Mark, I can't help asking: say somone wanted you to take their stock engine, calculate proper port shapes, valve sizes, compression ratio, re-engineer to use ITB and custom ECU, etc, etc. Basically almost everything you are doing to optimize this engine, only sticking with the stock heads so that whole interface doesn't have to be re-engineered. Would you do it for a customer?
Chris unfortunately so !!! I'm not like Mark where he has a shop at home . I must do everything at work and invariably that means at some point I must do some work work as well . I am at a point where I can assemble the bottom end now . Cams are finished at Web and I just need to short the heads . So we are at about the same point !!! Wish you were closer and we could pop your block in the wet blaster and clean it up nicely .
I guess Im going to have to give some thought to the intake manifold pretty soon. Some months ago I decide it would be best to weld to the head instead of trying to bolt something on but I never thought about what the welded-on thing might look like, or how the air box will work and connect, or how the throttle linkage will work, or how the idle air control will work. Ive got at least a couple weeks of grinding and rough porting but the intake needs to go on before I can finish the porting .man I still have a long to-do list
The list may be long, but now it's mainly all detail work. You have gotten a majority of the hard stuff done!
Dave will be on the road long before either Chris or Mark, most of his stuff is shiny and ready to go in. It'll be a true jewel of a motor too!
I think the exhaust prots are fine and I'm expecting the flow to come right up to where it needs to be with basically just the valve size change.
I begged a bit and they re-quoted the buckets at $36.10 ea vs the original $50.92...every little bit helps.
Ah Mark , I looked at those Duc TB for the 360 the otherday and wondered about the idle air bypass screws ??? Being a Vtwin you can get to the side of the TB easily , but we want to pack 4 or 6 next to each other and somehow get a balancing linkage in there !!!!! I thought maybe a 2 TB baseplate and then try and use a common spindle ala Weber ? Then I only need 2 balance linkages , you need 4 , but thats better than 10 ??????? The idle air I havent figured out . What are your port spacings ? If they are similar maybe I can look at the baseplates if you think it's an option ??
Youre ahead of me; I havent looked at that yet. My bore spacing is 94mm, as 308 so if you have a problem then I have a problem. My thought on the linkage (remember this is without really thinking about it) was to run a shaft down the center with 6 take-offs on it and plug on to the original ducati throttle arm on the TB using a shaft with right/left rod ends to adjust the length. I was thinking Id bolt to the ears on the TBs with a bushing at each pair to keep the shaft nice and stiff. Idle air control Im not entirely sure about yet. My first thought was just connect to a little plenum .but I dont think this will work very well without a check valve of some kind on each cylinder, otherwise the other 11 will feed the one looking for air and bypass the IAC valve. I may go without and see how it does. The bikes appear to use a cable to a cams that bumps the throttle plates opened a touch .I could use this idea but connect a solenoid or stepper motor to a cam on the main linkage.
I just got a note from JE .they need a combustion chamber mold to proceed. It looks like Ill be busy with this for a couple days.
Ok you have thought about it abit !! Not sure there is room next to each other for that , but the idea sounds good . If I have achance I'll check it out tomorrow .
I'll probably just make a 1" "stub" line out of aluminum.....just somehting quick and easy so I don't get distracted from finishing the heads.
You might be right on the spacing.....I haven't actually really looked at it. The TPS mounts can be removed from the internal TBs to make some room if need be, but another plan may be required.
That's what I was hoping. Here's my dream car - www.madle.org/og06lanflamizag59.jpg - only they don't have enough power. But with a mk e engine?!!! Aston Martins tremble! Someday...
Tonight's project was to yank the engine/trans out of the car. Tomorrow I can start making the temp sleeve I need to make the combustion chamber casting. Hopefully this will only delay me 1-2 days.
Lancia v6. Car designed by Jano and thus the automotive legend himself. Thanks to chassis balance (gearbox combined with diff) I've only read about this car does not need more power just a driver brave enough to drive it like they used to when it was new and carry high cornering speed Pete
