993 tools

[rick conrath]

Any sources for 993 engine tools out there? (The dealer doesn't count) Very frustrating trying to take apart a long block without the correct tools, knowing that you will only use it a time or two.
Rick
'78 930

[john_colasante]

What part are you stuck at where you feel you need a special tool? You need the cam sprocket holder wrench.

[rick conrath]

That's the primary tool I am looking for. They also have a tool for the left and right camshaft, to index them prior to tightening the camshaft bolts for timing.
Rick
'78 930

[john_colasante]

Pelican carries it.

http://www.pelicanparts.com/catalog/shopcart/PORS/POR_PORS_PTOOLS_pg3.htm#item14

[john_colasante]

Originally posted by rick conrath
They also have a tool for the left and right camshaft, to index them prior to tightening the camshaft bolts for timing.

As far as that goes, I think most people do not use that method using the fixture. Instead, use the method that uses the dial indicator to setup timing on the 993.

[john_colasante]

I just remembered there is a difference with the 993 cam sprockets. Maybe you can't do it with the tools I mentioned above. Maybe someone else can help here.

[ChrisBennet]

I think you're right John about the 993 not being able to use that (9191) tool. You can backdate the 993 sprockets to the earlier kind and use it though. I think the 993 sprockets are only held on by "the miracle of friction". Might be a good idea to backdate anyway.
-Chris

[rcwaldo]

The 993 cam sprockets are indeed friction fixed, no key or dowell to locate its timing..FWIW

[rick conrath]

Any sources for the sprocket wrench?
Rick
'78 930

[ChrisBennet]

Originally posted by rick conrath
Any sources for the sprocket wrench?
Rick
'78 930

If this is for your '78 930 you may need a different wrench. The sprocket wrench pictured is the for the later cams. All the Carrera's had them and maybe the the later SC's. A '78 car with the stock cams would use a cam holding tool and the big crows foot.
Pelican should have all of them.
-Chris

[rick conrath]

I am converting a 993 motor to twin turbo and installing it in my 78 930....that is if I don't blow my budget on specialty tools. Any sources for the 993 sprocket wrench?
thanks
Rick
'78 930

[ChrisBennet]

Originally posted by rick conrath
I am converting a 993 motor to twin turbo and installing it in my 78 930....that is if I don't blow my budget on specialty tools. Any sources for the 993 sprocket wrench?
thanks
Rick
'78 930

I'm not sure there is a "sprocket wrench" for the 993. I think it has some gizmo that holds the cams in place from the flywheel end while you tighten the cam bolts.
-Chris

[Bill Verburg]

These are the 993 cam tools


and specs


They are held in place only by friction and they have been known to slip

I backdated mine to 964 drives, which means the older tools can be used. The hyd. lifters further complicate the issue. One way around it is to temporarily replace #1 hyd. int. w/ a mechanical version(easily done on a 993) and use the older dial indicator method.

[rick conrath]

It's that pesky tool #6 . I have thought about loading the longblock onto my pickup and going to the dealer to ask him to loosen the sprockets. Unfortunately they would probably hit me up for a shop fee close the cost of the pulley wrench....maybe not.
Everybody , thanks for the advice, but I may have to spring for the tool just to get things apart. Who has the best prices? I will also look into the backdating. Wonder why they changed?
Rick
'78 930

[ChrisBennet]

Originally posted by rick conrath
It's that pesky tool #6 . I have thought about loading the longblock onto my pickup and going to the dealer to ask him to loosen the sprockets. Unfortunately they would probably hit me up for a shop fee close the cost of the pulley wrench....maybe not.
Everybody , thanks for the advice, but I may have to spring for the tool just to get things apart. Who has the best prices? I will also look into the backdating. Wonder why they changed?
Rick
'78 930

Just zip out the bolts with an impact wrench. Then backdate your sprockets and set your timing exactly the way you like it. You'll still need to buy the 9191 sprocket tool. Kinda expensive but you can use it as a club for home defense in a pinch.
-Chris

[rick conrath]

Well for grins I priced the tools through a parts house. Can you say $1,200.....I might as well drop the longblock off at the dealer and let them take it apart . Your right Chris, nice club but mighty expensive. Cheap alternatives????????
Rick
'78 930

[ChrisBennet]

Originally posted by rick conrath
Well for grins I priced the tools through a parts house. Can you say $1,200.....I might as well drop the longblock off at the dealer and let them take it apart . Your right Chris, nice club but mighty expensive. Cheap alternatives????????
Rick
'78 930

Back date baby, back date. Then you can use the $72 cam tool.
-Chris

[rick conrath]

What do I have to change on my 993 to backdate?
Rick
'78 930

[john_colasante]

You have to update the chain sprockets on each camshaft to the 964 style. It's probably a little more than just the sproket, there are some other little parts in there. And as Bill said you need to also get at least one mechanical rocker arm w/ adjuster.

[rick conrath]

I am a little confused here. When I check the part numbers and illustrations in my PET, the 964 and 993 share the same sprocket numbers,wwodruff key as well as dowel pins at least up until '95. Chain wheel # 901 105 546 02 appears to be used well back into the' 80's. So if I am backdating to 964, what year is the benchmark? My '97 sprocket assembly also shows dowel pins and the basic hardware setup as the earlier '89 c2. I can see no difference between the 993 and c2 other than the tensioner setup and hydraulic rocker arms. What benefit is there for me to backdate to 964 style?
Rick
'78 930