how to get rid of the horrible gemini exhuast note

austin · rice boy Joined: 27 Jan 2003 Posts: 25

firstly i have no mig welder & have done this same mod many times with an arc welder !!!! it just takes patience..
you need to get under ur car & measure the length of the muffler that is in front of the diff on the car , keep this measurement with the outside diameter of ur pipe aswell !!!
now go to an exhuast shop & get a piece of pipe the length of the muffler the same diameter & get it flared both ends to fit over the diameter of ur existing pipe!!!
get to exhuast hangers wile you are there that clamp under U-bolts type & universal bolt to the floor etc other side..
now shop around for the cheapest 2&half inch muffler that is straight in offset out ....rare spares i usually get them for $25 each ...cheap..
now armed with hacksaw , chop out ur 1st muffler & put ur filler peice in you got earlier, cut off the muffler hangers from the old muffler & weld to the filler pipe you just fitted....
now for the tailpipe , measure the new muffler & take note where its going to fit under the floor , hack off the old tail pipe !!!!!! next you have to slot the end of the muffler that you are going to fit to the tail pipe , for it to crush down to the 2 inch gemini size "becarefull as you are gonna weld these slots up " now place the muffler under the car & bolt up the u bolts either end even tho there is no pipe comeing out of the muffler as it is now the tailpipe , place the hangers under the U-bolts & do them up but not tight.. push the muffler up to where you think it sits nice & take note of the exhaust hager brackets !!! they will be to long & you will need to bend the 90degrees to to bolt them to the floor ... undo the clamps , bend the hangers , bolt it all up tight this time , push them up against the floor mark where you need to drill the holes , drill through "the holes come through the spare wheel well" place bolts with large diameter washers "to stop the bolts pulling through the floor" tighten it all up & now weld up ur splits in the muffler to tailpipe crush .....
ok the sound you will get is pretty much the same as a high dollar late model injected car & with a nice boomy note to it.... Power & performance ? on the dyno i picked up a huge 13 hp & even better 19 pounds of touque at the rear wheels with a noticeable reduction in fuel economy...
hope its of use to someone:)

Gene FJ20DET

i dont get it?? i just put a nissan engin in and a 3.5" manderal bent zorst on Very Happy

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Gene FJ20DET

ahh ok. lol had to read it again, now i get it ;)lol
BTW: good idea
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rust3 · backyard mechanic Joined: 04 Feb 2002 Posts: 971

an easier way....chop exhaust of at diff.

seen it done, sounded alright i guess. shame it was an auto though

crazy n disturbed · tinkerer Joined: 23 Jan 2003 Posts: 181

or you could go get a 2" exhaust from what eva that exhuast shop is in moss st, neva heard a gemi sound like that, stock as a rock, auto witha 2" sports muffla with 3"tip and fuck its loud! put it on extractors n it'll b louder, oh n that shop dont rip u off either, u dont need it they wont give it to u, they're pretty good like that.

Stock TE · backyard mechanic Joined: 12 Mar 2002 Posts: 853

Has anybody tried replacing the centre muffler with a hot dog, so you end up with 2 hotdogs? I reckon it would sound much better

Mr bayce · tinkerer Joined: 26 May 2002 Posts: 328

my girlfriends car came with that set up (with extractors)and it sounds like shit! dont bother

workedTE · rice boy Joined: 19 Feb 2003 Posts: 29

i say extractors and 2" lukey system fixed mine:)... straight out of a bin too Wink

... well, the exhaust was from a bin anyway.