240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

260ZT progress

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Old May 1, 2007 | 01:02 PM
  #51  
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Originally Posted by snwbrderphat540
oh yeah, and if anyone has a spare turbo oil pan that ISNT leaking id like to take that off your hands, ive been repairing mine as new leaks showed up but now one or two more appeared and i think its just gonna keep happenening, or my oil return is leaking.... sigh.... have to get under there and look. but im sick of this oil pan already.
The pan itself leaks? Are there cracks? It's steel... so you could just weld it. I did that for my buddy's C4 Corvette.
Old May 1, 2007 | 03:55 PM
  #52  
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yes, they are near invisible cracks, wouldnt notice them till thre was fluid coming from them,

HOWEVER! it was just teh AFM that came unplugged, i hooked it all up before i went to work started her, started quick, ran and rev'ed fine, and actually held an idle.... it was way to high of an idle around 2K sounded like to me any who.... but you know what, its a good start, just gonna put my other starter in get the battery charged, get some interior back in there and she is finally road worthy, im tripping ***** over this..... i cant believe i can say "she is raod worthy"..... its FREAKY!
Old May 1, 2007 | 06:42 PM
  #53  
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and this is what my car could look like if i built for drag racing

hurray for my firt time in photoshop CS2
Old May 2, 2007 | 12:24 AM
  #54  
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oh and one more thing, what do you all suggest i set my timing to? my dad thinks 10 degrees but he has a stock 280Z.... i have a 280zx NA motor turned turbo.... so what you think? 20 degrees?
Old May 2, 2007 | 06:56 AM
  #55  
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Originally Posted by snwbrderphat540
oh and one more thing, what do you all suggest i set my timing to? my dad thinks 10 degrees but he has a stock 280Z.... i have a 280zx NA motor turned turbo.... so what you think? 20 degrees?
Well, you have a turbo ecu & distrib, but running a lot higher CR. The stock turbo timing is between 20-24 degrees so you should prolly start a bit lower (like 15 degrees) & see how it pulls at full boost.
Old May 2, 2007 | 08:18 AM
  #56  
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and dont blow it up
Old May 2, 2007 | 11:05 AM
  #57  
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haha... i wont blow it up.... its on stock 7 psi and will stay there until the intercooler is in there. and B..... um yeah if your planning any trips to chi-town soon now would be a good time to see the Z. running and all. lol. by this weekend i plan on having it running just how i want it, AND hopefully get it registered so i can take it out.
Old May 2, 2007 | 12:15 PM
  #58  
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1981-82 FSM says 20 deg
1983 says 24 deg
I have no idea why. I set mine at 25 cuz I'm just crazy like that.

Set your idle speed using the little bolt under the throttle arm on the throttle body. You get at it from under the TB. Let the linkage go slack a little at idle. The linkage also has more give to it so if that is what keeps your throttle plate open it will vary slightly.
Old May 2, 2007 | 01:17 PM
  #59  
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i know about the air bleed.idle screw, but it wasnt doing.... anything, lol. im going to get my idle set today and look at my oil pan, then maybe throw teh interior back together, or at least a seat or two i want to drive damnit!

and the FSM says that but is that for turbo? or NA? i guess ill look it up my self. or at least try.
Old May 2, 2007 | 05:58 PM
  #60  
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oh, do you have the NA intake manifold? The Turbo one has no idle speed bleeder hose. Just the little stop on the actual throttle.

Turbo is 20/24 BTDC
NA is more like 10 or 12 BTDC
Old May 2, 2007 | 07:49 PM
  #61  
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hmmm... well the best i could get my timing was 21 degrees... yeesh. and it does have the idle speed screw i got her idling perfectly. HOWEVER.... i have a problem. the car stumbles... i think its my TPS set up. cuase it is teh NA TPS wtih a turbo harness and ECU.... now, this is what im thinking, its getting the wrong signal to position open it really is, and there for leaning it out. cause i hooked up my A/F guage and yeah with more throttle it reads more lean, its actually much more acurate than i expected. also at about half throttle it revs up good, its wtih FAST throttle movements or WOT that it stumbles and gets to either a stall state or does a sort of stutter box thing and back fires a little and spools the turbo hella quick. IDK.... i really think its the NA TPS mixing poorly with the turbo harness and ECU.... any suggestions?
Old May 2, 2007 | 09:55 PM
  #62  
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Originally Posted by snwbrderphat540
IDK.... i really think its the NA TPS mixing poorly with the turbo harness and ECU.... any suggestions?
Get a turbo TPS?
Old May 2, 2007 | 10:04 PM
  #63  
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ooooo really..... hmmm that didnt cross my mind... lol. well i mean could you see this being a problem? such as the TPS sending a half throttle signal through the wire and there for at full throttle it sense half throttle so dumps half throttle amount of fuel in at WOT position leaning it out... yes? maybe? and as for the 240sx TB upgrade... do you use teh 240sx TPS as well or do you swap... cause justin260 found one for me and was suppose to send it then find some other stuff so we could trade for the carbs... but i guess he forgot or something to send the 240sx TB.... would be usefull right aboot nowish. and where teh hell would i get a turbo TPS anyways.... and to change em is it jsut unbolt pull off push new one in and bolt back and plug in? IDK MAN!!!!
Old May 3, 2007 | 11:02 AM
  #64  
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sounds just like what my car did when I had a vacuum/boost leak. Once it was fixed, the stumble and backfire went away.

