880joe Posted March 5, 2020 Share Posted March 5, 2020 I have a 99 CH with a 355/380 just replaced heads and put on the switchblade turbo,full tilt exhaust manifold and rochester 2.5 injectors now I'm only getting alot of smoke and only about 20lbs of boost. Before the head job I was running full tilt manifold 75hp K&S injectors and a 460 non waste gated turbo and would get some smoke and around 30lbs of boost. Any ideas or thoughts where I went wrong Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/ Share on other sites More sharing options...
OldRedMack Posted March 5, 2020 Share Posted March 5, 2020 Have you pressure checked the CAC and intake manifold? Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444471 Share on other sites More sharing options...
880joe Posted March 5, 2020 Author Share Posted March 5, 2020 Not yet going to do that tomorrow Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444473 Share on other sites More sharing options...
fjh Posted March 5, 2020 Share Posted March 5, 2020 Yup its not getting air if you got smoke check the Intake system for leaks! Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444485 Share on other sites More sharing options...
880joe Posted March 7, 2020 Author Share Posted March 7, 2020 Found 2 holes in the fresh air line from intake to air compressor,charge air cooler tested good. Not put the new line on yet but the holes on the old appear to have been there for a while so not sure that that is all my issue. Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444628 Share on other sites More sharing options...
880joe Posted March 7, 2020 Author Share Posted March 7, 2020 New line put on no boost leaks now,gauge checked for accuracy and still only about 22lbs of boost Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444681 Share on other sites More sharing options...
880joe Posted March 7, 2020 Author Share Posted March 7, 2020 Problem fixed Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444696 Share on other sites More sharing options...
fjh Posted March 8, 2020 Share Posted March 8, 2020 So what fixed it Joe’ Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444698 Share on other sites More sharing options...
Jamkar Posted March 8, 2020 Share Posted March 8, 2020 Cmon Joe, ya can’t do that to us... Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444699 Share on other sites More sharing options...
880joe Posted March 8, 2020 Author Share Posted March 8, 2020 Took the switchblade turbo off put my old one back on now getting about 34lbs of boost Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444712 Share on other sites More sharing options...
Freightrain Posted March 8, 2020 Share Posted March 8, 2020 Sounds like switchblade wasn't working? Or incorrectly sized? I'd be curious to find out. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444715 Share on other sites More sharing options...
brettj3876 Posted March 8, 2020 Share Posted March 8, 2020 Yea I'd like to know also? Haven't heard much on the switch blade as far as macks go you're the 1st. Only other thing i would suggest is the 171702 (bw s475) we run that turbo with 42 psi. Bit leggy on the bottom but once she spools it's off to the races with rochester's stg 2 on 93 vmac 1. Soon to be fully mech Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444728 Share on other sites More sharing options...
880joe Posted March 8, 2020 Author Share Posted March 8, 2020 Not sure why it didn't work. It's a BW 171702 turbo that starts out with a smaller than 115 housing then is supposed to open up to the 132 at 8lbs of boost. Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444729 Share on other sites More sharing options...
Mack Technician Posted March 8, 2020 Share Posted March 8, 2020 Hindsight’s 20/20 so I’m not going to be critical esp since pioneering new stuff is risky. Wondering if the “sling-blade” turbo isn’t a candidate for some infomercial like the George Foreman grill, VibraRazer and Chia pet. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444746 Share on other sites More sharing options...
OldRedMack Posted March 8, 2020 Share Posted March 8, 2020 11 hours ago, 880joe said: Not sure why it didn't work. It's a BW 171702 turbo that starts out with a smaller than 115 housing then is supposed to open up to the 132 at 8lbs of boost. Opening all the way at only 8psi seems like the problem in my mind at least. Seems like it shouldn't go full on till 20-25psi. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-444772 Share on other sites More sharing options...
880joe Posted July 31, 2020 Author Share Posted July 31, 2020 The guys at Switchblade Turbo built me a new turbo supposed to be correct size. They said the other one was to big still don't know why the 171702 Borg Warner was to big for my engine when I've heard of numorus others running that same set up. Will update after I get it put on and see how it performs. Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-457234 Share on other sites More sharing options...
Freightrain Posted July 31, 2020 Share Posted July 31, 2020 (edited) Glad to hear they are taking care of it. Hope the next version works well. There is a Youtube channel (Jpaydirt)that has put a couple of those turbos on his Cat powered KW and 1693 powered equipment and really likes them. Edited July 31, 2020 by Freightrain 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-457239 Share on other sites More sharing options...
OldRedMack Posted October 22, 2020 Share Posted October 22, 2020 Any news on the 2nd switchblade? Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-462797 Share on other sites More sharing options...
fjh Posted October 22, 2020 Share Posted October 22, 2020 second that ? Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-462813 Share on other sites More sharing options...
880joe Posted October 22, 2020 Author Share Posted October 22, 2020 Not took the time to put it on and try it will report on it when I do 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-462838 Share on other sites More sharing options...
Bigjohn4300 Posted April 14, 2022 Share Posted April 14, 2022 880Joe, did you ever get the switchblade on and working? Im curious about one 2252666350 On 3/11/2022 at 6:35 PM, Onyx610 said: Start with getting an air filter and a filter kit (should be done anyway) and then put a load on it and see what happens. If you still have the same results pressure test the charge air system and check for exhaust leaks. Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-495249 Share on other sites More sharing options...
880joe Posted April 14, 2022 Author Share Posted April 14, 2022 I never did put the new replacement on and try it. It's just a 2500 dollar dirt dobbers home at the moment. I need to get it put on and try it some day when I have a short haul so I'm not changing a turbo in a truckstop parking lot if it doesn't work again. Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-495273 Share on other sites More sharing options...
Bigjohn4300 Posted April 14, 2022 Share Posted April 14, 2022 I’ve been contemplating trying one on my granite, what size turbo is yours based off of? I have a S467 on mine and it takes 2 gears from a stop to get it spooled up, 3rd gets me high teens, 4th gets me mid 30s. I really want to try one, but kinda leery now, your the only one that ive heard of with one on a Mack (225)266-6350 talk/text if you get time one day Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-495277 Share on other sites More sharing options...
Bigjohn4300 Posted April 14, 2022 Share Posted April 14, 2022 Let me try it, i run local, ill rent it and see how it does! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/61284-low-boost-with-switchblade-turbo/#findComment-495278 Share on other sites More sharing options...
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