Voith

Anybody know what should side clearance (rod to crank) on 944 engines be? I have ~0.20mm and don't find this information anywhere.

I did find information that crank pin width is 29.13mm and rod width is 29.00mm, so that means clearance should be 0.13?

EDIT: found it in workshop manual, Is this the correct value?

951and944S

Well, the rods are 29.0.

What rods....?

Pauter Rods recommends .010-.012" with minimum of .08".

That converts to .25-.30mm, .20mm minimum.

http://pauter.com/parts/technical/faq/rods/

T

Voith

Rods are these http://www.droste-ing.de

I can squeeze 0.25mm in but its very tight.. So this should be about right.

Another thing, when I plastigage rod bearings, I have to tap rod bolts quite a bit to get the cap off, is there a way to get them off without tapping since I think i squash plastigage more with tapping..

kev951

turbo needs 0.005 thousandths side clearance each side minimum.. which is 0.010" thousandths total per rod

951and944S

Same link - Porsche/VW bolt layout: Unscrew the bolts about a quarter of an inch. Then, while holding the beam, tap lightly on the screw heads with a non-marring hammer until the alignment sleeve is clear of opposite face.

There's no reason your plastigauge has to be on the cap side, especially if you are checking with the crank and rods out of the block.

T

951and944S

You're using those hollowed out, triangulated beam rods are or those on the site experimental....?

What's the weight per rod...?

T

gruhsy

The manual on that pic says 0.100mm to 0.400mm.

Is the manual saying per side or total per rod?

Voith

No I got classic H beam like these http://www.droste-ing.de/galerie.php , weight per rod is 601.5 grams and are all balanced to 0.3g. Stock turbo rods without bolts are ~740g.



Triangular designed rods are patented and when I got mine I think they only made those for bikes.


I have already glued griddle together so now I have to measure it inside of block.

Voith

I think it is per rod.. Kind of tight I've put together few engines with much larger tolerance there.