+1^

 

I'm not butt hurt, Just pointing out that a couple of internet jocks know more about these brand new engines then Jun. I guess that the B series and the 4B are the same motor? You guy's seem to be saying it's easier on the car to rev it to 10K than stroking?

How about when a couple Jun motors pop, we talk about the new motor not liking to be stroked. Until then, I'll take Jun's engineering team over the EvoM regular's.

 

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For some reason the prices in Japanese yen are ommitted from their official english site, however:

http://www.jdmtuningnews.com/articles/62308e.htm

Nerima ward, Tokyo-based garage, JUN Machine Shop continues its recent flurry of new engine mods for Mitsubishi's Lancer Evolution X (CZ4A/4B11) with the additions of a HIGH LIFT CAMSHAFT, CAMSHAFT KIT, VALVE SPRING and Ti Valve Retainer. Both Intake and Exhaust versions of the HIGH LIFT CAMSHAFT retail at 39,900 yen (including tax) respectively. Versions available are: Duration / Valve Lift 64(256) / 10.0mm 66(264) / 10.8mm 68(272) / 11.0mm 70(280) / 11.0mm. JUN's uprated valve springs are requried to use 10.8mm and higher camshafts. The Stage 1 CAMSHAFT KIT (Stage 1 : Camshaft (2 pcs), Valve spring (1 set)) retails at 102,900 yen (including tax), A higher strung Stage 2 CAMSHAFT KIT (Stage 2 : Camshaft (2 pcs), Valve spring (1 set), Type 1 Valve retainer (1 set)) retails at 147,000 yen (including tax), Finally, the top tier Stage 2 R CAMSHAFT KIT (Stage 2R : Camshaft (2 pcs), Valve spring (1 set), Type 2 Valve retainer (1 set)) retails at 160,650 yen (including tax). JUN's uprated VALVE SPRING lists at 25,200 yen. The Type 1 Ti Valve Retainer lists at 46,200 yen (including tax) with the higher spec Type 2 retailing at 60,900 yen.

 

I'm not saying its easier, but it tends to work better for high horsepower applications. Especially since the gearing is more suited to high RPM for the best acceleration so you don't have to shift into that annoyingly tall fifth gear.

JUN engines are not in the highest horsepower Evos in the world. That AMS 2 liter didn't have any problems slicing and dicing up a lot of stroker motors.

This is kind of a dumb argument. Put the type of engine that will provide the type of power delivery you like in your car and enjoy it.

 

the K24 has a lower piston speed and better r/s ratio than the old b18c motors

The K20/24 is a retardly tall deck if the deck height for the 4b11 is anywhere near the k24 you can stroke it no problem and still have a relatively low piston speed (not as low as non-stroked but easily within a safe margin)

does anyone have the deck height, and rod lenght of the stock 4b11?

 

AMS TA car ran a 2.3
AMS Drag car I'm not 100% sure but believe it's a 2.1.

What 2.0 are you referring to?

 

If the drag car is 2.1L that would be a destroked 2.4L 4g64.

 

Yeah Vincent, I know. I asked what 2.0 he was referring to.

 

I was just pointing out that AMS seems to have the same idea as Noize when it comes to using less stroke and higher rpm with a super large turbo to produce the highest amount power.

 

IIRC, the AMS drag car was a 2.0. I know its a rev monster, but its also a CT9A.

Back on the X, the gearing is shorter which will be a hinderance on strip and track.

4th gear at 7000rpm: 104mph
4th gear at 7500rpm: 111mph
4th gear at 8000rpm: 119mph
4th gear at 8500rpm: 126mph
4th gear at 9000rpm: 134mph

Yeah, you can build the tranny to have whatever gears you want. My point is that the engine and transmission's natural tendencies are to favor high RPM. Even with less boost up top from a smaller turbo, my X sustains power better than my IX. The head is amazing, and you have Mivec adjustment on both sides. It will only get better with mods.

 

But then you have to account for the enormous cost to bring it from Japan to the US. Many times people dont account for these type of expenses. To bring an item like that to the US, you are looking at around an additional $100-150.00, also to send your money to Japan usually requires a 40.00 bank transfer fee. Also there is an additional cost for the supplier to send that item from their shop to your location ($50.00-75.00).

On another note:
They have begun production on all of these parts, and are slowly being distributed to the US. Both DriveLine Motoring and Bulletproof Automotive are working together to get you the largest supply of JUN Auto products in the country.

If anyone is interested in ay of these products or wants additional details, please feel free to contact us via pm, e-mail, phone, or stop by our shop (for all you local guys).

We will also be running full test on all of their new products for the 4B11. We will post reviews and dyno sheets; so there wont be any guessing as to the value of the quality and performance of their parts.

 

For official US retail prices, you will need to contact one of their approved U.S. distributers.

 

For pricing on that JUN stroker kit, we are able to get you guys out the door (shipped) for around $4200.00

 

Read
about the AMS Drag motor.

Guess some 42R' s are going on X's....Cool! Seriously though, We'll just have to see if a bunch of shops end up offering 2.3's and how they perform. I know I have no idea yet?