Guest NissanFan Posted September 12, 2006 Share Posted September 12, 2006 I have a 87 N/A and ive been thinking about turboing my car but i want to keep it reliable, so i was thinking about building my N/A, do you guys think its worth it? if so, what should i get? or would it be safe to just turbo my N/A cuz i keep hearing about detonation, but then i hear its okay as long as you get a intercooler, any help would be great Quote Link to comment Share on other sites More sharing options...
mtcookson Posted September 13, 2006 Share Posted September 13, 2006 The VG's are very strong stock. You can easily get to the 300-400 hp range without any bottom end work. The most important part is to keep it from detonating. To keep it from detonating, fuel is the most important part. As long as your tuning is good to keep the fuel supply up you shouldn't have an issue. Of course you have other things like timing and such but that part isn't all that hard compared to keeping the fuel right. Once you start fine tuning it to squeeze out the most power you can, then you'll start border lining safety, but if you're just looking for a quick street car that can take on quite a few cars at a track you should be fine with the stock internals. Quote Link to comment Share on other sites More sharing options...
Guest NissanFan Posted September 13, 2006 Share Posted September 13, 2006 so do you think i should just turbo my N/A? Id for sure get an intercooler to make it alot safer. Honestly i just wanna be able to get 250 RWHP. nothing outta control Quote Link to comment Share on other sites More sharing options...
mtcookson Posted September 17, 2006 Share Posted September 17, 2006 Yeah, for that power output the stock N/A engine is more than strong enough. It won't take much boost at all to reach that power. Quote Link to comment Share on other sites More sharing options...
Guest NissanFan Posted September 18, 2006 Share Posted September 18, 2006 how many pounds of boost can i run to get that? Quote Link to comment Share on other sites More sharing options...
mtcookson Posted September 18, 2006 Share Posted September 18, 2006 I wouldn't think you'd need anymore than 10 psi... 15 at the very most. I've seen a dyno of a stock Z31 with the 7.8:1 engine and the T3 style turbo making 250 whp at 15 psi... so you definitely wouldn't need near as much with the higher compression and a better turbo. Quote Link to comment Share on other sites More sharing options...
Guest Jason84NA-T Posted October 3, 2006 Share Posted October 3, 2006 a long time ago I dynoed a 9:1 turbo engine with a stock T3 at 13PSI and no intercooler. It made 240rwhp/310rwtq With an IC and the same boost after pressure drop I can see 250whp at 13PSI, but that is nearing the safe limit on factory programming. Quote Link to comment Share on other sites More sharing options...
Guest Mark300zxTurbo Posted November 6, 2006 Share Posted November 6, 2006 9:1 turbo engine with a stock T3 ...I thought all the turbos were 7.8:1? or are you talking about a NA with one from a turbo? Quote Link to comment Share on other sites More sharing options...
mtcookson Posted November 6, 2006 Share Posted November 6, 2006 Yeah, he's talking about putting the stock T3 style turbo on an N/A VG. 84 to early 87 VG-T's had the T3 turbo with 7.8:1 compression. Late 87 to 89 VG-T's had a T25 turbo with 8.3:1 compression. Quote Link to comment Share on other sites More sharing options...
NissanSportMag(Z31) Posted November 6, 2006 Share Posted November 6, 2006 All 87 turbo models were 7.8:1 compression. All 87 turbo models had the T3. Yes, the W series engine was introduced April 87, but the compression and turbo didn't change. Quote Link to comment Share on other sites More sharing options...
mtcookson Posted November 8, 2006 Share Posted November 8, 2006 From what I can tell of Nissan's FAST parts system, all 4/87 and up have the same pistons. Also, kind of strange, but it looks like the turbo changed in 10/86 according to the parts system. Quote Link to comment Share on other sites More sharing options...
NissanSportMag(Z31) Posted November 8, 2006 Share Posted November 8, 2006 Turbo pistons for 0487 to 0887 have a different part number than the 0887 up pistons and pre 0487 pistons. The NA pistons are all the same after 0487. But compression didn't change. (part code 12010) http://z31.com/fiche/2/e02.gif http://z31.com/fiche/2/f02.gif The turbo is different only after 0887. Prior to that, there are several part numbers, but they all end up having the same alternate part number. (part code 14411) http://z31.com/fiche/2/f04.gif 0884-0386 = 14411-01P00 -> 14411-01P01 0386-0886 = 14411-01P01 -> 14411-01P60 0886-0887 = 14411-01P60 -> 14411-01P65 0886-0887 = 14411-01P65 0887-____ = 14411-21P22 Part number changes can occur because of a different manufacturer or even as simple as an internal bushing change. Quote Link to comment Share on other sites More sharing options...
mtcookson Posted November 9, 2006 Share Posted November 9, 2006 That makes a little more sense now. I guess whenever someone over at Z31.com mentioned the late 87's had the higher compression they must have meant late 87 production wise. Quote Link to comment Share on other sites More sharing options...
NissanSportMag(Z31) Posted November 9, 2006 Share Posted November 9, 2006 There's a couple people that keep spouting off that wrong information. They're usually corrected or their posts deleted. Quote Link to comment Share on other sites More sharing options...
Guest ZFury Posted November 13, 2006 Share Posted November 13, 2006 eh'... seen a guy dyno his 300zx @ like 500hp with little work. Just boost, intake, fuel & exhaust... Quote Link to comment Share on other sites More sharing options...
NissanSportMag(Z31) Posted November 13, 2006 Share Posted November 13, 2006 and a bigger turbo would also be needed at minimum. Quote Link to comment Share on other sites More sharing options...
Guest mr_duder Posted November 15, 2006 Share Posted November 15, 2006 if the n/a heads are different than the turbo heads, my question is, does it matter if u run a turbo with n/a heads, or did i just sound stupid(lol) Quote Link to comment Share on other sites More sharing options...
specialk Posted November 17, 2006 Share Posted November 17, 2006 The turbo and N/A heads are the same. They use different pistons for CR mod's Quote Link to comment Share on other sites More sharing options...
Alex_V Posted November 21, 2006 Share Posted November 21, 2006 not really, the turbo heads either have better ports factory or can be ported to flow better then NA heads. Im not sure exactly but I know thats not right. Search function-its free. Use it. ~Alex Quote Link to comment Share on other sites More sharing options...
NissanSportMag(Z31) Posted November 21, 2006 Share Posted November 21, 2006 specialk is right. alex v is wrong. The NA and turbo heads are exactly the same for the same years. They did change in April 87 with the introduction of the "W" series motor. But even after that, the NA and turbo heads were still exactly the same. Quote Link to comment Share on other sites More sharing options...
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