X64v Posted December 30, 2007 Share Posted December 30, 2007 Bryan - I see you said you got those 'cheap new turbos' for $400 for both. Are those the eBay turbos that everyone talks about, or did you just get a good deal on name brand ones somewhere? If they're the eBay specials, please keep us updated on their performance/quality. It's always interesting to see how good/bad they are. Link to comment Share on other sites More sharing options...
1 fast z Posted December 31, 2007 Author Share Posted December 31, 2007 These are cheap ebay turbos. Here is the auction I won. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=020&sspagename=STRK%3AMEWN%3AIT&viewitem=&item=300179128771&rd=1 I have known other guys to run cheapo turbos, they say the MAIN thing is the compresser housings cracking, as SOME of them are "glued" together. You can tell which ones are glued, and which ones are fuesed by looking at them, and these that I got are NOT glued, so should be ok. We will find out anyways. Even if they dont last forever, atleast I can know if I like the ratios and size of them, then if they break (doughtful) then I will buy genuine garrets. Link to comment Share on other sites More sharing options...
frank280zx Posted December 31, 2007 Share Posted December 31, 2007 Classic!! haha !! i like that blasting peoples doors off on el cheapo OBX style turboes!! Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 Ok, so tonight I started porting on the head. I did NOT port it before, and it was in 100% stock form, as far as valves, ports, etc. Go. Here are the Flow Numbers. It took ALOT to get these ports like this. These ports are actually maxed out. There are no more restrictions in the ports what so ever, atleast not with these sized valves. With my new cams, Turbos and the increased Head Flow, I dont see how 700+ hp is out of line. To give an idea, a stock P90 flows 172, my highest modified P90 flows about 225 cfm. Plus the dohc head is a cross flow. Heres the numbers. Intake Flow lift Stock Modified 0.2 156.2 165.7 0.25 198.8 227.2 0.3 224.8 260.3 0.35 248.5 276.9 0.4 248.5 288.7 0.45 248.5 300.5 0.5 248.5 305.3 0.55 248.5 310.0 Exhaust Flow Lift STOCK MODIFIED 0.2 146.7 151.5 0.25 170.4 182.2 0.3 182.2 191.7 0.35 196.4 198.8 0.4 201.1 208.2 0.45 201.1 217.7 0.5 201.1 222.4 0.55 201.1 224.8 Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 Damn, its all bunched together. Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 Here is some pictures: Link to comment Share on other sites More sharing options...
m4xwellmurd3r Posted January 3, 2008 Share Posted January 3, 2008 my god that thing looks sick. and it looks like you got a nice big bump on the intake side. Link to comment Share on other sites More sharing options...
Guest K4RR Posted January 3, 2008 Share Posted January 3, 2008 I used the same brand ebay turbo "turbocharger" on my 330hp sr20 without any problems at all. So you definetly dont have anything to worry about. Link to comment Share on other sites More sharing options...
Careless Posted January 3, 2008 Share Posted January 3, 2008 gaaaaaaaahd daaaaaaaaayng! Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 I just looked on this page here http://users.erols.com/srweiss/tablehdc.htm And other head flows are as follow. STOCK 2jz= 225 and 142 at .5" 2jz M2 Systems race ported= 285 175 at .5" PORTED RB26= 289 222 at .5" 7mgte stock= 180 133 at .5" PORTED 7mgte= 211 145 at .5" So Seems to hold pretty well compared to these heads. Link to comment Share on other sites More sharing options...
Careless Posted January 3, 2008 Share Posted January 3, 2008 I just looked on this page here http://users.erols.com/srweiss/tablehdc.htm So Seems to hold pretty well compared to these heads. are you comparing it to just L6 heads though? Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 I am comparing it against L6 heads that make good power, IE 2j, 7m, Rb, and that are also close to the same displacement. Link to comment Share on other sites More sharing options...
1 fast z Posted January 3, 2008 Author Share Posted January 3, 2008 Here is a graph to give persepctive on L series heads. Link to comment Share on other sites More sharing options...
thehelix112 Posted January 3, 2008 Share Posted January 3, 2008 Wow. Thats a pretty impressive improvement. Great job. Dave Link to comment Share on other sites More sharing options...
340ZXTTAZ Posted January 4, 2008 Share Posted January 4, 2008 Bryan here is a question those flow #'s were taken with the valves in place @ .5 lift right? Is that the standard practice when measuring the "flow" capabilities of a particular head. Great work so far!!!! I live in Phoenix, about 20 mins away from your shop. I was hoping to see the beast in person would that be cool with you after you get it running again. Link to comment Share on other sites More sharing options...
OlderThanMe Posted January 4, 2008 Share Posted January 4, 2008 So what were the valve specs on all of those heads? You probably don't want to give the specs on your DOHC Z head but what about all of those 2 valve L6 heads? I imagine that is with stock size valves w/ a 3 angle valve job? It's cool to have some numbers just to compare heads... Link to comment Share on other sites More sharing options...
TimZ Posted January 4, 2008 Share Posted January 4, 2008 Bryan here is a question those flow #'s were taken with the valves in place @ .5 lift right? Is that the standard practice when measuring the "flow" capabilities of a particular head. If you read the graph, flow was measured at varying valve lifts from 0.20" to 0.55" in 0.05" increments. And yes that's how it's generally done. Nice improvement over stock, btw. Interesting that as much as that head flows stock, it was pretty much done at ~0.35" valve lift. Link to comment Share on other sites More sharing options...
1 fast z Posted January 4, 2008 Author Share Posted January 4, 2008 Yes this is with the valves in place. Generally, I start at .2" and work up to .55" That is where most cams are, so its best testing in that area. Yes all of the heads on that graph are with STOCK valves. Link to comment Share on other sites More sharing options...
Careless Posted January 4, 2008 Share Posted January 4, 2008 it was pretty much done at ~0.35" valve lift. and still outflows the L2x heads. i guess that pretty much explains the story with the high numbers at low boost. great parts selection and killer setup, Bryan Link to comment Share on other sites More sharing options...
m4xwellmurd3r Posted January 4, 2008 Share Posted January 4, 2008 according to those numbers, you're outflowing even a ported RB26 head (and matching it's exhaust flow) that's very impressive Link to comment Share on other sites More sharing options...
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