Licensed to kill Posted November 8 Share Posted November 8 Going to add a boost gauge to my truck (1980 , 350 econodyne) Plan is to put a collar in the crossover pipe from the turbo to the top turbine but before I do that thought I would ask if there is provisions somewhere for that already that I don’t see. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/ Share on other sites More sharing options...
MACKS Posted November 9 Share Posted November 9 I might be wrong but I don’t think your gonna see to much boost on a tip turbine,it basically just blows air thru the air box unrestricted unless it’s plugged up with dust,maybe that’s what your looking for,when to clean it out.. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561603 Share on other sites More sharing options...
JoeH Posted November 9 Share Posted November 9 Tip turbine doesn't make boost, it runs off of excess boost air though. Use a port on your intake manifold for boost gauge line. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561606 Share on other sites More sharing options...
Licensed to kill Posted November 9 Author Share Posted November 9 13 hours ago, JoeH said: Use a port on your intake manifold for boost gauge line. Yes, that is my question, is there a port somewhere already that I have not noticed or do I have to add one. It appears that the title of this thread has caused some confusion. I only mentioned the tip turbine because, of course, the entire intake system between the turbo and head is unique to this system and it is so where in that system that a port will be if one already exists. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561615 Share on other sites More sharing options...
Licensed to kill Posted November 9 Author Share Posted November 9 I have a port on the intake with some sort of gizmo coming off it. No idea what that gizmo is or is supposed to do???? Idea? Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561618 Share on other sites More sharing options...
mowerman Posted November 9 Share Posted November 9 hell,,,im no help...i never really knew,what they did...bob Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561620 Share on other sites More sharing options...
Brocky Posted November 9 Share Posted November 9 No Ideas on the gizmo!!!!! Does your air compressor feed from the intake manifold???? It looks like you could use either??? Quote Brocky Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561621 Share on other sites More sharing options...
Geoff Weeks Posted November 9 Share Posted November 9 Looks like a solenoid valve for an air fan clutch? no idea why that is there. There looks to be another port at the next intake runner as well. Has a 90 deg fitting that is cut off at the edge of the picture. Any of them would be a place for a boost gauge. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561622 Share on other sites More sharing options...
Popular Post Mark T Posted November 9 Popular Post Share Posted November 9 That's the reversing relay for the puff limiter if I'm not mistaken. Any port that's already in the intake manifold will work. Not a good idea to have too much brass as it tends to crack. Looks like there's no puff limiter on it the way it is, use that port and remove the relay ??? 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561623 Share on other sites More sharing options...
Geoff Weeks Posted November 9 Share Posted November 9 Not to up on that era Mack stuff, but I always liked the Tip-Turbine set-up. A better solution than Cummins low-flow cooling, for the same problem. How do you aftercool better than engine coolant can? How do you do it and fit the engine into current vehicles without re-designing the front end? Cat didn't try, Cummins tried to "super-cool" the coolant before it entered the engine, Mack decided to pull air from outside the hood, to pass through an air to air inside the hood. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561624 Share on other sites More sharing options...
Licensed to kill Posted November 9 Author Share Posted November 9 I took that “gizmo” off and searched the part number and, yes, it is a puff limiter (whatever that is). I’ll pull the boost signal from that port. Thanks to all for the replies. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561625 Share on other sites More sharing options...
Popular Post MACKS Posted November 9 Popular Post Share Posted November 9 25 minutes ago, Licensed to kill said: I took that “gizmo” off and searched the part number and, yes, it is a puff limiter (whatever that is). I’ll pull the boost signal from that port. Thanks to all for the replies. The puff limiter keeps the fuel restricted untill the engine gets boost,stops all that black smoke from to much fuel and not enough air.. 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561626 Share on other sites More sharing options...
mrsmackpaul Posted November 9 Share Posted November 9 Also stops the diesel washing the oil fron the bores and extends engine life It does make them less revy and slower to respond until boost developed, however the benefits out way the apparent increase in performance Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561629 Share on other sites More sharing options...
