Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 have seen many 237 and and 250's with worn valves bad from overexcessive jake brake use actually. I dunno what the different numbers meant in later years. have seen Mack drop the N and just put ET675 also. im with Mike, someone put a side mounted cooler off a 285 or 300+ on a 237 block.isnt it the same block??wat info tells you that's wat it is?? This is all I'm trying to understand ?? Still confused?? Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-204780 Share on other sites More sharing options...
Maddog13407 Posted September 9, 2013 Share Posted September 9, 2013 they are all the same block 673-350, after a while they put oil squirters in to cool the pistons. this was done to the later 673 turbos and the 675's or 237's. after that it was mostly pump, timing and air flow. like any engine to build hp you need air, cool air. mack did that with the side mounted cooler and then the front mounted cooler. sounds like you have a mutt engine froma few different ones. if it runs good, keep your hands out of it and leave the pump alone, youll be better off. you go turnin the fuel up on a well used engine and youll have a pile of junk. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-204800 Share on other sites More sharing options...
Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 I'm still in a grey area?? And I do appreciate everyone's feedback and knowledge on this subject ... I thank you all!!! A lot of feedback and I'm trying to understand is all..the motor pulls good n strong... It is wat it is.. My question??? Where in the # ETZB675 gets translated that its a 237 and someone put a side mt cooler??im trying to understand that for head knowledge.. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-204873 Share on other sites More sharing options...
j hancock Posted September 9, 2013 Share Posted September 9, 2013 675 = 237 hp. 237 never had a charge air cooler on them.676 = 285 hp. Did have charge air cooler. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-204915 Share on other sites More sharing options...
Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 Thank you so much!! It's wat I wanted to understand !!! Thank you thank you Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-204941 Share on other sites More sharing options...
RFCDrum Posted September 9, 2013 Share Posted September 9, 2013 So if somebody added the charge air cooler to her it becomes a 285 I'm assuming. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205011 Share on other sites More sharing options...
thomastractorsvc Posted September 9, 2013 Share Posted September 9, 2013 Thank you so much!! It's wat I wanted to understand !!! Thank you thank youI think the problem is with the H key on your computer, start using it and see if that helps?? 1 Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205016 Share on other sites More sharing options...
Maddog13407 Posted September 9, 2013 Share Posted September 9, 2013 I think the pump needs adjusting when you add the side mounted intercooler to make a 237 a 285 Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205017 Share on other sites More sharing options...
Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 I think the problem is with the H key on your computer, start using it and see if that helps??wat is an h key?? Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205019 Share on other sites More sharing options...
thomastractorsvc Posted September 9, 2013 Share Posted September 9, 2013 Check your manual, but the last time I messed with mine it was near the G and J keys, When I use it I don't get any decal noise out of the air intake but sometimes the fan turns on. I think the fan turning on is unrelated to the H key though. 1 Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205021 Share on other sites More sharing options...
Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 Check your manual, but the last time I messed with mine it was near the G and J keys, When I use it I don't get any decal noise out of the air intake but sometimes the fan turns on. I think the fan turning on is unrelated to the H key though.did I miss something here?? Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205024 Share on other sites More sharing options...
RFCDrum Posted September 9, 2013 Share Posted September 9, 2013 He he the H key. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205025 Share on other sites More sharing options...
Joeyk3d Posted September 9, 2013 Author Share Posted September 9, 2013 He he the H key. oh did I miss something funny Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205029 Share on other sites More sharing options...
RFCDrum Posted September 10, 2013 Share Posted September 10, 2013 Every time you typed what you forgot the h. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205094 Share on other sites More sharing options...
Joeyk3d Posted September 10, 2013 Author Share Posted September 10, 2013 Well I hope my punctuation and my sentence structures are ok ... Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205175 Share on other sites More sharing options...
j hancock Posted September 10, 2013 Share Posted September 10, 2013 Yah! You should be prefect like the rest of us.... Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205189 Share on other sites More sharing options...
RFCDrum Posted September 12, 2013 Share Posted September 12, 2013 Yes we are all a little perfect. Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205718 Share on other sites More sharing options...
Joeyk3d Posted September 13, 2013 Author Share Posted September 13, 2013 Well you guys must be rubbing off.. You got me checking my spelling!!! Haha!! Perfect hmm?? I don't know!! Bunch of cool guys that know their Mack's...definitely!!!!! Quote Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205932 Share on other sites More sharing options...
Green Dash Posted September 13, 2013 Share Posted September 13, 2013 Well you guys must be rubbing off.. You got me checking my spelling!!! Haha!! Perfect hmm?? I don't know!! Bunch of cool guys that know their Mack's...definitely!!!!!Wat he said! 1 Quote Jim Link to comment https://www.bigmacktrucks.com/topic/32685-mack-2-valve-tip-turbine/page/3/#findComment-205935 Share on other sites More sharing options...
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