75T Posted January 20, 2018 Share Posted January 20, 2018 What was the model designation for pre chassis mounted cooler? Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/ Share on other sites More sharing options...
j hancock Posted January 20, 2018 Share Posted January 20, 2018 88 model designation ETAZ 677 engine stamping Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-390125 Share on other sites More sharing options...
terry Posted January 20, 2018 Share Posted January 20, 2018 Was that 2 valve 350 with the tip turbo made only a couple of years, don't remember seeing a lot of them? terry Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-390128 Share on other sites More sharing options...
j hancock Posted January 20, 2018 Share Posted January 20, 2018 Seems that way. Then the 4 valve 350's were out. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-390129 Share on other sites More sharing options...
75T Posted January 20, 2018 Author Share Posted January 20, 2018 Yes that is the engine model ( ETAZ -673-----) something , I'M wondering about. Thanks in advance. Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-390132 Share on other sites More sharing options...
j hancock Posted January 20, 2018 Share Posted January 20, 2018 An ETAZ 673A is a 315-320 HP Thermodyne 300 Plus. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-390133 Share on other sites More sharing options...
Rob Posted March 12, 2018 Share Posted March 12, 2018 (edited) I have an E6-350 from an 82 "Cruiseliner" and it had a chassis mount charge air cooler. This is slated for my 58 B-61 and runs well. Had an 81 R model that was a 350hp ETAZ-673 something with the water cooled tip turbin setup. I still have the engine but it was knocking in the lower end. I'll have to look at the block for the full set of numbers. Forgot youz guys like photos so here are a few from long ago of my 58 B-61. It still resides in the back of the shop. The photos are quite old but still have it. Edited March 12, 2018 by Rob 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-393971 Share on other sites More sharing options...
75T Posted March 12, 2018 Author Share Posted March 12, 2018 (edited) Thanks for the update on the model number. Have you thought about oil filter to steering box clearance. Possibly go back to 2 filters? By the way what's the serial number, Dad's '57 B-61T-15659, is yours close. Edited March 12, 2018 by 75T Add more comments Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-393978 Share on other sites More sharing options...
Rob Posted March 12, 2018 Share Posted March 12, 2018 I have a 57 also. I'll dig out the titles and post the numbers. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-393979 Share on other sites More sharing options...
Rob Posted March 12, 2018 Share Posted March 12, 2018 The 1958 is B61ST17759, and the 1957 is B61T12146. I'm probably going to go to a two filter setup but utilize a later model hydraulic steering gear setup. I have several slip and splines from other trucks so will fabricate a steering shaft to the gear. Neither truck currently has power steering and are all original. I've built a "chin mount" charge air cooler to breath through the front bumper for the E6-350 to be installed into the 58, and have a 300+ with engine mounted charge air cooler, (tip turbin) going into the 57 truck. Both trucks will be modern in driveline to keep up with today's traffic. Little of the work so far on the 57: Not much of a "Dupont Overhaul" type guy myself, everything under that truck is either freshly rebuilt properly, or new. Still need to plumb for air but the truck drives with front brakes only..... 3.70 gears and a current double over tri-plex on tall rubber would get it down the road pretty good but this truck is to replace the trusty, yet crusty old Dodge one ton so will be swapped to a single stick 10, or 13 speed trans. 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-393980 Share on other sites More sharing options...
Rob Posted March 13, 2018 Share Posted March 13, 2018 This is an ETAZ673A, (300+) in my white R model. This engine is slated for the 57 B-61 I posted photos of. The old R model is a good truck but many of it's parts are going to be used for donorship into others. The engine is spoken for as are the 3.87 Mack rears which will probably wind up in my 62 B-67ST. 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394021 Share on other sites More sharing options...
Outbehindthebarn Posted March 13, 2018 Share Posted March 13, 2018 Were all tip turbine's two valve? I've seen that set-up in hard nosed Macks into the late 80's... but the two valve was discontinued with the e6 or was it? Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394024 Share on other sites More sharing options...
