clarkspeed Posted June 24, 2012 Share Posted June 24, 2012 Impressive stuff! Thanks for sharing. Quote Link to comment Share on other sites More sharing options...
motomanmike Posted June 29, 2012 Share Posted June 29, 2012 Simply awesome! I would love to hear them run. Quote Link to comment Share on other sites More sharing options...
josh817 Posted June 29, 2012 Share Posted June 29, 2012 How far did you space your injectors from the air horns? I'm doing the same thing but when I eyeball the spacing to look similar to yours I can help but think that a bit of the atomized fuel may not make its way into the air horn. Then again... there is quite a suction at fuel throttle so maybe not. Quote Link to comment Share on other sites More sharing options...
PMC raceengines Posted June 29, 2012 Author Share Posted June 29, 2012 (edited) Hi josh817 well its not much of problem as there is a low set of injectors as well , they do up to 4000rpm and then the top set come in. And there is very little stand off, it gets better as it gets higher in rpm , also we have them so we can move them in or out . Edited June 29, 2012 by PMC raceengines Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted June 29, 2012 Share Posted June 29, 2012 Are you using the Bigstuff3 EMS? It looks like we're going back to 2x injector per cylinder with the ford GT and we're trying to smooth out the transition point from one injector to two. Quote Link to comment Share on other sites More sharing options...
PMC raceengines Posted June 29, 2012 Author Share Posted June 29, 2012 (edited) We only use motec at les collins racing for our ECUs , there just so good and there is no gap in the tune as the injectos change its just that good of a system , pmc Edited June 29, 2012 by PMC raceengines Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted July 13, 2012 Share Posted July 13, 2012 I'm going to guess you're not operating above 2000hp. Quote Link to comment Share on other sites More sharing options...
PMC raceengines Posted July 14, 2012 Author Share Posted July 14, 2012 OK 2000hp ? Quote Link to comment Share on other sites More sharing options...
Tony D Posted July 14, 2012 Share Posted July 14, 2012 Plenty of Motec out there on big HP setups. Cheap Shot. Plenty of DCRE's out there at 1100 N/A HP running a carburettor, what's the point? Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted July 14, 2012 Share Posted July 14, 2012 My point is that he hasn't had to deal with the transition from one to two injectors on 2500hp worth of fuel system. 600hp, maybe, but not 2500hp. Good thing we're not going with e85 or the transition would even harder to optimize. Quote Link to comment Share on other sites More sharing options...
PMC raceengines Posted July 15, 2012 Author Share Posted July 15, 2012 (edited) Well you dont know me very well HowlerMonkey i have built a 2000hp 3.4L 6 with 18 injectors that run 6.70 210mph with a motec , now days we run 2 2000cc injectors in this setup Edited July 15, 2012 by PMC raceengines Quote Link to comment Share on other sites More sharing options...
Z Greek Posted July 15, 2012 Share Posted July 15, 2012 My point is that he hasn't had to deal with the transition from one to two injectors on 2500hp worth of fuel system. 600hp, maybe, but not 2500hp. Good thing we're not going with e85 or the transition would even harder to optimize. Peter (PMC) has been SO helpful and gracious with his advice to me on my L28 Chump racer project. I have been working on cars all my adult life, and love engines but am far from a race engine builder. Peter has never talked down to me, and has offered nothing but brilliant advice. My COMPLETELY stock L28, with attention to detail, and advice from Peter just ran with a pack of E30 Pro3 Bimmers at our local road course on worn out Yoyo 888 tires. Once I got the tune dialed in, the engine is nothing short of BRILLIANT! I owe most of it to Peter at PMC's advice. I will never second guess anything he says on this, or any other forum. Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted July 15, 2012 Share Posted July 15, 2012 Well you dont know me very well HowlerMonkey i have built a 2000hp 3.4L 6 with 18 injectors that run 6.70 210mph with a motec , now days we run 2 2000cc injectors in this setup What percentage of the drive time on that car is on a single injector where you have to deal with transition to multiple injectors? Race cars are one thing but getting a smooth transition on a street car that has enough fueling for 2500hp brings up issues that pure drag cars never have to contend with. We use John Meany who designed F.A.S.T., accell dfi, and big stuff. Quote Link to comment Share on other sites More sharing options...
Tony D Posted July 16, 2012 Share Posted July 16, 2012 (Yawn) Lets angulate the penis and see how high on the fencepost we can go gentlemen... Blah Blah Blah... Take advice someone once gave me: "It's not all that difficult, you can figure it out if you're smart enough!" Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted July 16, 2012 Share Posted July 16, 2012 I think both PMC and HowlerMonkey need to post pics and details of their respective 2000hp+ builds, as whilst I don't doubt they can both back up those claims, without proof (which I'm curious to see regardless), this thread could as well be two 12yo's arguing. Dave Quote Link to comment Share on other sites More sharing options...
PMC raceengines Posted July 17, 2012 Author Share Posted July 17, 2012 Like i said the motec is very good it has a blending program for injectors all you do is tell it what AFR you want and tell it the injector size and your away, you dont have to be smart lol it works it out, but if your trying to drive 2500hp on the street it wont be a nice smoth drive as soon as the throtal is down the wheels spin and you can not feel what is going on , if you have the man that built the system helping you , you will work it out Quote Link to comment Share on other sites More sharing options...
Mack Posted July 17, 2012 Share Posted July 17, 2012 I have yet to see ANY import inline 6 under say, 4.0l or so go above 2000hp, custom built or not. I would love to see a dyno chart or something on these miracle engines. Hell, show me a dyno chart for ANY automotive inline 6 over 2000hp. Quote Link to comment Share on other sites More sharing options...
Bob_H Posted July 18, 2012 Share Posted July 18, 2012 Guys have been getting that kind of power for a bit. Here is a thread with some links to at least one: http://www.fullboost.com.au/forum/showthread.php?t=5109 Not very many- but they do exist. I agree though- more updates when the RB26 head gets back on track! Bobby Quote Link to comment Share on other sites More sharing options...
HowlerMonkey Posted November 23, 2012 Share Posted November 23, 2012 (edited) Like i said the motec is very good it has a blending program for injectors all you do is tell it what AFR you want and tell it the injector size and your away, you dont have to be smart lol it works it out, but if your trying to drive 2500hp on the street it wont be a nice smoth drive as soon as the throtal is down the wheels spin and you can not feel what is going on , if you have the man that built the system helping you , you will work it out It's a very smooth drive on the street but I am working with 5.9 liters which might change things vs 3.4L. It's possible that large displacement engines might not act the same as a smaller displacement concerning transition from one to two injector operation because it took a ton of tuning to smooth it out on our car. We control wheelspin using an AMS1000 controller and a custom "boost by gear" system because it seems to work better than ecu based traction control. I guess it's also possible that big stuff is behind Motec in technology. Edited November 23, 2012 by HowlerMonkey Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted February 14, 2013 Share Posted February 14, 2013 Bumping this thread since I saw this post on speedhunters http://www.speedhunters.com/2013/02/godzilla-attacks-the-gibson-group-a-gt-r/ Quote Link to comment Share on other sites More sharing options...
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