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Its likely, Cosworth would refer all torque specs per the manufacturer
This was taken from the manual. 18ft lbs. Not sure what you meant by CR? Please double check this info
Thank you Minus Previous!
CR: Connecting Rod.
I wrote Cosworth and they do not supply any value, unbelievable!.. I guess manufacturer settings is a good start.
Cheers!
Thank you Minus Previous!
CR: Connecting Rod.
I wrote Cosworth and they do not supply any value, unbelievable!.. I guess manufacturer settings is a good start.
Cheers!
Yes, Connecting rod. Here it is if needed. Taken from EvO 9 manual
Do not use the OEM connecting rod bolt torque spec on your cosworth rods. It will not work.
Also, if you bought main studs, do not use the torque specs for the OEM bolts.
The OEM bolts are torque to yield bolts. Hence the torque spec is XXft-lbs then an additional 90*. The manufacturer has to do a good amount of testing (with the bolt and the assembly) to come with a torque spec like that.
I find it quite deplorable that cosworth doesn't have torque specs for their parts. Do the heads of the rod bolts have markings on them?
Does anyone know if there is a torque spec for the oil passage plug on the back of the cylinder head just above the EGR port? Please see pic below for reference. I've skimmed the service manual, and tried a few searches here, but haven't had any luck finding the specifics on this little guy.
It's pipe thread. Put thread sealant on it, and snug it up. It's not going to go anywhere, the threads are tapered, it basically wedges itself in place.
Difference in torque specs in the repair manual. I circled the fasteners in question.
The m8 manifold bolts are 22+-2 ft/lb on one, 24+-4 on other. M10 nuts 36+-4 on one, 41+-6 other. Not huge diff there.
Manifold to turbo bolts and nuts are 38+-3 one, 47+-3 the other, however Nm is the same at 64+-5 Nm. 64 Nm is 47 ft/lb.
I’m thinking the greater of the figures is the correct one as the fsm manifold torque sequence references the greater numbers also. Although 47ft/lb on the turbo bolts seems a little high, I always did around 40 I thought..
You can't really "torque" the smaller manifold to head bolts with most aftermarket manifolds, so I just guess at 25ftlbs on those. The big ones on the manifold get 40ftlb. And on the stock frame stuff where I can use a torque wrong on the turbo to manifold bolts/studs, I do 48ftlb. Or in the case of basically any aftermarket mani, even stock frame stuff, they just get made tight because theres no torqueing them.
You can't really "torque" the smaller manifold to head bolts with most aftermarket manifolds, so I just guess at 25ftlbs on those. The big ones on the manifold get 40ftlb. And on the stock frame stuff where I can use a torque wrong on the turbo to manifold bolts/studs, I do 48ftlb. Or in the case of basically any aftermarket mani, even stock frame stuff, they just get made tight because theres no torqueing them.
Just weird the fsm has different specs, but they’re all close enough I guess like ya say. On the FP cast there’s about enough room to get a deep flank crowfoot on the top row. The bottom is fine. And I got a new made in Merica CDI torque wrench to use
Hey guys, I didn’t see it on here but I need the torque spec for the alternator pulley, I’m replacing mine with an Stm 10% under drive. Also if anyone has a good technique on how to hold the oem pulley so I can remove the nut that would he awesome
Sep 11, 2016, 10:07 AM
