Just wait for people to purchase an EMS...gotta do something with the stock ECU.

 

I think I promised I'd post in here after i got my jspec.. so I have my jspec, and its in. Compression #s are around 110PSI front and rear, runs fantastic. Manages to start the car with a nearly totally dead battery (car was cranking at like 50-60RPM.. very slooooowwww) and it fired on the 5-6th rev. Aside from some external engine issues (my fault) it seems to be perfect

 

Nope. They're not. Any motor made for the Japanese market, rotary or not, is a J-spec. Japanese Specifications

Oh, and my actual thread content: I still don't have my car running. No J-Spec appraisal from me yet.

 

Maybe I should've said the only Jspec motors worth getting are the 13BT's

 

i wouldnt trust it all that much just because of the shipping can screwed everything up.. maybe if u lived in japan..hahaha

 

Well,

I have been trying since Feb. to get a decent engine from Soho\Soko Trade. I finally deciding that it wasn't worth it dealing with these ******** anymore, so the last engine that I received, the one that I could turn the flywheel with all 4 spark plugs one, is in process of a full overhaul!

Advice to those buying Jspec:

-Get all of the information on paper buying sending any payment (you'll be amazed on how everything changes once they have the $$$)

AVOID SOHO\SOKO TRADE!!!

 

update 3 months later: it's still fantastic. Still 110PSI.

 

Ha ha...a thread that will not Inevitibly die. Good. It's encouraging for past, present and future J Spec owners to post.

Anyway, I got what appears to be a mint s5 Motor. We are talking zeo shaft play and was realitively clean when I got It. The big question that reoccurs, unaswered, Is If I'm going to rebuild and street port It.

Based on what I've seen so far, It's a good bet It's a drop In. I'd like to hope I can come back and post In confidence after all Is said and done. We'll see.

 

who is good to go to if you want one that has mods already on it, or is it just luck of the draw.

 

Been 2 months for me and everythings holding up perfect besides a vacuum leak which I'll be fixing tomorrow.

 

Sorry guysm I was tired when I wrote my last post, I can't even understand what I was trying to say, except for the "AVOID SOKO\SOHO TRADE" part

 

look at my car... 5 lbs boost & it runs 13.75 @104.8 mph.. J-Specs = fine by me

 

Mazda Reman. is the way to go if you don't want porting work.
RX7.com (RP) in Texas is suppose to have some kick *** engines. Doing my S5 TII swap with them this coming summer.

 

i would get a rebuilt engine and not have to worry about it blowing on me

 

Up date time! I opted to have the s5 Motor rebuilt, streetported, sandblasted and painted with awesome results. Awhile the Motor was In pieces, It was determained I did In fact have a Motor that was In great shape Inside as It was outside. Fortunately for me, It worked out for me at the end. I guess I was lucky...

 

You can read about my bad experience buying a J-spec from Jap Performance here. Unfortunately, you can't take a businesses' word on anything seriously. And distance is a hell of a buffer zone for those businesses that would screw people over with immunity to answerability. Any Aussies that would like to ask these guys what the big idea is in person?

If I had it to do over again, I'd skip the BS and get a rebuilt engine, and buy all the parts separately that I needed for my TT into a GSL-SE swap.

 

Fine by me to!!!!

 

I believe it really depends with who you deal, I delt with a yard in japan and they even showed me videos and compression checks of what they were selling. A bit more but its worth it. But over all dont get stuff directly form japan because shipping and customs will rape you.

Get a Jspec motor close to were you live and if possible compression check it yourself.

 

My friend bought an S5 T2 with a J-spec already put in it. Engine was in there for 50,000 miles when he got it and he's put a few thousand hard miles on 'em and it still runs fine. Probably got a good one.

 

well after read those 7 long pages i think i have desided to get a j spec

 

Update: 1 .5 years, 30,000 miles later.

compression: 104 front, 100 rear. Engine has been overheated twice, once badly. Has taken 30-40 HARD pings. Sat all winter. Overrevved to 9K+ once.

still runs great.
if I went out into the parking lot right now and it was dead, I'd be upset, but I wouldn't feel ripped off. I couldn't have got a better motor for the price.

 

This place is in Australia, but looks legit, their domain registered in '01; the Warranty:

Warranty Limitations
THIS WARRANTY SHALL NOT APPLY TO ANY OF THE FOLLOWING
A) Any repair or replacement as a result of accident, misuse, lack of proper maintenance
according to the following page, repairs or maintenance improperly performed or failure of
any component or pan other than the rebuilt rotary engine.
B) Any rotary rebuilt engine that is used for competition, racing, or other related purposes
C) Any repair or replacement as a result of normal wear and tear, including without limitation,
all points, plugs, filters, belts, thermostat, air pump, etc.
D) Any rotary rebuilt engine that is installed in the improper model, or on a vehicle on which
the odometer has been altered or on which actual mileage can not be determined.
E) Any bearing failure due to abuse, accident, low / no oil pressure, no oil, or debris,
F) Any gear failure due to abuse, accident, hi RPM’s.
G) Any melted seals due to abuse, accident, or overheating
H) Any repair/failure due to broken or fractured apex seals. This is caused by pre-ignition,
wrong timing, high RPM’s, high boost etc,

The purchaser must be able to provide the following information for any warranty repair:
A) Proof of purchase i.e. sales slip.
B) Proof of radiator flow check, and rod out, repair or replace as advised.
C) Proof of oil cooler flush.

A buddy got a salvaged J-Spec from a southern California distributor, has rotor side-seal leak into rotor housing, dings in the rotor face near apex as viewed through the exhaust port, scored/burned flywheel, and moderate compression.

 

i jus ordered mine......we will see how it turns out next week....

another question.....is it possible to do comp test with teh motor out of teh car?

 

Does anyone have any information on jdm engines corp? good or bad stories? i found a full s4 t2 with transmission for 1500. i need information.