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The Terminator
Engine/Tuning
Guide me in the right direction...bad compression
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<blockquote data-quote="kezell" data-source="post: 12650458" data-attributes="member: 15441"><p>He is the story.....I was about out of gas so I pulled in a gas station...all they had was 87....so I said that I will just toss a few gallons in and drive to the next. Well that's where I went wrong.....I forgot about the low octane gas when a Camaro passed me...I down shifted and took off. Then at the top of 3rd I shut it down. I then noticed that I had a odd sounding exhaust, kinda like I dropped a cylinder. Just a flat sounding exhaust.</p><p>I got home changed the plugs and coils, same noise. Compression test is as follows.</p><p>All the passenger side read:</p><p>1-185</p><p>2-182</p><p>3-185</p><p>4-185</p><p></p><p>Driver side:</p><p>1-180</p><p>2-170</p><p>3-175</p><p><span style="color: Red">4-137 nearest the fire wall.</span></p><p></p><p>So I squirted a little oil in that cylinder and it jumped to 190.</p><p></p><p>Do you all think it is a bad ring or bad head gasket?</p><p>Car does not smoke, no water in the oil that I can tell yet.</p><p></p><p>Mods are:</p><p>Boost-a-pump</p><p>stock pumps</p><p>60lb injectors</p><p>ported blower, inlet, and tb</p><p>2.76 upper/ 4lb lower</p><p>Kooks long tubes etc..</p><p>2400 SCT MAF</p><p>Custom tune</p><p>and the rest of the supporting parts.</p><p></p><p>I know it was a bone head move and is going to cost me.</p><p>I found a head changing kit but can where can I buy factory piston rings at?</p></blockquote><p></p>
[QUOTE="kezell, post: 12650458, member: 15441"] He is the story.....I was about out of gas so I pulled in a gas station...all they had was 87....so I said that I will just toss a few gallons in and drive to the next. Well that's where I went wrong.....I forgot about the low octane gas when a Camaro passed me...I down shifted and took off. Then at the top of 3rd I shut it down. I then noticed that I had a odd sounding exhaust, kinda like I dropped a cylinder. Just a flat sounding exhaust. I got home changed the plugs and coils, same noise. Compression test is as follows. All the passenger side read: 1-185 2-182 3-185 4-185 Driver side: 1-180 2-170 3-175 [COLOR="Red"]4-137 nearest the fire wall.[/COLOR] So I squirted a little oil in that cylinder and it jumped to 190. Do you all think it is a bad ring or bad head gasket? Car does not smoke, no water in the oil that I can tell yet. Mods are: Boost-a-pump stock pumps 60lb injectors ported blower, inlet, and tb 2.76 upper/ 4lb lower Kooks long tubes etc.. 2400 SCT MAF Custom tune and the rest of the supporting parts. I know it was a bone head move and is going to cost me. I found a head changing kit but can where can I buy factory piston rings at? [/QUOTE]
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Guide me in the right direction...bad compression
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