[FC] Tire Equivalent
dan@proseverse.com
dan at proseverse.com
Sat Sep 1 16:44:24 EDT 2012
Replacing tires on a 63 convertible for a friend. Difficult to get 185/80/13. Any suggestions for a contemporary equivalent.
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From: corvanatics-request at corvair.org
To: <corvanatics at corvair.org>
Subject: Corvanatics Digest, Vol 91, Issue 12
Date: Thu, Aug 30, 2012 9:00 AM
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Today's Topics:
1. Vacuum advance issue - (Jeff Brylow)
2. Jay Leno on the 2012 convention blog (Vairtec Corporation)
3. Re: Vacuum advance issue - (Mikeamauro at aol.com)
4. Re: Vacuum advance issue - (N2VZD at aol.com)
5. Re: Vacuum advance issue - (Bruce Gwyther)
----------------------------------------------------------------------
Message: 1
Date: Wed, 29 Aug 2012 13:11:08 -0400
From: Jeff Brylow <jeffbrylow at gmail.com>
Subject: [FC] Vacuum advance issue -
To: corvanatics at corvair.org
Message-ID:
<CAKR9_ve=iSn1XB2yQpws3Fz=hLFJt4nns9bCRuHc5Zt7sMXq_Q at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Folks - First issue - I've been attempting to dial in the engine in my '64
Greenbrier for some time now and have an issue that has me stumped. Quite
simply the vacuum advance seems to be performing too well! I'm experiencing
hesitation on take off and I believe excess spark advance may be the issue.
With the vacuum line disconnected, as is called for during the normal
timing procedure, I can time the engine, vehicle in drive, right at 13
btdc. Then when I hook up the vacuum advance line from the carb, I
immediately get at least 10 degrees of advance at idle. I've tried three
different advance units all with the same results.
Some facts to help with any offers of help -
Engine code- "ZB" '61 - '62 80 hp
carb codes - left bank 7020101 / right bank 7019110
distributor - # 1110272 / vacuum advance #951
head # 3786588.
Second issue (related to first issue?) - I'm only seeing 5-7 in. hg at the
carbs with my vaccum gauge and the truck actually seems to run quite well
here. This is with the curb idle set at 1-1/2 turns in per factory setting.
Many sources state we should see 14-18 in hg.
..
Third issue (question) - I ran a compression test recently - results as
follows - #1 - 140# , #2- 145# , #3 - 142# , #4 - 141# , #5 - 157# , #6 -
140#. These numbers seem a bit high to me. Are these numbers normal for a
80 hp. engine?
Thanks,
Jeff B. - Wisconsin
'64 Monza sedan
'64 Greenbrier
'62 Greenbrier Deluxe (running parts car)
------------------------------
Message: 2
Date: Wed, 29 Aug 2012 13:39:24 -0400
From: Vairtec Corporation <Vairtec at optonline.net>
Subject: [FC] Jay Leno on the 2012 convention blog
To: VV <virtualvairs at corvair.org>, "fastvair at yahoogroups.com"
<fastvair at yahoogroups.com>, "corvanatics at corvair.org"
<corvanatics at corvair.org>
Message-ID: <503E53CC.6020901 at optonline.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jay Leno's greeting to the 2012 CORSA Convention is now available for
viewing on the convention blog:
http://corsa2012.blogspot.com/
------------------------------
Message: 3
Date: Wed, 29 Aug 2012 14:49:46 -0400 (EDT)
From: Mikeamauro at aol.com
Subject: Re: [FC] Vacuum advance issue -
To: jeffbrylow at gmail.com, corvanatics at corvair.org
Message-ID: <137de6.3d88d2d2.3d6fbe4a at aol.com>
Content-Type: text/plain; charset="US-ASCII"
"...Then when I hook up the vacuum advance line from the carb, I
immediately get at least 10 degrees of advance at idle..."
