Yay Head Gasket Replacement
I own a 2003 (Gen 5) Camry with a good 245,000 miles on it. Sadly, after nearly 20 years of service it needs some maintenance. In the t junction in between the head, block, and timing cover, behind the alternator, a miniscule leak has sprang. Judging by the amount of gunk there it has been leaking for a little while. I've got a second car so no rush and would like to do this job. I've gathered all the info below on this job.
I have done the timing belt and throttle body rebuild on another more simple car and believe I can go through with the job. Due to the fact that the engine has never been opened, I believe it would be lightly affected by the stripped head bolt problem. When you put steel bolts in a soft aluminum block the steel bolts win and shred the block, right. The repair for this is the NS300L helicoil repair kit. Also I will install some APR head studs to replace the bolts and make it easier to take apart when I swap pistons in 2 to 15 years. Also, there is two options for head gasket: Improved design and old design. I believe the difference is gasket thickness and bore size. Old design will give a slightly better compression ratio due to it being thinner and bigger bore to compensate the bigger piston rings. I will be using an old design felpro multi layer steel gaskets. To remove the head you need to remove timing cover, I think. To remove the timing cover you also need to remove the oil pan. And to get to all those you will need to remove a couple motor mounts, I believe. so will need those gaskets as well. Since this car has never had a motor mount replaced I will replace those as well. Should I also buy a new serpentine belt while I'm in there? Feel free to correct me if I am wrong anywhere or provide more input Toyota experts. Or even recommend better quality parts, I haven't bought anything yet, this is my planning stage. Parts list: Felpro old design head gasket kit NS300L helicoil thing APR head studs for 2AZ OEM thrust mount, transmission mount front and rear, and motor mount Felpro Oil gasket Serpentine belt? |
Toyotanation.com has a thread on this issue.
https://www.toyotanation.com/threads...thread.325124/ Might look into Time-Serts which is supposed to be what Toyota uses. |
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