Stewart Posted October 20, 2014 Author Report Share Posted October 20, 2014 Oh! Cool Beans, Bean!!!!! How about you or Dr. Keeebs, weigh an inlet and exhaust valve and a rocker arm to start the N9T weapon development ? I think the rocker is a 1:1.5 ratio ? Base circle of the Dani and maximum dimension of the lobe, base to tip will get me rolling. Quote Link to comment Share on other sites More sharing options...
Bean Posted October 21, 2014 Report Share Posted October 21, 2014 I can do that for sure Stewart - just need to figure out where to find a good scale for light items... Rabin Quote Link to comment Share on other sites More sharing options...
Stewart Posted October 22, 2014 Author Report Share Posted October 22, 2014 Great , Mate. I have managed to obtain a couple of 505's a non turbo diesel and an SRDT which both run the BA10/5 box. One has 70000kms on the rebuilt box. I'm not sure about diff ratios but I'm pretty sure they are quite different to what was prevalent here. Quote Link to comment Share on other sites More sharing options...
keebs Posted October 23, 2014 Report Share Posted October 23, 2014 Watch out 505s tend to multiply without warning. How's the tuning progressing. Quote Link to comment Share on other sites More sharing options...
Stewart Posted October 23, 2014 Author Report Share Posted October 23, 2014 The tuning is almost dead on. I used a bit of abstract thinking ( you can now all chant, "Again?") I re read the dynosim charts and zeroed in on where maximum torque should be at different levels of boost and rpm. Then reworked the advance graph in high load areas to have a constant ign number then slightly increasing towards max rpm as the BMEP/Torque starts to drop off. That has made a difference to the smoothness once boost is up. Mixtures are now almost all mapped beautifully, so a quick tickle using the knock muffs should do. I got screwed with the 505's even though they didn't cost much. They are in incredibly bad shape, so I'm going to just cut my way into them and retrieve the boxes and driveline stuff. I can't believe these two cars were actually stored close to his house. I'm afraid of catching some terrible disease just by looking inside a doorway! Quote Link to comment Share on other sites More sharing options...
keebs Posted October 24, 2014 Report Share Posted October 24, 2014 Sounds like you're almost there. Too bad about the 505s it seems like a third of the peugeots out there are for parts, the other third don't run right, and the rest aren't for sale. I've got 3 505s, one in each stage. Quote Link to comment Share on other sites More sharing options...
Stewart Posted October 24, 2014 Author Report Share Posted October 24, 2014 I too, have a very nice 505. Not pristine but very good indeed. The ntwo wrecks need a bit of time to let the puss and spiders die off , then a nice 5" cutting disc or two should help in extracting the two BA10/5's. I'm thinking cut the things apart and arrange a scrap steel bin for the body work. I'm nervous to light the oxy torch near them! I drove the 404 hard today and it feels very close. Next week or so, a mechanic friend and I, shall proceed forthwith, to a suitable to sea level road and fine tune the ignition, with the electronic knock ear phones on me old head!. Once he and I are happy we can get a Dyno read . It feels pretty good, so far. Quote Link to comment Share on other sites More sharing options...
andrethx Posted October 24, 2014 Report Share Posted October 24, 2014 Next week or so, a mechanic friend and I, shall proceed forthwith, to a suitable to sea level road and fine tune the ignition, with the electronic knock ear phones on me old head!. Once he and I are happy we can get a Dyno read . It feels pretty good, so far. when this happens, pictures, please! Quote Link to comment Share on other sites More sharing options...
Stewart Posted October 24, 2014 Author Report Share Posted October 24, 2014 Sure. Two elderly witch doctors wearing knock muffs, in mechanic disguise, should cheer someone up! Quote Link to comment Share on other sites More sharing options...
Stewart Posted January 3, 2015 Author Report Share Posted January 3, 2015 Well, we two witch doctors have not done the tune yet as the dreaded exhaust leak malady has befallen my new manifold. However the solution is nigh. Instead of a gasket we go metal to metal at head face to manifold. I found this today, DEI gasket solution.. I've been searching for this sort of product for quite a while. Quote Link to comment Share on other sites More sharing options...
Bean Posted January 3, 2015 Report Share Posted January 3, 2015 Are you using metal gaskets now or the stock non-turbo gaskets? DEI solution looks great. But the .005 gap limit means it has to be a very true surface... I think I'd like to use that with a sheet steel or copper gasket to give the sealing surfaces more leniency. Rabin Quote Link to comment Share on other sites More sharing options...
Stewart Posted January 3, 2015 Author Report Share Posted January 3, 2015 I have a few bits of shim stainless and steel around so that will be what I'll be making while waiting for the magic goo to arrive. Quote Link to comment Share on other sites More sharing options...
keebs Posted January 4, 2015 Report Share Posted January 4, 2015 Long time no see Stewart, looks like were all in the same boat concerning the weather. Motorcycles use copper donuts for the exhaust, so if you have a milling machine to groove the manifold that would be the way to go. Quote Link to comment Share on other sites More sharing options...
Stewart Posted January 6, 2015 Author Report Share Posted January 6, 2015 I don't have a mill at my service at the moment mate. I'm thinking of using some old sheet stainless about 0.75mm (0.030"). I have almost finished the job and shall be knocking the port holes through it tomorrow. It looks pretty good so far. The mating faces on this engine seem to be moving a lot on the exhaust manifold to head. The bit of stainless feels, to my old mechanic's hand, flexible enough to work. ( At last a leak free solid exhaust!!). Does the N9T engine use a stainless shim standard? Quote Link to comment Share on other sites More sharing options...
Stewart Posted January 6, 2015 Author Report Share Posted January 6, 2015 Rabin I was just about to ask you why one might use a copper manifold gasket. Then I check the melting point of Cu. and hey! 1085 C approx. What a great gasket material for a well tuned turbo . So much to learn . Thanks man. Quote Link to comment Share on other sites More sharing options...
Bean Posted January 6, 2015 Report Share Posted January 6, 2015 Stock N9Txx use a two layer stainless steel gasket with something in between. I've reused them with no issue, but if I'm ever without a usable gasket I'll get some water jet cut out of copper or see if suitable copper rings can be used as Keebs suggested. BTW - I did get your email and still thinking on it im the midst of house renos. Rabin Quote Link to comment Share on other sites More sharing options...
Stewart Posted January 7, 2015 Author Report Share Posted January 7, 2015 All good. I've made the shim and just need the time to fit the thing. It was easier than I thought, I must be in a creative purple patch. Quote Link to comment Share on other sites More sharing options...
ganun Posted March 29, 2016 Report Share Posted March 29, 2016 Did you ever get the copper gasket made? if so how did they work? N9TE I presume  Quote Link to comment Share on other sites More sharing options...
Stewart Posted March 29, 2016 Author Report Share Posted March 29, 2016 I made one out of stainless steel actually. Pretty easy and it was scrap from a metal recyclers. I used a ceramic brake paste to lube the faces. Works quite well. It was 0.030" . Quote Link to comment Share on other sites More sharing options...
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