Hi Guys..
Well as i posted in my intro i just got a 1987 supra with a 1jzgte with twins about a month ago ,It runs great lots of power but..from 1st to 5th gear wen it gets to about 6000 rpm the turbos just dont open up,it feels like misfire but its not i know its a turbo issue.this is all new to me ive never had a turbo boosted engine, here what i know so far about the car..
The 1jz is stock,coils,plugs and valve seals are brand new,Compression is 158 to 162 on all cylinders,Theres a huge intercooler in front, all piping is good,all clamps ok..no leaks anywhere... there is no boost gauge no boost control but i will be installing them this winter.I can see white paint dots aligned on the throtle body so it seem its been ajusted or checked... as mentionned the engine purrrrs like a kitten and cranks up real good but at that 6000 rpm mark it just wont go anymore.The turbos are ct12a i know they have an issue with ceramic turine wheels but ive inspected them with a long neck mini cam and they look good.. no delamination present, they spin real free, everything is realy clean in there.
I know for a fact from reading here and there that vaccums are the heart of the motor so could this be a problem if i have a leak on one of the vaccum lines...ive checked... there dosent seems to be any leaks present but i will be looking closer this winter, wastegate seems to be ok but i dont know what to look for... and the bov is hks and works great,I havent been pushing it to much as i dont want to damage anything...
so ..There it is.. im gonna need a little help on this one.
Thanks
Well as i posted in my intro i just got a 1987 supra with a 1jzgte with twins about a month ago ,It runs great lots of power but..from 1st to 5th gear wen it gets to about 6000 rpm the turbos just dont open up,it feels like misfire but its not i know its a turbo issue.this is all new to me ive never had a turbo boosted engine, here what i know so far about the car..
The 1jz is stock,coils,plugs and valve seals are brand new,Compression is 158 to 162 on all cylinders,Theres a huge intercooler in front, all piping is good,all clamps ok..no leaks anywhere... there is no boost gauge no boost control but i will be installing them this winter.I can see white paint dots aligned on the throtle body so it seem its been ajusted or checked... as mentionned the engine purrrrs like a kitten and cranks up real good but at that 6000 rpm mark it just wont go anymore.The turbos are ct12a i know they have an issue with ceramic turine wheels but ive inspected them with a long neck mini cam and they look good.. no delamination present, they spin real free, everything is realy clean in there.
I know for a fact from reading here and there that vaccums are the heart of the motor so could this be a problem if i have a leak on one of the vaccum lines...ive checked... there dosent seems to be any leaks present but i will be looking closer this winter, wastegate seems to be ok but i dont know what to look for... and the bov is hks and works great,I havent been pushing it to much as i dont want to damage anything...
so ..There it is.. im gonna need a little help on this one.
Thanks