Sunday, April 20, 2014

Reading Rainbow

It might look like I am not doing doing a lot at the moment, well because I am not.
The last post was sitting here for two weeks before I published it. Again this is a slow project.
I am actually reading quiet a bit. This might sound odd, but I have the Hayens manual and I have the Factory Service Manual and I am not reading those.
What I am reading is this classic. Frank Honsowetz - How to Modify Your Nissan & Datsun OHC Engine
 This might sound like a funny or odd thing to read, but honestly it isnt.
So far I am a quarter of the way through the book, and he does talk about the Datsun/Nissan L4 and L6 OHC motors, he really seems to love the 4 cylinder motors but he does completely miss the RB series engines, and I think that is before they came in both Dual and Single overhead cam. Either that or the engines were very popular here in the states because they seem to be prevalent in the Nissan Skyline, and that car was completely unavailable in the US. Though it is a pretty common motor swap into the older 240z cars. 
I have also decided, after the last post, to do a full engine pull and rebuild. I have a garage so why not just pull it out. 
Some other reference material I am using is 
These references have helped me figure out the basics about how to remove the intake manifold and the ever popular debate about what type of oil to use in the car after I get it rebuilt. (I'm going to go against tradition and use Mobile1 synthetic, just for the record) 

Also, trying to source parts on the 30+ year old car, ebay has been a huge help as well. Just be specific what you are searching for, and expect some junk yard worthy parts that need to be cleaned up. 
I live in an area where I havent been able to find any good junkyards. 

This is just a simple time.

Sometimes, we have simple plans to make things better.
I had those plans then it bit me when I was putting the intake manifold back in.
I was hoping to have this happy blog post that everything just went back in place without issue, and that the car started right up, and maybe of a video of it running and doing the minor adjustments.
I wish I could tell you that dear reader but alas I cannot.
Turns out there are two broken studs in the head, one on each side of the exhaust, along with two holes that need to be re-tapped. One on the shared bolts and one of the header bolts.
So I have been looking up videos on how to do get broken studs out, and how to re-trace bolts, and it looks like I am going to take the head to an engine rebuilders to have the removed, because no matter how much I want to, I cannot do it all.
Also, I had to buy the chain shim tool, from amazon just to hold the timing chain.

As for why there was not a weekly update, this is a slow project, I am not giving all of my free time to it, I am not going overboard trying to get it running by trying to get it running quickly, I would rather do it right.

As for doing it right, here is my first mistake, and its a painful one.
I bought a head from Craigslist, an n47 because I want to see if i can function at the ~10:1 compression that is listed, and see if it gives me that kick in the seats that I am wishing for.
It was dark, I bought it from a guy a few miles away, and it was in his shed.
I missed the crack on it.
See it? Right there? Bottom of the cam tower?
I completely missed it, and it was not a cheap mistake.
So what to do now?
Tuck my tail between my legs and give up?
Hide from the world because I am not perfect?
Nope, not even a little. I am owning up to this mistake. Yeah I do not like it, and no it was a craig's list deal, I wont even try to get my money back, because that would be useless.

I have been told that I cannot swap the cam towers because "they are factory machined when the engine was built"
I am having a hard time with this one. This was not a multi-hundred thousand dollar sports car. It was an economy sports car.
So with me luck dear reader, "Allons Y!"