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The Terminator
Engine/Tuning
Coolant splash..
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<blockquote data-quote="Roush6018" data-source="post: 16872875" data-attributes="member: 78571"><p>you are doing a good job trying to pinpoint the failure so you can get the car fixed correctly. i am glad to see a result of the compression test. i can see the problem is the number 7 cylinder. i can see another problem with the 1-2 cylinder. </p><p></p><p>so in theory when you are pushing the car at 18psi boost there is approx 118psi on the low cylinders and approx 133psi in the other cylinders. your loss of power complaint is telling me there is possibly low compression in 3-4 cylinders.</p><p></p><p> these cars are pushing 150-160 psi in each cylinder on a good engine and with a good headgasket in my car it never over heats or boils over in 100 degrees day outside. and am running stock upper pulley at 7psi boost. </p><p></p><p>i suggest this; remove all 8 spark plugs and try to fill up your coolant reservoir and then try to pressurize the coolant reservoir (15psi) and try to see if any cylinders are filling up with any water or only tiny drops of coolant in the cylinder will be a failed headgasket seal.</p></blockquote><p></p>
[QUOTE="Roush6018, post: 16872875, member: 78571"] you are doing a good job trying to pinpoint the failure so you can get the car fixed correctly. i am glad to see a result of the compression test. i can see the problem is the number 7 cylinder. i can see another problem with the 1-2 cylinder. so in theory when you are pushing the car at 18psi boost there is approx 118psi on the low cylinders and approx 133psi in the other cylinders. your loss of power complaint is telling me there is possibly low compression in 3-4 cylinders. these cars are pushing 150-160 psi in each cylinder on a good engine and with a good headgasket in my car it never over heats or boils over in 100 degrees day outside. and am running stock upper pulley at 7psi boost. i suggest this; remove all 8 spark plugs and try to fill up your coolant reservoir and then try to pressurize the coolant reservoir (15psi) and try to see if any cylinders are filling up with any water or only tiny drops of coolant in the cylinder will be a failed headgasket seal. [/QUOTE]
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