1 fast z Posted January 11, 2007 Share Posted January 11, 2007 Here is just a little update on Mcadam's and My project on the DOHC L31DETT. I bought a house recently so that sorta took up alot of my time, haha. Anyways, I fabbed up the intake this weekend. Heres some pics. Volume is more than adiquite from my calculations. Notice the Internal velocity stacks that I did on a manual Bridgeport. The CNC is not communicating with the PC right now, grrrrrrrrr. I WILL be building an ITB setup later but for now, We NEED to get it running and driving by mid APRIL for MSA. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted January 11, 2007 Share Posted January 11, 2007 Very interesting..... looks promising. Quote Link to comment Share on other sites More sharing options...
moerex Posted January 11, 2007 Share Posted January 11, 2007 nice work looks great. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 11, 2007 Share Posted January 11, 2007 Hey now that I'm in Tucson you guys have to let me know when you're gonna fire it up!!! I wouldn't mind missing classes to see this bad boy running! Mario Quote Link to comment Share on other sites More sharing options...
1 fast z Posted January 11, 2007 Author Share Posted January 11, 2007 No more Chicago? Your going to UofA full time now? Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 12, 2007 Share Posted January 12, 2007 Yea, school started driving me insane. Plus I decided I didn't need to get that much in debt just for undergrad... (*cough $25k cough*) And I have my car here and I'm not freezing to death haha Plus here I can major in Electrical Engineering, minor in Computer Eng and Math, all for a little less course load then NU and pennies compared to in price. Seriously, if you need help or are going to start it, lemme know, I'll drive up in a minute haha Good luck with it, Mario Quote Link to comment Share on other sites More sharing options...
CantZme Posted January 14, 2007 Share Posted January 14, 2007 can't wait to see what kind of #'s this beast puts out...have u flow tested the head btw? Quote Link to comment Share on other sites More sharing options...
Guest fastassz Posted January 15, 2007 Share Posted January 15, 2007 question? What kind of head is it & where does it come from.I would really like to know how much power you are aiming for. Quote Link to comment Share on other sites More sharing options...
Zsane Posted January 15, 2007 Share Posted January 15, 2007 It's a blend of 2 4cyl heads modified to work on his L6. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted January 15, 2007 Share Posted January 15, 2007 3 4-cylinder heads I thought. Dave Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 15, 2007 Share Posted January 15, 2007 2, cut one in half then cut the 1st and 4th cylinder on the second and put them together. Mario Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted January 16, 2007 Share Posted January 16, 2007 Ah. My mistake. Dave Quote Link to comment Share on other sites More sharing options...
naviathan Posted January 16, 2007 Share Posted January 16, 2007 I'm just...wow...That's great... How did you get the oil and coolant passages lined up and ensure nothing got blocked? What about the head bolt pattern? Obvious things would have been shifted around cutting the thing into pieces and welding back together. Are there gaps inside the passages that would be a concern? This is all incredible to me that you're able to pull it off. Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted January 16, 2007 Share Posted January 16, 2007 That's nothing! You ought to see what they do on Mondays! Quote Link to comment Share on other sites More sharing options...
naviathan Posted January 16, 2007 Share Posted January 16, 2007 That's nothing! You ought to see what they do on Mondays! Hahahaha.....I wish I could. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted January 16, 2007 Author Share Posted January 16, 2007 Actually you take 2 KA 24de heads, and slice ONE of the heads DIRECTLY down the middle, and when I say directly I mean directly, you only have about a 15 thousands of an inch curf to deal with . Then you take another head and take off the end cylinders and keep the center two cylinders, then its puzzle time. This is all done on a wire edm machine, to ensure a perfect cut, then the 1/3rds are surface ground to ensure PERFECT flatness and width. Also, they are NOT welded together but rather bolted and doweled together with a Viton oring inside each third to seal. Welding will create too much warpage and make cam bores out of round and alignment, and you cant just line bore the head as the rotater cup bores wont be perpendicular to the camshaft thus they wont turn, and it will wipe out cams and rotaters. Quote Link to comment Share on other sites More sharing options...
texasz Posted January 17, 2007 Share Posted January 17, 2007 1 fast z, please provide more specs on this engine. Block? Crank? etc, etc. This is very interesting!! Quote Link to comment Share on other sites More sharing options...
naviathan Posted January 17, 2007 Share Posted January 17, 2007 Ummmm, wow....I understand everything you said, but damn...That's a lot of work with no margin for error. Quote Link to comment Share on other sites More sharing options...
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