Exhaust

[Yngbld14]

Just trying to customize my Midget and was curious. Will sidepipes with cherry bombs work? will it be able to give it enough back pressure?

 

[swift6]

You could always make one side the actual exhaust and the other side a dummy for the looks.

 

[Mickey Richaud]

Or you could get a TR8! :wink:

 

[Yngbld14]

Have the pipe built, but want to make sure I can put dual glasspacks on it.

 

[Mickey Richaud]

Looks good!

I'm certainly no expert in exhaust, but that looks like you have enough restriction built into it as it is. Two glasspacks will probably do a nice job.

Mickey

 

[Yngbld14]

Thanx. Haven't seen any MG's with sidepipes. Took awhile to build, but having fun with this car.

 

[Yngbld14]

From the Spridget side wrote:

Trevor Jessie
Gold Member
Yoda

Registered: 11/02/03
Posts: 4727
Loc: Louisville KY

Interesting. Back pressure is not an issue. I'm concerned that it splits so quickly. The exhaust gases need to maintain velocity for a scavenging effect.
I don't think you're going to take much of a performance hit and the sound should be unique. Maybe a more knowledgeable person will chime in here.
_________________________
1970/2 MG Midget
Future Engine Swap Project
_________________
1958/9 Sprite AN5L/1499
1275 SuperCharged
Datsun 5-speed

 

[texas_bugeye]

I would look into some motorcycle mufflers. or maybe a couple of traps.

 

[JPSmit]

and the other side a dummy for the looks.

SWMBO says that is what I am :lol:

 

[BugEyeBear]

I have a side pipe on my '65 SCCA Racer.

Not for looks, but because there is no clearance underneath (car sits less than 1" off the ground...).


https://www.spritespot.com/gallery/view_p...Racer_FRONT_MOD

The exhaust pipe exits right behind the front wheel & a glass-pack w little restiction is located right below the door. Careful when exiting, as it can be VERY HOT!

(There is no pipe on the other side...)

"Cheers!"

-Bear-

 

[theleisure]

I've been following another thread, the Kakabox Build . The link goes to a page where the guy installs a side exit exhaust using a "powerstick" chambered pipe. It's not a spridget but it shows the potential of these forums. You might be able to use something he did on your exhaust...

 

[JPSmit]

I have a side pipe on my '65 SCCA Racer.

Not for looks, but because there is no clearance underneath (car sits less than 1" off the ground...).

The exhaust pipe exits right behind the front wheel & a glass-pack w little restiction is located right below the door. Careful when exiting, as it can be VERY HOT!

(There is no pipe on the other side...)

"Cheers!"

-Bear-

just for curiousity's sake why not send it out the passenger side? Is it just the manifold on the driver's side?

 

[Hap Waldrop]

I guessing it's A series engine so that the reason it exit on the left side, you used to see megphone sidepipes in the SCCA up until the mid 80s or so when they started doing sound control limitis and they kinda disappeared, alot of the A-series racers now use a exhaust system that goes thru the tranny tunnel. YOu can get away with just a pipe with a mild motor like a SCCA limited prep 1275 race engine, but once you start to pump up the compression and make more horsepower, a mffler wll be needed, and for sure you would wnat one on the street. each to their own on a side pipe for the street, but you bet they will be some burned ankles, and you'll get real tired of that exhaust note being right beside you ears.

Bear, the little blue car has made it's rounds, at one time a buddy of mine here in Hendersonville, NC had the car, and another buddy in Detroit area had the car at one time, now you've got it, does the car still have a T5 tranny?

 

[BugEyeBear]

...why not send it out the passenger side? Is it just the manifold on the driver's side?

Yes, because the 1275 manifold exits on the driver's side.

...but you bet they will be some burned ankles, and you'll get real tired of that exhaust note being right beside you ears.

Bear, the little blue car has made it's rounds, at one time a buddy of mine here in Hendersonville, NC had the car, and another buddy in Detroit area had the car at one time, now you've got it, does the car still have a T5 tranny?

Yes, ankles, shoes, pants legs, etc. do get burned if you aren't careful. I have plans to fabricate a heat shield but have never gotten around to it.

I bought the car when I lived in the Detroit area, and yes it has a pretty extensive, successful, & interesting race history. It currently has a 1275cc BMC A-series engine with a fairly mild build, bored .030 over, 9.75:1 compression ratio, 7400rpm red-line, and a stock 4spd trans. Sounds GREAT, handles & drives GREAT too!

"Cheers!"

-Bear-

 

[Dadandson]

You may want to look into Harley Davidson stock exhaust pipes. They are cheap, easy to get and provide, IMHO, the correct back pressure. If you think there is too much back pressure you can drill out the baffle layers in the pipe with a hole saw to provide less back pressure. Be careful though because you can't replace the baffles. I have one on my 74 Midget with a header and I like the look, performance and the sound.

 

[Trevor Jessie]

OK, someone enlighten me. Why do these engine need "back pressure"? Are you saying they need something to impede the flow of exhaust? Why fit headers if you want back pressure? I think we must be talking about different things.

 

[GeeBee1]

I think the answer lies in the siamese between two and three.

Pat

 

[mccalebr]

I plan on installing a single side pipe w/cherry bomb on the passenger side of the car I'm building. The connecting pipes are all larger than stock. Here's a mockup.

Ray

 

[GeeBee1]

Ray:

That is some pipe, Cheech and Chong would be jealous. What diameter is that, I have 2.5 and that looks bigger, or is it just the picture?

Pat

 

[jlaird]

Just checked your site again Mac. You been a busy boy. Attention to detail is your middle name. Exelcent pics and words.