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Phil Bennett

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About Phil Bennett

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    Gear Jammer
  • Birthday 08/08/1959

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    Oxford, England

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  1. Hello to all, Update on trying to improve on low engine power output on 1970 R719 ENDT864 V8. Thanks for the many replies and suggestions. So far; New filters, fuel lines and fresh diesel. As advised, I've adjusted the pump stud by 1/4 turn clockwise (screwed 'in'), but no change. **Even after reading manual, I'm really not quite sure what this 'stud' adjustment does (see image) - any advice ? ** Fuel pump readings (no load) are from 15psi @ 600rpm to 31psi @ 2000rpm. Might go back to basic checks such as re-torque head nuts (weak point) rechecking cylinder compressions, valve clearances and injector spray. Plus check fuel pressure 'under load'. Other comments welcomed. Thanks Phil
  2. Hello Larry, Thanks for comment. In answer to your suggestion, "No", I do believe the linkage is working just fine. But I will double check tomorrow. Ironically I did have an issue with the linkage in that it was 'catching' on one of the exhaust clamps, but that was easily solved by loosening clamp and swivelling round. I am aware that the external 'arm linkage' (which is connected to the throttle rods) on the side of the pump is kinda 'spring loaded' (looks by design) to avoid overstraining said arm when throttle at full stretch. General consensus seems to be that the engine is running too lean (and that the turbos may be a little 'tired', though the lean fuels seems to be the first place to start. Understand I need to slightly adjust the stud (slacken lock nut first) by winding 'in' 1/4 of a turn... See image enclosed. Thanks Phil
  3. Rob,

    Many thanks for your comments.  All most helpfull along with other replies from BMT posters on this subject.

    Sure seems to be zooming in on a fuel (too lean) issue.  Will be checking that out. Engine does not smoke at all when warmed up - indeed when taking for the annual VOSA test* over here, it passes any emmisions checks no problem.

    *I have to take this 1970 Mack R719 for the same annual 'test' as, say, a 2018 Volvo / Scania / Merc / Daf, which include brake tests with a loaded trailer etc....It generally passes....

    BTW - seems that not many ENDT864 engines built for trucks. And the company who originally bought the truck I have (Campanella Corp of Rhode Island seemed to have had similar problems as those you made mention of. I assume no connection with them as you are too far away (too many miles and to the West of Rhodes Island ?)



    VOSA Testing Mack Loaded 800mb.jpg

    1. Rob


      Hi Phil;

      Nice looking truck there. Glad to see another one working still and being cared for. I am fond of the V8 Mack diesels myself but over here it was difficult to get parts back in the early 1970's for the ENDT-864 series. The 1970 and up ENDT-865 were easier by far. Not many on the site have been around long enough to have worked, or worked on one as they all but disappeared quickly in my area being replaced by either an inline six, or a later V8. Head gaskets along with the "PS" series of distributor injection pump were the main culprits. The cylinder heads just seemed to want to move around and scrub the gaskets out. I installed three sets into the engine I finally changed out over about a year and a half and the downtime was getting expensive. That engine was changed to a then new ENDT-676 and the problems were history.

      If you isolate down to an injection pump needing rebuilt and have trouble, let me know as I know a gent whom still works on the older stuff like that.


    2. Phil Bennett

      Phil Bennett



      Thanks for reply – I just happen to be at computer when message came through.

      ‘Yes’, those ‘faults’ of the engine sure seem to be common to anyone who has experience of them !

      I feel quite fortunate to have one that seems to work and run fine (albeit currently lacing in power to shift 32 tons at a reasonable pace…), and, despite long periods of inactivity, still starts on the button.  Always.

      I also managed to buy some Mack head gaskets as ‘spares’ quite a while ago.

      Likewise with the pump – bought a spare used one from Mike at Southeastern Diesel, Elm City, NC and he (Mike) is helpful with advice.  I also have been in touch with a chap over here who has worked on the PSM / PSJ pumps.  But always good to know of other folks who may be able to help out.  One good useful thing for the Internet, eh ?

      Mack is currently in Black wrap after being used for a couple of films – does appear (briefly) in 2019 Bohemian ddd Rhapsody fim.



