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V12 CBX engine
Posted: Wed Oct 29, 2008 11:07 pm
by cbxtacy
Posted: Wed Oct 29, 2008 11:46 pm
by cbxtacy
and here's a video of the engine.
http://www.flickr.com/photos/13481782@N ... 796979932/
The detail is awesome. Everywhere is neat stuff. There was a clearance problem between the valve cover bolts and oil coolers so Andreas counter sunk allen head screws into special washers to hold on the valve covers. If you search the photo's you'll find them

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Posted: Thu Oct 30, 2008 4:11 am
by alimey4u2
Posted: Thu Oct 30, 2008 9:58 am
by Don #6141
Just . . . . . amazing!
An air cooled V-12 - Is there another one anywhere?
Don
Posted: Tue Nov 04, 2008 12:01 am
by cbxtacy
A lot can happen in 5 days. Andreas assembled the engine, dumped oil in it, saw that the oil did not reach the shim buckets in the forward cylinder, and did something about it. Fairly simple really. He drilled holes in the cam lobes and plugged the end of the cams to increase pressure/flow in the cams. And incase he has to increase/decrease the holes in the cam ends he drilled and tapped the ends and installed plugs with holes drilled in them so all he has to do is change the plugs. In 5 days. And he took Sunday off to watch the Brazilian F1 GP. See:

Posted: Tue Nov 04, 2008 12:07 am
by karl sparks
This is just so cool.......

Posted: Tue Nov 04, 2008 12:21 am
by cbxtacy
The oil still won't reach the buckets but hopefully there will be enough oil to lubricate everything. The plan is to fire it up, ride a short distance, shut it off and disassemble to check the buckets and other areas of concern.
Posted: Tue Nov 04, 2008 6:34 am
by alimey4u2
Silly question I know George but has the oil pump volume been increased...

Posted: Tue Nov 04, 2008 7:11 am
by cbxtacy
not yet, Andreas is not going to run the bike hard until he is sure everything is working properly. The front cylinder is the main concern and it's really easy to work on it while still in the bike. I have a couple spare starters incase he burns them up spinning the bike over checking things. The pump is one of his concerns but right now he just wants to fire it up before he goes on vacation. We're both wondering how the CBX holds such high oil pressure with the holes in the end of the cams. How difficult would it be to increase the volume?
Posted: Tue Nov 04, 2008 7:23 am
by alimey4u2
I think there will be a supply problem George, as an example, if you take water from the Colorado river at several points (another bank of cylinders etc.) you may find little or none gets to Mexico ( cams)....

Posted: Tue Nov 04, 2008 7:33 am
by cbxtacy
and that is why he might never run this engine hard. It's all just a big gamble. It would be nice if he had the resources to construct spare's so he could do serious product evaluation like the factories but that's not the case. When you start looking just at the front head and the modifications that have been done to it, it's mind boggling.
Posted: Tue Nov 04, 2008 7:46 am
by alimey4u2
With a simple sprocket change on the oil pump you could increase flow but take care not to cause cavitation by running it too fast....
Measure the pressure at both main galleries to make sure factory spec. is maintained....Cavitation would show as a fluttering needle...
Posted: Tue Nov 04, 2008 9:09 am
by Roger@Arroyo
Wow. That's alot of work!
Posted: Tue Nov 04, 2008 9:32 am
by cbxtacy
and what the man building it has accomplished in his lifetime is even more amazing.
http://www.flickr.com/photos/13481782@N ... 0608/show/
Posted: Tue Nov 04, 2008 9:47 am
by cbxtacy
Andreas was real careful setting up the crank so as not to lose oil pressure/volume hopefully. It's still only one crank but with more rods on it. He has a Kawasaki alternater. No bracket to mount it yet but when he does he's going to plug the oil hole in the shaft driving it. He figures the oil is for the clutch driving the CBX alternater and won't be needed. That will help flow/pressure to other areas hopefully.