Will this 915 work in my car?

[ryan911]

I could use some advice from some experienced Pelican members about this 915 that I am considering for my car, which is a '77 911S 2.7.

So far the seller has not told me the type of the tranny, but I'm pretty sure it's a 915/44. The seller says it was manufactured in Feb 1976 and that it is the original tranny from a 1977. He says it's mag case, electric speedo.

Here is a picture:


My trans is a 915/61, aluminum case I think (not sure about that though), and I have the clutch with the omega shaped helper spring.

Pictures of my 915:




As you can see in the second image, the studs at the bottom are longer to accommodate the clutch hardware, whereas the tranny for sale has shorter studs in that location. Also, there is an extra circle on the center section of the one for sale that mine doesn't have.

Despite this, the seller assures me that he "checked naround and there should be no problem putting this tranny in your car if it were a 73 and older there would be". I assume that means it will go in if I either modify the tranny for my clutch by replacing the studs and ????, or I could possible swap out the clutch cable? I don't want to do either of those things, but the seller didn't elaborate on what he meant, and I don't think I would believe him anyway, so your thoughts would be much appreciated.

Thanks,
Ryan

[sc_rufctr]

Ryan

The flanges in the top picture look very different to yours. They may still be OK but I suspect that trans is earlier than 1976.

What's wrong with yours? Why not rebuild it yourself with help from this forum.
There are guys here who can rebuild these in their sleep.

[ryan911]

Originally Posted by sc_rufctr

Ryan
What's wrong with yours? Why not rebuild it yourself with help from this forum.
There are guys here who can rebuild these in their sleep.

I probably will rebuild mine, from what I've read it doesn't look like it can be done properly for less than about $2k if I do it myself, and that doesn't include the hundreds of dollars worth of special tools I would have to buy. Also I have to tack on about 30% for shipping and sales tax to get parts from Pelican up to Canada.

I am pretty sure that the first gear synchro and possibly the second need to be replaced, but the tranny has more than 100,000 miles on it so I should probably be replacing some bearings, etc.

So spending around $1500 on a good functional low km used trans seems like an excellent way to get the car back on the road faster, and then I would still have a rebuildable trans that I can either rebuild or sell to recoup some of the cost.

My trans is most likely in better shape than I thought it was when I took it out, because when I was disconnecting the shift coupler I found that one of the bushings had disintegrated, so that would explain a lot of the shifting trouble I was experiencing. I think my next steps are to drain, check, and replace the gear oil, and if it looks reasonably good then I'll put the transaxle back in with a new shift coupler so that I can get a better idea of what kinda shape it's in, functionality-wise.

Ryan