      Mack 2mb less 6.JPG

  4. Hello, Wonder if anyone out there can offer any views / comments on my 'problem' ? I have a 1970 R719 with the ENDT864 twin turbo V8 fitted, all pretty original. Understand that engine should deliver around 300hp, but was not Macks finest and had 'issues'... My Problem: Thought not used for everyday haulage (just shows), if I pull a ballasted 20' container (32 tons), I struggle to get much 'get up and go' over 35mph. As if the 300 hp is just not there. On a slight downhill road, it can (and will) do 50 mph. But a slight incline, not really. Compression fine. Injectors fine (clean exhaust), fresh diesel, filters and replaced fuel lines. Fuel pump pressure as per Mack manual. Checking the Turbo boost pressures (no gauges fitted, but have added aftermarket to be able to check) only give (under load pulling 32 ton) Mack Max RPM = 2300 1600rpm – 1800rpm = 2 to 4 psi. Best PSI reading is just about 5psi when accelerating up to 2000rpm. Am I expecting too much in the way of 'performance' from a truck of this age / era / horsepower ? Thanks Phil
  5. Mike, Thanks for comments. I suppose whether the poster sees my comments might depend if he has a copy automatically sent to his email address and how often it's checked. or they might regularly check the BMT website for replies.... ? You are probably right about the '719' being the ENDT864. I made an error on the last paragraph by referring to '712' instead of '719' (I keep getting them mixed up - must be an age thing....) It sure seems that the ENDT864 (of which not a huge number were ever made) is quite thin on the ground these days. There is mine (in England), another in the States (NEK, Holliston) from the same batch as mine sent to Campanella of Warwick, Rhode Island, the two axle R series of Dan Thomas, plus your CF and, I believe, one or two other Fire Appliance versions. Plus might be one or two in Australia left ? Maybe a B series or two still about with the ENDT864. Mine is kinda running OK - bit dribbly now, but always starts on the button no matter how long it is left standing. Don't think it is knocking out 300ish hp though... 220,000 on the clock, which is prob correct considering it's use as short haul sand and gravel in its working days. Complete truck still passes the UK VOSA test for trucks each year- same test as modern Volvo, Scani, Mercs etc How is your doing ? Phil
  6. Hello Bit behind with seeing this post, and not sure if I can help you, but... I to have the ENDT864 engine in my R719LS If you google 'american bosch V8 diesel', then this website comes up. www.nestimmobiliare.com/american-bosch-psb4a-fuel-injection-pump-manual.pdf I've no idea if this is any good or not as I've never tried to open it....you have to 'sign up', and I did not want nor need to. There was also somebody selling some PSM rotary Bosch pumps in eBay. Item 321248648864. But do pay $600 ! Offer less than $200 and they may well sell at that...... Would you be able to tell me if you do have a R712LS as opposed to the R700 ? Thought the ENDT864 (twin turbo V8) was only fitted to the R712LS - maybe 272 of them made ? Not a brilliant engine, it seems... Phil
  7. Hello, I tried this ages ago, but thought I'd try again. Looking for some 1100R x 22" (NOT 22.5") tyres for R719LS. I know they are not very common now (still for sale in South America though, and, of course, the Chinese make 'em), AND I'm the wrong country too (UK). Open to ideas / Suggestions. Phil
  8. Hello, Phil Bennett here from Oxford, England. R719LS - I have Chassis Number 1260. All working fine. Interested in your comment about still having the turbos (?). If you wished to sell them to a good home so I'd have some 'spares' I'd be interested. Appreciate I'm not quite in the country, but I do have a friend in CA who kindly forward ships items for me. (Images shows Mack in Black 'wrapping' as used in a movie recently - normally it's Orange) Thanks
  9. Hello. I've an R719LS with the ENDT864 engine. Those who are familiar with this engine will be aware it is the (not the best, it seems...) Mack V8 with the Twin Turbo set up. When acquired the truck it had (somewhere along the line) been fitted up with a single stack and both turbo outlets run into the one pipe. So, I decided to 'convert' (put back to original ?) the system back to a twin stack setup. 3 1/2" stainless pipe used throughout that I prepared and had welded professionally (Stewart welds pipework for airline refuelling rigs). Also bought some stainless silencers with a heat shield and 'custom made' some stainless brackets to attach top section of silencers to rear of cab using the existing mounting inserts. The whole system was then Powder Coated in a high temperature Axaltacs Matt Black (same stuff as used on flue liners), which has worked out very well. On tick over the engine sounds no different, but once on the move, it does sound quite 'burbbly'... Here are some images for you to see result. Er, well there would be if the 'system' allowed me... Contact me if anyone wants more info / images. Phil
  10. Phil here from Oxford, England. Have a R719LS that was part of a batch of 12 Macks bought by Campanella Corp (Sand & Gravel) of Jefferson Boulevard, Warwick, Rhode Island, 02886 back in January 1970. Truck is still running fine, with pretty much all it's original running gear despite it's engine* spec - ENDT864 + Quadraplex gearbox(es). *believed to be not that reliable and often swapped. Anyhow, I wonder if there are any members who might have any knowledge / recall / information / images etc of the trucks used (and in particular the R719) that were used by Campanella Corp ? I've been most fortunate in having a few folks who have supplied an odd image, information from a mechanic who worked on the trucks and, as of recent, someone who has the next but one chassis built. I have built up a far history of the truck I've got, but any more information is always welcome ! Perhaps I ought to post it's history that I know so far ? Thanks Phil B
  11. Are you still interested in photos of R719LS ? If so, I have one over here in England, so let me know. Phil
  12. Hello. Wonder if anyone can help or advise ? (Have also placed this in the General Discussion) Am over in England and my R719LS has the 1100R x 22" tyres fitted. (NOT 22.5") Managed to buy x6 Firestone T575 highway tyres about 6 years ago, but could do with a final x4. Firestones to match would be great, but other brands are fine (availablity seems limited these days). Anyone any experience in procurring these 1100R x 22" ?? I can container them from Apopka, Florida. Thank You !!
  13. Hello. Wonder if anyone can help or advise ? (Have also placed this in the General Discussion) Am over in England and my R719LS has the 1100R x 22" tyres fitted. (NOT 22.5") Managed to buy x6 Firestone T575 highway tyres about 6 years ago, but could do with a final x4. Firestones to match would be great, but other brands are fine (availablity seems limited these days). Anyone any experience in procurring these 1100R x 22" ?? I can container them from Apopka, Florida. Thank You !!
  14. Hello. Wonder if anyone out there can help ? Am based in England (UK) and have a R719LS (1970). It's has the quadreplex gearbox set up (5spd + 4 spd) and is fitted with a PTO located on the passengers side of gearbox. I'd like to remove said PTO and 'blank off', but has anyone any advice before I just go undoing bolts etc. Will oil flow out ? Will internal parts fall out ? I'm sure I can have made up a suitable 'blanking off' plate securely affixed and sealed. Any suggestions welcome. Thanks Phil
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