terry

If you only have the one fuel filter, should be an arrow on top for fuel direction, intake is from the tank, discharge side goes to bottom of lift pump on side of engine.  Terry

Happy birthday bud! you have been a wealth of info. on here!    terry

Might get more interest with a few more pics and price.   terry

So they don't have fire ring head gasket for the 20 bolt gasket?

7 hours ago, Joey Mack said:

Yes My heads are correct..  it's not easy to find someone who knows how to cut the fire ring grooves in my area..  

Does it have the fire ring liners?

17 hours ago, Joey Mack said:

I have a 673 in my shop..  I had to change the pistons when I added a turbo..  So END-to an- ENDT...  I am not an E-6 Guru..  I just did some reading and asked a few people about the change over..  My new head gaskets have fire rings.  I wish I knew a lot more about these engines..  and when I finish this one, I will have to make a jig to mount it in, so I can start it up.  Thats going to be an effort.. 

Does your liners have the ridges for fire rings? and are the heads scored for the rings?   terry

12 hours ago, Freightrain said:

Plenty of guys put turbos on early 673s.  I don't think they do much beyond cleaning up the smoke a touch.  I'm curious as to the stock 673T for boost?  5-10#?  My 237 has 15#(love to have 20#).

I remember going through the same thoughts for my NA 673 20 yrs ago.  Glad I found a 237.  I didn't want the chance of hurting my good running 673.

I believe the biggest problem of putting turbos on the early engines was head gasket leaks, no fire rings.   terry

12 minutes ago, Joey Mack said:

🍻   

Now when it gets put back together, make sure you put a set of ''Twinkies'' in the lower boxes, on the ends of the springs..  Glad to hear you are getting it fixed.. jojo

Bet a lot of guys don’t know what your twinkie comment is!😂 terry

That taper leaf rear suspension is not very good, real soft, looks like a lot of rust jacking around the fifth wheel.  Terry

1 hour ago, 67RModel said:

Would it by chance have to do with a Hall Scott gasoline engine? There is that thread in the fire apparatus section of the gentleman with the twin B21 fire engines from the Seattle area and they both have Hall Scott engines in them. Maybe the 21 is a designation for that engine? 

I once owned a B421 , had that flathead mack gas engine, thy were either a 401 or 402 engine.    terry

16 hours ago, Joey Mack said:

What Terry????   got a question???    

No just the cost of all them "proper" tools!🤣

Wow!!  Terry

That’s an older one, rockwell front axle  and real early air cleaner set up.   Terry  sure a nice one for that early!

looks like that welded together tie rod needs replaced too!   terry

11 hours ago, Joey Mack said:

I just flat rate the builds.  E-7/E-Tech.  Pulled out is $4,000.00 / In-frame is $4,500.00....   ASET-C   $5,000.00..   Plus I come to you, so you can stand over my shoulder when I work  I take 50+ hrs.  I do a lot of measuring, and checking, and lots of note taking during tear down, and re-build...  

Isn't that annoying have people look over your shoulder while your working?    terry

On 2/22/2023 at 11:36 AM, mowerman said:

i always thought the frame on a gas job was thinner,is that true??? bob

Same frame.  Terry

Just listened to that video, had 237 engines with that exact sound, was a loose exhaust seat, I know it sounds crazy but I had one do that and it ran a long time, just never know how long!  Terry

I"m going to have to check some of my old manuals on the X107 fill spots, maybe i am getting mixed up with the older single counter shaft transmissions!   terry

1 hour ago, Full Floater said:

I did pull the fill plugs (both sides) and yes they both had metal particulate on them, along with the magnetic drain plug.   They all were magnetic. 

I found out that its a bit of a bugger to get fluid back into these things as the fill hose has to be shoved forward quite a bit in order to allow the oil to actually flow down into an opening, instead of splashing right back out of the fill hole.

If you try to fill up to plug on right side you will be way over filled.    terry  as mechohaulic said it has the trough for metal pieces.

1 hour ago, mechohaulic said:

if it's getting "an oil change (trans fluid)"   did you pull the side plug and check magnet for foreign objects == they still have magnets don't they ???? never did a tipping o=ring repair. darn doesn't that have to almost stand on it's ass/??

Depends on which o ring that needs repaired, Yeah the magnet is on the opposite side of fill plug   terry

1 hour ago, Full Floater said:

Thanks gents.

I'll try the silicone! 

If you don’t want to drain it, tip it up so gear oil is in the other end.   Terry

Some kind of old style relay valve? Is it plumbed up properly?   terry

3 hours ago, nam vet said:

Thanks for the response. So possibly the frame is not my problem. My b62 was originally built with an en464a gas engine. Over the years it was converted to a 673 but the installation wasn't 100% correct. Does anyone know if the 464a engine was shorter than the 673 diesel?  The 673 sits a couple of inches to far forward so the fan hits the rad and the crank balancer rubs the rad support

If the frame mounts on the side point towards the front, reverse sides and it might come out right.    terry

Can't you take a newer mack rear housing with a desired ratio and cut the mounting brackets off and weld on the needed brackets.   terry