Straight pipe equals better gas mileage?

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Model T Ford Forum: Forum 2013: Straight pipe equals better gas mileage?
Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Thursday, December 12, 2013 - 03:07 pm:

I'm wanting to squeeze every ounce of gas mileage out of my model A. would replacing the muffler with a straight pipe help?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Carnegie on Thursday, December 12, 2013 - 03:26 pm:

Short answer: Maybe. Long answer: Maybe not. Sometimes exhaust back pressure can increase engine efficiency in certain rpm ranges.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Charlie B actually in Toms River N.J. on Thursday, December 12, 2013 - 03:36 pm:

Tyrone: I'm guessing, and that's all it is is a guess, that the result (if any) would be so minumally small thay you couldn't tell. Snyder's does sell what they call a high performance muffler with less baffeling & back pressure but who knows? Like Tom says some back pressure might be necessary.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kenneth W DeLong on Thursday, December 12, 2013 - 03:37 pm:

Once it's warmed up how far are leaning the mixture rod adjust??Bud.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Thursday, December 12, 2013 - 03:50 pm:

You will get your best mileage if you tow it on a trailer.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Thursday, December 12, 2013 - 03:59 pm:

wrong ted. i pull my A on trailer with a 93 bronco 302 that gets maybe 10 mpg on a good day, a tale wind, going down hill. :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Thursday, December 12, 2013 - 04:59 pm:

Tyrone,

That 10 mpg is on your truck. I thought you were concerned about the MPG on your A, which under those circumstances would be fantastic.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Thursday, December 12, 2013 - 05:30 pm:

good point. so if my A gets 20 mpg normal, and an added 10 (trucks mpg) for being hauled, that would mean that the A gets 30 mpg while being hauled. so that is better than the mpg the A gets when being driven. heck fire, i'm just just going to haul the A everywhere.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Aaron Griffey, Hayward Ca. on Thursday, December 12, 2013 - 11:25 pm:

I read in some old book someplace that at 18 MPH a model A would get 35 MPG, but at 35 it would only get about 18 MPG.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Garnet on Friday, December 13, 2013 - 03:32 pm:

I figure my racer goes X mpg for my whole trip. Now, if I goes halfways, then I'm gettin' X/2 mpg. But then I'm also getting X/2 mpg on the way back. So since I'm back where I started that works out to all of my mpg's and I didn't go nowhere! Stick with me here. Now, if I WAS to go somewheres I'd be getting twice the mpg's, but after I come home I didn't go nowheres again so that's four times my mpg's ... as near as I can figger, the more I drive - the fuller my gas tank will get!

That danged Bruce was always such a show-off with his "the world is flat and I can prove it" routine. I figger if it really is flat, I can drive it but I need a few spots to empty my gas tank on the trip.

Regards,
Garnet

Oh yeah. That stupid fly isn't going anywhere if the windows are up. If'n he ain't goin nowheres then he's doing 0 mph ... sheesh ...


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tyrone Thomas - Topeka KS on Friday, December 13, 2013 - 03:53 pm:

garnet. so then do i than surmise based on your calculations, if you were to drive your car backwards, your gas tank will fill and even overflow if you were to drive far enough?


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