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...and you can 3d print head in metal now. It is just to expensive to do it. 3d printed Al and Ti have same strength as cast counterparts....after you can temper them to T6 state.... But current price for printing 100cm3 of titanium is around 2500eu... and head is around 10000cm3...fun fact... space X is printing majority of parts in there engines. Also there is no modern jet engine without 3d printed parts the primary part being compressor/turbine blades...
Quote from: MessnerMoto on October 03, 2018, 02:08:53 am...and you can 3d print head in metal now. It is just to expensive to do it. 3d printed Al and Ti have same strength as cast counterparts....after you can temper them to T6 state.... But current price for printing 100cm3 of titanium is around 2500eu... and head is around 10000cm3...fun fact... space X is printing majority of parts in there engines. Also there is no modern jet engine without 3d printed parts the primary part being compressor/turbine blades...An Industrial robot that weld like a 3D printer?3D CAD/CAM system, transform the code to program modules with correct targets sent to the robot controller. I have seen an installation where they shaped boat models to correct shape created on a PC 3D program by grinding soft material in this way, 15 years ago.
Is there enough market for such a thing, even if it was even vaguely possible to do and sell under like $4,000 a head. How many guys are interested in spending $15,000 plus on a fire breathing(relative to a Sohc cb750 anyway) engine by the time it’s done?Perhaps I am underestimating the demand.🤔George
Quote from: gschuld on October 03, 2018, 09:37:11 amIs there enough market for such a thing, even if it was even vaguely possible to do and sell under like $4,000 a head. How many guys are interested in spending $15,000 plus on a fire breathing(relative to a Sohc cb750 anyway) engine by the time it’s done?Perhaps I am underestimating the demand.🤔GeorgeLimiting my reply to this only: $4,000 for a HiPo head, even for an SOHC is actually not really out of the realm of whats often spent currently to get a stock head to its meager best. Consider:New valves, guides, and machine work, porting, intakes, studs, towers, etc. I love Mike dearly, and his work is absolutely spectacular. But it is also not cheap, but it is NOT priced on par with its actual value. He should be charging more, and would get it if it were his sole livelihood. His work is that good.I dare say there are many with more than $8k in their motors, and some with more than $12k. To think folks wouldn't pay $4k for a CNC'ed head that extended the HP of these bikes would be myopic. They only haven't because they can't currently.This is my personal opinion, but I strongly believe there are more than enough buyers for these modern, improved heads. So get cutting, Mike!
Quote from: calj737 on October 03, 2018, 11:04:15 amQuote from: gschuld on October 03, 2018, 09:37:11 amIs there enough market for such a thing, even if it was even vaguely possible to do and sell under like $4,000 a head. How many guys are interested in spending $15,000 plus on a fire breathing(relative to a Sohc cb750 anyway) engine by the time it’s done?Perhaps I am underestimating the demand.🤔GeorgeLimiting my reply to this only: $4,000 for a HiPo head, even for an SOHC is actually not really out of the realm of whats often spent currently to get a stock head to its meager best. Consider:New valves, guides, and machine work, porting, intakes, studs, towers, etc. I love Mike dearly, and his work is absolutely spectacular. But it is also not cheap, but it is NOT priced on par with its actual value. He should be charging more, and would get it if it were his sole livelihood. His work is that good.I dare say there are many with more than $8k in their motors, and some with more than $12k. To think folks wouldn't pay $4k for a CNC'ed head that extended the HP of these bikes would be myopic. They only haven't because they can't currently.This is my personal opinion, but I strongly believe there are more than enough buyers for these modern, improved heads. So get cutting, Mike! Thanks for the enthusiastic support both Cal and George....porting isn't exactly "glamorous' but your support...and the support of many other people....helps power me through. Yeah....a nice CNC head would be great considering it would be a fresh start. It would probably be close to Cal's price predication too. The billet block gets around 3,000.00 by the time you plate it and buy pistons.
Billet block is absolutely leak free too! This helped me to decide. Bore a stock cylinder should not be cheap either. Bore it for 76 mm sleeves. Weld the holes between 1-2, 3-4 and bore again? In with liners and bore for the actual pistons. I forgot the machining of bottom before and top after sleeve install.- Is Billet block really a higher cost?
I think there is more "waste" with the billet block....those 4 holes represent a lot of lost material.
Quote from: MRieck on October 04, 2018, 03:36:11 am I think there is more "waste" with the billet block....those 4 holes represent a lot of lost material. In Mike's case where the billet includes the cylinder "sleeves":6061 cylinder billet, 4.5" x 7.5" x 17.5", is approximately 58 pounds.The "holes" only weigh approximately 2.6 pounds each - ~10.4 pounds total.The material removed for the fins, the cam chain tunnel, and the bottom of the "sleeves" is heavy! Compare the weight of the billet to the finished product.
.....All I know is that gaylord is pretty full after a few processes.
Eons ago i was involved in redesigning a G50 head for team obsolete, the idea was to simply splay out the valves while maintaining the same contact point with the rockers. Externally you couldnt even notice.
Just how much more HP will this theoretical head develop, compared to a stock head with a port job, over-size valves and thin valve stems?
.....if a good all around motor is the goal, then a 16 valve head would be even better and still could be concealed in a stock looking casting.