9" Case Fitment

[GrnDragon]

I have had fitment issues with 2 different fabricated 9" housings and my aluminum strange case. Has anyone else had this problem before, or does anyone know how much elongation of the case holes would be acceptable before it would cause axle alignment issues?

[Blake Foster]

I normally use a LARGE soft Face hammer!!!

[GrnDragon]

Originally Posted by killer69

I normally use a LARGE soft Face hammer!!!

That will do the job, but I hate forcing stuff together. I am a Mechanical Engineer for the Navy and one of my areas of expertise is design/drawings and GD&T (geometric design and tolerancing) which basically controls fitment of parts and allowable tolerances between the parts. I have been searching for the bolt circle of a 9" everywhere to figure out which of the parts is off and by how much, but for some reason that information is Top Secret. Strange and Currie would not give me the numbers. This stuff should fit together MUCH better than it does, all of these parts "should" be CNC machined so hitting allowable tolerances should be done 100percent of the time.

But I do feel a little comfort knowing someone with your experience has to use the ol rubber hammer!

[Blake Foster]

I agree 100% they should fit better. but they don't theats why the big hammer lol

[Bryce]

I have not had that issue, as a fellow engineer I hate forcing things that should not be forced.

Are all the studs on the housing straight?

[GregWeld]

They all need to be tapped home with a little use of force.... Use a dead blow hammer it will go right home...

[Vegas69]

This is where your engineering mind can hurt you. It happens to me all the time. Most guys would just bang it together an never have a problem. We think of every worst case scenario known to man.

This isn't the Navy and 90% of my car required clearancing this, tweaking that, etc.... The real defiinition of pro touring should be the mesh of a pile of bastard parts. If you can nudge it on, you don't have a problem, yet.

[Tweaked Zed]

If almost everything you do falls together even half the time, I'm selling everything I own and come work for you for free. I have three different size dead-blows I sleep with at night......... wait......... nevermind. I think that came out wrong.

[intocarss]

Hot rod parts go right together??

My buddy is an engineer and races a dirt track car... You want to see a man go crazy working on something LOL

Here is his one of his comments when I tell him to use the "persuader"

"It's piss-poor car engineering that causes car guys to use big-ol-****ing-hammers. If you let areospace engineers design a car, they'd fit together as designed but cost as much as a space shuttle".

[Track Junky]

Coming from a construction back ground I have used my framing hammer and my single jack many many times. And I dont leave to a track event without them.