Koru_Kinshi

It's *less* than it was before, and can be masked easily if you push the throttle between gear shifts, but it's still there and definitely noticeable. I shouldn't have to be dealing with this right?


Bolt was torqued to 90 ft lbs. All shims were used. No problem with the clutch engaging. Tune was re-done. So why am I still getting this damn hiccup when I switch from light to heavier throttle? Any help would be appreciated before I talk to EC again.

PACougar

Are you sure the hiccup isn't just the SC engagement when you go past the needed load to get it to engage(i.e. light throttle to heavier throttle)? Generally you're going to feel it "jerk" the car slightly when it engages, and adding the pulley will only make that more pronounced.

loungn14

berti_00

Disconect battery for 5-10min might fix it

shardul

iTrader: (1)

log your tps when you get the hiccup. you will see it opens fully to 99% and them slams shut.

Koru_Kinshi

Jerry recommended I pull the battery too. I'm going to give that a shot. Hopefully that solves it.

Zod

and is this normal?

overZealous1

same thing on my car. i have been watching load (throttle position) and when it hickupped i looked down quick and saw it at 75%. there has to be a way to tune this out.

Tech-Tune

I tried the battery disconnect last night but it did not resolve the issue.
I'm scheduled to dyno tune this Tuesday in hopes EC can make it smoother or hopefully eliminate it completely.
I'll share my results when we're done.

urbamworm

Sounds like a normal supercharger engagement type thing. Not sure how it is with a smaller supercharger pulley but I guess I could see someone who doesn't know any better thinking there was something wrong from the little jolt of engagement with a bigger crank pulley, perhaps it is the same with the supercharger pulley
.

E55Greasemonkey

The throttle body also closes partially/fully when shifting gears at certain loads/RPMs. That and the supercharger engagement, some of what you are feeling is normal operation.

Koru_Kinshi

Should I regap the pulley closer to spec? Seems unusually violent for normal engagement.

berti_00

my gap is about .9 i get the jerk every now and then but ive gotten used to it

overZealous1

it is not just a forward jerk on mine. it is a fall flat on it's face stumble, then a jerk forward. combined with the trans trying to shift up too quick, makes for a very jerky ride. it even does it while holding it in gear.

Koru_Kinshi

Mine only happens after I come to a full stop.

APBTdogman

My first fast car was a tri-power '65 GTO so the tip in/ jerkiness of the 55 is nostalgic to me.

That's why they call it "The Beast."

overZealous1

how to get rid of it?