Hi, I would appreciate your wisdom to help me understand what this may be? the tube sealed with a bolt .... where does it goes or what function? Note: I dont own the car, its for sale. Image Unavailable, Please Login
Seems like a exhaust gas analyzer tube .. look like it was made / fabricated These tubes are used to connect to a gas analyzer to tune carbs/ fi etc .
Another possibility is that it's a remnant of a disconnected EGR system (that also uses a small metal tube to connect into the exhaust system) -- used on 1980-83 US version 308. What year/version/model is this (the welded aluminum insulation around the exhaust pipe suggests it is a US version)? Agree a lot with Dominick that the fitting on the end of the tube, and the bolt in the fitting, look like the exhaust sampling hardware, but those tubes usually aren't so long. (Something very "homemade" looking about that perforated exhaust diaper and the grill around the tailpipes.)
Then I have to go with Dominick -- an exhaust sampling tube that someone added (as I don't see how a stock one could be in that area).
Some of the Euro versions were converted for US emissions. They welded tubes in to the headers and attached it to a fan that blew fresh air into the exhaust to pass emissions testing. Maybe this is a version of that. But you said it was a US car. Are they sure of that?
Why? I have yet to determine where the connection goes. the selles will look up and let me know. I guess, that if it's on the CAT or mufflers, it shouldn't matter much.... but what do I know. Please explain
Homemade items don't pan out well.. if its not original equipment that came with the car, its considered problematic and expensive to correct! Just my 2 cents!
RodC308gts... sorry pls disregard my rude comment to you, I misunderstood your concern response above! I was also going to say something about the engine guard... that also doesn't look original, someone made one out of a screen material FYI...
The sampling tubes on the rear header bank are removable. The front bank risers tubes are fixed and route to the firewall. While I know jack s*&^&*t about 328s, this almost looks like a rear tube that was lost, fell down and is riding loose in the muffler support. Don't over think it. It's definitely the capped end of a Factory riser tube, it's just "out of place".....badly out of place. Only "stuck into the tire making a flat" would be worse.
Do 328s even have individual sampling tubes???? At some point the gas analyzer moves to the tailpipe tips, and fuel mixture adjustment are easier with Colortune glass spark plugs.
Yes, US 328 do, but (unlike 308) the ones for the 1-4 rear bank are "ganged" into a single assembly like on the 5-8 front bank: https://www.ferrariparts.co.uk/diagram/ferrari/328-gtb-gts-(1985)/018-exhaust-system-(for-us-and-sa-version) Image Unavailable, Please Login But I like your thought about something dropped or left behind -- maybe a Mechanic/DIYer was trying to take a sample at the inlet to the cat (i.e., take a sample from both banks all mixed together).
The car is a 1988. Based on what Steve sent, from a1985 car. There’s another for a 1988 Image Unavailable, Please Login And it looks like part 59
You've found it - note that the plug 29 is not used on a car that does use tube 59 (so tube 59 mounts into the same port at the cat inlet). And interesting to see that they realized later that they needed to add a supporting loop clamp (i.e., part 63 replacing part 59 after exhaustion).
No, there is actually a factory exhaust perforated screen intended for all US 328 (Ferrari part 61881000) under the exhaust box and the catalysers, but I'm not sure that this one is original; although it might well be. Euro 328s have a very different exhaust silencer, and a different exhaust installation, allowing the rearmost grille surrounding the exhaust tubes to be mounted slightly closer to the engine, which also lets the - longer - exhaust pipes protruding more. They do also have a protection for the rear exhaust manifold and/or exhaust box, but it is a short metal sheet only at the front of the exhaust (at the left of the enclosed pic of my 328 GTS gearbox - that pic illustrâtes the number of gearbox, which is 3710F106MB). That metal sheet is sometimes missing on some cars. Rgds Image Unavailable, Please Login
