Originally Posted by BlackGSD
I've just purchased a '98 K1200RS. There was a problem with one of the connecting rods.
It subsequently smoked the crankshaft. A new crank and connecting rod were ordered. I weighed the rod (split conrod) with the studs, no nuts and no bearing inserts to order a new rod within weight specifications (4g).
The new conrod arrived. It looks like the part has been updated. It is a crack conrod with threaded shoulders and bolts with 12-point "star caps." The rod is within specs but when the original rods are weighed with the studs and nuts they are about an ounce too heavy.
So I ordered 3 more rods to make sure everything is within the 4 gram limit.
Since these are a different style rod:
What is the torque specification and/or angle? Is it the same stated in Clymers or the shop manual?
Can the conrod bolts be re-used? The bolts that came with the new rod appeared to be already torque'd.
Look like you are going to have to do some part number research on www.webparts.com
and find out what was shipped to you.
It looks to me on the two pdf's I sent that there is a difference between the '98-'00 and '02-'04 conrod along with different torque values (30Nm. vs 20Nm.).
The later('02-'04) conrod also states to use "new bolts"! Although I doubt the new conrod bolts were torqued to 20Nm. +80° angle. (Torque is for dry bolts before instillation.)
If you need more spec. information let us know. I have both '98-'00 and '02-'04 manuals.
I am a little confused on your term "split conrod" as in the rod cap being split at 90° to the centerline(small bore to big bore) of the connecting rod? And the term "crack conrod" as in the rod cap split at 45° to the centerline(small bore to big bore) of the connecting rod? Are my assumptions correct?? Or are we just talking about different terminology for rods w/studs and rods w/ bolts?
I looked through the oil filler hole on my '04 K1200RS and the rod cap looks like a 12pt. bolt on a standard "split" (my term) rod cap. No studs!
PS. Just added a pdf for '02-'04 connecting rod weight codes/ piston weight codes. This page is missing in my '98-'00 manual.