPIGUY is offline
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Join Date: Jul 22, 2000
Location: Columbus, GA, USA
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Joe C.

The air injection tubes are there strictly for emissions. They are used to inject oxygen into the exhaust stream so the catalytic converter can "burn" off the excess hydrocarbons created with a rich mixture during warmup. Once the engine warms up, the air is diverted to the atmosphere or on late model cars, to the catalytic convertors second stage. Modern fuel injection systems control this system via commands from the computer. The pre-computer systems handled everything with vacuum operated temperature switches. You can take them out and it won't harm performance at least after the engine warms up.
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