2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
View Poll Results: What do you think of buying a jspec?
Great idea, you can buy 2 jspecs for the price of 1 rebuild
108
62.07%
I don't trust those things for shit
66
37.93%
Voters: 174. You may not vote on this poll

J-spec stories...

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Old May 30, 2002 | 05:39 AM
  #27  
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From: West Virginia
Originally posted by NOTA V6
I bought my '90 J-spec 13BT from Jap Performance still mounted in the wrecked front clip
How much was the shipping on your clip? I've seen Jap Performance's prices before and talked to them about both a 13BT and a 20B Cosmo clip, but the fellow I talked to wasn't sure what shipping would be like to the US.
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Old May 30, 2002 | 10:28 AM
  #28  
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From: Bloomington, MN
Running budget on my website.

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Old Jun 13, 2002 | 11:25 PM
  #29  
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I ordered a 13B-RE from Dave at fc3s.org. Turned out the rear rotor only had 30psi, e-mailed Dave the day after I figured that out and the next week I had another engine waiting at the loading dock for me. I would deff order from fc3s.org, if it's bad for whatever reason they take care of you.

P.S. but I still don't know if it's totaly good yet, still about $3000 from running it but it did have 3 even bounces on my gauge for what ever thats worth.
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Old Jul 11, 2002 | 09:20 PM
  #30  
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From: Boston
Hey theres a websight i dident see you guys mention
What about Mazdarx7engines.com they seem to have good prices, they have a 2 year warranty, and they ship free anywhere in the US... seems pretty damn good to me-check it out
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Old Jul 11, 2002 | 09:40 PM
  #31  
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From: North Reading, MA
same price as most, but free shipping is damn good...
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Old Jul 12, 2002 | 10:31 AM
  #32  
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Originally posted by RylAssassin
Hey theres a websight i dident see you guys mention
What about Mazdarx7engines.com they seem to have good prices, they have a 2 year warranty, and they ship free anywhere in the US... seems pretty damn good to me-check it out
Ya seems real good. For $2300 you can get a streetported fully rebuilt engine with a 2 year/24,000 mile warranty. Sounds good to me
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Old Jul 12, 2002 | 12:28 PM
  #33  
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From: Near Memphis
I haven't personally bought a J-Spec, but I have installed them for others and helped install the rest.

In the past few months I have dealt with 4 J-Spec engines. 3 from one source (who I will not name) and one from a different source.

Out of the 4 engines that have been through our garage at the house, two were completely dead (apex seals embedded in the rotor face), one went to lunch a couple of days after installation (had a funky idle), and one is running perfectly.

3 out of 4 dead J-Specs makes me weary of getting one when the time comes.

One thing to note though, all of the dead engines are being taken care of by the vendors with no complaints! All in all, if you don't get one that runs, most vendors will work with you and get another one to you quickly.
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Old Jul 12, 2002 | 01:14 PM
  #34  
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Again, my $.02.
I went to buy a bass guitar. The guy says, oh, this guitar is pretty cool, it's $400... Then in 6 months or so, you will be too good of a player for it and will want a better one, which is this model, for $800.
The moral of my story?
I would rather pay double the price for something I know will last, that I will be happy with, and that is done the right way rather than settle for something which might need to be replaced.
As for how they all have 30,000 miles or less on them, it is my understanding that there is a law in Japan that you have to change your engine every 30,000 miles... At least, that's what a buddy of mine who was stationed in Japan told me.
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Old Jul 17, 2002 | 04:33 PM
  #35  
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There is absolutely nothing that states that you have to 'change your engine' in japan every 30k miles... that's ridiculous!


have fun dreaming
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Old Jul 18, 2002 | 07:18 AM
  #36  
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From: St. Charles, IL
yah im gonna go with that one, no law. but ive bought 2 motors from makoto and both times had excellent shiping from california (4 days) to chicago, IL and paid 855 to my door both times (no price changes in 6 months). i blew my last one to carelessness on MY part so i will definitely buy another from muy supplier. best part is they always have them in stock.
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Old Jul 18, 2002 | 09:15 AM
  #37  
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From: Mississauga
for the price... you can get like 3 J-specs for the price of 1 mazda reman,

so just buy 2 motors find a good rotary mechanic.... take your original motor, the 2 j-specs and have him rebuild your original motor using the other 2 for parts making 1 frankenstein original motor.

