Any way to ID cylinders? |
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Any way to ID cylinders? |
Chi-town |
Jun 18 2019, 08:05 AM
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#1
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
Before I pull a head off my mystery motor aka 72-73 bus 1.7 case drilled for 914 dipstick with 914 heads and 130-140psi cold compression.
Is there any way to ID a cylinder from the exterior? |
Mark Henry |
Jun 18 2019, 08:24 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Size? No
You have to remove the head and measure or it's often stamped on the piston top. Check the head part number, if the head is 1.7 good chance the rest of the engine is 1.7 There may be a way on an engine stand to measure the sweep volume with a measured fluid, but I'll have a head off/on and measured many hours before you had this done. While you're in there also measure the stroke, common to put a 2.0 crank and rods in a 1.7 case. Of course first clue would be stock 94mm pistons. |
Chi-town |
Jun 18 2019, 09:05 AM
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#3
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
Thanks Mark, I'll pull the head and see what surprises await (IMG:style_emoticons/default/laugh.gif)
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VaccaRabite |
Jun 18 2019, 11:45 AM
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#4
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
With cold compression that good, why look? Add fuel and see how it runs.
Zach |
Chi-town |
Jun 18 2019, 01:59 PM
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#5
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
It's just so I know what I'm selling (IMG:style_emoticons/default/smile.gif)
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jcd914 |
Jun 18 2019, 05:04 PM
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#6
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
Get a bore scope and go in through the spark plug hole and see if you can read markings on the pistons.
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colingreene |
Jun 18 2019, 05:20 PM
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#7
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Senior Member Group: Members Posts: 729 Joined: 17-October 13 From: Southern California Member No.: 16,526 Region Association: Southern California |
well what is it
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porschetub |
Jun 18 2019, 06:18 PM
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#8
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Advanced Member Group: Members Posts: 4,705 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Get a bore scope and go in through the spark plug hole and see if you can read markings on the pistons. Can your bore-a-scope read through a carbon layer on the top of the piston...not likely (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/screwy.gif) . Sorry but "thems the facts". The answer is no as mentioned. |
jcd914 |
Jun 18 2019, 10:27 PM
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#9
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
Get a bore scope and go in through the spark plug hole and see if you can read markings on the pistons. Can your bore-a-scope read through a carbon layer on the top of the piston...not likely (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/screwy.gif) . Sorry but "thems the facts". The answer is no as mentioned. It depends on what you have in the way of carbon build up, you can see a lot close up with a bore scope. And if you could read, I said "see if you can read" but apparently you would rather put your time and effort into insults and ridicule than actually paying attention to what was posted. Jim |
Chi-town |
Jun 19 2019, 08:45 AM
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#10
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
Well the Pistons were shiney when I looked in with my bore scope before I test ran it so there's a possibility of there are markings on the crown.
I'm probably just going to pull the head just because |
euro911 |
Jun 19 2019, 06:45 PM
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#11
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
Size? No Make sure you avoid inserting chopsticks in the sparky-plug hole(s) to measure the stroke (IMG:style_emoticons/default/laugh.gif) You have to remove the head and measure or it's often stamped on the piston top. Check the head part number, if the head is 1.7 good chance the rest of the engine is 1.7 There may be a way on an engine stand to measure the sweep volume with a measured fluid, but I'll have a head off/on and measured many hours before you had this done. While you're in there also measure the stroke, common to put a 2.0 crank and rods in a 1.7 case. Of course first clue would be stock 94mm pistons. |
porschetub |
Jun 20 2019, 10:44 PM
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#12
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Advanced Member Group: Members Posts: 4,705 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
[quote name='jcd914' date='Jun 19 2019, 04:27 PM' post='2723767']
[quote name='porschetub' post='2723695' date='Jun 18 2019, 05:18 PM'] [quote name='jcd914' post='2723671' date='Jun 19 2019, 11:04 AM'] Get a bore scope and go in through the spark plug hole and see if you can read markings on the pistons. [/quote] Can your bore-a-scope read through a carbon layer on the top of the piston...not likely (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/screwy.gif) . Sorry but "thems the facts". The answer is no as mentioned. [/quote] It depends on what you have in the way of carbon build up, you can see a lot close up with a bore scope. And if you could read, I said "see if you can read" but apparently you would rather put your time and effort into insults and ridicule than actually paying attention to what was posted. quote, Wow ,sorry you are sensitive to my reply ,not my intention to piss you off,just stating fact in this situation. |
Chi-town |
Jun 21 2019, 07:42 AM
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#13
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
It was a 1.8 (92mm bore/66mm stroke)
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Mark Henry |
Jun 21 2019, 07:50 AM
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#14
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
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Chi-town |
Jun 21 2019, 12:43 PM
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#15
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
More likely I'm blind (IMG:style_emoticons/default/laugh.gif)
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Mark Henry |
Jun 21 2019, 01:14 PM
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#16
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I hear you...I need glasses for my glasses. |
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