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Nitrided 8409 crankshaft
Posted by: ac1948 ()
Date: August 23, 2021 01:03PM

What's the going price for this crank?
140 dropped a valve seat and destroyed 2 pistons and one head. Crank is std/std and in great shape. I'm not planning on rebuilding the engine. Thanks

Jerry Murray
Charleston, SC

63 Rampside, PG,110

65 4 door

65 Monza convertible, pg,ac,tele,am/fm

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Re: Nitrided 8409 crankshaft
Posted by: cnicol ()
Date: August 23, 2021 01:11PM

I sent you a PM with my estimate of its value.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
65 Canadian Monza 4dr 110/PG 40k
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: Nitrided 8409 crankshaft
Posted by: Lane66m ()
Date: August 23, 2021 01:12PM

Clark's with new gear. $ 849.90

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Re: Nitrided 8409 crankshaft
Posted by: viewmaster ()
Date: August 23, 2021 02:20PM

I sell my std/std "&" cranks, used, with used gear in good shape for $699.00 + ride from Central CA (when i have them)

Mike
'65 '500' Sedan 110 PG
'65 Monza Sedan turbo'd 110 SU conversion
Fresno, CA

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Re: Nitrided 8409 crankshaft
Posted by: alphasud ()
Date: August 23, 2021 03:50PM

Remember if a nitrided crank is turned undersize you have lost the nitrided properties of the crank. That needs to be reapplied.

David North Idaho
1965 Corsa Turbo converted to 140
1971 Super Beetle with 2.5L Subaru engine

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Re: Nitrided 8409 crankshaft
Posted by: MattNall ()
Date: August 23, 2021 04:58PM

But it would need to be turned to 0.030" [ 0.015" from STD surface ] to eliminate 100% of nitriding.

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: Nitrided 8409 crankshaft
Posted by: azdave ()
Date: August 23, 2021 06:31PM

Lane66m Wrote:
-------------------------------------------------------
> Clark's with new gear. $ 849.90

Dang! Now I have to stop selling 140 engine core engines for $500 before tearing them down and checking to see if they have STD/STD cranks.

grinning smiley

Dave W. / Gilbert Arizona
65 Corsa 140/4
66 Corsa 140/4
66 Corsa 140/4 w/factory A/C
66 Corsa 455 Toro V8
65 Monza Convertible 110/4
66 Monza Convertible 140/4 A/C
65 Monza 4DR 140/PG w/factory A/C
65 Monza 4DR EJ20T/5



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Re: Nitrided 8409 crankshaft
Date: August 23, 2021 10:11PM

That is one valuable ampersand!! smoking smiley



Dave "Motohead" crank with a mystery "L" also stamped


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 Corsa 140 Coupe ~ ~ 1965 Monza 140/4 Convertible Sierra Tan/Fawn ~ 1964 Monza Spyder Convertible ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 CoupeEvening 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: Nitrided 8409 crankshaft
Posted by: dryenko ()
Date: August 24, 2021 06:49AM

I have a 1/2 dozen nice 140 / Turbo cranks I would sell for that $699.00 plus shipping.
Racing Funds !!
BC

Bob C aka Dryenko
Dobson, NC 27017

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Re: Nitrided 8409 crankshaft
Posted by: v8vair ()
Date: August 26, 2021 05:56AM

I better stop giving them away to my friends !

1965 Crown V8 Racer
1964 Bill Thomas Monza Replica Racer
1964 Spyder Street Car
1979 Mazda RX7

Mike Levine

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Re: Nitrided 8409 crankshaft
Posted by: isucorvair ()
Date: August 26, 2021 06:07AM

v8vair Wrote:
-------------------------------------------------------
> I better stop giving them away to my friends !


Amen to that!

Sale price - $300 each at my place!


Eric

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Re: Nitrided 8409 crankshaft
Posted by: JimBrandberg ()
Date: August 28, 2021 07:43AM

MattNall wrote:
"But it would need to be turned to 0.030" [ 0.015" from STD surface ] to eliminate 100% of nitriding."

----------------------------------------------------------------------------------

I could be wrong but I've always been under the impression that Nitriding was gone with a .010 regrind. Is there a percentage number with .010 and .020? I can't remember the last time I brought in a crankshaft that required .020 but I've got a few to choose from.

Jim Brandberg
Isanti, MN
CorvairRepair.com



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Re: Nitrided 8409 crankshaft
Posted by: MattNall ()
Date: August 28, 2021 08:02AM

Bob Coffin wrote earlier, nitriding is 0.015" deep. A 10 undergrind only removes 0.005" [ 1/2 diameter]

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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