Author Topic: NOS Engine  (Read 1899 times)

Dusk_Blue_Z

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Re: NOS Engine
« Reply #15 on: May 03, 2018, 05:34:17 PM »
Otherside
1969 X77 01B 51 51 flat hood

Dusk_Blue_Z

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Re: NOS Engine
« Reply #16 on: May 03, 2018, 05:35:13 PM »
A stamping
1969 X77 01B 51 51 flat hood

Dusk_Blue_Z

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Re: NOS Engine
« Reply #17 on: May 03, 2018, 05:36:45 PM »
The pistons all have letters written on them. Here's one with an 'H', they are in the 1-3-5-7 cylinders. 2-4 have 'G' and 6-8 have a 'J'.
1969 X77 01B 51 51 flat hood

maroman

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Re: NOS Engine
« Reply #18 on: May 03, 2018, 09:04:41 PM »
What is the ingredients of the vinegar concentrate? I buy vinegar at the grocery by the gallon.
Doug  '67 RS/SS 396 auto I know the car since new

Dusk_Blue_Z

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Re: NOS Engine
« Reply #19 on: May 03, 2018, 11:05:45 PM »
It's called Austin's Cleaning Vinegar. When I bought it, it didn't list the acidity level, I just assumed it was higher than the 5% that's in white vinegar. Also, the label warned against drinking it.

Here's the website: http://austinsbleach.com/product/cleaning-vinegar/

I'm not a scientist nor do I play one on TV, but the Safety Data Sheet lists Acetic Acid at 4-6%, the remainder is water. I noticed on the white vinegar label is listed acidity of 5%, but I don't know if that's acetic acid or something other acid.

The Austin's was $1.79 a quart.
1969 X77 01B 51 51 flat hood

maroman

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Re: NOS Engine
« Reply #20 on: May 04, 2018, 12:46:23 AM »
Thanks, I will look for it. As I said, I've been using plain white for several years and it works great.
Doug  '67 RS/SS 396 auto I know the car since new

KurtS

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Re: NOS Engine
« Reply #21 on: May 14, 2018, 04:03:08 PM »
Pretty sure the letters on the pistons is for sizing.
Kurt S
CRG

ko-lek-tor

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Re: NOS Engine
« Reply #22 on: May 15, 2018, 12:35:04 AM »
Pretty sure the letters on the pistons is for sizing.
X2
James to strangers, Bentley to friends
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79(sold)
1969 307 4spd. coupe Daytona Yellow 711 bought in 85

JKZ27

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Re: NOS Engine
« Reply #23 on: May 17, 2018, 12:56:15 AM »
Pretty sure the letters on the pistons is for sizing.
X2

Kurt, Bentley, or Nick, would there be corresponding letter marks or stamps on the block to match piston to bore? I remember 4.0 Jeep 6cyls had hand written letters, A,B,C,D, to indicate finished bore size range.
John
69 RS/SS Cortez Silver, L48 MC1
68 RS Ash/Ivy Gold 327EFI M20

Dusk_Blue_Z

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Re: NOS Engine
« Reply #24 on: May 31, 2018, 12:52:18 AM »
Hi, sorry to bring this thread back up, but I've exhausted all search combinations and cannot find an answer. For some reason, the front end of the NOS engine crank is exactly 0.5" shorter than two 1178's I measured. Which is why I'm having trouble putting the balancer on...

Does anyone have insight on this? Would I be better asking the Nasty Z28 community?

So frustrating!!!
1969 X77 01B 51 51 flat hood

Dusk_Blue_Z

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Re: NOS Engine
« Reply #25 on: May 31, 2018, 12:03:30 PM »
After sleeping on it, I've accepted the 302 and 350 cranks have different size snouts. Like many of the interchangeable parts on these SBC's, I figured the snouts would be the same size. Sorry for the rant above.
1969 X77 01B 51 51 flat hood

Kelley W King

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Re: NOS Engine
« Reply #26 on: May 31, 2018, 12:15:47 PM »
Something I did not know. Is this a way we could identify a 302 assembled? With or without the balancer on. Maybe post some pics.
69 Z28 RS Scuncio Hi Performance
69 SS L78
67 SS Chevelle
64 Corvette
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77 Trans Am Special Edition

Stingr69

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Re: NOS Engine
« Reply #27 on: May 31, 2018, 12:37:03 PM »
Looking at Colvin's book - Overall length of the SBC cranks should be between 24.71" and 24.73".  Might not cover all the applications but it is a dimension for you to check.  We probably need more 350 crank dimension data points to check before assuming your crank is typical.

Stingr69

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Re: NOS Engine
« Reply #28 on: May 31, 2018, 12:39:28 PM »
What problem are you having installing the damper?

Dusk_Blue_Z

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Re: NOS Engine
« Reply #29 on: June 01, 2018, 01:48:39 AM »
The dampener was bottoming out, either on the first main journal or the getting hung up on one of the keys. For some reason I though the balancer went all the way on, nearly being flush with the timing chain cover. I'm about 3/8" off the timing cover now. Its on as far as she'll go.

Next I'm going to install the water pump and pulley's to see how that lines up.

I'll measure the 350 and 302 cranks and see how they stack up.
1969 X77 01B 51 51 flat hood