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Old Jul 18, 2002 | 01:58 PM
  #38  
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From: Canton MI
I got one and havent got it into my car yet...my got my fingers crossed
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Old Jul 19, 2002 | 02:33 PM
  #39  
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From: Eden prairie MN
j spec

we just put one in and it ran mint we broght it to the track and on ten lbs we ran 13.3 with jic cat back and removed vacume lines and turbo xs bov stock tires stock turbo it was about 92F outside
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Old Jul 30, 2002 | 03:54 PM
  #40  
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i WAS a fan of jspecs and now i'm a little iffy on them...6 months ago i put mine in...ran real sweet until 3 days ago...blew all three apex seals in the front rotor...with the money i spent on getting it i coulda add a little more for a rebuilt one that would last more than 6 months...now i'm without my rex...AHHHH!!!!
rebuilding time...
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Old Jul 31, 2002 | 09:28 AM
  #41  
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Originally posted by piston eater
There is absolutely nothing that states that you have to 'change your engine' in japan every 30k miles... that's ridiculous!


have fun dreaming
Yeah, I think that the mileage very well may be an accurate reading, however its for a different reason.
I personally believe that because Japan's Transportation system is so sophisticated and efficient, many people choose to ride the train, rather than drive a car. Plus, the cities are really close to each other, so some people ride bikes/walk there.

bio-rotary, I feel your pain. My motor is blown too, and I found a hell of a deal on a new one, but they want alot to put it in, so I won't be driving for a while.
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Old Aug 2, 2002 | 06:22 AM
  #42  
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Hey everyone, Ime buying a RX-7 and after reading these threads I almost **** in my pants. In autotrader I have been looking at 2 cars.

1987 MAZDA RX7 Turbo, great cond., 425+hp, 245 mi. on new motor, too much to list, car flies, you'll love it, $7,000 obo.

1986 body style with 1987 completely rebuilt turbo JAP spec rotary motor and transmition with less then 1000 miles on it. With Countless performance modifications includeing 18 inch Rims with new Falcon tires, lowered 2 inches, Cusco/Greddy GT style wing, OBX strut bar, erebuni Bodykit frount bumper and sideskirts back bumper avaiable, Alpine CD player, Razo shift ***, 1987 completely rebuilt turbo JAP spec rotary motor and transmission with less then 1000 miles, 3 millimeter Apex seals that are capable of 45 pounds of boost, Port and polished motor, Racing beat 3 inch downpipe and sciencler, custom exhaust to an arospeed muffler, ACT Xtreme racing clutch, Very fast and fun to drive 6500 OBO have receipts

Ime not 2 good with engine's, Can someone tell me how I can tell if these cars are pure crap, like the engine, Ime only 17 and dont wanna get ripped off.
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Old Aug 2, 2002 | 06:28 AM
  #43  
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From: Where there's only two seasons, hot and wet! I love Okinawa
Originally posted by PuppyDoc
As for how they all have 30,000 miles or less on them, it is my understanding that there is a law in Japan that you have to change your engine every 30,000 miles... At least, that's what a buddy of mine who was stationed in Japan told me.
YOUR BUDDY LIED TO YOU They sell cars with 100,000 K regularly at used car lots...
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Old Aug 2, 2002 | 06:33 AM
  #44  
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what???
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Old Aug 2, 2002 | 06:55 AM
  #45  
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From: bel air maryland
matthew111, read the first page, jspecracer7's response was to a statement there!:d
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Old Aug 12, 2002 | 01:49 PM
  #46  
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i just went through two jspecs they SUCK
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Old Nov 28, 2002 | 12:38 AM
  #47  
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one reason for j-specs to have such low k's is they spend half their time idleing in traffic... 30k of stop start sitting idle in traffic is very different to 30k actually driving...

Charlie
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Old Feb 4, 2003 | 07:41 PM
  #48  
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I always heard that it was more expensive to register your car and have insurance on it after a certain mileage. Of course I don't live there so I have no idea if this is true or not.

I have played with 3 different J-spec engines. 2 of them we just swapped directly into the cars and they worked great. The third one is my 2nd gen engine. I pulled it apart to port it. It looked brand new inside! I've never seen a used engine look so good. Now its ported and it runs better than ever!
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Old Feb 5, 2003 | 08:01 AM
  #49  
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This is the real deal on all Japan cars. In japan they base your insurance/ reg fees on the amount of mileage on your engine.. Sometimes if the car has alot of miles, its cheap to replace it with new, than to pay the extra price in fees to keep driving the older more polluting engine.

I got one from Nippon Motors and it was a perfect engine, and hit full boost on stock guage before 2000 rpm...Its been running for over 1 year now at 10 psi...
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Old Feb 16, 2003 | 10:44 PM
  #50  
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I know this isnt RE but still a Jspec engine story. I baught a red top SR20DET Silvia clip from Neislin motors over the summer. It came to $2400 plus shipping. Wow what a damn headache. After pulling the engine all the oil poured out. They didnt have any warrientys or such. I had to yell at them for 2 weeks straight for my money back. Now I have my FC:P With my experince you need to go to known dealers that carry nice warrentys. My $.02
-Stew
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