mowerman Posted Tuesday at 10:47 PM Share Posted Tuesday at 10:47 PM 6 minutes ago, Joey Mack said: Im pickin up what you put down.. That sucks. The last p.o.s. job i did was pulling a mack tranny out of a granite dump truck,outside on a small hill, using plywood on the dirt to roll the jack. That job sucked.. ive done the same thing but it was level ground,,,,lotsa rocks,,,plywood and a pallet jack and of coarse alone lol.bob Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586092 Share on other sites More sharing options...
fjh Posted Tuesday at 10:54 PM Share Posted Tuesday at 10:54 PM Yup plywood on a side hill done that too! Improvise! 🤔if you don’t do it it ain’t getting done! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586094 Share on other sites More sharing options...
Popular Post davehummell Posted Tuesday at 11:48 PM Popular Post Share Posted Tuesday at 11:48 PM I have changed some clutches out in the yard with a sheet of plywood it adds to the job when the jack doesn't roll worth a darn 3 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586096 Share on other sites More sharing options...
Popular Post mrsmackpaul Posted Wednesday at 07:27 AM Popular Post Share Posted Wednesday at 07:27 AM On 11/25/2025 at 6:59 AM, Freightrain said: I'm going to drop the radiator off and look to have it recored. It doesn't leak, now, but with the added power/heat I want it to be good for awhile longer. I reckon it's cheap insurance on a good motor I got the R model done, it was crazy expensive, I think all Australian Macks of that era came with the biggest radiator you could get I can't remember the exact price, but it was over $5000 Australian Back then, with the exchange rate it was about $3600 US You probably felt the earth tremor when my jaw hit the ground But compared to the cost of a motor it is cheap Paul 3 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586111 Share on other sites More sharing options...
Freightrain Posted Wednesday at 01:00 PM Author Share Posted Wednesday at 01:00 PM I am not holding my breath until I get a price. It won't surprise me if it is crazy. But this is a very small radiator compared to an R model. The original has worked flawless for 25 yrs. Even on the biggest, longest grade I run it just gets to 200* and just holds it. It is a 9* grade in Pennsylvania. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586113 Share on other sites More sharing options...
Geoff Weeks Posted Wednesday at 02:04 PM Share Posted Wednesday at 02:04 PM 6 hours ago, mrsmackpaul said: I reckon it's cheap insurance on a good motor I got the R model done, it was crazy expensive, I think all Australian Macks of that era came with the biggest radiator you could get I can't remember the exact price, but it was over $5000 Australian Back then, with the exchange rate it was about $3600 US You probably felt the earth tremor when my jaw hit the ground But compared to the cost of a motor it is cheap Paul Late 2000 teens, I had a recore on my 9670, and it cost $2150.00so not at all surprised by your figure. It wasn't the biggest radiator IHC put in that truck either. I'm sure the biggest would be close to what you paid. add $400 to that price for the used radiator I bought to start the project. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586114 Share on other sites More sharing options...
mowerman Posted Wednesday at 02:40 PM Share Posted Wednesday at 02:40 PM Yeah I would guess around that also but I understand they are still available good luck Larry Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586115 Share on other sites More sharing options...
Freightrain Posted 4 hours ago Author Share Posted 4 hours ago Well, weekend update. Dropped off radiator Friday. They can handle it. $1200. Well,at least it isn't $2000.... I told them to do it. I was surprised how flattened out the fins were around the fan area on the back. I'm surprised it cooled as well as it did. I picked up the puller and started on it this evening. Got #1 out. Found out what the .020 stamped on deck. Block bored oversize. I need to make sure I can get oversize sleeves. These were Mack sleeves. You can just see the .020 on the deck by the sleeve. The bore is 4.875, which is stock. Apparently the dealer must have rebuilt this at some time and bored the block. I knew it has been apart due to red silicone on gasket surfaces. I will contact Mack and see if these are still available or if PAI has them before going any farther. May have a large paperweight on my hands?? Might be in framing the 237 and bolting on 300 parts. Time marches on ...... 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586261 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago The P20 on the liner says the same thing. .020" 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586263 Share on other sites More sharing options...
Freightrain Posted 3 hours ago Author Share Posted 3 hours ago Hopefully they are still easily gotten. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586264 Share on other sites More sharing options...
mrsmackpaul Posted 3 hours ago Share Posted 3 hours ago You can buy 20 thou over sleeves in Australia off the shelf So I reckon it won't be a drama in the U.S. as ours probably come from the same supplier If the link works in Yanky land you'll see STD, 6, 12 and 20 thou sleeves Cylinder Sleeve For Mack Engine E-6 2VH/4VH - MaxiTrucks https://share.google/H24bIClcGFfCC1rKZ Paul Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586265 Share on other sites More sharing options...
Freightrain Posted 3 hours ago Author Share Posted 3 hours ago Thanks for that Paul. I also just pulled the front Jake housing off the 237 and found out the valve lash caps are the same for the 300 valve stems(.500), so I don't have to chase those down. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586266 Share on other sites More sharing options...
fjh Posted 1 hour ago Share Posted 1 hour ago Don’t assume you have 6 p20 liners! You need to pull them all ! In my opinion! Quote Link to comment https://www.bigmacktrucks.com/topic/75768-300-rebuild/page/10/#findComment-586267 Share on other sites More sharing options...
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