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no compression

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Old Oct 26, 2008 | 10:42 AM
  #1  
94 Cobra SVT's Avatar
94 Cobra SVT
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Default no compression

Hi, have a 94 cobra... just finished putting a set of patriot heads on it.. i have a e303 cam and little bolt ons... put everything back together tried starting it and it has no compression.. order the spark plugs patriot told me to get.. so i know everything is correct. just don't know why it don't have compression.

Hope someone can help, trying not to get rid of it.
Thanks
Ron
Old Oct 26, 2008 | 10:54 AM
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mjr46
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how did you adjust the valves?? are they stud mount rockers??
Old Oct 26, 2008 | 11:01 AM
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adjusted them the way ford said to do it

adjust at TDC:
Intake: 1, 4, 8
Exhaust: 1, 3, 7

Rotate the crank 360 degrees lockwise, and adjust:
Intake: 3, 7
Exhaust: 2, 6

Rotate the crank 90 degrees clockwise, and adjust:
Intake: 2, 5, 6
Exhaust: 4, 5, 8
Old Oct 26, 2008 | 11:04 AM
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so are they stud or pedastal mount and there are two methods ford has used in the past your reply has clarified nothing also was the e-cam previously installed or all at the same time?? doe those heads have 2.02 valves if so did you check for ptv??
Old Oct 26, 2008 | 11:07 AM
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94 Cobra SVT
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stud my bad, the cam has been in there awhile

i have these heads
https://www.patriot-performance.com/...&cat=31&page=1


says 2.02" / 1.60"

Last edited by 94 Cobra SVT; Oct 26, 2008 at 11:13 AM.
Old Oct 26, 2008 | 11:25 AM
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well with a 2.02 valve and stock piston valve reliefs it is very important to have checked for ptv cause with 2.02 valves depending on the cam timing of the e-cam the valves can smack the pistons as stock valve reliefs are insufficient often for 2.02 inline valved head......so one of two things has happened #1 you bent some valves....or number 2 valves are improperly adjusted......starting with number 1 cylinder you can use the tdc methood to adjust valves = bring number 1 up on tdc and then adjust poly lock until a slight drag on push rod is felt then from there 1/4 to 1/2 turn and lock poly lock down, and do the same to exhaust valve on no. 1 cyl and from there following firing order do the same for no.3 and so on, as you move on to the next cylinder I shine a light in the spark plug hole to see when next cylinder reaches tdc.........another method is to rotate motor over until you have the valve you are adjusting = cam on the base circle for that valve to be adjusted and such is done by waiting until the exhaust valve starts to open for that cylinder then you can adjust intake valve and so forth following same method to adjust exhaust...this method takes longer but insures roller lifter is on the base circle of the cam lobe for a proper valve adjustment......oh and I hope you measured for the proper length push rod = key to having correct valve adjustment
Old Oct 26, 2008 | 11:27 AM
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where in MD are you??
Old Oct 26, 2008 | 11:38 AM
  #8  
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the push rods i needed for it were the stock ones i called them... i live in baltimore, might take it up to jpc

Last edited by 94 Cobra SVT; Oct 26, 2008 at 11:42 AM.
Old Oct 26, 2008 | 11:43 AM
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Originally Posted by mjr46
well with a 2.02 valve and stock piston valve reliefs it is very important to have checked for ptv cause with 2.02 valves depending on the cam timing of the e-cam the valves can smack the pistons as stock valve reliefs are insufficient often for 2.02 inline valved head......so one of two things has happened #1 you bent some valves....or number 2 valves are improperly adjusted......starting with number 1 cylinder you can use the tdc methood to adjust valves = bring number 1 up on tdc and then adjust poly lock until a slight drag on push rod is felt then from there 1/4 to 1/2 turn and lock poly lock down, and do the same to exhaust valve on no. 1 cyl and from there following firing order do the same for no.3 and so on, as you move on to the next cylinder I shine a light in the spark plug hole to see when next cylinder reaches tdc.........another method is to rotate motor over until you have the valve you are adjusting = cam on the base circle for that valve to be adjusted and such is done by waiting until the exhaust valve starts to open for that cylinder then you can adjust intake valve and so forth following same method to adjust exhaust...this method takes longer but insures roller lifter is on the base circle of the cam lobe for a proper valve adjustment......oh and I hope you measured for the proper length push rod = key to having correct valve adjustment
Dayum
Old Oct 26, 2008 | 11:49 AM
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I would follow method number 2 I listed as it focuses on each individual cylinder and the cam being on the base circle for proper adjustment .



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