| Author | Message | ||
| Newman (Newman)
Intermediate Member Username: Newman Post Number: 1316 Registered: 12-2001 |
The 328's had a single inlet like the QV's but my carb car has 2 in and 4 out from either end of the muffler can. I wonder about this to get the right sound when going aftermarket, Some systems like Borla have 2 seperate mufflers side by side and Tubi is of course 1 muffler but may split inside. Who knows. | ||
| Mark Eberhardt (Me_k)
Member Username: Me_k Post Number: 686 Registered: 5-2002 |
Hmmm...on my '84, there is only 1 inlet, so it is definately common. Different years may be different. I have never seen a twin in/out muffler that is divided inside...but ferari is ferrari. I guess the quick test is just start the engine and cover the tips on either side with your hands, if you can keep them there, it's common. The flow from all 8 cylinders has to go somewhere, if it isn't building up pressure, it's going out the other 2 tips. Note: you should do this when the muffler is cold  | ||
| Newman (Newman)
Intermediate Member Username: Newman Post Number: 1315 Registered: 12-2001 |
Interesting you should say its a common muffler Mark, I was told it was 2 seperate mufflers inside by someone who cut one open. I assumed it mixed both banks before my friend cut a 308 muffler open. Have you seen inside one? I havent but would like to know for sure. I assumed again the pressure difference was due to the pipe length differences from the front to rear bank. | ||
| Skip Williamson (Darolls)
Junior Member Username: Darolls Post Number: 51 Registered: 7-2003 |
You should feel more pressure on the right side. | ||
| Jeff Kuehl (Cooly0)
New member Username: Cooly0 Post Number: 2 Registered: 9-2003 |
yea I am. Thanks alot | ||
| Mark Eberhardt (Me_k)
Member Username: Me_k Post Number: 682 Registered: 5-2002 |
Are you putting your hand over the exhaust tips? If so, it is perfectly normal that one side flows more than the other at low rpm. It is a common muffler (both inlets connect to both outlets) and flow tends to prefer one side. | ||
| Jeff Kuehl (Cooly0)
New member Username: Cooly0 Post Number: 1 Registered: 9-2003 |
I recently broke a distributor rotor. While I was trouble shooting I did notice that pressure from the first 4 cylinders exhast was dramatically less the the rear 4. I did finnaly figure out it was the distributor and that the front four cylinder were bearly running. I just but in the new rotor today and retrieved my power, but the pressure is still a good deal less than the rear four. Is this how it is supposed to be or do I still have an ignition problem with the first four cylinders. Thanks, Jeff |