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1904 ways of building it ?
Posted: Fri Sep 18, 2015 9:01 am
by djvw1969
I'm interested in building a 1904 VW engine. I've seen two ways to do it. First is to use A pistons and a short 5.325 rod. Second is to use a B piston and long 5.500 rod. Which would be the most beneficial to an engine with stock valves, Engel 110 cam, 8.1 compression ratio in a stock bug?
Re: 1904 ways of building it ?
Posted: Fri Sep 18, 2015 11:43 pm
by 66brm
Either provided you keep a tightish deck height, you won't feel the difference
Re: 1904 ways of building it ?
Posted: Sun Sep 20, 2015 9:19 pm
by craigvwdude
I did it once with "A" pistons. If I'd ever do it again (I wouldn't) I'd use "B" pistons and a longer rod.
Re: 1904 ways of building it ?
Posted: Mon Sep 21, 2015 7:51 am
by djvw1969
Why wouldn't you build another 1904 ?
Re: 1904 ways of building it ?
Posted: Mon Sep 21, 2015 8:19 am
by Chip Birks
They only cost a small amount less than a 2276. You pretty much only avoid case clearance work, and end up with a motor that is wider, making less power. Besides, I'd way rather putt 94s on a 69 stroke, and get the option of running big heads on the motor.
Re: 1904 ways of building it ?
Posted: Mon Sep 21, 2015 8:51 am
by Ol'fogasaurus
A longer stroke usually gives a bit more torque or so it has been said.
Re: 1904 ways of building it ?
Posted: Fri Sep 25, 2015 5:24 pm
by craigvwdude
A 1904 is a waste of time unless you already have the parts. If you do, I'd say go for it. If not, use a 82mm crank and be done with it. Much easier to build.