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Very nice work so far, I'm looking forward to seeing the results. Also interesting to see the difference of the combustion chamber size vs the b16/itr head that I have. I can see now how it contributes to higher compression, the little "quarter moon" areas behind the intake and exhaust valves are open in mine. (B16)
Installed the valves after running 1000 grit wet paper over the chambers. I didn't bother polishing them. CC'd the chambers, came out to 48 cc, took quite a bit out (42ish being stock),. Ran numbers and i'll be right at 11:1, which is where I wanted to be in the first place. Trading compression for air flow is probably better anyway.
Going to try and degree the cams I have, both the stock GSR and Pro1's. See if I can use the ATI damper as it has 360° marks on it. Have to figure out how to install the dial gauge on the head first.
Originally Posted by DumpdEJ6
Very nice work so far, I'm looking forward to seeing the results. Also interesting to see the difference of the combustion chamber size vs the b16/itr head that I have. I can see now how it contributes to higher compression, the little "quarter moon" areas behind the intake and exhaust valves are open in mine. (B16)
I'm going in blind to what it's going to do. Hope it helps the engine breath better at higher RPM.
What are your plans?
Are you lapping the valves yourself? Are you going to do any reshaping or polishing?
There's a DSM YouTube channel I've been watching where the guy redoes is whole head. Pretty interesting stuff. Glyptal coating, casting flaw removal, blending, polishing, channeling, lapping, measuring, etc. the channel is: Jafromobile
It stands for Lobe Separation Angle. I'm only half awake right now but isn't it the measured angle between lobe centerlines or something like that? I should know this stuff but my Crower 402 cams didn't need to be degreed so I never really got into it.
It stands for Lobe Separation Angle. I'm only half awake right now but isn't it the measured angle between lobe centerlines or something like that? I should know this stuff but my Crower 402 cams didn't need to be degreed so I never really got into it.
LSA is the measured Center lines added together, then divided by 2. It's an idea of how much overlap there is.
I measured because I wanted to have a baseline for later.
Here's the valve cover after a quick 6 hours of work.
It's an old valve cover that wasn't taken care of. When I got it the cam gear cover was broken, and there was paint missing from (most likely) solvents. There's still a lot of scratches, pitting and some stains I can work on later when I have more time. Also, the raised lettering that I shaved off is still visible. Not sure what's going on there, but with a lot more sanding I think I can get rid of it all.
Im going to shave my VC as well. Your build looks great, in the middle of stock piling parts for a build myself. Keep up the inspiration!
Apreciate it, thank you. I have one more round of parts to finish this engine. Couple bolts for the cam caps, couple cam seals, spark plugs and break-in oil.
Have fun with your build.
Originally Posted by 94 Civic Si
Nice photography!
That last shot was a happy surprise. The valve cover is bright in photos now, I was trying to show the polish. Did a few shots and the valve cover was white. Moved the flashes around and was able to get the cam gear reflextion.
05-04-2017, 06:22 PM
Re: From the Ground Up. Build Thread.
