LFD1935 Posted May 26, 2018 Share Posted May 26, 2018 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. Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/ Share on other sites More sharing options...
j hancock Posted May 27, 2018 Share Posted May 27, 2018 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. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399536 Share on other sites More sharing options...
LFD1935 Posted May 27, 2018 Author Share Posted May 27, 2018 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 Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399550 Share on other sites More sharing options...
j hancock Posted May 27, 2018 Share Posted May 27, 2018 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/ 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399565 Share on other sites More sharing options...
LFD1935 Posted May 28, 2018 Author Share Posted May 28, 2018 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 Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399593 Share on other sites More sharing options...
j hancock Posted May 28, 2018 Share Posted May 28, 2018 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. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399594 Share on other sites More sharing options...
terry Posted May 28, 2018 Share Posted May 28, 2018 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!! Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399597 Share on other sites More sharing options...
j hancock Posted May 28, 2018 Share Posted May 28, 2018 Ain't that the truth! Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399609 Share on other sites More sharing options...
66dc75 Posted May 28, 2018 Share Posted May 28, 2018 You might have some luck with Then and Now auto parts in Weymouth http://www.then-now-auto.com/ Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399622 Share on other sites More sharing options...
mrgumby Posted May 28, 2018 Share Posted May 28, 2018 Worth a phone call http://www.continentalengineparts.net/ Quote Link to comment https://www.bigmacktrucks.com/topic/53424-flat-6-in-a-1935-b-series-mack/#findComment-399626 Share on other sites More sharing options...
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