thinking about getting one witch series should i get? im thinking baout the 30 series ??

 

those mufflers are too loud for rotary, you should get a magnaflow muffler like directfreak's, they are pretty quiet

 

Or go with the Racing Beat muffler.

 

well racing beat cost 237 bucks compare to a magnaflow that is 69 buck and you can take it to any muffler shot to get it weld for 25 more bucks

 

You might pay less initially, but how much are you going to save when it blows out in a month or two and you've got to replace it?

Go with RB quality, that way you've only gotta pay for it once. I've got header to straight pipe to RB muffler, and the damn thing is quiet!

 

directfreak have magnaflow mufflers and all the turbo guys in the turbo section use them too, magnaflow muffler are not glass pack, the are steel packed like RB and they last as long as the RB because they are stainless steel. but they are cheaper that RB

 

I've got a 40-series Flowmaster I'm using as a "presilencer" and I HATE it! Don't waste your money trying to patch together some home-made job like I did, just spend a few more bucks up front... it'll save you a headache later.

Flowmasters are designed to make piston engines sound big and throaghty (misspelled, I know) and the result on a rotary engine is an idle that sounds like a Cessna and a tin-can like metallic note throughout the rest of the rev range. On top of it all, because they're designed to resonate the sound like a big block Chevy, you end up with this annoying high-pitched tunning fork like noise at idle as well... that's my experience anyway. I can't wait to put a full RB setup on it like I should have done all along!

-Kennet

 

I had a straight-thru magnaflow 6" round, 18" long 2.5" pipe on my blue rx7 below for 1.5 year of street driving and did roughly 12 weekends of track time shifting @ 8800rpms. Never blew out. Never changed it's note. Sounded real good and revvvvvvvvved.

flowmasters sound like **** and don't muffle very well. tin can, exactly.

 

I tried a magnaflow on my SP 12A last week and it did not help quiet it any more then the very cheep Raptor that was on it before. the shop wanted 50 for the magnaflow or 25 for a new Raptor. I put the Raptor on. It is still way to loud for me. The magnaflow is about 100 at jegs so I am just going to save a bit more and get a RB one. The RB for a 79 is 230.

 

which magnaflow is typically used?

 

Hades12, what model and size magnaflow you put on there?

rutnick I put my magnaflow specs on my previous post for your reference.

 

Dont know the model. I did not look at it that close.
It was an oval with center in and center out. 2.5 inch. We cut off the old Raptor and then hung the magnaflow in its place and listened to it. then another Raptor and then an OEM style one. None really helped. So I just put back on a new Cheep Raptor.


The engine is a SP with a weber 48 and RB header and no cat.

 

A oval center in and center out won't muffle much.

Oval mufflers are small as it is. It needs to be offset in/out for the exhaust to 'hit' the baffles and packing; and get quieter.

My 18" long does a better job. Just my $.02.

 

I wish I would have gone with the full racingbeat vs just a racingbeat header and center section.

the custom peice I had on the back that cost me over $280 to build blew out after a month and a half.

 

Ive got a flowmaster on my car.......It was on there when I bought it so I dont know which one it is, but it dosent sound that bad

 

I got my Racing Beat muffler used for $150. Excellent condition, sounds and looks wonderful.

 

i landed a free 2.5 inch flowmaster, for my 85 12a, its not to loud, sure beat the one that had a holein it that you could stick your hand in.
i saw a decent power gain, and i really dont care about the noise, has not goten me pulled over yet, and its been on there scence late august, and no blowouts,

i belive its a 60 s. all i know its the one they make for imports

Robert

 

hmmm man tough decision mannn cuz im planning to get the racing beat header to maybe a high flow cat if not just to a straight pipe , but then i dont knoe what muffler . well where can i go look up on magna flow mufflers and witch model works best ? and how big are yours guys' piping ? i was thinking about 2 1/4 in. but ill wait for all your guys' input

 

if your going 2 1/4 heres the part No for the right magnaflow muffler part No 642-11225. is 2 1/4 inch offset inlet, center outlet. go to jegs and tipe this part no and they are $69.95

 

i just got my flowmaster on my fb T2, its definately loud and does sound like a tin can. its a two chamber and after 3 afterfires its now down to a .5 chamber. needless to say you cant miss the car on the street.

 

eddierotary are you crazy? That peice of **** isn't stainless steel it's aluminized steel so that think won't last long at all. Put on that and it's going to burn out.

 

and what you think most flowmasters, dynomax, cheap muffler and exhaust pipes are made off? and you can get the in SS too. what it get burned is the packing inside the muffler not the hole muffler just search on the website. here the part No for the SS magnaflow one. 642-14325

edit, BTW i have a dynomax muffler that is aluminized steel and i still havent seen melted yet but i know the packing is burned

 

how much was your dyno max and do you feel a power difference , and how does it sound like ? i dont like the high pitched ricey bullshit so yea

 

get a magnaflow, dont get a dynomax, magnaflow last longer that dynomax because is steel wool packed, dynomax is fiberglass packed. mine lasted 3 years and now is loud because of the packing inside is burned. it doesnt sound like a rice burned , it have a nice deep sound but only lasted 3 years

 

oh okay kool so how would the magna flow sound like?? the one with the partk number that you gave me and where can i look it up to see witch one it is thanks