stock 3sfe fuel injectors - Toyota Nation Forum : Toyota Car and Truck Forums

finalturismo · 03-31-2007, 10:22 AM

i got a td04 turbo for my 3sfe and i want to boost a safe 6.8 psi with a 300zx waste gate.. i got all the fittings all i need is the welding done now... but i dont know what my injectors max out at.... somone told me they max out at 8psi and somone said 156 horse power on another forums... any exsact specs for my fuel injectors?

Tommy · 03-31-2007, 02:24 PM

not sure of the exact specs, but most people go ahead and upgrade to mk3 supra injectors to be on the safe side. The stock injectors are like 210cc i believe, and mk3 supra would be around 300cc

PM the mod 88LE, or white90dx - both had a turbo 3sfe a few years ago and can tell you exactly what you should use for a semi-reliable setup.

88's was one of the firsts on here before the engine blew up, but white90dx lasted a long time before he swapped out the 3SFE for a GTE.

finalturismo · 03-31-2007, 03:29 PM

6.8 psi should be a fine amount of boost for that motor...iam not going past 8 for sure..

Tommy · 03-31-2007, 03:38 PM

i dunno man, several 3SFE and 5SFE turbos have exisited, and theyve all been destroyed by detonation, and those people had beefed up fuel systems. definatly run your system by the guys i mentioned, they'll tell you what you need....for sure need to listen to them, both those guys have hands on expereince.

finalturismo · 03-31-2007, 07:03 PM

my friend with the 300zx na to turbo told me that any motor can have forced induction. he told me to retard the timing and put higher octain gas to compensate for the det and told me as long as i dont try to top out the car in boost i should be fine my 3sfe is fairly new around 50,000 miles on it with a 205,000 mile trans and a new clutch with a high performance presure plate. he told me det was caused by the high compression on the 3sfe and 5sfe motors and retarding it should fix that problem... i hope anyway... and thanks for the advice all msg them ^^

Tommy · 03-31-2007, 11:28 PM

yea...there's been plenty of boosted FE cars and rarely do they work out well. even with fuel enrichments, high octane fuel, all that fun stuff that you mentioned, you can still kill the engine quiet easily on these things.

finalturismo · 04-03-2007, 12:18 PM

well that kinda kills the hope... i msged one of the mods but i didnt get a reply back yet, its been a couple days..

Tommy · 04-03-2007, 12:30 PM

If you msg'd 88LE, give him time, he only shows up every few days, has a busy work schedule. Message charlie - white90dx, he knows just as much and had the only reliable boosted 3SFE that I know of.