hay DRAKE1 give him some
advise
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| School Me On Exhausts........ http://mudmotortalk.com/mmt_v2/viewtopic.php?f=2&t=20976 |
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| Author: | lookinup [ Sat Aug 13, 2011 4:38 pm ] |
| Post subject: | School Me On Exhausts........ |
Hey all, I have an 18hp Vanguard on a GDLT. I am wanting to wake this motor up a lil bit. Back when I was into drag racing and just going fast in my truck, I was always told "The more air in/air out is better". IS this true with these motors as well? I have thoughts of doing the exhaust first, and was in touch with Micah for a single BPS SS exhaust. (this would be a single muffler that would usually be a twin muffler set-up) My thinking is that these mufflers are used on 36HP and up motors. Since I have an 18hp motor, would this muffler have any real performance value/better sound since I would be only using one? Can I achieve the same sound/performance from say a cherry bomb muffler or another type of round muffler found at JEGS or other performance shops? After exhaust I would like to do a k&n air filter and possibly a new "stock" carb. How important is the air in/air out and back pressure of the mufflers on these motors? Thanks and sorry for the long read, Lookinup |
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| Author: | Woodiebuster [ Sat Aug 13, 2011 4:50 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
I don't know what the specs. are on a 18's exhaust ports, but the only exhaust that may fit it is a 23 hp BPS crossover. Without any other mods you won't notice the gain from the exhaust except a little throttle response and a few RPM's |
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| Author: | lookinup [ Sat Aug 13, 2011 4:58 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
| Author: | swamprat11 [ Wed Aug 17, 2011 9:25 am ] |
| Post subject: | Re: School Me On Exhausts........ |
hey man, I got a 23 LA special mudbuddy, and had the same questions as you. wakin it up a little. my buddy who is a small engine mechanic helped me out. we opened up my stock exhaust and removed the baffles and cut a hole in the back and welded a pipe extension about 3 inches to it, thus doubling the exhaust. installed a k/n filter and really woke mine up. granted, not a bps and mikuni but also, not 1700.00 either. picked up about 300 rpms and about 3 miles an hour. gets out the hole a little faster too. |
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| Author: | diceman [ Wed Aug 17, 2011 5:43 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
hay DRAKE1 give him some advise
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| Author: | lookinup [ Wed Aug 17, 2011 6:34 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
Thanks all, Drake1...is he the man on this subject? Pm at ya about the exhaust and modified K&N air filter bud Lookinup |
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| Author: | drake1 [ Wed Aug 17, 2011 8:07 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
| Author: | cb5331 [ Wed Aug 17, 2011 8:16 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
| Author: | Mag10 [ Fri Aug 19, 2011 11:45 am ] |
| Post subject: | Re: School Me On Exhausts........ |
PM me your email address, I can send you some sketches of an exhaust that I have put on both a 27 kohler and a 23 briggs. Not much to them. Also, If you really want to learn, read the book "Fundamentals of Intake and Exhaust Design" I know that suggesting a book on this site may be a bit of a stretch!!! Mag10 |
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| Author: | lookinup [ Fri Aug 19, 2011 7:25 pm ] |
| Post subject: | Re: School Me On Exhausts........ |
Mag10, PM on its way, thanks bud. And suggesting a book is great.............as long as it has lots of pictures! Lookinup |
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