Also, the NA and turbo TPS are interchangable. turbo has two connectors, NA has three. You just don't use the Wide Open Throttle signal on the NA one. dont' worry aboot it
Old May 3, 2007 | 01:28 PM
  #65  
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but i want WOT lol..... yeah im thinking vacumme leak also, i found one and sorta fixed it... i gotta check a few more things, i also think my injectors rings are crap, sounds like they are letting air by them the rings that sit in the manifold and the injectors go into.... my buddies DSM ones leaked and his car ran like *** hole to.... so im thinking that might be my problem. what would those little guys be called on thepartstore.com so i can order them.
Old May 3, 2007 | 01:43 PM
  #66  
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You can buy the injector o-ring kits for cheap @ any parts store....
Old May 3, 2007 | 04:31 PM
  #67  
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true..... they are all the same... why dont i think of these things. however, i ran teh car again, and it was stumbling and back firing, but i held it till it revv'ed out until redline a two times, now it only hesitates, i think it was just dirty. now it doesnt backfire, it doesnt bog when you just floor the throttle it revs hesitates a second and tehn goes ballistic. i think i will still replace the rings though. so i guess i just got teh oil leaks to fix and i can finally take her out. and yeah higher compression rocks. lol. this is the first turbo car ive seen that builds boost in nuetral just revvin it. screw you turbo lag!
Old May 4, 2007 | 04:43 PM
  #68  
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BAH.... lol. well i drove her, sounds sweet and drives very nice, at normal acceleration. but gunning it, stumbles around again, but my vacume is at like 5psi so i got a bitchin leak somewhere. i could hear it but cant find it. im still thinkin injectors. also, my front main seal is leaking.... GRRRR.... its my final oil leak, and a very VERY light oil leak on the turbo somewhere so small it just burns the oil immediatly. stupid vacumme leaks. im thinking about goin on a vacumme leak hunt and if that doesnt fix it, then ill drop it at a shop. what else was wierd it sounded like there mightve been a leak on the passenger side of the engine, WTF could have a vacumme leak there sept teh valve cover but then it would spread oil, which it isnt, plus its a new gasket.
Old May 5, 2007 | 02:03 PM
  #69  
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have you checked to see if your spark plugs are loose? that could be your hissing and might even be your stumbling problem..
Old May 5, 2007 | 02:26 PM
  #70  
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i will. ^^^ thats a good suggestion. vacumme is back to 20psi now for now reason, my oil pump is leaking need a new gasket, my front main seal MIGHT be leaking and my oil pan is stll leaking for no god damn reason, this oil pan pisses me off SOOOO much. so serioously, any one has one, sell it to me. lol. a turbo oil pan that is.
Old May 8, 2007 | 04:17 PM
  #71  
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dont you love it when progress is followed by a set back. well, dropped the oil pump again (and now for the last time) screwed with shaft and put a new gasket cause it was leakin oil. well, now i can set my timing between 7 degrees and i think about 20 so im happy with that, the oil pump no longer leaks but teh pan does, no big right? (oh and it stumbles LESS but thats about it) but then what do i see, a stream of oil, WTF it seems to be coming out of my intake mani bottom where the EGR pipe goes, im freakin out, oh wait nope, its teh stupid *** cheap POS SS braided oil feed line i got. turbo parts even that simple and ebay DONT MIX. so im gonna have to order a new kit for the T3 and then get back to patchin the oil pan if no go, i need a new one, and the only place i can find em new is stupid arizona Z car and its like 350 buck for ALUMINUM!!!! ugh, im gonna make my oen oil pan
Old May 8, 2007 | 09:34 PM
  #72  
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so what do you guys think is with my shitty WOT rev any just off the top of your head ideas?

and also, my amp guage dont work, my temp guage wont work when i hook it up (will a zx temp sender work with a Z guage though?) and my tach wont work with any of the wires under teh hood.... so i guess i might have to go under tha dash and try all those wires out... stupid guages, stupid important guages.... lol. and the oil pressure guages on these cars work stupid slow. lol. but at least it and my speedo work.... dont know about my fuel guage yet and i dont give a **** about the clock.
Old May 20, 2007 | 01:35 AM
  #73  
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soooooo, word to the wise, when your trying to see if your engine is running good, put alot of gas in it, specially if you drained it prior to starting it..... yeah, turns out my engine runs and pulls like a champ, the only reason it was sputting and stunbling at WOT was cause, uhhh, yeah, it was out of gass lol.... turns out my gas guage works though so that makes me happy, now i just NEED to get teh tach and temp guage working, and then SHOULd get teh amp guage working, everything else is A O K. still need to see if there are any leaks left to tend to, and i need to speed up the idl a bit, now when it leaves F idle it starts to die, good ole air bleed screw will fix that one! and with the turbo motor, 1st gear seems almost useless, it goes by so damn fast, and turbo lag can sucka big one, thing spools in no time flat, now i just neeed to sink money into an exhaust and IC piping with my BOV attatched and i can get the bod work out of the way and i save money for another motor swap, if i come up short of my goal it just gets dumped into performance parts on the Z, that or a down payment on a bike, not sure yet.
Old May 20, 2007 | 07:33 PM
  #74  
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why not just ditch the shitty AFM and go with a z31T MAF and ecu swap?
Old May 20, 2007 | 09:39 PM
  #75  
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cause im LAZY!!!! and actually if im gonna go that far i might as wel just go megasquirt thats all. depends on how this summer goes that decided what i do with the car.



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