Head damage, is it repairable? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

reverend_sean · 10-17-2005, 06:05 PM

So I was cleaning up a DET head that I purchased and realized that there is damage to a cam seat(journal, race, ?). I know nothing about the life of the head. Is this kind of damage repairable, is the head totally shot, could it be run if the rough parts were smoothed out and polished? The scoring does go into the the metal a tiny bit, but not a ton.

reverend_sean · 10-17-2005, 06:21 PM

here is a link to more pics.

http://www.kodakgallery.com/BrowsePh...photo_count=5&

reverend_sean · 10-18-2005, 10:05 AM

doesn't anyone have a clue? Little help here guys. bump for no love

TheWolf · 10-18-2005, 11:53 AM

well that's caused by particulate matter entering the oil system from the spun rod or main bearing in the lower end... grinding away at the cam and head, releasing more material into the system and then cycling through again. Um. Yes and no on the fix. You can try and get your cam journals align honed and get that mess worked out but it's not cheap and its difficult to tell from the pictures how deep the scorring is. That will determine it's use. You can get that part welded up and the journal align bored and honed but that would probably run around $500 and you could just get another head core. I thinks you got screwed. Hope you have a good refund policy where you got the head from.

Al_S14 · 10-18-2005, 01:07 PM

i wount not bother fixing it .. dont think its duable at all since without being able to put different size bearings and then check oil clearance it pretty much impossible. id replace the head.
PS i do have one for sale if you need it.

reverend_sean · 10-22-2005, 12:27 AM

It is actually a DPR head. Sucks even more!!!

10-17-2005, 06:05 PM	#1
reverend_sean Leaky Injector Join Date: Apr 2005 Location: Pittsburgh, PA Age: 50 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	Head damage, is it repairable? So I was cleaning up a DET head that I purchased and realized that there is damage to a cam seat(journal, race, ?). I know nothing about the life of the head. Is this kind of damage repairable, is the head totally shot, could it be run if the rough parts were smoothed out and polished? The scoring does go into the the metal a tiny bit, but not a ton. __________________ '89 S13 Last edited by reverend_sean; 10-24-2005 at 10:14 PM..

10-17-2005, 06:21 PM	#2
reverend_sean Leaky Injector Join Date: Apr 2005 Location: Pittsburgh, PA Age: 50 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	here is a link to more pics. http://www.kodakgallery.com/BrowsePh...photo_count=5& __________________ '89 S13

10-18-2005, 10:05 AM	#3
reverend_sean Leaky Injector Join Date: Apr 2005 Location: Pittsburgh, PA Age: 50 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	doesn't anyone have a clue? Little help here guys. bump for no love __________________ '89 S13

10-22-2005, 12:27 AM	#6
reverend_sean Leaky Injector Join Date: Apr 2005 Location: Pittsburgh, PA Age: 50 Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	It is actually a DPR head. Sucks even more!!! __________________ '89 S13

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10-18-2005, 11:53 AM	#4
TheWolf Zilvia FREAK! Join Date: Aug 2005 Location: Orange Park, FL (Jax) Posts: 1,468 Trader Rating: (0) Feedback Score: 0 reviews	well that's caused by particulate matter entering the oil system from the spun rod or main bearing in the lower end... grinding away at the cam and head, releasing more material into the system and then cycling through again. Um. Yes and no on the fix. You can try and get your cam journals align honed and get that mess worked out but it's not cheap and its difficult to tell from the pictures how deep the scorring is. That will determine it's use. You can get that part welded up and the journal align bored and honed but that would probably run around $500 and you could just get another head core. I thinks you got screwed. Hope you have a good refund policy where you got the head from.

10-18-2005, 01:07 PM	#5
Al_S14 BANNED Join Date: Jan 2005 Location: Chesapeake VA Age: 40 Posts: 405 Trader Rating: (0) Feedback Score: 0 reviews	i wount not bother fixing it .. dont think its duable at all since without being able to put different size bearings and then check oil clearance it pretty much impossible. id replace the head. PS i do have one for sale if you need it.