Time for a rebuild?, Time for a rebuild |
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Time for a rebuild?, Time for a rebuild |
Wew |
Jan 17 2020, 06:06 PM
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#1
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Member Group: Members Posts: 227 Joined: 17-January 15 From: Novato, ca Member No.: 18,335 Region Association: None |
Hi All,
I love this community. I have used the search function a bazillion times to gather invaluable information to help troubleshoot and DIY's on my 73 2.0 fuel injection. I have been working on the body for years and have it in pretty good shape. The interior as well is almost done. I have gone through the suspension and replaced shocks and tie rods. New vacuum hoses, rebuilt injectors and all new stainless steel fuel lines. I have worked my way around the engine, and still need to put a new CHT on as it reads cool. Any whoo, I did a compression test today and these were my readings. 1. 110 2. 105 3. 100 4. 130 Some big variances there. Spark plugs are all dark. Is it rebuild time? Recommendations on best DIY rebuild sources books, blogs, youtubes, this forum etc. I want to keep it pretty much stock but am interested in putting the european style pistons in the car. Any other recommendations and opinions are much appreciated. Thanks, Gary |
BeatNavy |
Jan 18 2020, 07:17 AM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
More info:
CR is the calculated Compression Ratio (either 8.7 or 8.9 in his notes). I haven't run this person's number to check, but CR is going to be based on combustion chamber volume in head (61 cc according to the notes), deck (plus shim) height, stroke (71 mm for stock 2.0 crank). and bore or diameter of cylinder (96 mm, versus 94 for stock 2.0). Displacement (2056) is based on engine bore (96 mm) x swept volume (71 mm) x 4 cylinders. 2056 is a nice engine from stock as the cylinders drop right in without machining, it doesn't over stress the components, and it can use stock FI induction (with tuning) if desired. Here, this is something fun to play with: https://www.cbperformance.com/v/enginecalc.html |
Wew |
Jan 18 2020, 10:49 AM
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#3
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Member Group: Members Posts: 227 Joined: 17-January 15 From: Novato, ca Member No.: 18,335 Region Association: None |
Wow. Great info. Thanks much for taking the time. It seems like it’s getting close to engine drop time. I am keeping my fingers crossed regarding what lies beneath those cylinder heads.
The car is a fuel injection and the valves are very loud. (Hydraullic) I have never adjusted the valves on the car. More info: CR is the calculated Compression Ratio (either 8.7 or 8.9 in his notes). I haven't run this person's number to check, but CR is going to be based on combustion chamber volume in head (61 cc according to the notes), deck (plus shim) height, stroke (71 mm for stock 2.0 crank). and bore or diameter of cylinder (96 mm, versus 94 for stock 2.0). Displacement (2056) is based on engine bore (96 mm) x swept volume (71 mm) x 4 cylinders. 2056 is a nice engine from stock as the cylinders drop right in without machining, it doesn't over stress the components, and it can use stock FI induction (with tuning) if desired. Here, this is something fun to play with: https://www.cbperformance.com/v/enginecalc.html |
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