6 Speed manuals...
Logistics Pro
Joined: Aug 2005
Posts: 3,884
Likes: 180
From: Morgan Hill, CA
To revive the topic about stripped thread on the transmission case.
I tried to stop the drip on the weak 10mm housing bolt and the bolt come off without big resistance having lot of aluminum shavings on the end.
Does anyone has a long helicoils to repair such a thing? I could probably enlarge the hole to insert the helicoil, but the bolt is like 2" (50 mm) long and I haven't seen such a long helicoil taps. I can weld extension on standard tap, but don't even want to think about breaking it inside the hole.
Anybody knows a good and EASY fix?
I tried to stop the drip on the weak 10mm housing bolt and the bolt come off without big resistance having lot of aluminum shavings on the end.
Does anyone has a long helicoils to repair such a thing? I could probably enlarge the hole to insert the helicoil, but the bolt is like 2" (50 mm) long and I haven't seen such a long helicoil taps. I can weld extension on standard tap, but don't even want to think about breaking it inside the hole.
Anybody knows a good and EASY fix?
Also- WD40 is a very good lubricant for tapping aluminum. Is this a blind hole or does it go through to the inside somewhere? Typical taps shove the chips down the hole.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Hi Andy. I am in Orinda, so with the traffic we are not too close. The bolt is 10 mm, per the manual, but I never measured it. From what I see it is blind hole. I dealt with helicoil in deep aluminum hole in the past and it was a pain. Another issue is that original threads lengths are about 3 times the diameter, but steel helicoils should be stronger than aluminum thread. Ideally the transmission should be taken apart and than helicoil install, but I hate to make small fix such a big job.
Posting Guru
Joined: Jul 2007
Posts: 1,433
Likes: 2
From: Spring Lake
hey guys this may be the place to settle an age old dispute between some of my friends and i... the truck in question is an 00 7.3L diesel with the 6 speed, he claims you are only supposed to use the clutch to stop... I never owned one of these so I don't know if you're supposed to shift with clutching or not, but 120K later he still only uses the man pedal for stopping action. Is this supposed to be this way, or is his tranny just holding together on pure awesomeness thru that abuse?
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Changing the gears in manual without clutch is possible, but require lot of attention and practice. I had aux manual transmission on motorhome with automatic main transmission. Shifting up is easy, but downshifting gets pretty tricky.
So how your friend starts without using the clutch?
Years ago I had a car where hydraulic clutch mechanism leaked. I was turning engine off at red lights, engaging 1st to start using starter and once the car was moving I could shift up. Still lot of stress on vehicle.
So how your friend starts without using the clutch?
Years ago I had a car where hydraulic clutch mechanism leaked. I was turning engine off at red lights, engaging 1st to start using starter and once the car was moving I could shift up. Still lot of stress on vehicle.
Posting Guru
Joined: Jul 2007
Posts: 1,433
Likes: 2
From: Spring Lake
Changing the gears in manual without clutch is possible, but require lot of attention and practice. I had aux manual transmission on motorhome with automatic main transmission. Shifting up is easy, but downshifting gets pretty tricky.
So how your friend starts without using the clutch?
Years ago I had a car where hydraulic clutch mechanism leaked. I was turning engine off at red lights, engaging 1st to start using starter and once the car was moving I could shift up. Still lot of stress on vehicle.
So how your friend starts without using the clutch?
Years ago I had a car where hydraulic clutch mechanism leaked. I was turning engine off at red lights, engaging 1st to start using starter and once the car was moving I could shift up. Still lot of stress on vehicle.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
If the manufacturer installed the clutch -it is there to use it on every gear changes.
There are clutch-less manual systems that use centrifugal clutches or other gizmos, but IMHO there is good reason why they are not getting wide use.
Your friend 120k on the truck is nothing. My truck had double that.
There are clutch-less manual systems that use centrifugal clutches or other gizmos, but IMHO there is good reason why they are not getting wide use.
Your friend 120k on the truck is nothing. My truck had double that.
