japan engines inc. crankshaft

[AUTOMECH01]

has anyone used there crank's and are they as good as oem? in other words can they hold up as well as a stock one? am using one with a set a acl bearings and recon, rod's and arp's

 

[99gst_racer]

Link?

 

[AUTOMECH01]

Japan Engines

 

[Black95TSIawd]

I didn't know JE made performance crankshafts. This looks promising since, but too bad they don't have the 4g64 crank.

 

[99gst_racer]

It's not the same "JE" as the piston company.
This one is JE (as in Japan Engines) Performance.

 

[4g64fiero]

####. That.

You cant make a quality forged crank for 185 dollars. It takes that much in materials if not more.

However, I would LOVE to be wrong. That is a hell of a price.

 

[99gst_racer]

You cant make a quality forged crank for 185 dollars. It takes that much in materials if not more.

I was thinking the same thing. Eagle and Scat can't even retail a small block Chevy forged crank for twice that amount - and that's for an engine that been around for more than a half century.


Anybody already running one of these?

 

[AUTOMECH01]

i didn't know the stock mitsu crank was forged. the stock one's have casting flash on them.

 

[99gst_racer]

I assumed this JE crank was forged, but now that I look at that link again, they don't mention specs, materials, or any features in general... I wonder if they even nitride.

 

[jimmythesaint]

Its not forged. They sell forged cranks for $350-400

My guess is this "Brand New Crankshaft by JE Performance.", is a Chinese knockoff. I dont think JE Performance even exists. I think they are intentionally trying to make them sound like they were made by JE Pistons, and they dont make anything but pistons.

 

[AUTOMECH01]

so does anyone know if it's as good as a stock one or am i asking for trouble?

 

[99gst_racer]

so does anyone know if it's as good as a stock one or am i asking for trouble?

Unless fifty people come into this thread claiming they've put 50K on one of these and had no issues, I'd rather spend the money on a used stock crank and know that it's going to function just fine. Just my .02.

 

[AUTOMECH01]

well i have posted twice a wtb good used crank and for 1 month straight i got replies from people promising pic's and they never came through. they just kept leading me on and nothing. some of these member's don't need to be. thier just out for thier own.

 

[snakeyes711]

I'd agree too, name coincidence. This is JE pistons, all the guys I know that build bikes use their kits. JE Pistons Manufactures Quality Forged Pistons for the Domestic Automotive, Sport Compact, Powersports and Racing Markets

 

[jimmythesaint]

so does anyone know if it's as good as a stock one or am i asking for trouble?

I would stay away from it. Notice how they list very little info about the manufacturing of the crank. I doubt its even got the titanium nitride coating.

As for finding a used one, your options at the junkyard should be wide open.
7-bolt cranks shouldnt be hard to find since they have been used in so many engines. Supposedly all 7 bolt crankshafts are interchangable.

Heck try some of this sites supporting vendors. DSMgraveyard and Mitsubishigraveyard should have one. Might cost a bit more, but if its your only option...

 

[AUTOMECH01]

i did no one had one at time so i picked one up for 150.00 with all acl bearings. will give it a go will post later on results

 

[jawar666]

I know this is an old thread... But I would like to throw my opinion and my story...

I bought one of these cranks... Installed it along with Clevite Main and Rod Bearings, Wiseco Pistons 85.5mm and 9:1 CR, and Eagle H rods...

According to the machine shop, piston skirt were .004" Piston To Wall Clearance, and the bearings to crank oil clearance were .002"... I used Mobil 1 Full Syntetic 10w40 Oil all the time...

4000 miles later, I spun a bearing! I don't know how yet....


I took everything back to the machine shop to have them check everything again... So far they are telling me the coating of the crank failed and now the Bearings to Crank Oil Clearance is .005"

I need to double check, but so far the only evidence of the spun bearing is the quality of this JE crank...

I won't give this crank another try, I'm looking for an used one...

My 2 cents...