Flat 6 in a 1935 B series Mack

[LFD1935]

I need all of your knowledge, well because this is not my strength. Short story, 1935 B series Mack Fire Truck with a flat 6. Engine is not original to the truck. We ran a compression test and the #3 cylinder is junk, looking in through the plug hole we can see the piston is cracked.  We are not sure of the engine, some say its a 36, others say its a 43. Markings on the bottom end are M 6(or maybe S) 00A602X. On the top it looks like 827 56. Trying to figure out where to go from here. We are a non profit with limited funds. I appreciate any info and suggestions you all may have. 

Thanks.

Compression Results front to back. 100, 92, 15, 80, 98, 78.   Verified #3 with a second gauge. 

 

[j hancock]

M6 sounds like a Continental Engine.  

When looking at the left side of the engine, there should be a machined pad with numbers stamp near the front of the block just below the head.  Check to see if you can get the numbers.  Example: white circle in picture.

There are M6253, M6271, M6290, M6330 engines.

[LFD1935]

1 hour ago, j hancock said:

M6 sounds like a Continental Engine.  

When looking at the left side of the engine, there should be a machined pad with numbers stamp near the front of the block just below the head.  Check to see if you can get the numbers.  Example: white circle in picture.

There are M6253, M6271, M6290, M6330 engines.

 

Found it EN 2710-2184

 

[j hancock]

OK.  A Mack EN-271 engine built by Continental (M6271).

Monte's or CIP may be able to help with a piston.

http://montesequipment.com/products/

http://www.continentalengineparts.net/

[LFD1935]

15 hours ago, j hancock said:

OK.  A Mack EN-271 engine built by Continental (M6271).

Monte's or CIP may be able to help with a piston.

http://montesequipment.com/products/

http://www.continentalengineparts.net/

Jim, do you know of they would have a head gasket? If not any suggestions? 

 

Thanks

[j hancock]

They may have the gasket or you can check with Olson Gaskets.    

http://www.olsonsgaskets.com/

Possibility that Fel Pro may have a head gasket.  Fel Pro has them for the smaller Continentals.  A good quality, old school parts store or machine shop would be able to get you a Fel Pro gasket if it is available.   

[terry]

54 minutes ago, j hancock said:

They may have the gasket or you can check with Olson Gaskets.    

http://www.olsonsgaskets.com/

Possibility that Fel Pro may have a head gasket.  Fel Pro has them for the smaller Continentals.  A good quality, old school parts store or machine shop would be able to get you a Fel Pro gasket if it is available.   

Them old school parts and machine shops are getting hard to find!!

[j hancock]

Ain't that the truth!

[66dc75]

You might have some luck with Then and Now auto parts in Weymouth

 

http://www.then-now-auto.com/

[mrgumby]

Worth a phone call http://www.continentalengineparts.net/