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muffler modification

Posted: Sat May 13, 2006 12:31 pm
by scoot2er
Hey, when I was repainting my muffler I noticed some sort of restrictor plate restricting the flow from the engine through the muffler at the top of it's neck. If i grind this out will it result in more M.P.H.? ( '87 honda spree, stock except UNI foam filter, 32 mph max right now).

my fault

Posted: Sat May 13, 2006 1:56 pm
by scoot2er
ok my fault, i know im ignorant about exhaust systems. where do I drill the requisite holes and what do i chop on to make my spree faster? I saw the other welding mods and such, but I just wanna keep my muffler in tact and use that with a few very small mods.

Posted: Sat May 13, 2006 6:59 pm
by diomike
do the pully thing it helps alot

Posted: Sat May 13, 2006 8:22 pm
by myhonda
yes take that plate out of the mufler. it is a restricter plate stealing some of that power

Posted: Sat May 13, 2006 9:30 pm
by -aL-
i never noticed a plate on my elite, is there one or not. maybe somebody can post pictures?

Posted: Sat May 13, 2006 9:48 pm
by scoot2er
no other special adjustments required after removing that plate right? rejetting etc...?

Posted: Sat May 13, 2006 9:51 pm
by darat
nope i did this on my friends se and i also changed the roller weights and it gave him on heck of a take off and top end.

Posted: Sun May 14, 2006 1:04 am
by MySpree
my elte is stock and it hits 40 , hit 25 with the plates in...

Posted: Sun May 14, 2006 1:13 am
by noiseguy
Try grinding out the restriction first, then decide if you need to mess with the backend of the muffler.

Posted: Sun May 14, 2006 1:15 am
by MySpree
i have no holes in my elites... i did in my spree and i do in the aero

Posted: Sun May 14, 2006 1:44 am
by scoot2er
cool. Might I add that this forum rocks :!:

crap and wow

Posted: Sun May 14, 2006 5:10 am
by scoot2er
Crap! I tried to remove the @*#%!@! pulley assembly on my spree and I just ended up giving it colorful new names for three hours :evil: How do I keep the wheel and rear pulley from spinning? I tried removing my wheel but I need some PB Blaster to unstick the nut. OH YEAH! this whole thread is silly because I took my muffler off my engine and found no restrictor plate :oops: SIGH, at least I got reacquainted with my baby.

Posted: Sun May 14, 2006 5:16 am
by bitteraspects
the easiest way to do it is with an impact gun, if you have access to one. if not you need something to hold the clutchbell in place. they make a tool for it, but if you dont have access to either of those, then a oil filter wrench should do the trick.

Posted: Sun May 14, 2006 12:31 pm
by darat
yeah u need to hold that clutch bell or u could just stick something in it.

Posted: Sun May 14, 2006 1:14 pm
by bitteraspects
ive sen people use a wrench or a screwdriver, lodge it in one of the holes of the clutchbell, and go from there, but you risk damaging your clutch that wat