Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Wiring Up Engine for Out-of-Car Test Run
Posted by: Frog ()
Date: October 07, 2018 02:20PM

I've read several accounts of how to wire up the engine for a bench run.

The moment of truth is quickly approaching for when I attempt to start my "new" engine for the first time.

Am I to understand that as long as a well-charged battery remains connected to the starter and ground, the engine will continue to run for the recommended twenty minutes at 2,000 RPM, and I don't have to connect the generator to anything, or worry about voltage regulator, etc.?


While searching for the 1.8-Ohm ballast resistor and a dwell/tac meter, my FLAPS guy gave me a blank look when I asked him if he has ballast resistors in stock. Then, "[his] face, at first just ghostly, turned a whiter shade of pale" when I asked him if he has a dwell/tac meter in stock.

Rob Lane
Clayton, in the Northeast Georgia Mountains.
1964 500 Coupe
Purchased by me in April of 1964.

Attachments:

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Lane66m ()
Date: October 07, 2018 02:29PM

You got an old engine harness? Strip the resistance wire out of it.

I have a couple of tach/dwell meters that I am planning to sell after Maggie Valley.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: davemotohead ()
Date: October 07, 2018 02:49PM







Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Frog ()
Date: October 07, 2018 03:45PM

Dave Motohead,

I've watched your video at least a dozen times. I understand your wiring setup, but I'm not sure whether the battery alone will keep the engine running long enough for the cam break-in. I'm guessing it must be considering there will no voltage regulator and other wire connections necessary.

At this point, should I at least engage the starter and perform a compression check? I'm really nervous about the upcoming "main event" so I guess it makes sense to at least ensure the starter engages properly and I've got proper compression on all cylinders.

Thank you.

Frog

Rob Lane
Clayton, in the Northeast Georgia Mountains.
1964 500 Coupe
Purchased by me in April of 1964.

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Lane66m ()
Date: October 07, 2018 03:50PM

Keep a battery charger on 2 amp charge on the battery while you are running the engine. That is enough to supply power to the coil without bringing battery voltage down.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: 63vert ()
Date: October 07, 2018 03:50PM

.

Rockingham, NC


1962 Greenbrier
65 110 4speed



Edited 1 time(s). Last edit at 10/07/2018 03:51PM by 63vert.

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Lane66m ()
Date: October 07, 2018 03:53PM

Looks like the belt is on, so the fan has to be on.

I am putting block off plates on the heater ducts and fresh air ducts. Just to keep blower fan air on the cylinders and out the cooling boxes.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: davemotohead ()
Date: October 07, 2018 04:02PM

I have ran them for hours with a good charged battery, the racers run most cars the entire race with no working alternator to gain HP. I never do a compression check on a rebuilt engine, I am confident in my cold valve adjustments and just fire them up and go!





Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: roger65180 ()
Date: October 07, 2018 05:19PM

do not worry about the battery lasting long enough for brake in, I drove my 62 convert over 500 miles with a failed generator,cleavland Ohio to Madison Wi

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

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Frog ()
Date: October 07, 2018 06:09PM

Boy, you folks have made me breathe a little easier.

Thanks.

Frog

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: JimBrandberg ()
Date: October 08, 2018 05:34AM

I don't worry about a resistance wire when test running on a stand, I just run 12 volts for that little bit of time.
I do use an oil pressure light. It's comforting when it goes out and good to know if the sender is bad before installing in chassis.
I don't let it idle very much at first.
Watch for raw gas dribbling from the venturi clusters, it's hard on the cylinders.

Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: davemotohead ()
Date: October 08, 2018 09:36AM

Jim, without a resistor or resistor wire the stock coil over heats and will shut off in a min or so. It's ok if you have a 12V coil, but stock coils need a resistor to Lower the running voltage.





Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Lane66m ()
Date: October 08, 2018 05:55PM

Rob and I have the resistor wire issue worked out 2 ways.

1. He can connect into the engine harness connector pin for the resistor wire.

Or

2. He can use the resistance wire I stripped out of a scrapped harness to provide power to the coil.

I am meeting up with him here at Maggie Valley to give him the wire.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: JimBrandberg ()
Date: October 10, 2018 05:29AM

I was under the impression that direct 12 volts was hard on the points but I didn't think it heated up the coil. I've never had one shut off when running on the stand. I guess I'll give it a feel next time. I learn stuff here all the time.

Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: toms73novass ()
Date: October 10, 2018 05:37AM

A cheap ballast resistor is what I use and no need for the long resistance wire.

Wells AL795 Ballast Resistor $5 at autozone

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
65' Monza MY Build Thread
73' NovaSS 454 Big block
86' BMW 325es
98' Dodge 2500 12v Cummins Diesel with 1200 lb torque!
98' VW Jetta TDI, for daughter
01' Audi Allroad Stage 3 twin turbo

NFCC
Grand Island, NY

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: davemotohead ()
Date: October 10, 2018 05:37AM

When I first started running them on the stand as a Kid I could only get them to run a min or less, my Father was the one who told me about the coil issue, I put a in line ballast resistor in line and no more problem, a few years ago I was helping a buddy run a new engine and the same problem arose, in line resistor and no more problem.





Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Lane66m ()
Date: October 10, 2018 06:17AM

Buy a 1.8 ballast resistor and make new wires to feed coil and resistor or use a free resistance wire with added terminals. Hmmm, what would a Vair owner do to test the engine on the floor. I suspect most Vair owners would use the resistance wire and coil up any not needed for length into a service loop.

During test of my test stand, I had mounted an AC Delco U505 6 volt coil and it was getting 5.56 volts. It was warm to the touch after 10 minutes. I guess without the resistance wire, it would be smoking with the 12.6 volts the battery had.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: MattNall ()
Date: October 10, 2018 07:45AM

12 volts direct







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

Options: ReplyQuote
Re: Wiring Up Engine for Out-of-Car Test Run
Posted by: Richard ()
Date: October 10, 2018 08:54AM

I won't say a coil can't be damaged by not using a ballast resistor. Millions of cars have been stolen with just use a flash light, screw driver and length of copper wire. They often make it many miles and never seen again.
Coil failure would be a blessing if it could be counted on.

The starter motor cranks the engine at 150-200 rpm. If you check the oil pressure at or below idle rpm, you will find that oil pressure drops off very dramatically below 500 rpm on most any engine.
Prime the oil pump, install dist, static time it and start the engine. This is no time to treat the bearings and lifters to less than adequate oil pressure by doing a compression test. 1500-2000 rpm rather than a constant rpm is what I prefer, but no sound reasoning.

Options: ReplyQuote


Sorry, only registered users may post in this forum.
This forum powered by Phorum.