jsd245 Posted January 9, 2022 Author Report Share Posted January 9, 2022 I’m not getting the hint hint nudge nudge? Think that booster is undersized for the master? Quote Link to comment Share on other sites More sharing options...
Brent B3B Posted January 9, 2022 Report Share Posted January 9, 2022 No, I don’t think it’s undersized. you mentioned rebuilding the MC at some point. It appeared to me you like to do research….. just trying to help. ? if you do have the 1-1/2” MC, might be worth looking for a kit now. 1-1/2” not as common from what I’ve noticed ( of course, that could just be my area also) Quote Link to comment Share on other sites More sharing options...
wallytoo Posted January 9, 2022 Report Share Posted January 9, 2022 (edited) 12 hours ago, Brent B3B said: I also switched the master cylinders… the B3GA is 1-1/4” with the B4GA was 1-1/2” (hint, hint, nudge ?) wouldn't jsd's b4ga already have the 1-1/2" master cylinder? edit: also, i'm surprised the b3ga wasn't equipped with the 1-1/2" bore MC. i thought all the medium and big trucks used that size. the MC on my b1fa was/is 1-1/2" bore. Edited January 9, 2022 by wallytoo Quote Link to comment Share on other sites More sharing options...
jsd245 Posted January 9, 2022 Author Report Share Posted January 9, 2022 51 minutes ago, Brent B3B said: No, I don’t think it’s undersized. you mentioned rebuilding the MC at some point. It appeared to me you like to do research….. just trying to help. ? if you do have the 1-1/2” MC, might be worth looking for a kit now. 1-1/2” not as common from what I’ve noticed ( of course, that could just be my area also) The PO was kind enough to include the kit-piston is 1.5” so appears to be the right one. Hopefully it’s not too far gone to rebuild. Looks like a new one is pretty pricey. I like to use a pressure bleeder- these master cylinders seem to have a threaded plug which I don’t have any kind of adapter for. Anyone know what the thread is on these? Quote Link to comment Share on other sites More sharing options...
Brent B3B Posted January 9, 2022 Report Share Posted January 9, 2022 29 minutes ago, wallytoo said: wouldn't jsd's b4ga already have the 1-1/2" master cylinder? edit: also, i'm surprised the b3ga wasn't equipped with the 1-1/2" bore MC. i thought all the medium and big trucks used that size. the MC on my b1fa was/is 1-1/2" bore. yeah, I was surprised also but, Rob helped me figure out the some were not equipped with boosters (as shown in the parts manual) and they (oddly enough) used the 1-1/4 and the different position hole on the brake pedal (shown in Rob’s special book ?) JSD’s booster being under the hood, led me to think there was a possibility someone added the booster and could have altered or exchanged the MC. from his little baggie I’d say it Looks like he is good to go. JSD, if it is “too far gone” they can re-sleeve it. The last one I had done, they didn’t have the 1-1/2” kit….. but your covered there Quote Link to comment Share on other sites More sharing options...
Brent B3B Posted January 9, 2022 Report Share Posted January 9, 2022 (edited) On 1/9/2022 at 7:39 AM, jsd245 said: 1/2”x 14 NPT Edited February 4, 2022 by Brent B3B Photo removed Quote Link to comment Share on other sites More sharing options...
jsd245 Posted January 9, 2022 Author Report Share Posted January 9, 2022 Thanks Brent. That makes it pretty easy. Quote Link to comment Share on other sites More sharing options...
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