Sounds like you not connected to the ported vacuum... you should be (this
connection at carb has no vacuum signal at idle), or the idle adjustment is
set too high (simulating an off-idle condition, and thus vacuum is present
at ported, port).
Mike Mauro
In a message dated 8/29/2012 1:11:16 P.M. Eastern Daylight Time,
jeffbrylow at gmail.com writes:
Folks - First issue - I've been attempting to dial in the engine in my '64
Greenbrier for some time now and have an issue that has me stumped. Quite
simply the vacuum advance seems to be performing too well! I'm experiencing
hesitation on take off and I believe excess spark advance may be the issue.
With the vacuum line disconnected, as is called for during the normal
timing procedure, I can time the engine, vehicle in drive, right at 13
btdc. Then when I hook up the vacuum advance line from the carb, I
immediately get at least 10 degrees of advance at idle. I've tried three
different advance units all with the same results.
Some facts to help with any offers of help -
Engine code- "ZB" '61 - '62 80 hp
carb codes - left bank 7020101 / right bank 7019110
distributor - # 1110272 / vacuum advance #951
head # 3786588.
Second issue (related to first issue?) - I'm only seeing 5-7 in. hg at the
carbs with my vaccum gauge and the truck actually seems to run quite well
here. This is with the curb idle set at 1-1/2 turns in per factory setting.
Many sources state we should see 14-18 in hg.
..
Third issue (question) - I ran a compression test recently - results as
follows - #1 - 140# , #2- 145# , #3 - 142# , #4 - 141# , #5 - 157# , #6 -
140#. These numbers seem a bit high to me. Are these numbers normal for a
80 hp. engine?
Thanks,
Jeff B. - Wisconsin
'64 Monza sedan
'64 Greenbrier
'62 Greenbrier Deluxe (running parts car)
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http://www.corvair.org/
------------------------------
Message: 4
Date: Wed, 29 Aug 2012 15:25:31 -0400 (EDT)
From: N2VZD at aol.com
Subject: Re: [FC] Vacuum advance issue -
To: Mikeamauro at aol.com, jeffbrylow at gmail.com, corvanatics at corvair.org
Message-ID: <31e6e.7ba60097.3d6fc6ab at aol.com>
Content-Type: text/plain; charset="US-ASCII"
I do not think the 900 series advance units are corvair if it makes that
much difference.
I am not near my books
regards, Tim Colson
In a message dated 8/29/2012 2:50:19 P.M. Eastern Daylight Time,
Mikeamauro at aol.com writes:
"...Then when I hook up the vacuum advance line from the carb, I
immediately get at least 10 degrees of advance at idle..."
Sounds like you not connected to the ported vacuum... you should be (this
connection at carb has no vacuum signal at idle), or the idle adjustment
is
set too high (simulating an off-idle condition, and thus vacuum is
present
at ported, port).
Mike Mauro
In a message dated 8/29/2012 1:11:16 P.M. Eastern Daylight Time,
jeffbrylow at gmail.com writes:
Folks - First issue - I've been attempting to dial in the engine in my
'64
Greenbrier for some time now and have an issue that has me stumped. Quite
simply the vacuum advance seems to be performing too well! I'm
experiencing
hesitation on take off and I believe excess spark advance may be the
issue.
With the vacuum line disconnected, as is called for during the normal
timing procedure, I can time the engine, vehicle in drive, right at 13
btdc. Then when I hook up the vacuum advance line from the carb, I
immediately get at least 10 degrees of advance at idle. I've tried three
different advance units all with the same results.
Some facts to help with any offers of help -
Engine code- "ZB" '61 - '62 80 hp
carb codes - left bank 7020101 / right bank 7019110
distributor - # 1110272 / vacuum advance #951
head # 3786588.
Second issue (related to first issue?) - I'm only seeing 5-7 in. hg at
the
carbs with my vaccum gauge and the truck actually seems to run quite well
here. This is with the curb idle set at 1-1/2 turns in per factory
setting.
Many sources state we should see 14-18 in hg.
