LANCER wrote on 06/05/18 at 16:17:24:The Wiseco High Compression pistons I sell raise the stock Compression ratio (CR) from 8.5:1 to 10.5:1, and the newest version is 94mm so they can be installed without over-boring your cylinder. If you do want a larger bore the correct piston was made for the DR650, not the SV650, and it must be for the mosdel years 1990-1995,not the newer DR650 which is an entirely different engine. My last 94mm piston has sold but I have a new order for more pistons that should be done in about3-4 weeks.
Be careful when going after a used Mikuni VM carb on eBay. Many are very old versions built for the old 2-cycle dirt bike engines. Beside being worn out the needle jet, slide, needle, pilot & main jet, and air jet are completely different from what we need for the Savage. Even if you found one that was functional ( the vast majority are not) you still would need to replace all of those internal parts and doing so would bring the price up to the cost of a brand new carb. Ask me how I know...been there & done that...numerous times.
Additionally, you need a custom throttle cable to match the carb and the Savage, a mounting flange (stock unit is different size), extra main and pilot jets to jet/tune it to match your engine, carb manual, air filter (carb does not fit the stock air box tube), and some carb tools are also handy. I supply all that with the carb kit. It costs $399 and you get it all in one package, saving you a lot of time trying to find all those parts from assorted sources.
Camshaft: I have the Stage 3 made from your exchange cam core. It is the only one being made now because it is the best of the 3. Cost is $299, with a $100 refundable cam core charge that is refunded as soon as I receive you cam core. Current turn around time is 5-6 weeks. Webcam is slammed up with work and has been since the beginning of the year.
I guess it depends on the condition of the cylinder walls but I wonder the HP difference between the sizes. I bet it wont be too much but I wonder if the extra displacement makes a difference.
They have some brand new Mikuni VM Slides on amazon for less than 100 which seems to be a good option, I just have to figure out the jetting which I think there is likely threads here about that somewhere but will depend on the piston and Cam I go with most likely. Are all the VM slides the same aside from the opening diameter or is there a specific one that I should look for? I think I want to ditch the airbox for a cone but I know having some sort of plenum for air the stagnate on some engines is important. Are there tuning issues with this engine when using a cone or other considerations?
299 before or after the core return for cam? Is the cam ground to a different lift and duration?
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