Jss240z Posted May 19, 2016 Share Posted May 19, 2016 Hello, I'm milling a p79 head .080" and shimming the cam towers and springs the same for correct geometry. Taking the valves I have out of my n42 (which are fairly new) , springs and Schneider cam. My question is should I be replacing my rockers for new ones as well as lash pads? Quote Link to comment Share on other sites More sharing options...
Leon Posted May 19, 2016 Share Posted May 19, 2016 Keep your rockers matched to their respective cam lobes. Lash pads will depend on your wipe checks when you set the new head up. Quote Link to comment Share on other sites More sharing options...
HuD 91gt Posted May 20, 2016 Share Posted May 20, 2016 Someone will correct me I'm sure. It's common knowledge a set of rockers is set with a camshaft. If said camshaft is moved to another head, which places the wear pattern in a different spot due to lash thickness etc, those rockers are no longer matched with the cam. True, or false? Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 20, 2016 Author Share Posted May 20, 2016 I've heard of people not replacing the rockers and being fine. But that's just them saying. With the .08" longer valve I'll be using, shaving the head by the same amount and shimming , the valve train should be close. Moving everything back to the same spot height wise. Guess I should not be cheap and get new ones just in case. Just wanted to know if anyone had a definitive answer one way or another. Quote Link to comment Share on other sites More sharing options...
Leon Posted May 20, 2016 Share Posted May 20, 2016 Someone will correct me I'm sure. It's common knowledge a set of rockers is set with a camshaft. If said camshaft is moved to another head, which places the wear pattern in a different spot due to lash thickness etc, those rockers are no longer matched with the cam. True, or false? Used rockers are fine to reuse (even preferred) IF there isn't a pronounced flat-spot in the middle of the rocker face and the outer edges aren't worn down enough to grab your fingernail. This is what I remember from a discussion with Ron Iskendarian. Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 23, 2016 Author Share Posted May 23, 2016 Used rockers are fine to reuse (even preferred) IF there isn't a pronounced flat-spot in the middle of the rocker face and the outer edges aren't worn down enough to grab your fingernail. This is what I remember from a discussion with Ron Iskendarian. Some of my rockers are actually worn like that... Good knowledge for future use though. I contacted Eiji from Datsun spirit (awesome service!) and he sells them pretty cheap compared to others I've check so I ordered a set. Quote Link to comment Share on other sites More sharing options...
Leon Posted May 23, 2016 Share Posted May 23, 2016 Some of my rockers are actually worn like that... Good knowledge for future use though. I contacted Eiji from Datsun spirit (awesome service!) and he sells them pretty cheap compared to others I've check so I ordered a set. Nice! Give them a good visual inspection when they come in. I've seen quality issues with the pads being sintered off-center in the Sealed Power rockers I got, hence why I bought two Nissan ones. Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 23, 2016 Author Share Posted May 23, 2016 The actual quote I received from him stated "new Oem Nissan rockers". So I'm guessing (hoping) there good quality. Quote Link to comment Share on other sites More sharing options...
Leon Posted May 24, 2016 Share Posted May 24, 2016 The actual quote I received from him stated "new Oem Nissan rockers". So I'm guessing (hoping) there good quality. I see, I was assuming you bought ITM rockers. How much does Datsun Spirit charge for new OEM Nissan rockers? Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 24, 2016 Author Share Posted May 24, 2016 I see, I was assuming you bought ITM rockers. How much does Datsun Spirit charge for new OEM Nissan rockers? I don't have the quote in front of me but I believe less than HALF of what I could find anywhere else. I'll have to check again later, but it was substantial. He also did not have the lash pads I needed in stock (after he mistakenly said he did) so they are being shipped straight from Japan to my place. I'm seriously blown away by his service. Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 24, 2016 Author Share Posted May 24, 2016 Don't quote me on that till I check the actual quote though... I could be wrong. Often am! Quote Link to comment Share on other sites More sharing options...
Jss240z Posted May 25, 2016 Author Share Posted May 25, 2016 Yes I was way off on the price, sorry. 465 for the set of 12... Still cheaper than what I can get though Quote Link to comment Share on other sites More sharing options...
Leon Posted May 25, 2016 Share Posted May 25, 2016 Thanks for the info. Quote Link to comment Share on other sites More sharing options...
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