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boost > vtec
1996 del Sol VTEC
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151 Posts
doesn't everything just bolt up from the USDM to the JDM?
 

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Discussion Starter #4
what I guess I'm trying to say is

1. is it just a direct swap?
2. is it cheaper to rebuild a us to jdm specs, or just swap
3. If I go the build route, what parts are different?


thanks
 

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boost > vtec
1996 del Sol VTEC
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151 Posts
good point. it wouldn't really make sense, lol.
 

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Discussion Starter #7
maybe I'm not phrasing right. I want to make some small upgrades. I will rebuild the motor sometime in the near future. My son has a probe gt. He wants to put in a klze j-spec engine. the only difference between the two is ecm, intake manifold, camshaft specs, and .5 points in cr, block is the same. Now a klze can be had for about $1000, but to do a rebuild using the klze parts would be considerably more than just buying a replacement and dropping it in. I want to know if the same holds true for this engine. I dont plan on going crazy, just want a mild HP increase and a newer motor.

thanks
 

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there are more distinct differences but it depends on the generation.

gen 2 jdm has a different ecu, no egr, ceramic turbo (very small upgrades)

gen 3 has much better turbo, 540cc inj, better fuel rail, different intake manifold (huge upgrades)

i own a jdm gen 2 and have used usdm parts pretty routinely. can order anything at local toyota dealership. main difference i have seen so far is the 93 jdm uses the 9 bolt exhaust manifold that wasnt used here until 94 (iirc?).

gen 3 is more of a hassle but there are a number of dealerships that stock parts. try jay marks toyota in texas.
 

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elim70 said:
maybe I'm not phrasing right. I want to make some small upgrades. I will rebuild the motor sometime in the near future. My son has a probe gt. He wants to put in a klze j-spec engine. the only difference between the two is ecm, intake manifold, camshaft specs, and .5 points in cr, block is the same. Now a klze can be had for about $1000, but to do a rebuild using the klze parts would be considerably more than just buying a replacement and dropping it in.
have fun with that one...... klz's suck ass to work on!
 

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jdm 2nd gen ftw!
mr2 turbo
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265 Posts
jdm are way cheaper to do a swap atleast when i looked. i foudn a good condition usdm motor for 4k and a jdm for 2.3k hmmm i wonder what i will use.
 

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400whp club here I come!!
HT MR2 Turbo
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3,546 Posts
2nd gen -> 2nd gen... The power difference is due to a different turbo, emissions equipment and fuel maps. If your state has strict smog laws you will not be able to get away with running a JDM engine. The power difference is trivial if you plan on modifying your car. Although the JDM CT26 is much nicer to cruise around with IMO.
 

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boost > vtec
1996 del Sol VTEC
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151 Posts
it has a ceramic wheel, right? whereas the usdm one doesn't?
 

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Discussion Starter #14
ishcoleobo, that was kinda the answer I was looking for. I live in NY. Emissions tests at present are on 1994 an newer vehicle so that really isnt an issue. I guess I will rebuild my usdm.

thanks
 

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boost > vtec
1996 del Sol VTEC
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151 Posts
not when you're boosting :p
 

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jdm 2nd gen ftw!
mr2 turbo
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265 Posts
lol...ya i can watch my gas go down if i drive it hard but while in vaccum....it never moves...kinda freaky i keep thinking my gas gauge broke.
 
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