Doing the build yourself will save you a large amount of money. I would suggest that you reuse your 110 cylinders and build a 113. It will keep cost down, the low to mid range power with many many cams is great and upgrade the heads. This is a big deal many shops port them and they end up too large. Some shops that are doing this port work do not in fact tune the bikes so there maybe a disconnect there. Its not about airflow in terms of big CFM. In fact that is not what you want at all for a avg street engine.
The head in stock form flows more than enough air, but that is a whole other topic.
Choose a cam in the mid 241-248 duration range set compression to match the cam and use a good exhaust. Best bet is to find a builder that has built these tuned them and tested them with many other parts . They should be able to tell you how other parts in the same set up worked. Good or bad.
The wrong mufflers can create a loss of 5-8 lbs of tw and shift the tq curve to the right even with all the other correct parts. This is where a shop that is building and tuning IN house can offer up data that others cannot.
I feel this type of data is priceless , having another shop do the tune is not going to help you as it never the same shop same bike etc. But when we can run the parts same bike same dyno same day .. well you get the picture.
Now there are many shops that tune EFI bikes in house, do this type of work and can put together a package that will meet your budget and produce very nice power. Look in the 113 build post I put up a 124 vs a 113. Peak power yep the 124 is a hero .. more to it than that though.
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Topic: Anybody building their own at home? (Read 6724 times)