Derek Posted August 26, 2021 Author Share Posted August 26, 2021 On 8/26/2021 at 10:45 PM, rturbo 930 said: There's an article about the KN20 head on Road and Track Expand You beat me to it It was a lot better than I was expecting and mostly accurate. I'm glad they kept the HybridZ origins in there and a link to the page also. Quote Link to comment Share on other sites More sharing options...
clarkspeed Posted August 27, 2021 Share Posted August 27, 2021 Accolades and recognition will never be overstated for a project of this magnitude performed by 1 person. Quote Link to comment Share on other sites More sharing options...
Derek Posted August 28, 2021 Author Share Posted August 28, 2021 I’m sure OSHA would have no complaints with anything in this picture:) Now that I have a surfacer I’ve decided to play around with CC’ing chambers after I make my final pass. When I originally modeled the chamber in 3D I left a 1mm straight wall plus machine allowance for the builder. The reason for that was to create a known steady surface area if you wanted to really dial in the chamber volume. A .010” surface cut will remove approximately 1.3 CC’s. The problem is Even though there are seats in the head you can’t put valves in since the guides are not sized and even if you could they would sit proud of the seat since they are not angle cut. So I machined out some plastic plugs to sit as close as I could to flush with the seat face. Not perfect but it's as close as I'm going to get. I almost look like I know what I'm doing Actually this isn't part of my normal operations so I'm still in the "get fluid everywhere but where you want it" mode. Right now the math is following pretty closely to the actual measured chamber size. Not sure what my ultimate goal is since I have no plans on hitting a target CC when it leaves the shop. Ideally in my thinking you would do the valves and make your final surface cut and CC the chambers. Then you would order pistons designed to meet your CR goals. The problem is that can add months to a build. I’m basically grabbing data to see how much variance there is from head to head. I think that ordering pistons based on a certain CC chamber and then have the builder surface and CC to dial it in will be the safest approach. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted August 30, 2021 Share Posted August 30, 2021 What pistons are you using? Quote Link to comment Share on other sites More sharing options...
Datz44 Posted September 29, 2021 Share Posted September 29, 2021 Safety is the key factor to having happy customers. Keep up the remarkable work horny Zed guy, Derek! Quote Link to comment Share on other sites More sharing options...
Tony D Posted May 10, 2022 Share Posted May 10, 2022 On 8/27/2021 at 1:43 AM, clarkspeed said: Accolades and recognition will never be overstated for a project of this magnitude performed by 1 person. Expand "One?" Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 23, 2022 Share Posted August 23, 2022 I'd love to see Richard Holdener get a hold of a Datsunworks head. Easy for me to say, but I'm gonna say it anyway, because I've been following him for years now and he knows his shit and has a huge audience. Quote Link to comment Share on other sites More sharing options...
A to Z Posted December 5, 2022 Share Posted December 5, 2022 I just returned from a vacation in California. While there I went over and talked to Deve Rebello. I know you work with him on these heads. A short talk with him sold me on your Datsunworks head over the OS Giken head. Keep up the good work! Quote Link to comment Share on other sites More sharing options...
Derek Posted December 5, 2022 Author Share Posted December 5, 2022 Thanks. You can't beat the Honda valve train parts and engineering. Quote Link to comment Share on other sites More sharing options...
AydinZ71 Posted December 5, 2022 Share Posted December 5, 2022 On 12/5/2022 at 11:01 AM, Derek said: Thanks. You can't beat the Honda valve train parts and engineering. Expand Hey Derek. Have you heard of Mountune here in Southern California? Their principal Ken Anderson said he was working with Zcargarage up in San Jose on one of your heads. Just curious about who you are collaborating with. Keep up the great work! Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted December 6, 2022 Share Posted December 6, 2022 On 12/5/2022 at 3:36 PM, AydinZ71 said: Hey Derek. Have you heard of Mountune here in Southern California? Their principal Ken Anderson said he was working with Zcargarage up in San Jose on one of your heads. Just curious about who you are collaborating with. Keep up the great work! Expand Zcar posts about Datsunworks heads fairly often, they have one car running it. The videos are magical sounding. Quote Link to comment Share on other sites More sharing options...
AydinZ71 Posted December 13, 2022 Share Posted December 13, 2022 On 12/6/2022 at 8:32 PM, DuffyMahoney said: Zcar posts about Datsunworks heads fairly often, they have one car running it. The videos are magical sounding. Expand Indeed I have seen the vids of Rob ripping on it in the streets near his shop. Curious how Mountune may be involved just because it’s a little closer to home (they are in socal like me). Quote Link to comment Share on other sites More sharing options...
A to Z Posted December 15, 2022 Share Posted December 15, 2022 (edited) Sure would be nice with crank fired ignition, coil on plug and 50 mm ITB's and a nice ceramic coated header. Have Dave Rebello build me a 3.2 variant with an offset ground V07, use an early sleeved block. Only thing nicer would be an aluminum block, and those don't exist. Edited December 15, 2022 by A to Z Quote Link to comment Share on other sites More sharing options...
Derek Posted September 19, 2024 Author Share Posted September 19, 2024 Today this post is officially 10 years old. I was trying to think of something witty to say but I'm drawing a blank. Being 65 will do that to you sometimes. Anyway here's wonderwall. 1 Quote Link to comment Share on other sites More sharing options...
calZ Posted September 19, 2024 Share Posted September 19, 2024 10 years seems impossible. How many have you sold now? On 9/19/2024 at 5:02 PM, Derek said: Today this post is officially 10 years old. I was trying to think of something witty to say but I'm drawing a blank. Being 65 will do that to you sometimes. Anyway here's wonderwall. Expand Quote Link to comment Share on other sites More sharing options...
Derek Posted September 19, 2024 Author Share Posted September 19, 2024 On 9/19/2024 at 7:03 PM, calZ said: 10 years seems impossible. How many have you sold now? Expand I've sold 22 heads. 2 Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted September 23, 2024 Share Posted September 23, 2024 That is pretty darn amazing! 1 Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted November 5, 2024 Share Posted November 5, 2024 On 9/19/2024 at 5:02 PM, Derek said: Today this post is officially 10 years old. I was trying to think of something witty to say but I'm drawing a blank. Being 65 will do that to you sometimes. Anyway here's wonderwall. Expand Your 65!!!!!!!!!! Wait... That means 20 years ago when we hung out a few times you where my age... And I thought you where OLD then!!! Quote Link to comment Share on other sites More sharing options...
Derek Posted November 6, 2024 Author Share Posted November 6, 2024 On 11/5/2024 at 4:06 PM, jeffer949 said: And I thought you where OLD then!!! Expand Ouch. That means I'm extremely old now I'm wet sanding and buffing my Z and let me tell you I'm feeling all of those 65 years. Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted November 6, 2024 Share Posted November 6, 2024 On 11/6/2024 at 11:01 AM, Derek said: Ouch. That means I'm extremely old now I'm wet sanding and buffing my Z and let me tell you I'm feeling all of those 65 years. Expand What i forgot to say is that must mean IM OLD!! But my back slightly bulging a disc when I sneezed a few weeks ago should have informed me of that! 1 Quote Link to comment Share on other sites More sharing options...
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