Need Some help with head gasket replacement on a qr25de....

[Rezanate]

Hey, first of all I wanna thank whoever looks at this and responds for taking the time to. Im not a rookie when it comes to working on cars, BUT up until this point, I've only torn down small block fords, so an overhead cammer is a little bit of a different animal. I mean for the most part everthings the same, just in different places. Im hoping there are some really mechanically savy guys here who can help me, and after reading through some of the threads here, there seems to be some. Now on to the problem.

My 2.5 finally succumbed to the dreaded head gasket leak. So now Im staring at this thing, wondering if I have to take off the timing chain to remove the heads,..... anyone know for sure? Because if that's the case, then its a lot bigger job than I had anticipated. That means I need to support the engine and pull of the cover which is basically the entire front portion of the engine. Im looking at it, and Im thinking that if I can get the cams off, I should be able to pull the heads without touching the timing chain, or the oil pump/ timing chain cover. Im doing this as I type, so a quick response would be greatly appreciated.

Another thing,... I saw an ad on this site for thermagasket,... anyone ever use this in their alty??? Looks like it works good, but I've seen a million infomercials, so I take the claims with a grain of salt. The reason why I ask is that Im not bothering with machining the heads, so after I change the gasket, if it leaks again, I'd just use the thermagasket.

thanks again guys.

[Rezanate]

anyone? Im kind of in a bind as my car sits in pieces, and I need to get to work tomorrow morning....

[akashmer]

Hey what did you find out?

I looked on you tube and there is a guy who rebuilds a QR25de out of a sentra. On that he has the chain tied up with 2 zip ties to the top of the timeing chain cover.

I will be doing it this weekend I think. I have taken off the intake before to get at the butterfly valves. Yaking the head doesn't look to hard.

[Blackmobile]

sorry i'm not that savvy with engines, but it sounds to me like you're trying to get at the header, so you may want to check out the DIY header install thread: zerothread?id=440493 that should show you what you need to remove to get the header out