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Posted on Apr 07, 2010
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I have a 90 crx si with a b16a vetec engine in it. I was wondering what kind of engine is in it because it is a swap. the motor number is 1207276? and i have an idleing problem and im pretty sure that its the vacuum but not 100%. Any help would be great!!!!

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rb3crx

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  • Posted on Oct 12, 2010
rb3crx
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A B16A with no number fallowing it is a JDM engine. If it was a B16A1 for example it is a USDM engine. As for the idle problem its probably a tps sensor and if it idles really low rpms you should up the idle at the trottle body to idle at 800 rpms to be safe, To low of a idle will cause bearings to go out and throw a rod.
Lookj at the valve cover if it is a jdm you will know if it is a SIR or a SIR2, SIR has larger font for the DOHC and smaller font for the VTech The sir2 has larger font Vtech and smaller font DOHC. The SIR2 also has oil jets underside of pistons and rods to help lubricate piston rod conections.

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