difference between JDM and USDM engines/what motor can I put into 90Si

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Dec 17, 2003 | 09:37 AM

90SiB21A1

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Joined: Dec 2003

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From: St. Charles, MO, USA

difference between JDM and USDM engines/what motor can I put into 90Si

I was hoping someone could let me know what engine other than the B21 will fit into a 90 Si with little or no modification to bolt it up. Also is a JDM B20A a good motor to replace a blown B21A. I can get a good deal on a JDM engine. What is the difference between JDM and USDM engines. Is there any other motors I could use with the Si 5-speed? Thanks for any info.

Dec 17, 2003 | 10:13 AM

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From: Longhorn Country

Re: difference between JDM and USDM engines/what motor can I put into 90Si (90SiB21A1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90SiB21A1 »</TD></TR><TR><TD CLASS="quote">I was hoping someone could let me know what engine other than the B21 will fit into a 90 Si with little or no modification to bolt it up. Also is a JDM B20A a good motor to replace a blown B21A. I can get a good deal on a JDM engine. What is the difference between JDM and USDM engines. Is there any other motors I could use with the Si 5-speed? Thanks for any info.</TD></TR></TABLE>

A lot of people on this board will greatly appreciate the capabilities of the B20A... plenty of torque and you can alawys get a VTEC head for top end later.

As far as JDM motors and USDM goes JDM is strictly from Japan usually with less miles than USDM. Best of luck