c5mtl

Can't believe I swapped out my ysi that gave me years of trouble free fun for this f1x....at low rpm sounds like a random hammer is hitting it and the belt jumps up Anybody ever run into this issue? So disapointed!!! No passes at the track....maybe 250 street miles ,no highway pulls ,nothing at all....I even decided to stay conservative with the pulley combo cause I was horrified overspining it.
8 inch crank and 4.25 blower pulley is not even max impeller speed at 6500rpm. It's still under warranty but what a pain losing the car for 3 weeks plus all the shipping from Canada.
UNREAL!!!

BLOWNBLUEZ06@RKT Performance

If the belt is jumping as you're hearing the noise, that's not sounding good. I would avoid running it any more and get it back to PC. There's not much inside these centrifugals, gears and bearings. Sounds like its skipping a tooth inside, but it's not something I've ever seen or heard of before.

c5mtl

thx ....when i wind it by hand and listen the the gears the sound fine...what i do find is a little to much play in the gear

realcanuk

Dam buddy. That sucks. I guess someone with an F1x could confirm but that play doesn't seem right.

helga203

Those units are a hit or miss. Gusee u got the miss. That sux. Did u feel a difference in the performance??

BLOWNBLUEZ06

That doesn't look like too much play to me in your video. Not saying there's nothing wrong, but that's not jumping out at me.

c5mtl

No but the knocking at idle scares the crap out of me

helga203

I just check my procharger and it doesn't make any noise moving it back and forth.

Milan

go read on yellow bullet about how much they love the f1x and it's reliability

FMX05

My D1SC had similar play in it and was very noisy at idle. It had 20k miles on it when I bought the car and another thousand or so miles into driving it the entire gear drive failed. PC said nothing was salvageable, not even the case. The new one has zero play in it.

c5mtl

After a long talk with a tech at pc he suggested I Drain oil and look for debris in oil.....did that and oil is fairly clean besides a bit of fine breaking metal(that's what they said) bearings sound ok from spinning by hand next they want me to reinstall and take video of the noise and go from there

robert miller

I loved mine when I had it in the c5 but also it didn't make any noise on moving it around like you are saying. But for sure you could tell you had a blower on the car when it was running.

I put a little over 5,k on it before pulling it all down never a moment of problems.