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Author Topic: Smog Pump Spacer Usage  (Read 4835 times)

ZLP955

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Smog Pump Spacer Usage
« on: May 19, 2018, 07:23:49 AM »
Did any '69 models use a spacer between the smog pump pulley and the white fan, or did all pulleys bolt right up to the fan? I've seen the spacers used on Corvette and others, but so far, not on a first-gen. Thanks!
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Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

KurtS

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Re: Smog Pump Spacer Usage
« Reply #1 on: May 21, 2018, 01:55:22 AM »
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Kurt S
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ZLP955

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Re: Smog Pump Spacer Usage
« Reply #2 on: May 21, 2018, 06:16:19 AM »
Thanks Kurt, I read that report many times but didn't see any reference to spacers.
The bolts I bought to mount the pulley are too long and I wondered if a spacer was required. Looks like I need shorter bolts then.
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Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

KurtS

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Re: Smog Pump Spacer Usage
« Reply #3 on: May 21, 2018, 03:24:55 PM »
I have some original bolts, I try to find and measure them...
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Kurt S
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ZLP955

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Re: Smog Pump Spacer Usage
« Reply #4 on: May 21, 2018, 08:44:49 PM »
Thanks!
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Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

x66 714

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Re: Smog Pump Spacer Usage
« Reply #5 on: May 21, 2018, 11:28:50 PM »
Hey Tim. Mine are 1/2" long & use lock washers. Let's see what Kurt says.....Joe
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See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

z28z11

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Re: Smog Pump Spacer Usage
« Reply #6 on: May 22, 2018, 04:18:16 AM »
Short ones are indeed 1/2" length under the head (pictured), the longer ones fit the spacer equipped models (this particular spacer came
 off a '68 dated pump). No '69 I have ever seem came with the spacer, this one came off a complete '68 assembly pump.

Regards,
Steve
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1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

ZLP955

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Re: Smog Pump Spacer Usage
« Reply #7 on: May 22, 2018, 07:18:30 AM »
Thanks for the pictures - the bolts I bought are exactly like the loose one next to the spacer in Steve's photo - longer and with an unthreaded section of shank. Good to see the correct short ones, so at least I know what I need now.
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Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway
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