Convert a 3.0 into a 3.2 liter questions

[Gunter]

Using the 98mm Max Moritz, or JE P/C, on a 3.0 liter SC engine, are the wrist pins reusable? Or do I need different ones? Other than new rings for the 98mm P/C, what else do I need to make this work?
When ordering 964 cams, or Webcams 20/21, what cam timing is to be expected with CIS? Is the cam timing provided by the supplier?

[emcon5]

I don't know about JE, but Mahle pistons come with wrist pins.

I timed my 964 cams per the factory 964 spec. I don't remember what it is off the top of my head, but it is probably in Wayne's book.

On a 80-82 small port SC, get your ports done, and use the early SC airbox/CIS runners. Your engine will run out of breath up top.

Tom

[Bill Verburg]

There are 3 different versions of the Mahle 98mm p/c
the 3 liter CIS version has a 22x61mm wristpin which is compatible w/ the SC con rods. These are slip fits but do need a slight chanfe on the heads cr 9.8

the 3liter MFI version has 22x58mm pins which are also compatible w/ stock SC rods, installaaton as above cr 9.8

the 98mm Motronic have a 23x58.5mm pin. installation as above cr unknown

wristpins are supplied w/ the kits usually, MAhle wil last longer than JEs,

cam specs are supplied by the manufacturer.

[KobaltBlau]

on the cams, get them from camgrinder on this board and he will help you out with things.

[MotoSook]

Andy have you bought from "camgrinder" I'm going to need some soon. E-mail me if you'd like. Thanks.

[emcon5]

Originally posted by Souk
Andy have you bought from "camgrinder" I'm going to need some soon. E-mail me if you'd like. Thanks.

"camgrinder" is John at Elgin Cams. They did my 964 grind, and are a first class operation and fairly priced.

http://www.elgincams.com/

Tom

[Carrera3.5L]

Originally posted by Bill Verburg
There are 3 different versions of the Mahle 98mm p/c
the 3 liter CIS version has a 22x61mm wristpin which is compatible w/ the SC con rods. These are slip fits but do need a slight chanfe on the heads cr 9.8

the 3liter MFI version has 22x58mm pins which are also compatible w/ stock SC rods, installaaton as above cr 9.8

the 98mm Motronic have a 23x58.5mm pin. installation as above cr unknown

wristpins are supplied w/ the kits usually, MAhle wil last longer than JEs,

CR for the 98mm Motronic is 9.8:1 also. Actually Bill, there is one more you may have overlooked. Mahle makes/made a 98mm MFI version with 23mm wrist pins as well. CR was supposed to be 10.3:1. Andial part number was AND 103 984 SP and I don't know if it is still offered or not.

Ralph

EDIT: I take that back, I know it was offered up until a year ago because my friend is using this set in his 3.4L twin-plug.

[Jeff Alton]

Souk, i have bought from camgrinder and highly recommend him.

Jeff

[MotoSook]

Thanks guys, I had no idea "camgrinder" was with Elgin...no need to say anymore

[Gunter]

So, if I go with Mahle 98mm P/C, is there a seal ring between Cylinder and head just like I have now with 95mm? There is also a thin copper seal on the bottom of the 95mm Mahle Cylinders to the engine case. What seals, top and bottom of the cylinders, is used with the 98mm?

[emcon5]

No sealing ring on top of 98mm cylinders. They use the same copper base gaskets as the 95mm jugs, as they are the same size externally,

Tom