| Go back to previous topic | | Forum name | 4G63 Tech | | Topic subject | 15psi 3rd gear boom-boom | | Topic URL | http://forums.2gnt.com/dcboard.php?az=show_topic&forum=67&topic_id=1516 |
1516, 15psi 3rd gear boom-boom
Posted by kelvinb1, Dec-31-69 06:00 PM
**TESTING ON OPEN ROAD BY MYSELF***
35mph I did a 2nd gear pull till about 6500rpm and shifted, Everything is good. 47mph I did a 3rd gear pull, about 5500rpm my car went BOOM but doesnt die. Still running. Try 3rd again.... BOOM, but still running. Tried it one more time and POP again. I say fuck it and shift into 4th and go again and BOOM intercooler pipe blows off :(. The clamp flew off somewhere so I went home and called it a night. What I don't understand is why it was popping.
Fuel cut?
I rewired the pump with a relay awhile ago and it never did this before, even when it creeped to 20psi.
Pulling timing?
Supra SMIC so I don't think it is that.
Boost leak?
I just installed a new silicone hose but it is possible it was leaking since that is where the intercooler pipe popped off.
me=confused.
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1517, RE: 15psi 3rd gear boom-boom
Posted by Jeff_99gs, Dec-31-69 06:00 PM
I would suggest a datalogger.
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1518, RE: 15psi 3rd gear boom-boom
Posted by Pitchblack98, Dec-31-69 06:00 PM
That sounds like intake backfire. The last one built up a little more pressure and blew off the intercooler pipe when it backfired again. Defintaly invest in a datalogger and find out whats going on.
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