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Cobra Forums
The Terminator
Engine/Tuning
Head Gasket Replacement
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<blockquote data-quote="03svt_snake" data-source="post: 15656860" data-attributes="member: 186918"><p>Hello Everyone, </p><p></p><p>New to the forum, this is my first post. I have a 1994 Cobra, but picked up a 2003 Cobra a couple weeks ago. I got kind of hosed on it because I bought it off eBay with only 47,000 miles, but it had an undisclosed head gasket leak on the passenger side. </p><p></p><p>The previous owner replaced the driver side head because of loose valve issues about a year ago, but despite him swearing up and down he did, I don't think the passenger side head was pulled off to check for issues or replace the head gasket on that side. </p><p></p><p>About a week ago I pulled all the plugs and found water on the number one plug and a couple days ago I took it to a shop and had them do a block test. It came back positive for combustion gases in the coolant and you can smell it in the overflow. </p><p></p><p>I think the shop that tuned the car for the modifications it currently has made the timing way too advanced even for 93 octane, which is probably what caused the leak.</p><p></p><p>Anyways, I'm wondering what is the best way to do this job? I'm guessing it is to drop the whole engine, but can it be done with the engine still in the car or pulling it out the top? </p><p></p><p>I have access to a lift at my parents' house, but possibly not for a couple of months because of another car occupying it. I'd like to get it done sooner if possible. </p><p></p><p>Also, what shop is better for having someone refresh the heads on these cars? MMR or Modular Head Shop (MHS)? MHS is way more expensive, but some of the reviews for MMR online scare me. </p><p></p><p>I'm pretty new to the modular scene, but have been working on cars for 12 years. </p><p></p><p>I couldn't find a how-to on this job, which is why I'm posting it here. Thank you in advance.</p></blockquote><p></p>
[QUOTE="03svt_snake, post: 15656860, member: 186918"] Hello Everyone, New to the forum, this is my first post. I have a 1994 Cobra, but picked up a 2003 Cobra a couple weeks ago. I got kind of hosed on it because I bought it off eBay with only 47,000 miles, but it had an undisclosed head gasket leak on the passenger side. The previous owner replaced the driver side head because of loose valve issues about a year ago, but despite him swearing up and down he did, I don't think the passenger side head was pulled off to check for issues or replace the head gasket on that side. About a week ago I pulled all the plugs and found water on the number one plug and a couple days ago I took it to a shop and had them do a block test. It came back positive for combustion gases in the coolant and you can smell it in the overflow. I think the shop that tuned the car for the modifications it currently has made the timing way too advanced even for 93 octane, which is probably what caused the leak. Anyways, I'm wondering what is the best way to do this job? I'm guessing it is to drop the whole engine, but can it be done with the engine still in the car or pulling it out the top? I have access to a lift at my parents' house, but possibly not for a couple of months because of another car occupying it. I'd like to get it done sooner if possible. Also, what shop is better for having someone refresh the heads on these cars? MMR or Modular Head Shop (MHS)? MHS is way more expensive, but some of the reviews for MMR online scare me. I'm pretty new to the modular scene, but have been working on cars for 12 years. I couldn't find a how-to on this job, which is why I'm posting it here. Thank you in advance. [/QUOTE]
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