cyclops
14-09-2006, 03:22 PM
hi all cool site.
heres my problem
I purchased a L reg mk3 golf td as a work runner the performance was nowhere to be seen ( rough idle and a max speed of 80mph )
i put this down to the fact that when i got the car the injector pump was hanging of its mounting,
i reset timing etc but it was still the same. so i removed the head had the valves checked( non were bent) had the recut and a de-coke.
it was at this point whilst purchasing parts i have found the the block and head are from a tdi ( engine code 1z ) rather than the aaz it should have fitted.
now from what im aware is that the 1z engine has a lower compresion ratio ( 19 -1 ) and a higher fuel pressure for the injectors and the aaz had a higher compression ratio 23 - 1 and a lower fuel pressure. this leaves me with a problem tht i now have a lower pressure injector pump and a lower compression engine which all adds up to poor power.
so what to do ??
can i make a tdi injector pump work correctly without an ecu etc???
should i buy a larger turbo ?? ( presently has a k14 )
also whilst the head is off should a flow the ports ?? ( yes i know how to do this :o )
any help ideas greatly appreciated
heres my problem
I purchased a L reg mk3 golf td as a work runner the performance was nowhere to be seen ( rough idle and a max speed of 80mph )
i put this down to the fact that when i got the car the injector pump was hanging of its mounting,
i reset timing etc but it was still the same. so i removed the head had the valves checked( non were bent) had the recut and a de-coke.
it was at this point whilst purchasing parts i have found the the block and head are from a tdi ( engine code 1z ) rather than the aaz it should have fitted.
now from what im aware is that the 1z engine has a lower compresion ratio ( 19 -1 ) and a higher fuel pressure for the injectors and the aaz had a higher compression ratio 23 - 1 and a lower fuel pressure. this leaves me with a problem tht i now have a lower pressure injector pump and a lower compression engine which all adds up to poor power.
so what to do ??
can i make a tdi injector pump work correctly without an ecu etc???
should i buy a larger turbo ?? ( presently has a k14 )
also whilst the head is off should a flow the ports ?? ( yes i know how to do this :o )
any help ideas greatly appreciated