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View Full Version : NEW MOTOR SWAP:PROBLEMS! HELP!


Parker_'915spd
08-10-2007, 09:41 PM
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i just put a rebuilt 305 in my 1991 z28 TPI.....im having abit of a problem....

everything was reconnected correctly as far as the harness and intake go....

PROBEM: i have coolant comming out of my throttle body and out of my headers; obviously there is coolant getting fed into my air intake system some how....

ANY SUGGESTIONS ON WHERE TO START DIAGNOSING????

????: could it be possible that the heads arent torqued on?, because the intake is put on absolutely perfect....i bought the motor from another person so maybe the heads werent torqued on (i know its dumb i should have checked, but obviously its too late for that...)
http://www.thirdgen.org/techboard/images/smilies/doh.gif

One of my buddies said it may be the heads, he said that once the water pump caught up and started to pressure-ize the system it would start flowing coolant into the intake if the heads werent torqued on....????

I really need help on this, everything else worked out perfectly, it ran, we got it timed and just all the sudden it started flowing out of the TB and the headers....

THANKS A LOT GUYS...PM OR POST REPLY RSVP http://www.thirdgen.org/techboard/images/smilies/thanks.gif

Cashmunson
08-10-2007, 09:57 PM
flowing out of the TB is probably from a bad TB. you have a coolant passage that runs into the TB to help with cold start firing. many people do a coolant bypass as a basic free mod. do you know of the mod i'm talking about? if not we'll point you towards it. not sure why it would come out of the headers unless it's just not burning off in the cylinders and leaking out.

Parker_'915spd
08-10-2007, 10:47 PM
yeah i def already did the coolant bypass.......

Irk
09-01-2007, 08:56 PM
It could be that they weren't torqued down or that the gaskets are bad...either way if you go back and make sure their torque down your gonna need to change the gaskets anyway. Once the gaskets get wet they wont stick and will continue to leak.