1JZ supra engine into a NB8B

oongie · Postby **oongie** » Wed Sep 17, 2008 4:05 pm

Hi All,

As the title suggest an opportunity has risen and a mate can sell me his 1JZ engine with MX5 conversion kit ... still waiting on costs but is it worth it.

Would like to hear everyones 2c worth

Cheers Paul

16bit · Postby **16bit** » Wed Sep 17, 2008 5:37 pm

no - iron block will ruin it. you are better off buying an LS2 conversion kit from FM in the states.

RG.net · Postby **RG.net** » Wed Sep 17, 2008 5:44 pm

or a rotary conversion, keep it mazda man!

Sheck · Postby **Sheck** » Wed Sep 17, 2008 9:51 pm

hell yea go the 1J!!!! They are only a few, tens of, pound heavier than an SR20, from what i've heard about ppl tossing up the RB or 1J conversion into a silvia.
1J will make a sh*t load of power on the stock bottom end, though a LS would be nice you actually have the opportunity to do the 1J so its more realistic and i reckon it'd be awesome!!

ampz · Postby **ampz** » Wed Sep 17, 2008 10:49 pm

Good luck with compliance in a 2002 mx5

Blue94t · Postby **Blue94t** » Wed Sep 17, 2008 11:01 pm

Make sure you do your research first, then if you are still keen I reckon go for it.
Would be a great fun car, and an animal with the right turbo setup on it. And one other thing, take your cost estimates for the conversion and double it, maybe even triple it. When engine conversions happen costs have a habit of running away a bit. They are a great challenge though, and very rewarding when finished.
Jake

PASHN8 · Postby **PASHN8** » Thu Sep 18, 2008 12:54 am

Is this Chuck's setup?

Blue94t · Postby **Blue94t** » Thu Sep 18, 2008 9:03 am

Nark,
I have done a few engine conversions myself and have always found them rewarding. Especially when you go for the first drive.
Jake

bruce · Postby **bruce** » Thu Sep 18, 2008 10:13 am

Basically, I don't think you would be able to get it legally registered as;
-Engine capacity (2.5 and a turbo)
-Age of motor (it is older than the body)
-you're in NSW which is very strict with Engineering.

bruce · Postby **bruce** » Thu Sep 18, 2008 10:37 am

If that's true, that means you have to go down the track of an emissions test which is complicated and expensive.

oongie · Postby **oongie** » Thu Sep 18, 2008 12:31 pm

Thanks all for your 2c worth and more!
Even though it may be boring might just go for an insane NA beast.

oh btw its not Chucks old setup its somebody else's.

Just for the sake of procrastination now whats the rarest setup people have seen in 5's?

Cheers Paul

bruce · Postby **bruce** » Thu Sep 18, 2008 3:06 pm

Saw a picture of an RB26 in an NA (Japan).
20B in the Qld NA Bullet copy (related 2JZ NA as well).

Postby **Okibi** » Thu Sep 18, 2008 8:28 pm

mmm 20b MX-5

As well as the weight issue, you want to make sure the gear box still uses the power plant frame.

It's an important consideration a lot of engine conversions ignore.

C.A.R. · Postby **C.A.R.** » Fri Sep 19, 2008 12:11 am

I'm still (after all of the negativity from some people around) planning to put a Honda C32A (175kw, 295nm ALL ALLOY 3.2 litre V6) into an NA (no plans to register it)