 CT26 + Maximum Boost |
 Jan 29, 2006 - 2:04 PM
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Enthusiast  Joined Jan 14, '06 From New York Currently Offline Reputation: 0 (0%)  |
Does anyone know how much boost (MAXIMUM) a non-modified CT26 turbo can handle???
-------------------- I drive a Celica. Anything "less" is just a car! |
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Replies
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Feb 4, 2006 - 8:46 AM
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 Moderator Joined Oct 1, '02 From fall river, ma Currently Offline Reputation: 13 (100%) |
the deal is this: with an upgraded fuel pump (like all of us swappers run)
there is a pressure drop across the rail of 14-17psi at the #4 injector VS the #1 injector. basicly it is because of how small the hole is that provides the fuel across the rail to the injectors. you can read all about it here: http://www.mr2oc.com/showthread.php?t=60913 the highlights: • One should NOT run a larger fuel pump with the stock Gen II MR2 Turbo (3S-GTE) fuel rail. • One should NOT run any fuel rail with 550’s with the stock Gen II 3S-GTE fuel pump above 10 PSI boost. The stock fuel pump cannot keep up above 52 psi of line pressure. Even though the test data shows a 60 psi test was run, when the injectors opened in this test, the pressure dropped to 50 psi!! • The Gen II 3S-GTE factory FPR, supply lines, and return lines can handle a larger fuel pump without problems. • Both the supra pump and the Walbro pump (255 lph) can keep up with 850 cc/min injectors. -------------------- Former Team 5SFTE pro member ;)
 13.6@108MPH, 5SFTE Powered |
Posts in this topic
nemesis CT26 + Maximum Boost Jan 29, 2006 - 2:04 PM
defgeph People say it dies out after 15psi. Jan 29, 2006 - 2:07 PM
jgreening QUOTE(defgeph @ Jan 29, 2006 - 1:07 ... Jan 30, 2006 - 9:02 PM creis eh, I have heard it craps out at around 10psi, but... Jan 30, 2006 - 12:25 AM BBoYRuGGeD QUOTE(creis @ Jan 30, 2006 - 5:25 AM... Jan 30, 2006 - 12:27 AM lagos QUOTE(creis @ Jan 30, 2006 - 12:25 A... Jan 30, 2006 - 1:11 AM gt_driFFter QUOTE(lagos @ Jan 30, 2006 - 1:11 AM... Feb 3, 2006 - 5:32 PM defgeph Yeah, I'm with you on the myth part. I've... Jan 30, 2006 - 9:16 PM tangcla Won't die, just runs out of breath.
Daily dr... Jan 30, 2006 - 10:17 PM Supersprynt I'm afraid of going above 15... Jan 30, 2006 - 11:40 PM rjbibeau this might be kinda funny but i hit 20 once day on... Feb 3, 2006 - 10:46 AM tangcla QUOTE(rjbibeau @ Feb 4, 2006 - 2:46 ... Feb 3, 2006 - 4:16 PM Insanity-74 Anything above 1.2bar and it will lose effeciency ... Feb 3, 2006 - 5:21 PM tangcla QUOTE(Insanity-74 @ Feb 4, 2006 - 9... Feb 3, 2006 - 5:28 PM BBoYRuGGeD sorta off topic but since we're talking about ... Feb 3, 2006 - 9:34 PM defgeph QUOTE(BBoYRuGGeD @ Feb 3, 2006 - 9:3... Feb 4, 2006 - 12:28 AM BBoYRuGGeD thnx for confirming for me jeff ... anyway i think... Feb 4, 2006 - 1:12 AM lagos QUOTEYou are correct running over 10 PSI for a lon... Feb 4, 2006 - 1:52 AM defgeph Its better to be safe than sorry right ? 75 bucks ... Feb 4, 2006 - 2:04 AM BBoYRuGGeD QUOTE(defgeph @ Feb 4, 2006 - 7:04 A... Feb 4, 2006 - 3:57 AM lagos QUOTE(defgeph @ Feb 4, 2006 - 2:04 A... Feb 4, 2006 - 5:11 AM defgeph QUOTEyeah i remember reading some stuff on that, b... Feb 4, 2006 - 9:37 AM BBoYRuGGeD I think i should upgrade my rail now...anyone have... Feb 4, 2006 - 12:30 PM defgeph Why chance it?, the rail is only 75 bucks. Think a... Feb 4, 2006 - 12:48 PM BBoYRuGGeD ok so the RAIL will lean out #4 at 10psi? i thoug... Feb 4, 2006 - 1:11 PM presure2 QUOTE(BBoYRuGGeD @ Feb 4, 2006 - 1:1... Feb 4, 2006 - 2:46 PM BBoYRuGGeD QUOTE(presure2 @ Feb 4, 2006 - 7:46 ... Feb 5, 2006 - 1:08 AM defgeph From what I have seen the stock injectors are fine... Feb 4, 2006 - 1:31 PM tangcla Does the fuel rail need to be upgraded with an ST2... Feb 4, 2006 - 5:07 PM presure2 QUOTE(tangcla @ Feb 4, 2006 - 5:07 P... Feb 4, 2006 - 5:09 PM tangcla ahh k. cos I already did the fuel pump with a Walb... Feb 4, 2006 - 5:13 PM Insanity-74 Up to and including 850cc injectors can use the or... Feb 4, 2006 - 5:35 PM lagos here is something to keep in mind tho. all these ... Feb 4, 2006 - 6:31 PM presure2 QUOTEedit: on a side note...i agree with lagos tha... Feb 5, 2006 - 8:19 AM jgreening A new rail is necessary on TUNED engines. If you ... Feb 5, 2006 - 9:47 AM BBoYRuGGeD QUOTE(jgreening @ Feb 5, 2006 - 2:47... Feb 5, 2006 - 4:13 PM jgreening QUOTE(BBoYRuGGeD @ Feb 5, 2006 - 3:1... Feb 5, 2006 - 4:29 PM BBoYRuGGeD QUOTE(jgreening @ Feb 5, 2006 - 9:29... Feb 5, 2006 - 4:47 PM jgreening QUOTE(BBoYRuGGeD @ Feb 5, 2006 - 3:4... Feb 5, 2006 - 4:55 PM BBoYRuGGeD QUOTE(jgreening @ Feb 5, 2006 - 9:55... Feb 5, 2006 - 5:06 PM lagos QUOTE i dont at all.
by the time you realize the p... Feb 5, 2006 - 4:48 PM brianforster i agree, this thread makes it sound like bad juju,... Feb 23, 2006 - 12:42 PM presure2 just a couple pics of the ATS modifyed rail for re... Feb 23, 2006 - 1:10 PM lagos QUOTE(brianforster @ Feb 23, 2006 - 12... Feb 23, 2006 - 10:33 PM XxAxnCelica95xX aww man i sure miss 6gc.net..man i just came back ... Feb 24, 2006 - 1:10 AM brianforster would my safe maximum boost be lower since i have ... Feb 24, 2006 - 2:22 PM jgreening QUOTE(brianforster @ Feb 24, 2006 - 1... Feb 24, 2006 - 3:33 PM brianforster QUOTE(jgreening @ Feb 24, 2006 - 8:3... Feb 24, 2006 - 3:42 PM |
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