Prodeje79 Posted March 26, 2004 Report Share Posted March 26, 2004 So I got my stillen sc V2 kit now. It was from a 5th gen maxima and I have a 4th gen. This means I am going to have to do a custom intake and charger pipe. This would be a good time to intercool (I guess it is really aftercooling) or add a aquamist system. I will be using the current smallest pully of 2.87 which produces 13psi at the stock rpm limit of 6850. I have a JWT ECU with a 7200RPM. I am worried about over spinning and over boosting. I may have to get a larger pully. I have a 3.33, but I think that is too big :> I did a compression test on my 100k motor and it is 210 psi all around. The max is suppose to be 185, so I may have some carbon build up? Anyone have advice / recommendations on any part of my project? Of course alternatives would be to front mount IC or a AWIC where my battery is now. Here are some aquamist links: http://www.nissanperformancemag.com/march03/project200sx/ http://www.aquamist.co.uk/ Quote Link to comment Share on other sites More sharing options...
Renner Posted March 26, 2004 Report Share Posted March 26, 2004 I would recommend intercooling if you can instead of relying on water injection. The aquamist systems are pretty good with the exception of their pumps, apparently the pump they use is crap. If you log on to www.twinturbo.net and do a search for aquamist you should be able to find some good info. Just be sure and actually search instead of posting a question on it over there, because it has been covered a bunch. Quote Link to comment Share on other sites More sharing options...
Guest stevil Posted March 27, 2004 Report Share Posted March 27, 2004 There are a few other different companies selling water injection kits, so you might look into those also. Or piece together a kit using a better pump, etc. Quote Link to comment Share on other sites More sharing options...
JaSSon Posted March 27, 2004 Report Share Posted March 27, 2004 Is 13PSI on a stock 100K block a good idea? Quote Link to comment Share on other sites More sharing options...
SHIEF Posted March 28, 2004 Report Share Posted March 28, 2004 I don't see a problem with 13 psi on stock block at all. As long as you have good stuff on it (fuel, wideband, boost control) then it shouldn't be a problem. Quote Link to comment Share on other sites More sharing options...
Nate1647545505 Posted March 29, 2004 Report Share Posted March 29, 2004 WI tuning + 13psi, on a stock bottom end is really not a good idea. You dance with danger since most WI tunes run lean(er) meaning more of a chance the motor could go boom. I/C would be safest. Quote Link to comment Share on other sites More sharing options...
Guest stevil Posted March 29, 2004 Report Share Posted March 29, 2004 Originally posted by nate dog: You dance with danger since most WI tunes run lean(er) meaning more of a chance the motor could go boom.50/50 water alcohol mix. Quote Link to comment Share on other sites More sharing options...
rl Posted March 29, 2004 Report Share Posted March 29, 2004 Originally posted by nate dog: You dance with danger since most WI tunes run lean(er) meaning more of a chance the motor could go boom. Why do they show leaner? Water displaces air, doesnt combust, and the same amount of fuel is being injected....Please explain, I would love to hear why you think that. If you can intercool than intercool, it works better. We have I dont know how many hours of logging AFR and ACT's vs. WI, 50/50, straight Alchy etc with all kinds of different volumes...For us, water always has cooled the best. Quote Link to comment Share on other sites More sharing options...
Prodeje79 Posted March 29, 2004 Author Report Share Posted March 29, 2004 Well I decided to not go with IC or WI for now. THanks for the info! There a few maxes running with 2.87 pulley fine, but not with the 400 RPM more limit. I would rather be safe than sorry, so I will run the 3.33 for now. I have 370 injectors and a walbro for fuel though. I am gonna be running Apexi EL EGT, Apexi EL PSI boost, defi fuel pressure, and a defi oil pressure. Maybe wideband lm-1 later. I am thinking to sell my 60mm apexis to get all defis though. rx7 store sells defi right? :> Quote Link to comment Share on other sites More sharing options...
Prodeje79 Posted April 12, 2004 Author Report Share Posted April 12, 2004 here is some good reading on WI: http://waterinjection.info/documents/turbowhitepaper/waterinjection.htm Quote Link to comment Share on other sites More sharing options...
Prodeje79 Posted April 15, 2004 Author Report Share Posted April 15, 2004 awesome link on building your own WI kit for around $150! http://members.cox.net/stevemonroe/AlcoholInjMod.html Thanks turbo buicks! :> Quote Link to comment Share on other sites More sharing options...
Guest mudbutt Posted April 15, 2004 Report Share Posted April 15, 2004 Originally posted by Prodeje79: awesome link on building your own WI kit for around $150! http://members.cox.net/stevemonroe/AlcoholInjMod.html Thanks turbo buicks! :>Im doing something similar but taking it one step beyond and adding progressive flow via map signal, can be used with maf signal too Quote Link to comment Share on other sites More sharing options...
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