Hey Gang,

Is there any way to check the condition of a J-spec motor without installing it?

regards,

Hakan

 

Sure, dissasemble it.

 

I know... but then I need to put it back together...

Anything else?

 

Where did you get your JSPEC?

I'm looking to get one also...with the transmission if possible.

Normally you would do a pressure test on it.

 

Rebuild it! JSPECS ARE NOTHING BUT JAP JUNKYARD ENGINES THAT THEY DON'T WANT.

 

hey banzaitoyota where would I find a good running JSPEC engine?

 

There is a method of checking the compression w/o installing the engine and running a real compression test. I learned it from Bruce Turrentine's 13B rebuild video.
Just turn the engine. For each half turn, you should here a chug. Basically each face of the rotor will make a chug or whoosh sound. 2 rotors equal 6 chugs. If you here 6 consecutive chugs from turning it 3 whole times, the engine's compression is good.
This is what he demonstrated in the video.I am not sure how accurate this is, but I think Bruce Turrentine knows his stuff.

 

That sounds pretty weird, but I'll give it a try.

 

I have a bell housing I bolt up and run a starter on

 

FC3S.org has some coming in soon

 

Be sure to remove the Spark Plugs first ensuring a better auditory "chug", before turning over.

 

I wouldn't say they are all horrible engines like a lot of people say....I put a Jspec in mine a while ago, and it runs great, perfect compression, and no problems so far.

 

Nothing will be more accurate than a LEAKDOWN test.

 

And what is that??

 

A leakdown test wont work, and a cold compression test wont work because the seals dont do **** when the engines cold.

Either have faith and install it, or tear it apart. Or get one of those little cameras on a flexable rod and look in the ports. BTW I have no idea where you get those...

 

I wouldnt buy an engine that had 60psi, no matter how cold it was.

 

My engine was showing 90psi on the front rotor in -15C weather. I guess thats a good thing

 

Where can I get a good JSPEC engine from you guys? Hook me up!

 

whats so special about j-spec engines? are they higher compression? or is it novelty?

 

more of a novelty dude...and more power!

 

They're cheap. $900 for a longblock J-Spec engine versus $1800+ for a rebuilt shortblock.

I could have had my TII running five months ago, but I'm opting to do things right and get a professional rebuild.

 

Nope, and considering the condition of many of these engines, you're likely to have less power than if you purchased a good engine.

Now, JSpecs have their place. Say you're nearly broke and you just blew the engine in your daily-driver TII, then you're a good candidate for a JSpec. JSpecs also make good cores for rebuilds and for N/A-TII conversions, but other than those scenarios, they're pretty worthless.

If you are planning on going with JSpec, go with www.fc3s.org, they happen to get good batches of them in...surprisingly.

 

Please DO NOT post erroneous information when you have NO CLUE about what you are talking about

 

yea yea damn...dude I was just kidding around...gesh. Sorry man.

 

Well can we can back to the matter at hand-

how to check the engines?

I picked one up on the purchase and want to find out the condition before installing it.