we Just got the Sachs clutch for the 90 D250, Ordered it Wednesday from rockauto.com and it arrived yesterday (monday)-

Looks like the real deal, Interesting how it has Valeo numbers on it as well.

 

Crossy, I am just curious. I bought two of these last winter from a fleabay member that worked out to $400 shipped apiece. Were you in that ball park through Rock auto? Good score! I tried to order my front rotors through them but they were higher than my local Big A.

Also out of curiousity are the supplied PP bolts long enough in your set? I used one kit and the PP bolts were not long enough. I ended up using the factory bolts.

 

The bolts look plenty long from what I remember when i was doing the 93, haven't got the 90 truck apart yet.

It was a tad over 400 shipped.

 

Is it actually 13 " ? Did the flywheel come with it ?

 

Sach kits dont come with flywheels.

Crossy, I should have been more specific. The bolts were the same length as the oem bolts but they were not threaded the entire length. The last .25" or so isnt threaded.

 

They are truly a 13" clutch, not the BS one that the parts store fence saying they are an "upgrade".
A local clutch place told me that Valeo had worked with Sachs to produce these.
Keep in mind, Chrysler contracts with their vendors for a certain length of time to control the availability of parts for vehicles.
In order for a vendor to sell a certain part that is unique to Chrysler, either the contract agreement with the vendor and Chrysler must expire, or Chrysler agrees to an outside vendor taking the contract.
The latter, a mutual agreement to a secondary vendor, very seldom ever happens.

Mark.

 

yea the 2nd gen and 3rd gen 13" clutches dont' have as much clutch surface area like this one does.

The width measurement of the clutch facing is insane...

 

So what can this clutches handle for power etc?

 

Yes, it's 3" of clamping surface.
Don't let that fool you, the load it'll handle isn't that much higher, it just makes it a smoother, more controllable clutch and increases longevity.

Keep in mind though, the Sachs disc is a HEAVY beast, it was ONE of the predominant causes of pilot bearing failure on these trucks.

Mark.

 

The sachs is supposedly able to hold 350hp but mine slips in 5th and 4th unless i shift it really really slow...and the PO put it in like 45,000 miles ago.......

It only has a 2800# load pressure plate, compared to a 3rd gen 3200#...which is why the stock 3rd gen clutch in the 93 is still holding amazingly well and still engages off the floor. That has a 6 speed flywheel in it

 

Nice buy, Crossy's Son.

I see you took your own advice from here:

https://www.dieseltruckresource.com/...h-t283496.html

I have a spare Sachs like yours with Valeo marked pressure plate as well collecting dust in my garage. They do last forever if the motor is in a near stock setting so I don't imagine I will need it any time soon.

It was interesting to inspect the Stock original clutch that was in my 1993 that had 50K miles. The only differences I could see is that there was a Sachs "S" cast into the cover but overall it was exactly the same.

The pilot bearing failing... Mark Nixon - that was the first time I have ever heard that the extra weight in this cast iron clutch is actually a contributor to the pilot bushing failing.. interesting theory. I can see that. More reason to upgrade to the ball bearing input shaft bearing... All of my trucks received that mod and I've never had an issue.

Good to see these clutches are still available. There was a scare years ago that the last "batch" of 400 or so units was being surplussed and after they were gone ,,, they were gone for good. It appears that the supply has not been affected to date!

 

There's slightly more to in than JUST the weight of the clutch.
How many of the guys who replace the bronze pilot bushing actually soak the bushing in oil?
According to Mysteryman, an engineer for Dodge prior to, and during the 1stgen era, there was also a problem with the bell housing alignment.
I've never tried to dial in a bellhousing centerline, so I'd hardly know the 1st step to checking it out.

Mark.

 

Bottom of the page:

http://www.fordracingparts.com/faq/faq.asp

 

Yea we are going to get the needle bearing to put in the flywheel, like we did in the 93 except that flywheel already came stock with one.

the goal with the 90 is to keep it as original as possible, as it has 35,000 original well documented true miles on it....Plan is to drive it at stock settings and periodically fix up the body, Then when its all repainted and on factory hub caps, we are going to sell it on ebay to fund the other 1st gen projects

 

hey-Hey!!!,
I think the 05-101 Luk for the early HO motors is at least the equal of that clutch. Needs a different flywheel, and is only for 1-3/8" input shafts. With an NV5600 I already have that...

On the lining width, this not make it hold more; it is like the stiffness contribution of a pipe wall thickness. Once you've got adequate wall thickness all you get by making it thicker is adding more weight. The primary contribution is from the diameter. On smoothness of engagement, the major contribution to that effect is the marcell-ing springs; how 'long' are they( axial compressability ), and how stiff are they?

Not bashing the Sachs, and if I could fit one I'd probably run that.
cheers,
Douglas