So, a friend of mine just bought another F22B engine for his Accord. We started tearing it apart to rebuild it with turbo gear tonight, this was the first time I've ever really completely pulled apart an engine without anyone more knowledgable than myself (I did my engine with my pops).

I'll try to get some pictures of this thing since it's pretty cool and different, but for now you'll just have to listen.

When I got there they already had the head off, oil pan off, girdle off, etc. We needed to get the crank pulley off... yay for 280ft/lb torque specs! [:@]

Travis flips over the engine and spins the crank and shows me these two weird *** looking shafts spinning with the crank. Funny, I've never seen THAT before. I hadn't a clue what the hell they were, no engine I have ever seen had them in there. They were driven by gears off the crank, and it looked like they needed to be synced correctly with the crank. Great, if a timing belt isn't hard enough, we have these random *** things to time too? Lol.



Parts 11-12 are the shafts I'm talking about.

Did some research on them, turns out they're balancing shafts. They counter act vibrations from the crank shaft so that you don't feel them in the steering wheel. They're in the H22 and F22 VTEC engines apparantly, probably due to the high revving and long strokes.

So anyway, what a fun deal THEY were coming out. The first shaft was driven by a set of gears like a transmission in order to reverse it's direction, the other was driven by it's own pulley to spin the same way as the crankshaft. I just thought this was pretty cool, definititely made me put the thinker on.

Anyway, got everything out of the block, it's going off to the machine shop for a much needed cleaning, the crank will be balanced, and the cylinders bored and honed ready for piston install.

Moving on, as we were finishing up the block Sam started pulling the head apart so that we could take a look at the CAMshaft. He's still learning, so he just pulled all the bolts out. Later we would find this to be a huge mistake. Without looking, I pryed the rocker arm assembly from the CAMshaft only to be greeted with about 10 springs expanding and the entire rocker arm assembly shooting in about 5 directions. Moooootherrfuucker. Not only that, but this rocker arm assembly is complex as hell, it took us over an hour and a half to put it back together correctly. What a mess that was, and I didn't even get to look at the cam lol.

When I got home I asked my dad how you're supposed to take off the rocker arm assembly without it doing that, and he just goes "well, didn't you leave the bolts in their holes like I did with your motor?"

..."Nope"

Learned a lot tonight, I'm excited for this build. We're gonna build the engine and turbocharge the Accord, hopefully should put down 300+ on pump gas when we're done. Gonna be a cool *** build.

I'll try to get some pics for everyone later... may have to turn this into another project thread but we'll see as it's not a Civic. I've also got a project with Travis' GSR coming along too, hoping for 350 pump gas and 500whp race.

 

yes those are balancing units. i just used some touch up paint and marked were they were when you stopped the car, they make a block off plate for those.

 

Yeah, supposedly they're a BITCH to time. Oh well, will have to do some research on it for sure.

 

thats crazy that theyr in the h22, iv never seen them. cool.

 

Damn man, I can only imagine the look on your face when the head internals went flying

Sounds like a hell of an experience

 

We been dealing with those for years in J body engines, you can block them off and get some nice power increases, and since you are balencing the crank you won't really need them

 

Want to know how to put a rocker arm assembly back together for a 95 Accord EX? I can tell you, in excruitiating detail. [8D]

The structural way those balancing shafts were designed it looks to be the only reason they are there is to counteract weight shifting in the engine itself, in other words to keep vibrations from the cabin and driver. I have a feeling we're putting solid engine mounts in this car anway, so who the hell cares? They seem to do the engine itself absolutely no good but to rob power... hmm.

Need to do some research, I don't think we can even put forged pistons in this engine. I believe they have to be the Mahle pistons.

 

ahhh, yes. learning about engine internals the hard way!! [8D] always fun...

I want to see the pictures when you get them, the diagram doesn't really show how they are attached...

 

God I hate balance shafts. My are chain driven and I will be removing the chain very soon...should be a nice 5-10hp gain.

 

I can tell were already in for a great thread! I love seeing these builds Sov.