Mark T Posted November 9 Share Posted November 9 If the puff limiter works and is shimmed correctly, it should have minimal smoke and run about as good as it's gonna run. That "gizmo" would have got air when the parking brakes were released and then it would regulate the rack's travel according to manifold pressure. Over fueling is never good. Looks cool when you're 23 or so..... then when you pay for it a couple times, not so cool. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561631 Share on other sites More sharing options...
JoeH Posted November 10 Share Posted November 10 Correct on reversing relay for the puff limiter, which appears to be disabled. You can pull it off and use that port, be careful you don't break the fitting. You also have another port in the bottom right of the picture it appears. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561645 Share on other sites More sharing options...
cruiseliner64 Posted November 10 Share Posted November 10 The puff limiter is disabled on our Cruiseliner because its leaking air badly down at the injector pump.We are looking for one but no luck finding one yet.Can they be repaired? Or is it just a throw away part? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561647 Share on other sites More sharing options...
JoeH Posted November 10 Share Posted November 10 We ran them deleted on our trucks for years. You'll be fine without it. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561648 Share on other sites More sharing options...
Mark T Posted November 10 Share Posted November 10 24 minutes ago, JoeH said: We ran them deleted on our trucks for years. You'll be fine without it. If only I knew how to post that thing of that thumberg girl saying " how dare you " 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561649 Share on other sites More sharing options...
JoeH Posted November 10 Share Posted November 10 When they break and Mack doesn't sell the parts anymore what're you gonna do? 🥳🥳 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561651 Share on other sites More sharing options...
MACKS Posted November 10 Share Posted November 10 This thread makes no sense to me is he talking about the tip turbine or the main engine turbo? Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561652 Share on other sites More sharing options...
Mark T Posted November 10 Share Posted November 10 I think he's trying to confirm the easiest place to get into the intake for a manifold pressure gauge. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561654 Share on other sites More sharing options...
BOBWhite Posted November 10 Share Posted November 10 The boosted intake air is what he is trying to measure, it just so happens to be a tip turbine engine. Although I wonder how much pressure is bled off from the turbo for the tip turbine system. In my head I've always thought the puff limiter was for drivers who didn't own the truck. When you pay the bills you are more conscious about what is coming out the stack and what's going past the rings into your crankcase. Wait until you feel the turbo come up then start adding fuel Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561655 Share on other sites More sharing options...
Geoff Weeks Posted November 10 Share Posted November 10 1 hour ago, BOBWhite said: Wait until you feel the turbo come up then start adding fuel If done well, there is no disadvantage to making automatic. Most Mfg did, some better than others. I never had a problem with either Cummins (AFC) or Cats method. Earlier methods by all mfg needed some work. I wouldn't want to have to monitor the boost at all times to have a good running engine. I can think of no advantage to not having the system take care of itself. All of them were adjustable if you knew how. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561662 Share on other sites More sharing options...
Mark T Posted November 10 Share Posted November 10 If I remeber , Some of the extended range transmissions also had a signal from the transmission when you had it in the lower gears so it wouldn't let it go into full fuel. Like when it was in low and reverse in a six speed. Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561663 Share on other sites More sharing options...
Licensed to kill Posted November 10 Author Share Posted November 10 2 hours ago, MACKS said: This thread makes no sense to me is he talking about the tip turbine or the main engine turbo? I apologize for the confusion. Yesterday I posted “It appears that the title of this thread has caused some confusion. I only mentioned the tip turbine because, of course, the entire intake system between the turbo and head is unique to this system and it is so where in that system that a port will be if one already exists.” To try to clear it up but let me say, this is not about the tip turbine it is about finding a good signal source for a boost gauge. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74727-tip-turbine-boost/#findComment-561665 Share on other sites More sharing options...
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