ga70tt
07-11-10, 09:20 PM
Ok so ill start by telling the story of the events as they unfolded...
I own a GA70 supra which the 1g-gte became a bad idea and went for the 1jz
few motors later i got one to work with a microtech etc etc...
drove round fine for about 8 months until the pivot ball in the bellhousing broke... dellows then informed me i must use their clutch fork and throwout bearing instead of genuine toyota items (dellows bellhousing jz-w58 as at the time i couldnt or didnt want to wait for a genuine one to show up)
while reinstalling the gearbox i cracked back of the block where the bellhousing bolts to so the motor was pulled to have that welded up and ive learnt my lesson about how not to reinstall a gearbox... (dont try to pull it on by tightening the bolts)
so at this point i decided the twins were not to go back on the car... and opted for an ebay spec t04z copy.
so eventually the car all went back together and it started and ran but upon looking into the tune the car would lean out coming onto boost...
due to this discovery and a voltage issue (volts dropping under load) i decided to rewire the microtech in a less ghetto way...
the car also was triggering the home/ref/rpm error on the microtech at about 4000rpm which lead me to believe the crank or cam sensor trigger was wired back to front...
also another issue reared its head around the same time where the car would start and idle for about 10 seconds then stall... i figured it was tune related as it was getting into winter and getting much colder and the cold start on the car had not really been looked at yet alot of fuel had been added to the tune to try stop it from leaning out under boost... also when it ran for the 10 seconds or so it would stall under any application of throttle
anyway months went by and i slowly rewired it all... went to restart the car and what do you know same start idle briefly stall situation... throttle would instantly stall the car...
ive checked cam crank and tps sensor wiring against a mates wiring (1jz-microtech) and they are now the same... car will start sometimes run rough then stall or sometimes run rough then run nicely then stall
im pretty well out of ideas now other than it being tune related... wondering if there is anything ive been overlooking...
cliffs
-car used to run
-car then had turbo upgrade
-car leaned out on boost
-car had voltage/wiring issues
-car would start idle for 10 seconds then stall
-rewired microtech on car
-still has same issues of starting but not continuing to idle
-idle is rough now as i believe the tune might be out due to previously having crank/cam sensors round the wrong way...
so anyone want to throw out any ideas...
im guessing a new set of plugs wouldnt go astray however would like to see if anyone has any better ideas...
specs of the car...
ga70 supra
1jz-gte conversion
w58
ebay spec t04z copy
ebay spec manifold cleaned and braced
tial 44mm wastegate
us spec oem 2jz-gte 550cc injectors
ebay spec front mount
microtech lt12s
walbro 255l fuel pump
cheers pf brains trust
I own a GA70 supra which the 1g-gte became a bad idea and went for the 1jz
few motors later i got one to work with a microtech etc etc...
drove round fine for about 8 months until the pivot ball in the bellhousing broke... dellows then informed me i must use their clutch fork and throwout bearing instead of genuine toyota items (dellows bellhousing jz-w58 as at the time i couldnt or didnt want to wait for a genuine one to show up)
while reinstalling the gearbox i cracked back of the block where the bellhousing bolts to so the motor was pulled to have that welded up and ive learnt my lesson about how not to reinstall a gearbox... (dont try to pull it on by tightening the bolts)
so at this point i decided the twins were not to go back on the car... and opted for an ebay spec t04z copy.
so eventually the car all went back together and it started and ran but upon looking into the tune the car would lean out coming onto boost...
due to this discovery and a voltage issue (volts dropping under load) i decided to rewire the microtech in a less ghetto way...
the car also was triggering the home/ref/rpm error on the microtech at about 4000rpm which lead me to believe the crank or cam sensor trigger was wired back to front...
also another issue reared its head around the same time where the car would start and idle for about 10 seconds then stall... i figured it was tune related as it was getting into winter and getting much colder and the cold start on the car had not really been looked at yet alot of fuel had been added to the tune to try stop it from leaning out under boost... also when it ran for the 10 seconds or so it would stall under any application of throttle
anyway months went by and i slowly rewired it all... went to restart the car and what do you know same start idle briefly stall situation... throttle would instantly stall the car...
ive checked cam crank and tps sensor wiring against a mates wiring (1jz-microtech) and they are now the same... car will start sometimes run rough then stall or sometimes run rough then run nicely then stall
im pretty well out of ideas now other than it being tune related... wondering if there is anything ive been overlooking...
cliffs
-car used to run
-car then had turbo upgrade
-car leaned out on boost
-car had voltage/wiring issues
-car would start idle for 10 seconds then stall
-rewired microtech on car
-still has same issues of starting but not continuing to idle
-idle is rough now as i believe the tune might be out due to previously having crank/cam sensors round the wrong way...
so anyone want to throw out any ideas...
im guessing a new set of plugs wouldnt go astray however would like to see if anyone has any better ideas...
specs of the car...
ga70 supra
1jz-gte conversion
w58
ebay spec t04z copy
ebay spec manifold cleaned and braced
tial 44mm wastegate
us spec oem 2jz-gte 550cc injectors
ebay spec front mount
microtech lt12s
walbro 255l fuel pump
cheers pf brains trust