Posting Guru
Joined: Jul 2007
Posts: 1,433
Likes: 2
From: Spring Lake
If the manufacturer installed the clutch -it is there to use it on every gear changes.
There are clutch-less manual systems that use centrifugal clutches or other gizmos, but IMHO there is good reason why they are not getting wide use.
Your friend 120k on the truck is nothing. My truck had double that.
There are clutch-less manual systems that use centrifugal clutches or other gizmos, but IMHO there is good reason why they are not getting wide use.
Your friend 120k on the truck is nothing. My truck had double that.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Did you ride with him? Is he really that good that will change the gears without grinding?
Synchronizers are design to take the impact of few ounces of gear not 4 tons of truck.
Synchronizers are design to take the impact of few ounces of gear not 4 tons of truck.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Posting Guru
Joined: Jul 2007
Posts: 1,433
Likes: 2
From: Spring Lake
I've ridden along many of times, and never a noise other than the turbo spoolin...
Logistics Pro
Joined: Aug 2005
Posts: 3,884
Likes: 180
From: Morgan Hill, CA
Hi Andy. I am in Orinda, so with the traffic we are not too close. The bolt is 10 mm, per the manual, but I never measured it. From what I see it is blind hole. I dealt with helicoil in deep aluminum hole in the past and it was a pain. Another issue is that original threads lengths are about 3 times the diameter, but steel helicoils should be stronger than aluminum thread. Ideally the transmission should be taken apart and than helicoil install, but I hate to make small fix such a big job.
You can buy a "bottoming" STI tap that you technically should use a standard STI tap to start the threading then use the bottoming tap. It will send the chips up instad of down into the blind hole. Use tweezers and or compressed air to get the chips out when done tapping.
I personally use the clutch at all times. The thing about the syncros is yeah they're there and they do "syncronize" the speed of the gear to the output shaft, but with the clutch "in" the mass of the flywheel and clutch is all it has to syncronize. With the clutch "out" you add the mass of the rotating assembly to the workload of the syncros.
Cargo Master
Joined: Jun 2008
Posts: 2,752
Likes: 5
From: Stillwater, OK
Instead of using a Heli-coil, look into using a timesert. They are a better design of thread repair, and less prone to leaking.
As far as "granny" shifting, it won't present any problems unless you are bad at it. All it really does is force the user to match revs of the input shaft and the desired gear so they'll slip together. It has been done for years, even on unsynchronized transmissions. Unfortunately, the synchros will mask any error caused by the driver, and turn them into wear.
As far as "granny" shifting, it won't present any problems unless you are bad at it. All it really does is force the user to match revs of the input shaft and the desired gear so they'll slip together. It has been done for years, even on unsynchronized transmissions. Unfortunately, the synchros will mask any error caused by the driver, and turn them into wear.
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
1. pull the level to neutral and than observing the speed and rpm try to get gears running at the same speed for smooth engaging. NOT HUMANLY POSSIBLE at all gears IMHO
2 do a quick shifting where with upshifting and taking the gas pedal up-the rpm will drop close to the correct speed and the difference will be taken by flexibility of the drivetrain. It did work OK on my mentioned aux transmission, but than the main transmission had converter with big flexibility. The gears still engage with a "click" indicating some stress.
Will your friend transmission last till 200k I will admit he is good
Cargo Master
Joined: Jun 2008
Posts: 2,752
Likes: 5
From: Stillwater, OK
With electronic sensor technology, I've wished that they would put a second needle on the tach...
Your engine RPM (the big needle) shows the lay gear speed (input shaft is always connected to the lay gear), while a shorter (or thinner) set of needles could show your other gear speeds. It would make it one heck of a lot easier to learn how to rev match for a beginner. It is not very necessary unless you're towing, but being able to heel-toe a downshift to save your brakes is a necessary skill.
Your engine RPM (the big needle) shows the lay gear speed (input shaft is always connected to the lay gear), while a shorter (or thinner) set of needles could show your other gear speeds. It would make it one heck of a lot easier to learn how to rev match for a beginner. It is not very necessary unless you're towing, but being able to heel-toe a downshift to save your brakes is a necessary skill.
