Popular Post Full Floater Posted March 30 Author Popular Post Share Posted March 30 2 hours ago, BOBWhite said: I couldn't find anything about a rack buffer either. Would it comprise of an extra spring or something? Every Mack I've been around with an Ambac pump surges to some degree. I would imagine so. They also did some "improvements" to the flyweights. Not sure what. But, the long and short of it is, throw some $ at these pumps and the surging can be calmed down. 3 Quote Link to comment Share on other sites More sharing options...
Vladislav Posted March 30 Share Posted March 30 12 hours ago, Full Floater said: I would imagine so. They also did some "improvements" to the flyweights. Not sure what. But, the long and short of it is, throw some $ at these pumps and the surging can be calmed down. In my case I suppose I would be the only person in a pump shop to explain what to do with "that piece of old junk". So try to scratch up a few bits of info. Would be also interesting to learn how to increase the maximum PRM setting from 1900 to 2300 what was told as a safe figure. I sure don't pretend on you to describe that. Just thoughts on the matter. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
Mackman87 Posted June 17 Share Posted June 17 On 3/30/2024 at 12:30 AM, Full Floater said: I would imagine so. They also did some "improvements" to the flyweights. Not sure what. But, the long and short of it is, throw some $ at these pumps and the surging can be calmed down. Just curious, what pump shop did you use. I have a 350 that surges when cruising and needs some pump work. 1 Quote Link to comment Share on other sites More sharing options...
67RModel Posted June 17 Share Posted June 17 There was an old school pump and injection shop in New Castle, PA called IB Diesel. Sadly he retired and closed up about a year ago. He couldn't find anyone who wanted to buy him out and continue the business. He was an ex Mack mechanic and service writer for the local dealership in the 70s and 80s then went off on his own in the 80s I think. A real wizard with the Mack engines and pumps. He knew everything about Macks. He worked over the pump on the 237 transplant in my B81 and it runs amazing. Area Diesel Service in Illinois seems to be the people to go to nowadays. They have tremendous exposure online / social media and seem to know everything about any injection pump. They seem to be able to get parts for just about anything and anybody who uses them speaks very highly of them. Diesel Specialists for Powerful Diesel Solutions | Area Diesel Service 1 Quote Link to comment Share on other sites More sharing options...
Full Floater Posted June 17 Author Share Posted June 17 40 minutes ago, Mackman87 said: Just curious, what pump shop did you use. I have a 350 that surges when cruising and needs some pump work. I used Prince George Fuel Injection, in B.C Canada. I won't hesitate to use them again. Quote Link to comment Share on other sites More sharing options...
The Heinz Posted June 17 Share Posted June 17 4 hours ago, Mackman87 said: Just curious, what pump shop did you use. I have a 350 that surges when cruising and needs some pump work. Depends how close you are to Knoxville, TN. I've been told by friends in the area that City Diesel is exceptional at anything diesel, especially pump and injector rebuilds. Quote Link to comment Share on other sites More sharing options...
Mackman87 Posted June 18 Share Posted June 18 21 hours ago, The Heinz said: Depends how close you are to Knoxville, TN. I've been told by friends in the area that City Diesel is exceptional at anything diesel, especially pump and injector rebuilds. I’m about 1:45min actually! That’s good news to hear. Quote Link to comment Share on other sites More sharing options...
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