joem64 Posted August 19, 2019 Share Posted August 19, 2019 Because I haven't seen any videos talking about lash pad sizing, cam degreeing, degree wheels, or TDC on an L28, I figured I'd take a shot at it. Please excuse my video production qualities or my lack of expertise. Like i said, just wanted to take a shot at these subjects. Please comment if i've missed something big or small. thanks joe lash pad sizing.... https://www.youtube.com/watch?v=TQSf2TinWc4&t=215s TDC short block....https://www.youtube.com/watch?v=SvcXhv-HZ_0 TDC validation with head installed ....https://www.youtube.com/watch?v=09AJpZ9z0EY Intake cam lobe center validation... https://www.youtube.com/watch?v=895VzDZA8pA Quote Link to comment Share on other sites More sharing options...
rossman Posted August 20, 2019 Share Posted August 20, 2019 Thanks for sharing! You asked for comments so here are a few.... Who is your intended audience? Novices? If so, I would recommend covering more of the basics. Like setting up from the beginning. I the first video what you are really doing is verifying the cam wipe pattern after you installed the correct lash pad. Was it just blind luck that you got the correct lash pad the first time? How did you pick the lash pads you are using? You should address that in your video to be helpful in "lash pad sizing." Quote Link to comment Share on other sites More sharing options...
joem64 Posted August 20, 2019 Author Share Posted August 20, 2019 I guess my intended audience is DIYer's or anybody who's looking for a little more info. you're right about the lash pad sizing. It wasn't blind luck, maybe a decent guess. I made sense that with the new cam having the same base diameter that a closer to stock pad would be required. I thought it might help me figure it out by going thru it and explaining it. I'm always open for comments and help. joe Quote Link to comment Share on other sites More sharing options...
rossman Posted August 21, 2019 Share Posted August 21, 2019 Check out this thread: Quote Link to comment Share on other sites More sharing options...
joem64 Posted August 21, 2019 Author Share Posted August 21, 2019 very nice. Gotta love the spring/valve height measuring gizmo!! Looks like a lot welding there as well. joe Quote Link to comment Share on other sites More sharing options...
rossman Posted August 22, 2019 Share Posted August 22, 2019 Yah, it's a very informative thread. About half way down it tells you how to select lash pad thickness on a budget - with a standard aftermarket lash pad (flat bottom) and small pieces of feeler gauge. Quote Link to comment Share on other sites More sharing options...
rossman Posted August 22, 2019 Share Posted August 22, 2019 By the way, what core did your cam builder use? It doesn't look like a regrind. Quote Link to comment Share on other sites More sharing options...
joem64 Posted August 22, 2019 Author Share Posted August 22, 2019 I believe it is new, not an original nissan cam. The width of the lobes is quite different. you agree?? joe Quote Link to comment Share on other sites More sharing options...
rossman Posted August 23, 2019 Share Posted August 23, 2019 It does look new, which leads me to suspect it's a CWC cam core. As far as I know there are only two cam cores - Nissan, denoted by "JAPAN" cast on the core, and aftermarket denoted by "CWC." But, I could be completely wrong. I do know that CWC cam cores are not hardened correctly and fail early in life By the way, the experts on these engines typically communicate on the Facebook Group "Church of the L Series." Go there if you want more opinions. Like any social media site, you have to filter thru those who think they are experts and those that are experts. Quote Link to comment Share on other sites More sharing options...
joem64 Posted August 23, 2019 Author Share Posted August 23, 2019 Thanks for the reply and info. I did not see any 'cwc' marked anywhere on the cam. Back journal is stamped 'erson', '280n' and '1187'. I could take the cam to my local machine shop, they should be able to measure hardness. I'll check out the FB page. thanks again joe Quote Link to comment Share on other sites More sharing options...
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