Bucking after new clutch install - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jeepmor · 12-06-2022, 07:18 PM

Quote:

Originally Posted by Ultramaroon

I think it'd have to be pretty bad. I'm skeptical too. They switched to a forged design but I don't see any finish machining in the pics.

There are no finishing/machine marks, zero, it was 100% cast. You can now see wear on the ball pivots and where the fork touches the TOB. And again, mine exhibited the problem from day one.

Ultramaroon · 12-06-2022, 07:23 PM

Quote:

Originally Posted by jeepmor

There are no finishing/machine marks, zero, it was 100% cast. You can now see wear on the ball pivots and where the fork touches the TOB. And again, mine exhibited the problem from day one.

Do you still have the fork? I'd like to examine it if you are game.

NoHaveMSG · 12-06-2022, 07:55 PM

Quote:

Originally Posted by jeepmor

There are no finishing/machine marks, zero, it was 100% cast. You can now see wear on the ball pivots and where the fork touches the TOB. And again, mine exhibited the problem from day one.

It's forged 100%, not cast. I have one sitting on my desk waiting for install. You can't just base it solely off the surface finish at first glance. Looking at it you can see the parting line from the die and you can see the draft for the dies in the edges. Cast parts usually come out cleaner to be honest. Ever see a forged rod that doesn't have surface finish machining? This is an eagle forged rod for a SBC.

jeepmor · 12-06-2022, 09:59 PM

Forged, okay I see it now. How do I share pics? It does have two holes and some pockets milled at fork end for clip retention. The pivot clip is milled open. I do see what looks like a mold part line, or rather a forge line like a high pressure stamping.

The interesting bit is the wear, the pivot pocket has significant wear you can feel with your fingernail like a button from the drilled open top of the pivot ball. I'd guess 10-20 thousandths of an inch.

NoHaveMSG · 12-06-2022, 10:16 PM

Like this ? This is a used fork I picked up.

NoHaveMSG · 12-06-2022, 10:24 PM

For shits n giggles I ran back and threw it in my hardness tester. Granted I didn't sand in a smooth spot and level it but it's pretty hard. I would say it's in the range of 34-38 hrc. A decent high carbon knife or a truck leaf spring is about 42 hrc for reference. I would shoot Verus a message. They are pretty responsive and care about the product they put out.

Ultramaroon · 12-06-2022, 10:29 PM

Quote:

Originally Posted by NoHaveMSG

Like this ? This is a used fork I picked up.

are the fork tines symmetrical about the center plane?

NoHaveMSG · 12-06-2022, 10:41 PM

Quote:

Originally Posted by Ultramaroon

are the fork tines symmetrical about the center plane?

In my 4 handed attempt at taking a picture of it, it's close but it looks like it's off a smidge. Hard to tell without another set of hands. Could have it off the peak a bit on one side. I didn't check the lengths.

Sapphireho · 12-06-2022, 10:46 PM

Quote:

Originally Posted by NoHaveMSG

In my 4 handed attempt at taking a picture of it, it's close but it looks like it's off a smidge. Hard to tell without another set of hands. Could have it off the peak a bit on one side. I didn't check the lengths.

Use the right measure.

Ultramaroon · 12-06-2022, 11:09 PM

Quote:

Originally Posted by NoHaveMSG

In my 4 handed attempt at taking a picture of it, it's close but it looks like it's off a smidge. Hard to tell without another set of hands. Could have it off the peak a bit on one side. I didn't check the lengths.

It's ok. I would set up a jig with a camera and plug that into inkscape.

Ultramaroon · 12-06-2022, 11:10 PM

Quote:

Originally Posted by Sapphireho

Use the right measure.

Right?! JFC, what a cruel joke!

NoHaveMSG · 12-06-2022, 11:17 PM

Quote:

Originally Posted by Ultramaroon

It's ok. I would set up a jig with a camera and plug that into inkscape.

Would be nice if I could just scan it and port it into solid works. Even nicer if I could scan the stock one too and have SW merge the two and match points.....but I sold my scanner.

Ultramaroon · 12-06-2022, 11:26 PM

Quote:

Originally Posted by NoHaveMSG

Would be nice if I could just scan it and port it into solid works. Even nicer if I could scan the stock one too and have SW merge the two and match points.....but I sold my scanner.

I killed my scanner by leaving it on a shelf for too long.

NoHaveMSG · 12-06-2022, 11:28 PM

Quote:

Originally Posted by Ultramaroon

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12-06-2022, 09:59 PM	#32
jeepmor Senior Member Join Date: Apr 2014 Drives: 84 CJ7, 08 Duramax, 2014 FRS Location: Oregon Posts: 478 Thanks: 338 Thanked 128 Times in 103 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Forged, okay I see it now. How do I share pics? It does have two holes and some pockets milled at fork end for clip retention. The pivot clip is milled open. I do see what looks like a mold part line, or rather a forge line like a high pressure stamping. The interesting bit is the wear, the pivot pocket has significant wear you can feel with your fingernail like a button from the drilled open top of the pivot ball. I'd guess 10-20 thousandths of an inch.

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