Clutching help

Marlon · Feb 13, 2017

I have a 2014 M8 162. A stock sled aside from a mbrp can. I wanted to lower my Engagement into the mid to high 3000's
A mechanic set me up with a black/silver (110-290) primary spring. I pulled the stock yellow/white(122-285) it was engaging 4400 ish. I was surprised when the black/silver only dropped engagement to 4200. Primary is clean 68gm weights are good , everything slides good. Can anyone make suggestion as to why it isn't engaging at the 3500-3700rpm as indicated by others using the same setup?
Thanks in advance for any suggestions.

Marlon · Feb 13, 2017

I have a 2014 M8 162. A stock sled aside from a mbrp can. I wanted to lower my Engagement into the mid to high 3000's
A mechanic set me up with a black/silver (110-290) primary spring. I pulled the stock yellow/white(122-285) it was engaging 4400 ish. I was surprised when the black/silver only dropped engagement to 4200. Primary is clean 68gm weights are good , everything slides good. Can anyone make suggestion as to why it isn't engaging at the 3500-3700rpm as indicated by others using the same setup?
Thanks in advance for any suggestions.

Anylizer · Feb 13, 2017

if your deflection is not set properly... it can effect engagement.

Marlon · Feb 14, 2017

Checked deflection and it's good. Belt is ridong nice in the secondary I switched back to yellow white spring .. engages around 4400 ish . I switched back again to the black/silver and engaging at 4200rpm. While I had the spring out in checked the primary again for any issues and everything appears sound straight smooth and tight. I guess I'll try a different spring weight to see what results I get from that. The yellow/white seems to be engaging at the rpm one would expect it to.
Any other ideas or suggestions are greatly appreciated.

Vern · Feb 16, 2017

Weird, I'm using the same spring (black silver 110/290) with stock 68g weights and mine engages smooth as butter at about 3500rpm. Don't know if it would cause that much difference, but are your weight pins tightened all the way down squeezing the o rings into the sheave? I loosen mine up until the weight swings freely but has no side to side play.

Frostbite · Feb 16, 2017

The bolts on your clutch weights may be to tight. The weights should pivot freely. If they are tight, it takes a lot of centrifugal force to get them to move.

Readymedic · Feb 17, 2017

Check out Thunder Products Go-Rings. They take the place of the O-rings on the weight pivot bolts. Silky smooth engagement, and no more binding.
I put them in 2 weeks ago. They are awesome..

Frostbite · Feb 17, 2017

Readymedic is right about the Go rings. I would struggle to get my clutch weight O rings just right, not to tight, not too lose. With the Go Rings, they are round on one side and flat on the other so they fit the recesses on the Cat primary just right and allow your clutch weights to swing freely, and best of all, they are cheap.

line8 · Feb 17, 2017

I just had this similar problem. Only difference was when mine engaged, it really hit. I had a binding spring and a sticky roller. But there was a suggestion on here to look into thunder products-911 cover, glide washers and the go rings. I put all of them on and the results are great. Engages at right around 3900, 4000, 4100 and is extremely smooth. No more snap just great smooth down low power

Sent from my iPad using Tapatalk

GBrown · Feb 17, 2017

Another recommendation for the GO-Rings, also the Thunder Products ABC clutch bolt is great for helping with this problem as well. I have the Speedwerx H5 125-340 primary spring and stock weights and engagement is very smooth after installing those two products.

officer farva · Feb 20, 2017

GBrown said:
Another recommendation for the GO-Rings, also the Thunder Products ABC clutch bolt is great for helping with this problem as well. I have the Speedwerx H5 125-340 primary spring and stock weights and engagement is very smooth after installing those two products.

What color is the 125-340 spring you're running? Also is your sled stock ?

GBrown · Feb 20, 2017

officer farva said:
What color is the 125-340 spring you're running? Also is your sled stock ?

It is the speedwerx white spring.

Only changes to the motor are a can and BDX intake so it's essentially stock.

Marlon · Feb 26, 2017

I made sure everything is good went riding this weekend up the coquihalla . Seemed to engage around 37-39 but the odd time I would notice it engaging around 4100 ish . Wasn't hitting hard or anything. On a side note, I managed to somehow break my lower steering post mount point just below where the tie rods connect ( aluminum bracket) looks like possible stress Crack that decided to let go at the very end of the day . so I have bigger issues now. I have to get the front end ripped apart and it doesn't look fun
Wish me luck .

Vern · Feb 26, 2017

That's a common issue, cat sells an updated bracket for like $25. The bracket was cheap enough I have one sitting on my shelf waiting for when I need it or summer to come, whichever comes first.

Also supposedly you can replace the bracket through the tierod whole behind the rubber boot on the right side without tearing the whole front end apart.

GBrown · Feb 26, 2017

Vern said:
Also supposedly you can replace the bracket through the tierod whole behind the rubber boot on the right side without tearing the whole front end apart.

Yes, you can change out the bracket parts by just removing the boot on the right side. No need tear the whole front end apart.

Marlon · Feb 27, 2017

After digging in and doing some flashlight/ camera exploration I figured out how to remove the brackets. And then found a tonne of info on how it's a weak point on the 12-14 models. Once I discovered the threads it all became easier . Thanks for the info . Ordered parts Sunday from country cat and they shipped today That's service!

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Clutching help

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