Need help need help!!!!!!!!!!!!!

Marco · 05-15-2013, 07:21 AM

I have a 92 Camaro J/SA that we just got, it has stock disc brakes on the front and drum on the rear. I need to bring the rpm up when I'm staging but the brakes don't hold that well. I have a set of strange brakes that I can put on the rear. My question is, is there any reason why i shouldn't add disc brakes to the rear? Do they drag and slow the car down?

Larry Hill · 05-15-2013, 08:46 AM

Try adjusting them to where the rear drum will just slide over the shoes and studs.

Dave Ribeiro · 05-15-2013, 09:07 AM

Marco,

Do what Larry says ....
Also , try riding (dragging) the brakes in the staging lanes to get them hot ? This will give you about 4-500 more RPM holding power on the starting line.. Make sure you also pump the brakes several times while staging ??This will also help you leave at a higher RPM ....
* Good Luck with the New car ....

Mike Taylor 3601 · 05-15-2013, 09:09 AM

I have seen manual conversions that have master cylinder in wrong location,manual and power are located different,
Check where master cylinder is mounted,when they are converted to manual brakes if master cylinder is put back in same location it will not have enough leverage,manual brake master cylinder was located high,where the top studs for booster was,usaully pedal will have hole but no pin,I grind swedge off pin and knock out w/punch and move to higher hole and then weld to retain,if this is case you will also have to fab new plate for firewall
MAKE SURE pushrod retained so that it can't come out of master cylinder,I usaully take piston out of cylinder and drill recess that rod sits in to a hole about 1/2-3/4 deep for rod to go up inside of piston. Have a positve retention method on pushrod where no way can it come out of master cylinder
Mike Taylor 3601

Chad Rhodes · 05-15-2013, 01:25 PM

i've got a 92 camaro as well. aerospace on the front, mopar minivan master cyl, stock rear drums. can push 3400 in the lights and hold. 3500 will creep

Marco · 05-15-2013, 09:14 PM

The brakes seem to work fine just not when im trying to stage the car at any kind of RPM. Is there any reason not to put the strange brake set that I have on the rear?

Jim Whitehead · 05-15-2013, 09:58 PM

Marco
You need to buy two sets of rear brake shoes and only use the primary from each set, the ones that are the longer lineings. Also resurface the rear drums, and adjust brakes. You should be able to hold the car between 3400 & 3500. Check the ratio of the brake pedal, you may need to lengthen the pedal ( move the push rod to pedal attachment higher up) more leverage. No need for rear disc. Drum brakes hold better.

Jim whitehead

05-15-2013, 07:21 AM	#1
Marco Junior Member Join Date: Oct 2005 Location: Florida Posts: 73 Likes: 0 Liked 4 Times in 1 Post	Need help need help!!!!!!!!!!!!! I have a 92 Camaro J/SA that we just got, it has stock disc brakes on the front and drum on the rear. I need to bring the rpm up when I'm staging but the brakes don't hold that well. I have a set of strange brakes that I can put on the rear. My question is, is there any reason why i shouldn't add disc brakes to the rear? Do they drag and slow the car down?

05-15-2013, 08:46 AM	#2
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,585 Likes: 1,871 Liked 10,585 Times in 2,187 Posts	Re: Need help need help!!!!!!!!!!!!! Try adjusting them to where the rear drum will just slide over the shoes and studs. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

05-15-2013, 09:07 AM	#3
Dave Ribeiro VIP Member Join Date: Sep 2002 Location: Williamsburg, Va.---USA Posts: 1,827 Likes: 1,612 Liked 56 Times in 27 Posts	Re: Need help need help!!!!!!!!!!!!! Marco, Do what Larry says .... Also , try riding (dragging) the brakes in the staging lanes to get them hot ? This will give you about 4-500 more RPM holding power on the starting line.. Make sure you also pump the brakes several times while staging ??This will also help you leave at a higher RPM .... * Good Luck with the New car .... __________________ Dave Ribeiro 1033 STK

05-15-2013, 09:09 AM	#4
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,349 Likes: 298 Liked 248 Times in 87 Posts	Re: Need help need help!!!!!!!!!!!!! I have seen manual conversions that have master cylinder in wrong location,manual and power are located different, Check where master cylinder is mounted,when they are converted to manual brakes if master cylinder is put back in same location it will not have enough leverage,manual brake master cylinder was located high,where the top studs for booster was,usaully pedal will have hole but no pin,I grind swedge off pin and knock out w/punch and move to higher hole and then weld to retain,if this is case you will also have to fab new plate for firewall MAKE SURE pushrod retained so that it can't come out of master cylinder,I usaully take piston out of cylinder and drill recess that rod sits in to a hole about 1/2-3/4 deep for rod to go up inside of piston. Have a positve retention method on pushrod where no way can it come out of master cylinder Mike Taylor 3601

05-15-2013, 01:25 PM	#5
Chad Rhodes VIP Member Join Date: Jan 2005 Location: Where the Green Grass Grows, AL Posts: 2,375 Likes: 0 Liked 3 Times in 3 Posts	Re: Need help need help!!!!!!!!!!!!! i've got a 92 camaro as well. aerospace on the front, mopar minivan master cyl, stock rear drums. can push 3400 in the lights and hold. 3500 will creep __________________ Chad Rhodes 2113 I/SA

05-15-2013, 09:14 PM	#6
Marco Junior Member Join Date: Oct 2005 Location: Florida Posts: 73 Likes: 0 Liked 4 Times in 1 Post	Re: Need help need help!!!!!!!!!!!!! The brakes seem to work fine just not when im trying to stage the car at any kind of RPM. Is there any reason not to put the strange brake set that I have on the rear?

05-15-2013, 09:58 PM	#7
Jim Whitehead Member Join Date: Mar 2003 Location: MA. Posts: 283 Likes: 148 Liked 147 Times in 39 Posts	Re: Need help need help!!!!!!!!!!!!! Marco You need to buy two sets of rear brake shoes and only use the primary from each set, the ones that are the longer lineings. Also resurface the rear drums, and adjust brakes. You should be able to hold the car between 3400 & 3500. Check the ratio of the brake pedal, you may need to lengthen the pedal ( move the push rod to pedal attachment higher up) more leverage. No need for rear disc. Drum brakes hold better. Jim whitehead