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I could use some mechanical help
Posted by: Don63Vair2 ()
Date: June 11, 2018 05:58AM

Hi all, longtime lurker could use some help.
I guess first off, can someone recommend a good corvair mechanic in NE Wisconsin?
I used to take my car to Larry Claypool and never had a problem, but unfortunately Larry is not doing these repairs anymore.

I have been having a problem with my '63 Monza for the past couple of years and have taken it to a local guy who eventually got my dying out problem fixed by re-routing power to the coil from the block connector by drivers side carb & adding the resistor. But now I have the problem of poor acceleration, hard time climbing a steep hill, and have a hard time reach 70 mph, which I didn't have a problem with before. Also it runs on slightly when I turn it off (unless it is still in drive). I am tired of going back to this shop and would like to know if there is either someone can recommend a reliable Corvair mechanic or if someone can point me in the right direction for me to do it myself.

So here are some of the other repairs done while trying to fix the original problem.

- '64 carbs were put on (said my pair were mismatched, but I never had a prob)
- replaced fuel lines
- added fuel filter after tank
- replaced points and lead wire

It doesn't seem to have a problem with fuel delivery.
I covered each carb with my palm and both seem to have strong suction, but covering the drivers side causes the car to stumble hard while doing the pass side doesn't do much.

If you need any more info, let me know, but I will not have access to the car until Monday 6-18. Thanks......

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Re: I could use some mechanical help
Posted by: curt ()
Date: June 11, 2018 06:22AM

Check point gap, then check timing. A compression test my shed some light on the problem if the timing and points are correct and the problem remains.

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Re: I could use some mechanical help
Date: June 11, 2018 06:35AM

Did they bypass the rectangular connector? Please post a photo of the wiring repair.
First, check that your linkage is allowing the carburetors to open fully. Replacing the carburetors affects the linkage. They need to be adjusted for "balance" or even opening between the two carburetors, then for choke operation, and finally for full throttle operation.
Also check your ignition timing setting with a timing light.
Do you have a Chevrolet shop manual?
Reading the manual will give you knowledge about how the mechanics of the Corvair work and how they should be adjusted.


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: I could use some mechanical help
Posted by: Wagon Master ()
Date: June 11, 2018 07:00AM

Don63Vair2 Wrote:
-------------------------------------------------------
> I covered each carb with my palm and both seem to
> have strong suction, but covering the drivers side
> causes the car to stumble hard while doing the
> pass side doesn't do much.

I believe you've narrowed in on your issue. Right hand carb. is not delivering fuel at idle. Perhaps at upper RPM too. Manually raise RPM to about 2000. Try palm test again. Same result? Post your findings.

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Re: I could use some mechanical help
Posted by: cnicol ()
Date: June 11, 2018 07:03AM

I agree with everything Dan Davis wrote - my thoughts exactly.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: I could use some mechanical help
Posted by: MattNall ()
Date: June 11, 2018 07:23AM

Welcome to the CCF!

Hopefully someone in your area will speak up





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: I could use some mechanical help
Posted by: MattNall ()
Date: June 11, 2018 08:28AM

Also Call Larry and see if he can recommend someone near you.





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: I could use some mechanical help
Posted by: Don63Vair2 ()
Date: June 11, 2018 06:41PM

Thanks for the info guys, I will look into these suggestions when I get to the car on Monday or Tuesday of next week. I'll also get a photo of the rewire to the coil.

If there are any more suggestions, keep 'em comin'

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Re: I could use some mechanical help
Posted by: MattNall ()
Date: June 11, 2018 06:43PM

Don...we don't need a picture... draw a wiring diagram and take a pic..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: I could use some mechanical help
Posted by: MattNall ()
Date: June 11, 2018 07:36PM

Fairly close to Duluth, Minn.? PM Upnoth1 and he can connect you with someone





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: I could use some mechanical help
Posted by: vairsUPnorth ()
Date: June 11, 2018 08:27PM

Matt, I am a lot closer to him than Duluth, but still 200+ miles away. I can recommend a shop local to me in Houghton, but here has to be someplace in the Fond du Lac/Oshkosh/Appleton/Green Bay area that can work on Corvairs.

