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#1
01-03-2025, 04:38 PM
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Review: PTFB WS6 Dual 9" Brake Booster
Well, it's not often I'm shelling out for new bling but I really wanted better stopping with my low vac cam. It's a fairly new product from Mr. PTFB so I thought I'd share my experience with it.
Came packaged really nicely and looked well painted. Came with the clevis and an alternate master cylinder push rod. Removal of my stock booster was pretty horrible but I managed the whole thing without removing anything but the master cylinder. A good selection of 9/16 spanners helps here. I couldn't get a ratcheting one on because the bracket is too near the nuts for the bulkier rings on those sorts of spanner. Note to self: when you remove the brake booster the brake pedal will droop and your brake lights might be on all night if you leave the job half done... When I trial fit the master on the new booster I found the studs were a mm or so too close together. Had to waller the holes on my master just a bit with a cylindrical die grinder bit. Same for the bracket holding the proportioning valve. For me, as delivered, the clevis rod (it is threaded) needed 1 1/2" taking off to match the length of my stock unit. I measured the stock one (braket mounting face to pedal hole) and then bolted up the master to the new one, took up all slack and measured that one. Made me a little nervous but it turned out spot on. Dave advised me that it might be easier to mount the bracket to the firewall first and then mount the booster to the bracket so I did it this way round. It is going to be tight either way. But everything went back in place with minimal pursuasion. On the road on my short test drive it definitely gave more stopping power. Not, like, double or anything. But usefully better. Pedal feel was generally good but it definitely feels more "assisted" and less direct pedal feel. But not bad. To be fair, GM used this booster in later cars so probably the same pedal feel as one of them. Well, next step this winter anyway is going to be to install a cam making even less vacuum... Hope it helps someone. Sam
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-- Sam Agnew Where you come from is gone; where you thought you were going to, weren't never there; and where you are ain't no good unless you can get away from it. Ministry - Jesus Built My Hotrod Last edited by glhs#116; 01-03-2025 at 04:45 PM. |
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#2
01-03-2025, 04:46 PM
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For getting boosters off Flex ratcheting boxed end like Gear heads is your friend. Later models it is freaking metric!
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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