70-914-6 Clean Up, 3-11-25 Fan and bolts - closer look Options

[ctc911ctc]

Rory, I will crack the 914-6 case this weekend, pretty sure 2nd sync ring is gone or close to it…….i like your idea!

Your impression of the internals is good ?
put your 914 6 tailcover on it and install.
repair/rebuild the original at your leisure

[ClayPerrine]

Rory, I will crack the 914-6 case this weekend, pretty sure 2nd sync ring is gone or close to it…….i like your idea!

Your impression of the internals is good ?
put your 914 6 tailcover on it and install.
repair/rebuild the original at your leisure

I wouldn't do that. The gearing is different in an original six transmission.

The six has a GA second gear and a Z fifth gear. The 4 has an F second gear and a ZD fifth gear. The Z fifth in the six is to keep the fan spinning faster so it doesn't overheat.

I learned this the hard way. When I first had my 2.4 six in my conversion, I put an HB in for for fifth gear. I could not drive 60mph. I had to drive 50 in 4th or 75 in 5th. If I tired to run 60, the oil and heat temps skyrocketed.

[rgalla9146]

I have a rear shift 4 cyl. trans (with ZF ltd.slip !) in my 40 year owned 914 6
Yes, the ratios are different but as a temporary measure to keep the car on the road
or even just mobile, it can't be beat. My original trans is out for refresh.
Also, Boston temps vs. Texas

[ctc911ctc]

Clay,

Thanks for the note! I would not change the gears, just the teeth and the sync rings - though the plug-n-play idea from Rory is compelling!

Thank you fellow teeners

Rory, I will crack the 914-6 case this weekend, pretty sure 2nd sync ring is gone or close to it…….i like your idea!

Your impression of the internals is good ?
put your 914 6 tailcover on it and install.
repair/rebuild the original at your leisure

I wouldn't do that. The gearing is different in an original six transmission.

The six has a GA second gear and a Z fifth gear. The 4 has an F second gear and a ZD fifth gear. The Z fifth in the six is to keep the fan spinning faster so it doesn't overheat.

I learned this the hard way. When I first had my 2.4 six in my conversion, I put an HB in for for fifth gear. I could not drive 60mph. I had to drive 50 in 4th or 75 in 5th. If I tired to run 60, the oil and heat temps skyrocketed.

[ctc911ctc]

*********UPDATE***********

Drained all of the fluids - what a mess - I do not have the experience nor the equipment to understand all of the dynamics - but there is a great deal of oil in the system ! It just kept a comin'. Cleaned it all up - again - loosened the 3 bolts that hold the assembly in place and got the jack and the 911 jack plate that I purchased - DID NOT FIT, started a small thread on this topic - perhaps there is a magic adapter I can buy????

Will add picture once the engine is dropped!

(IMG:style_emoticons/default/red914.jpg)

[ctc911ctc]

******UPDATE*******

Dropped the engine, all the way down it listed to the PORT, I have the engine resting on the Jack with the Pelican Yellow Engine Lift bracket and 2x4s to stabilize, picks below.

Here are some questions for the Teeners

1. If I have the engine on the ground temporarily (I need to wait for the snow to stop to get the engine on the engine stand - small garage, long story) where should I have the engine contact the wood 2x4s? I am concerned that I should NOT rest the engine on the heads - in the picture there is very little weight on the 2x4s, they are stabilizing only.

2. I will be disconnecting the transmission - please note in the last picture the intermediate plate is cracked - suggestions as to this? How do these break, do I get the stronger one to replace it, etc.

3. Engine weight distribution - I was disturbed as it was coming down that it was leaning (listing) to the PORT side of the car, is the engine that much heavier on the left side?

4. Any other advice is always welcome - you may see a problem that I have not recognized, please chime in!

Thank ! YOU! (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif)





THESE ARE SUPPORTING THE ENGINES STABILITY - VERY LITTLE WEIGHT



Need to replace the transmission plate - this one may have been new?

[rgalla9146]

Cary
Those are not cracks. They are shadows from casting flash.
I used this assembly on a floor jack to remove /install engine and trans. with
HE's removed.
It was nearly balanced front/rear, left/right with the 4x4s extending forward and the
jack cup centered. The 4x4 are 10" A wood disc could be added to the bottom
of the 2x6" cross board to keep it centered.

[ctc911ctc]

Hey Rory,

Yes, I have the transmission apart and those “cracks” are indeed cast-flashing

Everything looks good on the inside, going to change 1st and second sync rings, perhaps 2nd/3rd slider and will take a look at dogteeth on 2nd

Chasing down the infamous 1st=>2nd grind

Will post update soon

Cary
Those are not cracks. They are shadows from casting flash.
I used this assembly on a floor jack to remove /install engine and trans. with
HE's removed.
It was nearly balanced front/rear, left/right with the 4x4s extending forward and the
jack cup centered. The 4x4 are 10" A wood disc could be added to the bottom
of the 2x6" cross board to keep it centered.

[HaraldD]

Hello,

if you want to look for cracks, you have to take a look at the top!
There are cracks at 911 or 914 transmissions...

Harald

[rgalla9146]

Hello,

if you want to look for cracks, you have to take a look at the top!
There are cracks at 911 or 914 transmissions...

Harald

Harald did you find a reason for this ? Pinion teeth failure ? too much horsepower ?