..
Third issue (question) - I ran a compression test recently - results as
follows - #1 - 140# , #2- 145# , #3 - 142# , #4 - 141# , #5 - 157# , #6 -
140#. These numbers seem a bit high to me. Are these numbers normal for a
80 hp. engine?
Thanks,
Jeff B. - Wisconsin
'64 Monza sedan
'64 Greenbrier
'62 Greenbrier Deluxe (running parts car)
_______________________________________________
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Corvanatics at corvair.org
http://www.vv.corvair.org/mailman/listinfo/corvanatics
This list sponsored by the Corvair Society of America,
http://www.corvair.org/
_______________________________________________
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This list sponsored by the Corvair Society of America,
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------------------------------
Message: 5
Date: Wed, 29 Aug 2012 15:21:26 -0600
From: "Bruce Gwyther" <vairman at q.com>
Subject: Re: [FC] Vacuum advance issue -
To: "Jeff Brylow" <jeffbrylow at gmail.com>, <corvanatics at corvair.org>
Message-ID: <F790B34420704A038E553100E1901446 at BLG1>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
It sounds like you have the distributor vacuum hose connected to the wrong
port. The correct one is the vertical pipe fairly close to the idle
adjustment screw. below that is a horizontal pipe (same size) that should
have a short hose going to the choke pull-off. The distributor gets ported
vacuum depending on engine speed. The choke pull-off gets manifold vacuum.
If distributor gets manifold vacuum it will advance the spark at idle and
may even be the cause of low vacuum at idle. Only the carb on the passenger
side goes to the distributor (the carb port on the drivers side is to be
plugged off).
The choke ports must be either plugged off or connected to properly working
choke pull-offs.
Bruce Gwyther
Bonneville Corvair Club of Utah
----- Original Message -----
From: "Jeff Brylow" <jeffbrylow at gmail.com>
To: <corvanatics at corvair.org>
Sent: Wednesday, August 29, 2012 11:11 AM
Subject: [FC] Vacuum advance issue -
> Folks - First issue - I've been attempting to dial in the engine in my '64
> Greenbrier for some time now and have an issue that has me stumped. Quite
> simply the vacuum advance seems to be performing too well! I'm
> experiencing
> hesitation on take off and I believe excess spark advance may be the
> issue.
>
> With the vacuum line disconnected, as is called for during the normal
> timing procedure, I can time the engine, vehicle in drive, right at 13
> btdc. Then when I hook up the vacuum advance line from the carb, I
> immediately get at least 10 degrees of advance at idle. I've tried three
> different advance units all with the same results.
>
> Some facts to help with any offers of help -
>
> Engine code- "ZB" '61 - '62 80 hp
>
> carb codes - left bank 7020101 / right bank 7019110
>
> distributor - # 1110272 / vacuum advance #951
>
> head # 3786588.
>
> Second issue (related to first issue?) - I'm only seeing 5-7 in. hg at
> the
> carbs with my vaccum gauge and the truck actually seems to run quite well
> here. This is with the curb idle set at 1-1/2 turns in per factory
> setting.
> Many sources state we should see 14-18 in hg.
> .
> Third issue (question) - I ran a compression test recently - results as
> follows - #1 - 140# , #2- 145# , #3 - 142# , #4 - 141# , #5 - 157# , #6 -
> 140#. These numbers seem a bit high to me. Are these numbers normal for a
> 80 hp. engine?
>
> Thanks,
>
> Jeff B. - Wisconsin
>
> '64 Monza sedan
>
> '64 Greenbrier
>
> '62 Greenbrier Deluxe (running parts car)
> _______________________________________________
> Corvanatics mailing list
> Corvanatics at corvair.org
> http://www.vv.corvair.org/mailman/listinfo/corvanatics
> This list sponsored by the Corvair Society of America,
> http://www.corvair.org/
>
------------------------------
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End of Corvanatics Digest, Vol 91, Issue 12
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