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300zx engine compression test

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Uploaded by on Aug 24, 2008

Compression test of a newly rebuilt Na motor for the 300zx (vg30de) Okey so during the making of the video the battery died on us and i have to get a fresh one. Once we did that all cylinders tested perfect at 170psi. I also has to replace 3 injectors thats were not ohming out within spec and now all injectors are perfect at 12.6 +/- .2 ohms. Will keep the videos comming but thats it for now. Thanks for watching

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Autos & Vehicles

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Uploader Comments (jthiani)

  • Great work, a reason for not converting to TT? That hole is the old blocks cylinder wall is BAD lol! I just dropped in my second engine and ive only owned the car for a yr and a half :/ still love the car though.

  • It will eventually be converted to TT. The motor sitting behine the red car in the video is the TT engine. Has to get machined, rebuilt and upgraded to 700+ HP. This motor is a temp motor just so that the car is drivable

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All Comments (26)

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  • Will a 1993 j30 motor swap out to a 1993 300zx 2+2

  • really meant to ask can you help with my problem with the video above

  • Thanks so much for the video! Seem's a little tricky to do a compression test by yourself, but at least I got an idea of what it is I need to do!

  • I love Z's I'm turning 16 in 6 months and I want a 300zx t tops 5spd with twin turbo preferably black or red. Hope I get a 93, I plan to go to UTI for college and get a job at a shop near iowa where I live, I hate snow tho!! Great video!!! Nice black Z!!

  • how many z's u got!

  • Thank you very much for your video. Greets from Spain!

  • My timing belt broke and bent all my intake valves. but before that i never tested the compression so i got new valves and cleaned everything real good so hopefully when i get it all back together i can at least bust the tires, and its an auto non turbo so i will have to put some performance on it before its really puttin out anything.

  • yes you do......I had the same problem

  • do you loose tons of horse power if you have low compression cause my z31 has massive loss of power to where i cant even spin the triers

  • Shut you mouf daniel!

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