[ctc911ctc]

Two transmissions open, the core is as good as the one out of the 914-6,

Will be replacing Sync in 1&2 DogTeeth in 1&2 as well as the 1stgear/slider (money gear) for the 914-6 as to the core, will rebuild and have it as a spare

Should take care of the 1st to 2nd GRRRRRRRND sound......

[worn]

I learned this the hard way. When I first had my 2.4 six in my conversion, I put an HB in for for fifth gear. I could not drive 60mph. I had to drive 50 in 4th or 75 in 5th. If I tired to run 60, the oil and heat temps skyrocketed.

Oh, that’s the reason. I thought you were related to Sammy Hagar. I have a flipped HB in the fifth but also a taller 4th. Great for the highway.

[ctc911ctc]

******UPDATE******

DOG TEETH Removal Stalled another week - perhaps 2. (IMG:style_emoticons/default/mad.gif)

Transmission Inspection this week - all looked OK, need 2 Sync Bands, 2 DogTeeth and a slider.

I found this - looking for the tooth in the case - it was not in the magnetic drain plug, not even in tiny pieces.





My home brew Dog Teeth removal tool (Muffler Clamps) did not work so I bought a P225 from a very reputable vendor - actually the only vendor that had one in stock - I believe I received a P226, it does not fit and is designed for a heftier gear. (IMG:style_emoticons/default/mad.gif)

The gear sits too high, the notch does not mate to the ring in the tool



Bad close up of the same picture - the two do not mate.



I will move to getting the engine on the stand - doing the 2x4 shuffle to get it out of the engine bay and low enough to clear the rear of the car. Removing Carbs for servicing and CLEANING the engine bay......

[Superhawk996]

FWIW I have the same tool issue. Bought from someone used actually marked P225; represented as a P225; but it clearly isn’t. They are out there floating around.

Please share vendor so that others don’t run into the same issue.

[ctc911ctc]

Super Hawk,

Perhaps I am a bit naive, however, I believe that these are honest mistakes (perhaps not in your case) as a result of their being no MODEL STAMP on the tool, the 225 and the 226 are the same with a small (frustrating) variation

I have sent a note to Sir Tools with this suggestion....we shall see......

Depending on the response on Monday I will post more..,... (IMG:style_emoticons/default/dry.gif)

FWIW I have the same tool issue. Bought from someone used actually marked P225; represented as a P225; but it clearly isn’t. They are out there floating around.

Please share vendor so that others don’t run into the same issue.

[Superhawk996]

Super Hawk,

Perhaps I am a bit naive, however, I believe that these are honest mistakes (perhaps not in your case) as a result of their being no MODEL STAMP on the tool, the 225 and the 226 are the same with a small (frustrating) variation

I have sent a note to Sir Tools with this suggestion....we shall see......

Depending on the response on Monday I will post more..,... (IMG:style_emoticons/default/dry.gif)

Understood.

I’ll bet they will make it right. I don’t view the vendor sharing as a slam on them. Just a good heads up to others so they know the issue is occurring and to verify what they received right away vs putting it on a shelf and then falling outside a traditional return period.

In my case, I suspect it was a manufacturing error and whoever I bought it from sold it in good faith as I bought it as part of a bigger lot of trans tools.

Strange how P225 tools have been out of stock for years. Not sure what is going on there.

In my case, I’ll either modify the tool when I get my machine tools back up and running or I’ll save it for someday when I get a 915 transmission (IMG:style_emoticons/default/av-943.gif)

[ctc911ctc]

Agreed - my next target is an 84-86 911-SC, could use it then!

As Tom and Ray used to say, every job is an excuse to buy another tool!

CTC

Super Hawk,

Perhaps I am a bit naive, however, I believe that these are honest mistakes (perhaps not in your case) as a result of their being no MODEL STAMP on the tool, the 225 and the 226 are the same with a small (frustrating) variation

I have sent a note to Sir Tools with this suggestion....we shall see......

Depending on the response on Monday I will post more..,... (IMG:style_emoticons/default/dry.gif)

Understood.

I’ll bet they will make it right. I don’t view the vendor sharing as a slam on them. Just a good heads up to others so they know the issue is occurring and to verify what they received right away vs putting it on a shelf and then falling outside a traditional return period.

In my case, I suspect it was a manufacturing error and whoever I bought it from sold it in good faith as I bought it as part of a bigger lot of trans tools.

Strange how P225 tools have been out of stock for years. Not sure what is going on there.

In my case, I’ll either modify the tool when I get my machine tools back up and running or I’ll save it for someday when I get a 915 transmission (IMG:style_emoticons/default/av-943.gif)

[ctc911ctc]

Afternoon Update

Got the carbs off which allowed me to remove the engine from the underside of the car.



The Engine bay is full of oil residue, next on the list is a good scrub! (IMG:style_emoticons/default/biggrin.gif)



Lots of work to do here - needs new fuel lines, have the stainless ready to go, (IMG:style_emoticons/default/smash.gif)



Fly wheel is ground up (IMG:style_emoticons/default/sawzall-smiley.gif)



Starter gear is like new - perhaps it is a newer starter..... (IMG:style_emoticons/default/smile.gif)

[ctc911ctc]

**********Afternoon Work Continued***********

Got the Carbs off - they look great



Cleaning the "Flap Control Boxes" used a solution recommended within these pages, Nice Before and After!



May powder coat once cleaned............

[Superhawk996]

Is starter one of the gear reduction / Denso types? Some of those have been known to chew up ring gears like that.

So sad to see that type of crap.

Glad you’re going through it thoroughly. (IMG:style_emoticons/default/smilie_pokal.gif)