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HybridZ

turbo swapped 79 chugging


newby92

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the car has been really wierd since we finished the swap. at about 3k rpm the turbo is spooled and everything is good but it chugs really bad drops power really bad. if you floor it it will pull slowly to 4k and once you get to 4k it runs fine again. its like it is being starved of fuel. i just ordered new fuel injectors, they are stock 270cc injectors and im hoping this fixes it. any ideas.

 

im running a compression check on it this weekend. this motor has never been opened up by me or my dad, we just through it in and it ran so i have been driving it just enjoying the car. i replaced the o2 sensor last week. any help is greatly appreciated

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it is a complete swap from an 82 zxt, everything got swapped from the ecu, wiring harness, everything, i am using the stock non turbo trans and rear end until it blows. but other than the trans and diff everything on the car is directly swapped from the turbo car, even the cruise and turn signal/head light switches got changed so they were direct plug and play with the new ecm.

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spark plugs cap rotor and alot of sensors have been replaced. is the fuel pump different between the turbo and n/a motor set up? im not sure if that was changed i will have to ask my dad. thanks for the input. i never even thought about the fuel pump or regulator as it pulls fine in the upper rpm's. i know for a fact that all of the vaccume lines are set up right. me and my dad spent 2 days with the manual and routing the lines.

 

i think i will just drive it as it is if the injectors dont fix it, i have a 5.3 and t-56 trans to swap into i just wanted to wait to do the swap so i could slowly accumulate parts but it looks like i might have to bump this up on my list.

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Have you read the efi bible? This might be very usefull for you right now.

Around 3800-4k you are in wot condition. My zx/na leaps into action at that rpm because my tune down low is off. (stock stuff)

 

A wide band would sure be handy right now;)

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  • 3 weeks later...
spark plugs cap rotor and alot of sensors have been replaced. is the fuel pump different between the turbo and n/a motor set up? im not sure if that was changed i will have to ask my dad. thanks for the input. i never even thought about the fuel pump or regulator as it pulls fine in the upper rpm's. i know for a fact that all of the vaccume lines are set up right. me and my dad spent 2 days with the manual and routing the lines.

 

i think i will just drive it as it is if the injectors dont fix it, i have a 5.3 and t-56 trans to swap into i just wanted to wait to do the swap so i could slowly accumulate parts but it looks like i might have to bump this up on my list.

 

 

Did you replace the fuel pump?

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fuel pump the n/a fuel pump will not run the turbo motor also note that the original fuel pumps will tend to dye slowly and make you think their is something else wrong from your injectors to your fuel preasure regulator more than likely ok unless they are leaking.

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