Rev limiter

[Fizzlepop]

I've noticed that the 2.0L doesnt completely redline. Redline shows 6.5k on the tach, but mine seems to hit 5.5k and abruptly stop. Doesn't rev bounce, just feels like I'm slamming on the brakes and hangs out there.

Also notice in neutral and park its limited to 3.5k RPM. Are these by design? Will turning off the nannies with a tazer eliminate?

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[Chocolate Thunder]

That’s idiot proofing. Never redline an engine with no load. It’s bad.

 

[Fizzlepop]

That’s idiot proofing. Never redline an engine with no load. It’s bad.

I figured the 3.5k was a safety limit, just didnt think they'd set a 7k redline but top out at 5.5k

 

[Dalingrin]

I think the tach is the same for both the 3.6 and the 2.0. 2.0 redlines at 5.5k.

 

[Fizzlepop]

I think the tach is the same for both the 3.6 and the 2.0. 2.0 redlines at 5.5k.

Got ya

 

[AnnDee4444]

The gauge clusters do have different redlines.

2.0 = 6,000 RPM

3.6 = 6,500 RPM

 

[Fizzlepop]

The gauge clusters do have different redlines.

2.0 = 6,000 RPM

3.6 = 6,500 RPM

Right, but where your 2.0 needle is is where it limits. Won't hit the 6k. I'm assuming because at 5.3-5.4ish the turbo is maxing out and cant produce the air required above that

 

[AnnDee4444]

Right, but where your 2.0 needle is is where it limits. Won't hit the 6k. I'm assuming because at 5.3-5.4ish the turbo is maxing out and cant produce the air required above that

My response wasn't about the motor's redline, it was about the 4th post that stated that the "tach is the same for both the 3.6 and the 2.0.".

The motor's redline is electronically limited to 5,800 RPM. All dyno charts I have seen show the 2.0 losing power around 5,600 RPM, which is probably due to the tune cutting fuel/ignition. Without knowing more about the motor, it's anyone's guess why the redline is where it is.

 

[DesertFox]

The 2.0 redline is well below the 6000 rpm shown on the JL tach, about 5600 in fact. The tach redline is puzzling, the same engine in the Cherokee has a different redline, see below.

FWIW, the completely different FCA 2.0 in the Alfa also has the same lower redline on the tach, see below.

 

[Fizzlepop]

Yeah the cherokee and alpha are definitely more accurate to where it caps. Good info

 

[AnnDee4444]

To add to the madness: https://www.alfaromeousa.com/conten...18_AR_Giulia_SPsiqa0qm0tiibbrvjv0p8fou9fu.pdf

From this document:

Redline on the Instrument Cluster 5,500 rpm
Max. Engine Speed 6,200 rpm​

 

[Fizzlepop]

Mine shows 6k, but never gets that far

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