Why to fit Carillos?

M

MotoJouni

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Location
Finland
I was once told that I should change the original SFC 1000 con rods to Carillos on my standard engine. Why?

I understand that if I'm going to tune it up very much which I'm not going to do.
My guess is that most problems with con rods has nothing to do with quality of the originals. They may fail if something else is wrong first and then every con rod would fail, no matter the brand of them. It's just a guess, but I have never heard of problems here from local owners rided already the bikes for decades.
 
Hi Moto Journi you dont have to do anything with your con rods if you don't want to but I am certain there are some Laverda owners with a hole in their crankcases from a snapped con rod that wish they had of.
Look at it as a form of insurance, in saying that I have a Jota with very high kms that I bought new that has her original rods and a couple of other mates that are in the same boat! I just ride with my fingers crossed but plan sometime in the future to changing the rods as I would be very distressed if they failed on this particular bike!
 
My crank has been rebuilt about 4 times.I was keen for Carrillo's right from the start.The first time the supply has run out.The next few times I was all spent out and justified the decision with not going past 6k much.That comment was rebuffed with a lots let go at way less than that.Yogis 1200 had done 25,000ks and was a clean looking bike till it snapped a rod at 80 kph heading home from a club meet.Maybe it happens after some over the top stress as happened in its past I dont know.But I went Carrillo's on the last rebuild,I just couldn't not do it when the latest opportunity arose.BTW a couple of these crank jobs were real out of left field fuckups. Bigend. cage braking up,warranty fix by Red,knocking the crank out of phase when the number 1 sleeve snapped and dropped into the crank path.Warranty fix by Red.He got lots of crank practice fixing mine.As I said a couple of these were completely unavoidable and Red was great with the fixes.
 
Why fit Carillo's? Because my original rods were stuffed and Red said to use Carillo's. Good enough for me.
 
just worked it out, I'll sell Carrillo conrods for AUD$1.24/gram
plus GST if applicable and postage costs of course

 
Had my Jota crank redone about 12 years ago as mains were shot. On original rods though small end bushes were replaced too. Has been revved enough to bend valves, but touch wood no rod issues...I would think they would have appeared by now, but that may be wishful thinking! Apparently carillo are actually heavier. Personally I don't like the look of them...and there have been issues I recall where the appropriate clearances have not been allowed for , causing major issues. If I ever have the motor apart I guess I would replace the rods , not sure how crank is balanced when it's been drilled to balance Pistons previously or if that is even an issue? Think Keith was getting some bespoke rods from one of his sources, don't know latest on that.
 
I was told from an expert in Laverdas, that there is no use in replacing good rods with carillos if you do not want to race the bike. he suggests to polish the original rods to reduce cracking probability and else make sure the timing of crank and ignition is right, no fuel related hydraulic lock is possible etc.. On 99% of all engines, the original rods will outlast the owner. Bad luck though, if you are within the 1%...  ::)
 
Have seen a fair share of snapped originals, but have not yet found out the root cause.  Most failures that I know of happened at slow to moderate engine speeds, which does really point to prior damage as opposed to absolute over-stressing of the rod.  This would rather occur under full load at high rpm.

I'm quite at ease with stock rods in my own engines.

Guess a set of Carillos or similar may be a sort of insurance, but still no guarantee, lots of other things to go wrong with results in a similar cost bracket. :D

piet
 
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