I'm sure you're right and you know more than me, but isn't it true that max piston speed is achieved somewhere around 75 degrees before and after TDC for most common engines. If that's true, the piston(s) that will be "balancing" that one/those ones that is/are traveling in the opposite...
Are the definitions of first and second order vibrations universally agreed upon? I think there are very few truly balanced engine designs. Some say an inline 6 is, but the fact that the piston travels faster on the top part of the stroke than on the bottom (or is it the other way around)...
I changed my mind about this. I decided to go with a longitudinal Acura V6. It is from a 1993 Legend coupe. 6 speed manual. Rated at 230hp. My measurements indicate I will be able to save the rear suspension (which I plan to convert to 944 stuff), and that I will need to cut out the package tray...
Cool.
Good news. It looks like both the Honda d and the Saturn 1.9 have most of their oil drain holes on the intake side of the head, which is the direction I want to lean the engine.
Looking at pictures of the innards of both transverse manual gearboxes, I would say the news is not as good. I...
Oh I missed the 60 degree part. The 3.8's are 90 degree. I think the 60 degree engines are the 2.8's, 3.1's and 3.4's, which came in dohc. But the 3.8 is the Daddy.
Those GM 3.8 V6's are pretty amazing. The engine has a history that spans from the 60's to the early 2000's. GM sold the rights to Jeep then bought them back. They came up with the split pin crank that made it even fire and then went on to turbo and supercharge them. You can take the...
Some great points and you've done a good job of naming many of the questions.
you haven't told us what you want to use.
This is from my first post: The two I like the most are the Honda d series and the Saturn 1.9 twin cam
Again I ask, what is different about a VW 1.6 diesel in the back...
Were you able to see the diagram in my first post? Imagine a transverse FWD drivetrain, in it's stock vehicle, with the engine in front of the axle centerline. Now rotate the entire drivetrain, without reclocking the orientation of the engine/trans, toward the rear of the car about the fixed...
Thanks for the examples of the MC and airplane engines. Other examples include Subaru flat engines and the very engine that is in the car at the moment, a flat 4. I think it returns it's oil to the sump from the heads via the pushrod tubes.
No I won't end up with a tube frame. Lots of measuring shows that I would only need to cut the package tray behind the seat. I won't have to cut the pan or change the rear suspension (with the possible exception of clearancing the trailing arms.
I agree that the oil drains are an issue. I hope...
I am contemplating an engine swap into a 1974 VW super beetle. I want to avoid using an adapter plate or combining an engine and trans that did not come married from the factory.
The idea that I am considering the most is to take a transverse 4 cylinder and it's FWD transmission and tilting it...
My understanding is that 90 degrees is the best bank angle for a V8 while 60 degrees is best for a V6. I have studied the math that suggests that a bank angle of 90 degrees permits equating the effects of two pistons/rods sharing one crank pin to a rotating mass, which can then be counteracted...
Based on a little more searching, it would appear that there is no data in those files for steady state/cruising/steady hp conditions. If I am wrong please let me know.
Brian
I am trying to find some data with corresponding road load horsepower and fuel economy values so I can do some examples for calculating BSFC. This data seems particularly difficult to find/read. I found these two links:
EPA Road Load DataBase xl Files
EPA Road Load Data Explained pdf
I can...
