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-   -   Hmm buy and rebuild or jspec? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/hmm-buy-rebuild-jspec-743715/)

meximan 03-30-08 07:19 PM

Hmm buy and rebuild or jspec?
 
Ok so im contemplating this idea. I have the options of buying a S4 TII motor out of a 10AE, the car is beat up, and looks like its on its last legs. I had the chance to see this motor run, after tinkering with it for a while. Surprisingly it didnt seem to have a hard time running once started. WE let it run for about 5-10 mins while i looked around the car up and down side to side. It was blowin a lil smoke when reved but at idle was fine. On the turbo side of the motor, i did notice that one of the lines to the turbo was glowin red... What this means ? i dont know but I do know its not supposed to do that lol. BUt made me think maybe the turbo has some problems/needs rebuild and could be the cause of the smoke.??? Now i have a 87tII that needs a motor. I was going to save up the 900 to pick one up from a local import place, howver im always a lil skeptical of buying used motors/ or motors that may have been sitting for a while. So these are my thoughts....

1. Buy jspec for 900 and get injectors cleaned b4 installing

OR

2. Buy this TII motor for 200-250 bucks. Invest in a atkins rebuild kit 425$ on group buy. + another 20 bucks from some videos ect. And attempt my 1st rotary rebuild.

So what do you guys think?

NJGreenBudd 03-30-08 07:29 PM

try the rebuild on the TII motor for $200, you'll still have to rebuild the j-spec.

meximan 03-30-08 08:33 PM

I think jspecs have alot of iffy ness to them. ALot of people suggest rebuilds, and i have heard for many unfortunate happenings to low mile jspec motors. Then there are some that do just fine. The iffy ness is what gets to me.

hatemy7 03-30-08 09:21 PM

well my last TII I bought a JDM front end and I rebuild it and my buddy rebuild the original motor and guess what, there a 22hp difference between us, the j-spec motor did a lot better, stock vs stock by the way.

so i would go with the jspec

meximan 03-30-08 10:21 PM

hmm cuz wear and tear>?

farberio 03-30-08 11:12 PM


Originally Posted by hatemy7 (Post 8037388)
well my last TII I bought a JDM front end and I rebuild it and my buddy rebuild the original motor and guess what, there a 22hp difference between us, the j-spec motor did a lot better, stock vs stock by the way.

so i would go with the jspec



jspec = no emissions
no emissions = no cats
no cats = free flowing exhaust
free flowing exhaust = more HP

farberio 03-30-08 11:13 PM


Originally Posted by meximan (Post 8037634)
hmm cuz wear and tear>?

No you rebuild jspecs because they sit for a long time.

meximan 03-30-08 11:17 PM

well yea i figured that one lol... :)

ZeroDrift 04-02-08 12:54 AM

Best bet is to rebuild the engine. Its the one sure fix. On the plus side, you can port it as well! Good luck w/ your project!

well uhhh 04-02-08 01:01 PM

i had the same conflict, and as stated i decided to just keep my motor and rebuild. If you can/want to do it yourself, you will save quite a bit. I just couldn't bring myself to spend 800-1000 plus shipping for something i woud have to most likely rebuild when i had a core already. Plus the knowlege you gain from doing the work yourself.


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