preith Posted June 21, 2005 Share Posted June 21, 2005 Thought I'd let you guys know about this. Seems to be a really good, if not too good, of a deal. I'm not sure how many he has in stock, but this is the 2nd auction that he's had for these. 44mm int, 38mm exh. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33621&item=7982287374&rd=1 Quote Link to comment Share on other sites More sharing options...
BlackBeaut Posted June 21, 2005 Share Posted June 21, 2005 Anyone know off hand which heads these suit? IIRC the P90 valves are shorter then earlier heads. His ad states these are 4.62" overall which doesn't work out to a very nice mm dimension. I never seem to have things I need to check measurements on to hand these days, dunno what's going on!! Cheers, Rob Quote Link to comment Share on other sites More sharing options...
aarang Posted June 21, 2005 Share Posted June 21, 2005 I'll bid on them. I'll let everyone know how they are if I win. Aaron Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted June 22, 2005 Share Posted June 22, 2005 I bought a set a few weeks ago. they fit the pre 1980 heads (N47, N42, E88, E31...) They are too long for the P90 or P79. Quote Link to comment Share on other sites More sharing options...
Dave Posted June 22, 2005 Share Posted June 22, 2005 These guys are here in Portland Oregon just a few blocks from where I live. I have bought from them in the past and have been treated well. They are a father son operation and very honest. You might do better by contacting them directly.They have a webpage http://www.engnbldr.com Quote Link to comment Share on other sites More sharing options...
DemonZ Posted June 22, 2005 Share Posted June 22, 2005 I bought a set. They seem decent, but the exhaust is oversized by 3mm. They are the longer non-p90 length. Not sure if they are worth the trouble of fitting new seats and extra machine work. Quote Link to comment Share on other sites More sharing options...
preith Posted June 22, 2005 Author Share Posted June 22, 2005 I bought a set. They seem decent, but the exhaust is oversized by 3mm. They are the longer non-p90 length. Not sure if they are worth the trouble of fitting new seats and extra machine work. There has been other posts about clearance issues and running the 38mm valves as opposed to the 35's. I've never used 38's, but I guess you can get away with recutting the the stock seat, but the valves have a tendency to interfere with the cylinder walls, they have to be notched. EDIT: Also, I ordered a set and will let you guys know how they are. Quote Link to comment Share on other sites More sharing options...
BlackBeaut Posted June 22, 2005 Share Posted June 22, 2005 Thanks for the info guys. I've got an E88 and a N42 head to play with so these are fine. Also I'm going for an 88mm bore so I guess 38mm valves should clear those OK without extra notching? Cheers, Rob Quote Link to comment Share on other sites More sharing options...
ecp48 Posted June 22, 2005 Share Posted June 22, 2005 Hey guys, I bought the first set to come up for bid. Will fit the N42 and earlier heads or the shaved P90 with Shims (.080). Nicely tapered under the head. I compared against stock replacement valves @ 10 - 12 dollars a piece on Victoria British and went for them. They do require the exhaust seat to be recut for the larger valve. I am also told, that they will not increase flow significantly without some pocket porting, i.e.: valve bowl cleanup. Washington State. Here is the response I got to my questions prior to purchase. Who Made them, I can't find EPN on the Web? "EPN is my company, Engine Parts Network, inc. We have manufacturers produce for us to our spec. Our valve supplier is BBB, they are located in Argentina. They are a pure manufacturer which means they have no house brand, they make Milodon, some Ferrea, Qualfast, and many others. Ted(engnbldr)" (Ted Stanwood) I noticed that the valve length differs from that in the manual? "Different manufacturers measure differently of course. Some from the expected point of seat contact, some use actual OAL, some measure from the inside of the dimple. These are simply stock OAL to make it easy, my spec sheet says 4.57" & 4.62". I had quite a few folks ask me for them when we started producing the Toyota 20R & 22R valves, so I had a couple thousand made to see what happens." Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted June 22, 2005 Share Posted June 22, 2005 Should contact them and see about getting replacement P90/P79 valves... I am sure there is a market for them Quote Link to comment Share on other sites More sharing options...
Dave Posted June 23, 2005 Share Posted June 23, 2005 Since they are a neighbor if there is enough interest I will go talk to Ted or Tod and see if they will do a group purchase or give a discount to HybridZ members on their products. Quote Link to comment Share on other sites More sharing options...