Rob Posted March 13, 2018 Share Posted March 13, 2018 I don't know for sure. The four valve E6 engines were coming out in the early 1980's but I've not seen a tip turbin setup myself past early 1982 as the move to chassis mount charge air coolers was going forward. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394026 Share on other sites More sharing options...
j hancock Posted March 13, 2018 Share Posted March 13, 2018 The two valve continued to be used in DM's into the late 80's with the tip turbine because the steel hard nose wasn't able to accommodate the chassis mounted air cooler (CMCAC). In 1988, the DM-690 was fitted with the CMCAC. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394027 Share on other sites More sharing options...
h67st Posted March 13, 2018 Share Posted March 13, 2018 21 hours ago, Rob said: The 1958 is B61ST17759, and the 1957 is B61T12146. I'm probably going to go to a two filter setup but utilize a later model hydraulic steering gear setup. I have several slip and splines from other trucks so will fabricate a steering shaft to the gear. Neither truck currently has power steering and are all original. I've built a "chin mount" charge air cooler to breath through the front bumper for the E6-350 to be installed into the 58, and have a 300+ with engine mounted charge air cooler, (tip turbin) going into the 57 truck. Both trucks will be modern in driveline to keep up with today's traffic. Little of the work so far on the 57: Not much of a "Dupont Overhaul" type guy myself, everything under that truck is either freshly rebuilt properly, or new. Still need to plumb for air but the truck drives with front brakes only..... 3.70 gears and a current double over tri-plex on tall rubber would get it down the road pretty good but this truck is to replace the trusty, yet crusty old Dodge one ton so will be swapped to a single stick 10, or 13 speed trans. I like your philosophy on the Dupont overhauls. What was welded to the back of the cab? Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394032 Share on other sites More sharing options...
Rob Posted March 13, 2018 Share Posted March 13, 2018 The cab was cut out rectangular for a crawl through many years ago. I welded in a new back panel to return to the original style rear window. This truck is to be my "everyday" driver. The current one ton Dodge is falling apart from rust. A few from back when my brains worked for this kind of crap: Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394035 Share on other sites More sharing options...
Rob Posted March 13, 2018 Share Posted March 13, 2018 DM series were never popular around here except with garbage packers and mixer trucks. Dump trucks for some reason were either R models, or RD models but this was into the early 80's best I remember when I left spinning wrenches and busting knuckles full time. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394036 Share on other sites More sharing options...
Lmackattack Posted March 13, 2018 Share Posted March 13, 2018 4 hours ago, Outbehindthebarn said: Were all tip turbine's two valve? I've seen that set-up in hard nosed Macks into the late 80's... but the two valve was discontinued with the e6 or was it? from what I recall yes. The most common were in 285 and 315hp. however there were some very early 300 and 350 ratings with the water and air side mount cooler. I have yet to see one of these but many discussions on them coming out just before the front mount intercooling Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394040 Share on other sites More sharing options...
Outbehindthebarn Posted March 13, 2018 Share Posted March 13, 2018 This is supposedly an '87 tip turbine DM. Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394044 Share on other sites More sharing options...
Lmackattack Posted March 13, 2018 Share Posted March 13, 2018 that has the air and water charge cooler you can see the upper section has the water passage. here is a pic of one up close 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394050 Share on other sites More sharing options...
j hancock Posted March 13, 2018 Share Posted March 13, 2018 Has the look of a DM. Big frame and a DM style fuel tank. Can you get the engine number? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394052 Share on other sites More sharing options...
Outbehindthebarn Posted March 13, 2018 Share Posted March 13, 2018 (edited) 31 minutes ago, j hancock said: Has the look of a DM. Big frame and a DM style fuel tank. Can you get the engine number? Its not local, can you tell me where to have the seller look?.... and, what's that rig worth?... as pictured The 6 speed is already sold. I always forget which pump went with which engine.. the Maxidyne's had one and the 300+, 350's had another.... Edited March 13, 2018 by Outbehindthebarn Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394054 Share on other sites More sharing options...
j hancock Posted March 13, 2018 Share Posted March 13, 2018 If the sheet metal data tag is missing from the pass. side of the block, the engine code is stamped into the top of the timing gear case in front of the injection pump. It's worth? Depends. Does it run? How well was it wrapped up? Did water get in and freeze? Why was it taken out of service? How many hours? It is 2,000 lbs. What is the price of scrap? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394057 Share on other sites More sharing options...
Lmackattack Posted March 13, 2018 Share Posted March 13, 2018 14 hours ago, Rob said: This is an ETAZ673A, (300+) in my white R model. This engine is slated for the 57 B-61 I posted photos of. The old R model is a good truck but many of it's parts are going to be used for donorship into others. The engine is spoken for as are the 3.87 Mack rears which will probably wind up in my 62 B-67ST. Rob I was under the asumption that all 300+ were of air and water charge cooled. I see yours is just air to air Quote Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394058 Share on other sites More sharing options...
Rob Posted March 13, 2018 Share Posted March 13, 2018 I think the air/water setup came out in 1981 or 1982. This R model is a 1980 and the engine is original to the chassis. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/52262-350-2-valve/#findComment-394059 Share on other sites More sharing options...
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