Hi , had my indy do a big bore on my 88 and went to 95 with the Wiseco forged pistons, What is the break in procedure and heat cycles, i want to do this right since this is the most crucial period for durability and reliability

What have you guys done for the break in

 

ride it like you stole it has always worked for me

 

I've always done a dyno break in

 

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You should be asking the mfg of the big bore kit (wiseco?) and the local indy that installed kit what their rec breakin procedure is inc what breakin oil they rec too.

Thats because if you do exactly what they rec using breakin oil etc they rec too and happen to have issues either during or post breakin neither of them can say you didnt follow proper breakin procedure and or didnt use proper breakin oil as a reason to not back their product or mechanical work should a problem come up.

So if you were to follow /do what we rec here that doesn't line up with what the mfg of big bore kit along with what your local indy rec's for breakin your very likely going to be " SOL " should anything go wrong with your new 95" build.

Just my $.02 coming from 45yr's + of 1st hand exp i have wrenching bikes, cars & basically anything with a motor./LOL!!

Scott

 

Subscribed.

 

^^This^^,, however, surely the Indy put required oil in there before you got the bike back !!! If there's any doubt about that I'd go direct to the kit maker for info. Barring specific break in directions I'd follow the break in procedures per your HD manual, neither high revving or lugging for the first 500 mi and changing oil/filter after 1500. Like giving an enema to a dead man, it might not do any good but it can't hurt.

 

You paid your indy to install the big bore kit and I am sure it came with break in recommendation so why ask.

 

I just hope you have better luck with the wiseco's than I did !!!!

 

Indy said he put break in oil (dino oil), and for break in said to take it easy for first 50km , no lugging and vary the speed, told me to drive for a few miles then let cool off, then do it again, was just wondering others have been told, i did check Wiseco website and no mention, did a web search and get all kinds of responses

Figured i would ask those who have done this on a harley

 

There's nothing special or complicated about breaking in of an engine. Just keep the rpm's moderate but variable for the first few hundred miles. Allow it to run in its normal temperature range. Always allow it to fully heat up while riding. After about 500 to 1000 miles dump the cheap oil and put in some syn. You're good to go. Of course you could make it as complicated as putting a man on the moon. Heat cycles, multiple oil changes, and all that kind of stuff. But there's no evidence anywhere that it does any good. None.