Manual for trans rebuild?
 

Hi,

I just picked up a '78 SC Targa a couple days ago. Got a good deal but the syncros are shot on first and second so its seems that I need to do the trans.

I've read a few threads dealing with transmissions in this group but didn't find anything dealing with manuals, documentation etc. Can anyone point me at either some good online documentation or a manal that hopefully costs less than three figures?

Also, in general how difficult is it to get the engine and trans out and then to rebuild the trans? I've done some VW work but never a Porsche before.

Thanks,

Eric Marsh

Interesting how a HP junkie like yourself decided to go for an SC.

The manual by Bentley publishers is adequate for the job (under $80). In addition, pick up Wayne's 101 Projects for other things you will probably end up working on.

Read all the posts by Jim Sims, tbitz, and JanusCole. John Walker chimes in on many of these.

There is a tech article on this site that outlines a drop step by step. The novices (like myself) prefer to use a motorcycle jack for its width.

Good luck Eric.

Thanks! I will do all of the above.

As for an HP junkie buying an SC, I really buy/build different vehicles for different purposes.

The 'Busa is such a HP fix that nothing else even quailfies I'ts my street bike but I've gone 9.72 145 on motor and 9.53 152.5 on spray.

The Fiero is just a fun little hot rod that handles like a go cart but with about 450 hp/450 foot pounds of torque its got the the feel of a '60 muscle car. However I've got to solve some cooling problems on it and the trans needs replacing.

My goal with the Porsche is to have a nice daily driver with decent power, reasonable gas mileage, nice classic looks and good handling. I think it will also be a fun car to tinker with.

My biggest problem is that with these and other vehicles I'm running out of places to park everything. :(

Eric

http://homepage.mac.com/emarsh/.Pict..._repainted.jpg
http://homepage.mac.com/emarsh/.Pictures/new_wheels.JPG
http://homepage.mac.com/emarsh/.Pict...ngine_rear.jpg http://homepage.mac.com/emarsh/.Pictures/porsche2.jpg

whoa... those are some wild headers. got a sound clip to share?

what color is that SC?

Jiminy Christmas!! I thought those Hayabusas already went 200 mph without nitrous. Now THAT is the ultimate death machine. Fantastic, I love it.

SC looks like minerva blue?

lovely exhaust pasta.

Bentley is pretty good, it's what i am using to do my rebuild right now. But i also have the factory manual which is awesome for real technical things that the bentley misses. But the disassemble and reassemble should be fine with the bentley.

BTW- Is that the grim reaper that's standing behind the hayabusa with a big grin?

A '99 or 2k 'Busa in a good state of tune is good for about 194mph. Then they restricted them to 300kph. I'd guess that by dropping a tooth on the rear sprocket mine ought to be good for 200-205mph as is. At those speeds every mph takes a lot of power. The current limiting factor to the dry nitrous system is the amount that the injectors will flow.

As for the danger part, we all live with it. I've been racing bikes on and off since '73 so hopefully I've managed to get most of the stupid bravado stuff out of my system by now.

On the Fiero headers, I wanted a good street motor so I designed the 406 to make good power between about 2800 and 6000 rpm. The headers are a 180 degree design with ~41 inch pimaries. That tunes them on the third wave from about 3200 to 5800. What's killing me is trying to get the heat that they dissipate out of the engine compartment.

'Fraid I don't have any sound files. Guess I'll have to put that on my to do list.

As for the color, that's something I'll have to look into.

Eric

Try that exhaust wrap stuff. I use it on the cat back section of the exhaust on my 44 because it runs within 6inches of the cv axle and has a tendency of making the joints on that side wear faster than the other.The wrap is really made for headers, a 25 foot roll, if properly wraped should cover one header. So in your case you'll probably need two rolls.

I asked the Jet Hot people about it and they recommended against using the wrap on top of their coating. Evidently it retains too much heat and damages the pipes.

Agreed; since all you're doing, is replacing wear parts, about all you need for documentation is a picture an torque spec's.

BTW, I have an extra Bentley SC manual for sale ($65 in the classifieds )

I don't want to get your hopes up, but before you pull the engine to do the tranny, you should do the less expensive things. Replace all the shift linkage bushings and properly adjust the shift coupler. There is a tech article here:

http://www.pelicanparts.com/techarticles/911_shifting_improvements/911_shifting_improvements.htm

Making sure the clutch cable is properly adjusted would be a good idea as well.

You should also replace the tranny fluid with Swepco 201 (unless you know it was done recently).

Island's bentley manual is a good price.

Tom

I've told Island that I would buy his manual.

I'd initially figured that I would just step up and fix things but I think I will take your advice even if its just to buy time.

Eric