chris51608 Posted April 14, 2009 Share Posted April 14, 2009 ima buy a rb20det this weekend and they perform compression test on the spot..wat will be the average compression of the rb20det..and also have anybody bought a motor from jdmenginedepot in nj thanks Quote Link to comment Share on other sites More sharing options...
scottyMIz Posted April 14, 2009 Share Posted April 14, 2009 I bought my rb20 from jdm engine zone in clifton NJ not sure if that is the same shop or a different one. If it's the same they are a good bunch of guys and tell them the guy with the rb20det powered sonoma says hi, the truck is running great!(they like my truck) When i did my compression test it was about 130 across the cyls the actual psi will vary depending on the gauge your using. My gauge is a cheap harbor freight gauge but the main thing is that they are very close in readings from cyl to cyl and that the gauge reads a reasonable amount. Quote Link to comment Share on other sites More sharing options...
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