Dat260 Posted August 9, 2005 Share Posted August 9, 2005 Hi Guys Any updates on these valves? I want to purchase a set. Cheers, Ari Quote Link to comment Share on other sites More sharing options...
spotfitz Posted August 9, 2005 Share Posted August 9, 2005 I would be interested in the shorter SS valves aswell. Quote Link to comment Share on other sites More sharing options...
preith Posted August 11, 2005 Author Share Posted August 11, 2005 I did buy them and all I can say is they look to be real good. The cylinder head is still at the machine shop so I've yet to run it, but no worries. To anyone considering buying them, I say go for it. Quote Link to comment Share on other sites More sharing options...
Sleeper-Z Posted February 1, 2006 Share Posted February 1, 2006 Sorry to bring up an old post, but does this guy still sell these? Looking for another alternative than arizona z car (nothing wrong with them). If not, are there any other sources for SS valves, just trying to see what my options are. Thanks, Steven M. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted February 3, 2006 Administrators Share Posted February 3, 2006 Yes, he does still sell them. I am building/porting/machining “preiths” head right now and installing those valves. I even ordered another set for another Maxima N-47 project from them earlier this week, delivered NEXT day as they are just across town from me. As a side note, for you guys running up to 2mm over bores on your L-28 blocks, that 38mm exhaust valve WILL crash into your block! In mocking up Phils head on a block, those 38mm exhaust valves hit the block deck at only .340”-.350” lift. Options are to either have the exhaust valve turned down to a smaller diameter, or extensively “eye-brow” the block. Depending on how much lift your cam has and how far up the bore your rings sweep, will dictate if that is even feasible. Typically, Turbo pistons have the ring pack further down the piston which allows for little deeper eye-browing as compared to N/A pistons. For Phils head, I turned the heads of the exhaust valves down 2mm to 1.42” This will clear a 1mm over bore L-28 and leave just enough clearance to make up for any shift that may happen between deck dowels and the head as they will shift up to 1mm and that also keeps the head builder from sweating bullets when the owner turns the key to “start” for the first time…. Quote Link to comment Share on other sites More sharing options...
madkaw Posted February 3, 2006 Share Posted February 3, 2006 My machinist was impressed with the quality of these valves. But he wasn't impressed with my research, since I bought these for my 2.4 block-oopps(i'm just a back yard mech). Needless to say we had some clearance issues so we wound up turning down the the head to a 35 and notching the block.There is no way they would have gone in my 2.4. I also bought the guides from the same guy and again my machinist liked the concentricities of the guides. As far as seats go, he made his own ber.copper to match the valves! Quote Link to comment Share on other sites More sharing options...
preith Posted February 3, 2006 Author Share Posted February 3, 2006 Here's an auction from what I beleive was the same vendor I originally bought them from. http://cgi.ebay.com/ebaymotors/DATSUN-L20B-O-S-STAINLESS-VALVES-w-bronze-guides_W0QQitemZ8035512819QQcategoryZ33621QQrdZ1QQcmdZViewItem He's in Ohio, but per a previous post, they're available from a place in Portland http://www.engnbldr.com/ As Braap (Paul) eluded to, he's working on installing these on a cyl. head for me. I opted for having him turn them down just a bit, so this way I don't have to worry about notching the block; the .560 lift cam makes this more difficult. They'll still be slightly larger than stock too. I don't want to give too much away, but the completed head will be quite nice.... Quote Link to comment Share on other sites More sharing options...
Guest norm[T12SDSUD] Posted February 3, 2006 Share Posted February 3, 2006 I wonder if some of the expected airflow gain from the larger valve is actually negated by it's proximity to the cylinder wall? Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted February 3, 2006 Administrators Share Posted February 3, 2006 Norm, you are eluding to valve shrouding? Yes eye-browing the block/unshrouding the valves “in the block†is worth just a little bit in terms of air flow, but the gain realized in doing that is really minuscule and that would only be on the super serious crazy engines. The camber walls in the head as you already know, is the where the biggest restriction to air flow lies, (valve shrouding), therefore that is where we focus our efforts, then we get crazy in those square exhaust ports… Pictures to follow in the next couple days or so… Quote Link to comment Share on other sites More sharing options...
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