msbulldog601 Posted October 29, 2021 Share Posted October 29, 2021 Hello Everyone I’m trying to reroute my exhaust and put a muffler on my truck right now it’s straight pipe. I look at the pipe coming from the exhaust and saw what looks like to me a little cylinder or a “gate” on the side of the exhaust pipe with a beaded like at the bottom (maybe air?) Do anyone know what it really is and what it’s for? Please take a look at the pictures. I want to run my exhaust under my cab but I’m not sure I’m I remove this what will happen. Truck is 1997 CH 613 Thanks for any input. Quote Link to comment Share on other sites More sharing options...
880joe Posted October 29, 2021 Share Posted October 29, 2021 Looks like an aftermarket exaust brake that has been added to me 2 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted October 29, 2021 Share Posted October 29, 2021 I believe this was a factor option exhaust brake . I think it was called the Stealth Brake. Saw a few stick closed and cause issues yo say the least . 1 Quote Link to comment Share on other sites More sharing options...
doubleclutchinweasel Posted October 29, 2021 Share Posted October 29, 2021 EB is what I was thinking. Here's a pic of a Jacobs piece. 1 Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment Share on other sites More sharing options...
msbulldog601 Posted October 29, 2021 Author Share Posted October 29, 2021 Okay thanks I’m going to take it off… what would the line/hose be going to? Quote Link to comment Share on other sites More sharing options...
Hans Remmers Posted October 30, 2021 Share Posted October 30, 2021 It must be attached to an air solenoid that is typically easy to unhook. Is it an electronic or mechanical engine? Does it have an engine brake as well? I've never seen a CH that didn't run the exhaust right under the cab. That seems pretty rare on a Mack. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted October 30, 2021 Share Posted October 30, 2021 just for kicks, look up 'stealth brakes' this may be one of those rare cases.... I barely remember them add on to assist the crapy dynatards.... I could be all wrong here, but..... jojo Quote Link to comment Share on other sites More sharing options...
Mark T Posted October 30, 2021 Share Posted October 30, 2021 That's a Stealth Brake and it is intended to work in conjunction with the Jake. If it's removed (if it even still works) you may want to consider resetting the lash on the Jake. That exhaust brake enables it to have a larger lash than a non exhaust brake should (should ) have. Quote Link to comment Share on other sites More sharing options...
msbulldog601 Posted October 30, 2021 Author Share Posted October 30, 2021 The truck does not have an exhaust brake I’ve never used it I don’t even see a switch or button on the inside so I’ve never used exhaust braking with this truck service brakes only Quote Link to comment Share on other sites More sharing options...
msbulldog601 Posted October 30, 2021 Author Share Posted October 30, 2021 4 hours ago, Hans Remmers said: It must be attached to an air solenoid that is typically easy to unhook. Is it an electronic or mechanical engine? Does it have an engine brake as well? I've never seen a CH that didn't run the exhaust right under the cab. That seems pretty rare on a Mack. Mechanical Engine and no engine brake Quote Link to comment Share on other sites More sharing options...
Hans Remmers Posted October 30, 2021 Share Posted October 30, 2021 Being mechanical it is most likely to have an internal or external throttle switch on the injection pump that could be unhooked as well. It seems you would know if it was operational or not and should have a dash control switch like an engine brake. In some cases they can work as well as an engine brake and are utilized in situations when trying to avoid the noise of an engine brake. Quote Link to comment Share on other sites More sharing options...
Glensts Posted October 31, 2021 Share Posted October 31, 2021 All our 97 ch have them. They’re electronic engines. The solenoid will be on the passenger side inside the frame rail behind front tire. On our Jake switch, 1 was both heads and position 2 was both heads and butterfly. Worked better than nothing but not great. Quote Link to comment Share on other sites More sharing options...
msbulldog601 Posted October 31, 2021 Author Share Posted October 31, 2021 1 hour ago, Glensts said: All our 97 ch have them. They’re electronic engines. The solenoid will be on the passenger side inside the frame rail behind front tire. On our Jake switch, 1 was both heads and position 2 was both heads and butterfly. Worked better than nothing but not great. I Have an electrical pump(grey plug on the side) so would this make mine like yours? But I don’t have a switch on the dash I’ve had this truck since 2013 and never used an exhaust brake. I only found out about this because I decided to reroute my exhaust because it got damaged Quote Link to comment Share on other sites More sharing options...
Mark T Posted October 31, 2021 Share Posted October 31, 2021 Does your truck have an engine brake ? ( Jake Brake ) Quote Link to comment Share on other sites More sharing options...
msbulldog601 Posted October 31, 2021 Author Share Posted October 31, 2021 14 minutes ago, Mark T said: Does your truck have an engine brake ? ( Jake Brake ) I’m ashamed to say I looked today and I did see a button on the dash panel that says “engine brake” that I’ve never used since I had the truck so I don’t know if it works or not. Quote Link to comment Share on other sites More sharing options...
1965 Posted October 31, 2021 Share Posted October 31, 2021 Wow, had the truck for 8yrs.& never smashed all the buttons on the dash. I would’ve hit all of them in first 8 minutes! lol Quote Link to comment Share on other sites More sharing options...
Mark T Posted October 31, 2021 Share Posted October 31, 2021 (lol) well at least now it's making some sense . If it's a Jacobs (Jake Brake) there's not going to be any switch that says "exhaust brake" as mentioned by someone else here it was supposed to work with the engine brake switch . They were hot thing in that era . Only thing it ever stopped for me was the turbo's life. Quote Link to comment Share on other sites More sharing options...
Mark T Posted October 31, 2021 Share Posted October 31, 2021 1 minute ago, 1965 said: Wow, had the truck for 8yrs.& never smashed all the buttons on the dash. I would’ve hit all of them in first 8 minutes! lol Give'm a break.....takes a big man to own up to it (lol) 1 Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted October 31, 2021 Share Posted October 31, 2021 I have a switch on my dash thats not got a label and afraid to mess with it.Who know what it will do if i play with it. Quote glenn akers Link to comment Share on other sites More sharing options...
1965 Posted October 31, 2021 Share Posted October 31, 2021 I helped 2 guys when I was a kid farm, they bought a new to them 95JD combine. 40 miles from home & drove it with the variable speed in low because they wouldn’t see what that lever was. I remember the brother asking what that lever was & the other slapping his hand don’t fool with that. You should’ve seen the looks on there faces when the got home & pushed the lever to high!! 1 Quote Link to comment Share on other sites More sharing options...
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