I pulled the engine in my '26 Tudor to change the clutches. (I never attempted t0 pull an engine before) The clutch slipped since I bought it. The clutches were Watts or Jack Rabbit, and most of the linings were worn off.
During reassembly, 2 of the transmission driving plate screws stripped (special ones for 26-27). The threads look fine, so the drive plate must have stripped.
Anyone have suggestions on what to do now?
I have repaired ones with the burned up after market disc, the problem I found was the three finger ring inside slipped past the holes, then there was no high gear. Repaired it by adding another disc to get the distance needed.
That's the problem with the Turbo / Watts / Jacked up clutches. They burn out, then you have to pull the engine to fix it.
Best thing you will ever do is install original Ford style clutch discs. They offer a perfect neutral, and are very forgiving of novice drivers and mis - adjustment. They offer more positive engagement with twice the surface area of the lined clutches.
If you mean the 6 bolts stripped, the bolts can be replaced easily but if it is the threads that these 6 bolts go into, you will need to replace the brake drum. The drive plate itself is not threaded.
Royce, I have to disagree with you . I have less slippage with the loads I pull and turbo 400 that Langs sell. Stock clutches are good but I always seemed to have to down throttle to get them to hold.
It is the brake drum that has 2 stripped holes.
Is there an alternative to replacing the brake drum?
What about a Helicoil?
P.S. I took everyone's advice on the forum and used original Ford style clutch discs.
Well, almost everyone's advice.
Sorry Dean. I don't know anything about the turbo 400.
Dwight Most people Do not pull the loads I do. Stock clutches will serve You just Fine. Fore My driving Turbo 400 are my choice.
Heli-coils might work but you will find that you have very little stock around those holes to allow for the larger holes needed for the insert. If things get too thin you'll only have it break again.
The brake drums are cast iron and the material around the bolt holes is marginally thin to begin with. They do tend to break around the holes. Drilling out to add a Heli-coil may work for a while, or not. It likely would not be reliable in the long term. I use Heli-coils fairly often, but here I would try to get a better drum. Check with Dave Huson.
Drive carefully, and enjoy, W2
Just fitted an turbo 400 on it's 3rd engine, maybe this one will wear it out!!
I think these are 3/8-24 thread. You would have to drill 25/64 diameter and tap for the helicoil. Look at your brake drum and scratch your head a bit and you will know if the helicoil is a good idea.
There may be a slightly larger millimeter thread that you can use with new bolts - if the material around the bolt holes isn't cracked.
If the thread is 3/8", it's 9.5mm - maybe a M10 tap would give it enough strength? Regular 1.5 mm pitch is close to 16 tpi and fine thread 1 mm pitch is close to 24 tpi.
I had one come out in spite of the safety wire. The area around the hole in the drum was cracked. That bolt ruined the starter ring, and the magneto then landed on top of the strainer. I had to pull everything out to fix it. I bought a rebuilt engine and transmission at the swap meet. Bought it from our late member Lee Pierce. Lee's engine is still in the car 22 years later. I still have the old one but never rebuilt it.
Replace the brake drum either with a good used one or buy a new one.
I also use the standard Ford disks in all my T's
If you use the standad (original) disk this is what your brake drum LUGS WILL LOOK LIKE!!!
Check with RV Anerson about a Watts clutch (much better) will give you better neutral and not scar your brake drum.
If you use the standard (original) disk this is what your brake drum LUGS WILL LOOK LIKE!!!
Check with RV Anderson about a Watts clutch (much better) will give you better neutral and not scar your brake drum.
Dwight: I have taken some brake drums out that were damaged so bad that over half the center of the lug was entirely gone. Believe it or not you could turn the center steel disks in a circle. I guess I should be happy when guys like to use the steel disks because it helps me sell a lot of brake drums.