No Vacuum at lower RPM (RB25DET NEO)
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Well, if it wasn't a GTR I'd say that killing an RB is a perfect opportunity to put in a proper engine. In your case, proximity to Brabus and AMG V12s would be a no brainer for any RWD Skyline engine death event. In my case, because my car is my daily, anything that I do wrong that means I have to do it again is both an absolute pain in the arse (simply having to do it again), and also a doubling of the pain associated with having the car off the road to work on it. I would class a botched head gasket install as not being "engine death causing". More a case of "f**k it's still leaking!" -
By joshuaho96 · Posted
Yeah, this is more stuff like transmission/clutch R&R. Intake manifold R&R. It's not super complicated, but each step matters and you need to be careful and patient. I have heard stories for example of people not figuring out the super coppermix twin plate orientation and getting it wrong on assembly. Removing a cylinder head and putting it back in once it's machined isn't that hard, following torque sequence to install some cams isn't that hard either, but somehow I've seen a lot go wrong between here and there. Scraping off all gasket material isn't that hard either, but I've seen shops ruin heads by using a roloc disk that was too aggressive. -
There is some shops in Germany that have quite a bit of experience with JDM performance 4-wheelers. I think if it actually comes down to it I'd let one of them do the head gasket. Killing an RB26 is too expensive a risk just to save some money by doing it yourself. -
There are certain tasks, like replacing head gaskets, where it is very much best to already know what you are doing, and if you are not already an expert, then the next best thing is to have an expert around to help it get done. Little annoying checks and steps that are easy to forget or not interpret the results of properly, etc etc. It is hard to convey that to someone as a lesson prior to taking on a job, because there can be a whole list of "if you see this then it means that", or "if this is what you find then you will need to do these other 4 steps first". All the little bits of knowledge around sealant choice (ie, sealant at all? or no sealant? sealant only in certain parts of the gasket? sealant for this type of gasket but not that type of gasket? etc etc) cleanliness checks and methods, surface straightness and finish checks and methods, etc etc, all combine to mean that people who have done many of the same type of job will struggle less to get a good result than someone who hasn't done it before. I've been around this stuff since forever. But I will still consult with my expert(s) before taking on the big stuff with higher risk profile.
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Well if I end up having to do the head gasket I will certainly find the necessary tools and instructions before beginning... Let's hope it won't come around. Definitely. Depends on the job but I think "if you want it done right, do it yourself" applies almost every time
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