brickhouse15 Posted March 26, 2018 Share Posted March 26, 2018 Good evening, I’ve looked into this quite a bit and haven’t found much info...was there ever an engine brake produces for the END673 non turbo motor? If so, is it still currently available? Thanks! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/ Share on other sites More sharing options...
Freightrain Posted March 26, 2018 Share Posted March 26, 2018 Yes, there is a brake. I just put a Jacob brake on my ENDT675(237). Same thing as non turbo 673(all 2 valve motors). You can get parts for them, though some pieces are NLA for early engines(like my 237). It can very pricey to gather the parts up. I got my jakes from a fellow on BMT and got rebuild kits from local Mack dealer. I remember Barry selling TecBrakes? (same as Jacob), but can't find anything about them. He sent me the file with all the information years ago, but can't seem to find it right now. I've heard that a jake on a Mack is marginal, but after just playing around with mine last week for the first time...it works pretty well. I can't wait to put a trailer behind it next month. 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395152 Share on other sites More sharing options...
Hobert62 Posted March 26, 2018 Share Posted March 26, 2018 Hmmmm? I bet that would give my truck a real bark through its 2 big stacks. How much did it raise your valve cover? Not much room with mine wedged 1/3rd of the way under the cab. Quote Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395171 Share on other sites More sharing options...
Mike Stormo Posted March 26, 2018 Share Posted March 26, 2018 I just put a jake on my 673 no turbo engine last week. I took it from a B61 with a turbo 673 that I bought for parts. The jake extensions raised the valve covers about two inches. I haven't taken my B53 out for a test drive yet but I did drive the parts truck and I thought it held back very well. The parts truck also had a Williams exhaust brake but I did not try it on the way home. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395172 Share on other sites More sharing options...
Hobert62 Posted March 26, 2018 Share Posted March 26, 2018 1 hour ago, Mike Stormo said: I just put a jake on my 673 no turbo engine last week. I took it from a B61 with a turbo 673 that I bought for parts. The jake extensions raised the valve covers about two inches. I haven't taken my B53 out for a test drive yet but I did drive the parts truck and I thought it held back very well. The parts truck also had a Williams exhaust brake but I did not try it on the way home. A B53 is a short hood like my B67 with the doghouse in the cab isn't it? Quote Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395173 Share on other sites More sharing options...
57 bcr Posted March 26, 2018 Share Posted March 26, 2018 2 hours ago, Hobert62 said: A B53 is a short hood like my B67 with the doghouse in the cab isn't it? No. A B-53 has the same hood a B-61. A B-57 has the short hood like the B-67. Al 1 Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395179 Share on other sites More sharing options...
Freightrain Posted March 26, 2018 Share Posted March 26, 2018 7 hours ago, Hobert62 said: Hmmmm? I bet that would give my truck a real bark through its 2 big stacks. How much did it raise your valve cover? Not much room with mine wedged 1/3rd of the way under the cab. My straight pipes are 4". It sounds nice, but can't say what it sounds like passing on the road. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395189 Share on other sites More sharing options...
brickhouse15 Posted March 27, 2018 Author Share Posted March 27, 2018 Thanks everyone, just the information I was looking for. Quote Link to comment https://www.bigmacktrucks.com/topic/52924-end673-engine-brake/#findComment-395315 Share on other sites More sharing options...
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