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Re: Big Valves in a waterboxer head
Posted: Sat Mar 23, 2013 3:46 am
by buildabiggerboxer
Doug, sounds good, how much meat is left in the liners at the case end spigot? it will be a great stump pulling motor, i would leave the water jacket height for now, all i do to increase the gasket deck clearance is skim the head face, then use the stock gaskets, i only use Elring gasket sets, they are the best and survive much longer than other cheaper brands.
good work.
Re: Big Valves in a waterboxer head
Posted: Sat Mar 23, 2013 5:06 am
by Dougs Auto
Hi All
The case end of the liner wall thickness is .075 the length is 1.625. the head end is somewheres around .175-.185 don't remember for sure. I bored out the heads about .010 shy of hitting the head bolt holes. still needed the O ring on the top of the cylinder to seal. The cylinders were air cooled AAA 101.6 I machined off the fins and shortened them up to fit the boxer. Without the fins the walls are way to thin. not a lot of rigidity left in them. I had to squeeze them in a vice to get them back round. Since this is just a proof of concept engine I am not too worried about that. Once I get the right combo I am getting Darton as cast sleeve blanks and machine them to my specs. I used the air cooled just because I had them.Got the new jets and tubes installed going to do more dyno tests today. also going to try a different intake set up. an EMPI weber IDF with close to stock cast type 1 ends just for the hell of it.
as for what this engine may be used for, do an internet search on my name see what you come up with.
Doug Schwochert
Re: Big Valves in a waterboxer head
Posted: Sun Mar 24, 2013 5:00 pm
by pocketrocket
Sounds cool sure would like to see the engine got some pictures? Rocky
Re: Big Valves in a waterboxer head
Posted: Mon Mar 25, 2013 8:24 pm
by Dougs Auto
100_0157.JPG
100_0156.JPG
100_0155.JPG
Here is some pictures of my project engine. Tried the EMPI IDF 44 carb with the stock type 1 ends, killed everything lost almost 30 HP! anyone looking for a performance gain by switching to the EMPI style manifold with a single IDF Carb. it may be an improvement over stock. tyring to get any serious HP from the configuration aint happening.
Just my uneducated findings
Doug
Re: Big Valves in a waterboxer head
Posted: Fri Apr 05, 2013 11:25 am
by giuseppe
ciao ragazzi,queste sono le mie teste:44x37.5
Re: Big Valves in a waterboxer head
Posted: Fri Apr 05, 2013 8:24 pm
by Dougs Auto
head 2.JPG
head 1.JPG
here a couple pictures of the big valve heads
Doug
Re: Big Valves in a waterboxer head
Posted: Fri Jun 07, 2013 5:30 am
by Passatman
Wow very nice i hope to have a waterboxer done sometime in the future and would love to also put bigger valve in for more power and torque.