 Engine Compression Numbers for 73 1.8, Any thoughts? |
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| Kaduku |
 Feb 18 2013, 10:17 PM
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#1
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Member  Group: Members Posts: 344 Joined: 1-January 13 From: SF Bay Area Member No.: 15,324 Region Association: None  |
Sorry, I am new to this thing. Any thoughts on these numbers? Good or bad?
110, 120, 110, 115 |
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| Black22 |
Feb 18 2013, 11:19 PM
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#2
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
QUOTE(Kaduku @ Feb 18 2013, 08:17 PM)  Sorry, I am new to this thing. Any thoughts on these numbers? Good or bad? 110, 120, 110, 115 Seem ok to me. There are more miles on that engine. Are you sure it's a 1.8L. In '73 1.7 and 2.0 were available. About your avatar name...are you Chamorro? |
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| Kaduku |
Feb 18 2013, 11:30 PM
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#3
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Member Group: Members Posts: 344 Joined: 1-January 13 From: SF Bay Area Member No.: 15,324 Region Association: None |
QUOTE(Black22 @ Feb 18 2013, 09:19 PM) QUOTE(Kaduku @ Feb 18 2013, 08:17 PM) Sorry, I am new to this thing. Any thoughts on these numbers? Good or bad? 110, 120, 110, 115 Seem ok to me. There are more miles on that engine. Are you sure it's a 1.8L. In '73 1.7 and 2.0 were available. About your avatar name...are you Chamorro? Lol Hafa Adai, yes Tao Tao Guahan. Actually Flip but born and raised there. The engine has probably over a 100k on it. It's a long story, but the PO changed out the 1.7 engine in the early 90s. The original engine may have had a dropped valve, and he owned a VW dealership that had a bunch of engines laying around, so he picked he best one and installed it. At least that's what I was told. I will eventually install a good working 2.0 one day. |
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| Black22 |
Feb 19 2013, 12:29 AM
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#4
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
QUOTE(Kaduku @ Feb 18 2013, 09:30 PM) QUOTE(Black22 @ Feb 18 2013, 09:19 PM) QUOTE(Kaduku @ Feb 18 2013, 08:17 PM) Sorry, I am new to this thing. Any thoughts on these numbers? Good or bad? 110, 120, 110, 115 Seem ok to me. There are more miles on that engine. Are you sure it's a 1.8L. In '73 1.7 and 2.0 were available. About your avatar name...are you Chamorro? Lol Hafa Adai, yes Tao Tao Guahan. Actually Flip but born and raised there. The engine has probably over a 100k on it. It's a long story, but the PO changed out the 1.7 engine in the early 90s. The original engine may have had a dropped valve, and he owned a VW dealership that had a bunch of engines laying around, so he picked he best one and installed it. At least that's what I was told. I will eventually install a good working 2.0 one day. Well then, Hafa Adai and Hoy! I'm Irish/Mexican and lived on Saipan for 10 yrs! When I saw kaduku I laughed! My girlfriend, who was Chamorro, always said that to me. I guess we're both kaduku for getting involved in these little cars. Others here will give you a better opinion of your numbers, but it will be good for the short term at least. Suwerte. |
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| Black22 |
Feb 19 2013, 12:37 AM
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#5
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
Just did a search to verify. This comes from a respectable member here on a different thread about compression numbers.
"You want to see 110 PSI or more, generally. Mine were at 100 PSI and the engine was pretty well worn out. Additionally, you want to see the numbers be as close as possible. Within about a 10% variation is generally cool. --DD" |
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| Dasnowman |
Feb 19 2013, 01:51 AM
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#6
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You miss 100% of shots you don't take! Group: Members Posts: 265 Joined: 24-May 12 From: Tricities, B.C./ Lake Whatcom Member No.: 14,477 Region Association: Canada |
I just did a compression test on my car on the weekend that was sitting 20+ years before I bought i....turned out to be 145-150-145-150... I'm a happy camper considering all I had to go on is what the guy on Craigslist said that it was rebuilt 20+ years ago before it was put in storage. And beleive it's a 1.7 not sure if it was over built or not also the block was stamped but missing one #? so it might have been built from a fresh block? |
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| Kaduku |
Feb 19 2013, 08:13 AM
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#7
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Member Group: Members Posts: 344 Joined: 1-January 13 From: SF Bay Area Member No.: 15,324 Region Association: None |
Thank you for all your input, I am learning much more mechanically than I did when I was into MGBs.
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| Kaduku |
Feb 19 2013, 08:35 AM
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#8
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Member Group: Members Posts: 344 Joined: 1-January 13 From: SF Bay Area Member No.: 15,324 Region Association: None |
QUOTE Others here will give you a better opinion of your numbers, but it will be good for the short term at least. So tell me how much longer will she live? If I drive it like 1500 miles a year. |
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