Richmond 4.10 fail

[Apex Motorsports]

Originally Posted by Nickey Chicago

Another set of failed 4.10 Richmond gears.

At this point it seems that the gear sets are NOT faulty. More info soon.

Interested to hear what you have.

[LC]

[MrGazinya]

That's ugly

[hamidar05]

Maybe I can't see, but it looked like there were air bubbles in one of the broken teeth?

Somebody have some splainin to do!

[Apex Motorsports]

Originally Posted by hamidar05

Maybe I can't see, but it looked like there were air bubbles in one of the broken teeth?

Somebody have some splainin to do!

?

Originally Posted by Nickey Chicago

At this point it seems that the gear sets are NOT faulty.

[IROCanSS]

Originally Posted by Nickey Chicago

Another set of failed 4.10 Richmond gears.

At this point it seems that the gear sets are NOT faulty. More info soon.

Originally Posted by Apex Chase

Interested to hear what you have.

Me too...

[hamidar05]

Originally Posted by Apex Chase

?

5th picture down.. could be scoring, but looks like a slag bubble to me.. something that formed in the steel as it cooled.. not a metalurgist, but that is what it looks like to me.

[Scourage]

Originally Posted by Nickey Chicago

We have had two Richmond 4.10 gear failures, out of many installs.

We sent the gears back to Richmond for Rockwell hardness testing. We thought they might be to hard/ or brittle. Richmond said both gears were within specs.

Did they happen to give out the limits on the hardness specs?

[IROCanSS]

Originally Posted by hamidar05

5th picture down.. could be scoring, but looks like a slag bubble to me.. something that formed in the steel as it cooled.. not a metalurgist, but that is what it looks like to me.

I see it! Could be

[JANNETTYRACING]

Originally Posted by Nickey Chicago

Another set of failed 4.10 Richmond gears.

At this point it seems that the gear sets are NOT faulty. More info soon.

I see you have an early production housing with the Strap on the Left Cap.

This is too many failures for it NOT to be the Gear Sets.

Ted.

[IROCanSS]

Originally Posted by JANNETTYRACING

I see you have an early production housing with the Strap on the Left Cap.

This is too many failures for it NOT to be the Gear Sets.

Ted.

What do you mean? Early production like early VIN? Mine is fairly early, 32xxx. And I had a very early set of 4.10s fail.

[JANNETTYRACING]

Originally Posted by jrhaus76

What do you mean? Early production like early VIN? Mine is fairly early, 32xxx. And I had a very early set of 4.10s fail.

Yes Vin, I noticed this after doing several gear sets, that early production cars have a Strap on the Left main cap for support.

GM in they're infinite wisdom eliminated the strap in later production cars.

This lead me to look for stronger main caps and came up with Billet Caps that we machine to fit each housing we do.

The Teeth on the Richmonds are Shattering like Glass, they aren't bending or rolling over.

In my opinion they are Too Hard.
Ted.

[IROCanSS]

Originally Posted by JANNETTYRACING

Yes Vin, I noticed this after doing several gear sets, that early production cars have a Strap on the Left main cap for support.

GM in they're infinite wisdom eliminated the strap in later production cars.

This lead me to look for stronger main caps and came up with Billet Caps that we machine to fit each housing we do.

The Teeth on the Richmonds are Shattering like Glass, they aren't bending or rolling over.

In my opinion they are Too Hard.
Ted.

Well I will tell you what our inital thought was back in March when mine went that Richmond bebunked... That the low oil level (1.1 qt) was causing the gears to heat up. Since mine lasted nearly 1000 miles, we figured there were alot of overheat/cool cycles which would make the steel harder (more brittle) then one launch on a sticky track later... BAM.

When I sent mine back, Richmond supposedly tested them and said the gears were fine and fought me on the refund. They finally refunded my money only when I asked for my gear set back to have independently test. That was the only fishy part. Seems they didn't want me to get my gears back. I gave them the option, return gears that were rightfully mine OR refund me. They chose the later.

So what was the cut off VIN? What would my car have strap or no strap? I am 32xxx? I really want taller gears in my car but am scared of Richmonds. I looked into the LPE ones but they are even more pricey than Richmonds!

[JANNETTYRACING]

Originally Posted by jrhaus76

Well I will tell you what our inital thought was back in March when mine went that Richmond bebunked... That the low oil level (1.1 qt) was causing the gears to heat up. Since mine lasted nearly 1000 miles, we figured there were alot of overheat/cool cycles which would make the steel harder (more brittle) then one launch on a sticky track later... BAM.

When I sent mine back, Richmond supposedly tested them and said the gears were fine and fought me on the refund. They finally refunded my money only when I asked for my gear set back to have independently test. That was the only fishy part. Seems they didn't want me to get my gears back. I gave them the option, return gears that were rightfully mine OR refund me. They chose the later.

So what was the cut off VIN? What would my car have strap or no strap? I am 32xxx? I really want taller gears in my car but am scared of Richmonds. I looked into the LPE ones but they are even more pricey than Richmonds!

I have no Idea what the cutoff was in Vin numbers.

Ted.