Don, have you contacted the local NE Wisconsin Corvair Club?

[corvaircenter.com]

Dale Dewald
Hancock, MI

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Re: I could use some mechanical help
Posted by: MattNall ()
Date: June 11, 2018 08:33PM

[www.facebook.com]

NE Corvair Club Website





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: I could use some mechanical help
Posted by: Gregory_Miller ()
Date: June 12, 2018 09:07AM

Covering one carb then the other seems to have some relevance, as it stumbles badly when one is covered and almost nothing when the other is covered. I had a plugged idle siphon tube in one venturi, in addition to some other issues, check idle mixture screw setting on carb that does almost nothing as a starting point. You may have several issues all at the same time like I did, making troubleshooting difficult. I had a slowly failing coil that both affected ignition timing and the strength of the spark that drove me batty. Troubleshooting that introduced other problems that took time to iron out, so I know your pain. GL finding someone nearby that can help you.

Greg Miller
Eugene, Oregon

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Re: I could use some mechanical help
Posted by: vairchet ()
Date: June 12, 2018 09:55AM

Suggest carburetor linkage adjustment and synchronizing. Right side carburetor idle circuit could be plugged with debris.

Chet in Ramona

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Re: I could use some mechanical help
Posted by: Wagon Master ()
Date: June 12, 2018 11:21AM

4th post

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Re: I could use some mechanical help
Posted by: vairchet ()
Date: June 12, 2018 11:46AM

Yup, that's right.

Chet in Ramona

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Re: I could use some mechanical help
Posted by: roger65180 ()
Date: June 12, 2018 03:55PM

Hi Don I am neer Madison and work on corvairs part time I sent you a PM

Roger R
Madison Wi
62 ct pg turbo
65intercooled 180 4sp,autocrosser
62 Rampy

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Re: I could use some mechanical help
Posted by: Yellow ()
Date: June 13, 2018 11:19AM

Wagon Master Wrote:
-------------------------------------------------------
> Don63Vair2 Wrote:
> --------------------------------------------------
> -----
> > I covered each carb with my palm and both seem
> to
> > have strong suction, but covering the drivers
> side
> > causes the car to stumble hard while doing the
> > pass side doesn't do much.
>
> I believe you've narrowed in on your issue. Right
> hand carb. is not delivering fuel at idle. Perhaps
> at upper RPM too. Manually raise RPM to about
> 2000. Try palm test again. Same result? Post your
> findings.

Not sure if I should start a new topic or follow up here, but I have a similar issue where it runs really rough only while idling in gear. Powerglide. Sounds ok while in nuetral and idling and while I drive. One side nearly stalls and the other just a slight stumbling. Both have a pretty strong suction. Thanks Guys!



62 Monza Convertible w/64 Differential and Leaf



Edited 1 time(s). Last edit at 06/13/2018 11:22AM by Yellow.

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Re: I could use some mechanical help
Posted by: Gregory_Miller ()
Date: June 13, 2018 02:40PM

When I had a blocked idle siphon tube in one carb, I had other issues and it wouldn't even idle. I had another primary and I just swapped it in, then when I put the "best" of everything with matching numbers together to make a pair, and then it would idle poorly at least, and I finally discovered the blockage. Sounds like one or more of you might have partial blockage or perhaps idle mixture screw a bit too far closed on on the one that doesn't seem to affect the idle.

Greg Miller
Eugene, Oregon

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Re: I could use some mechanical help
Posted by: Grandpacorvair ()
Date: June 13, 2018 04:17PM

All of the above suggestions are, of good. I would also like to suggest checking the fuel sock in the gas tank if it hasn't been replaced. It's entirely possible that you have more than one problem. Swapping carbs may have installed a second one....

Kerry Borgne
Birmingham, Michigan

1963 Spyder Convertible

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