$100 brake upgrade (Page 7/43)
fierogt88 APR 05, 09:16 PM

quote
Originally posted by flames4me:

for the problem you are arguing about is easily solved, people with big cams, blowers, etc have been using them for years. there called an electric vacume pump... something like this:

http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisp lay?lang=-1&catalogId=10002&storeId=10001&categoryId=22593


This is very interesting. I didn't realize things like this even existed. This could be an upgrade for us all on it's own. By taking out the vacuum line running all the way down the car it can free up some room for other things like cables for a battery relocation, etc....

Good find!
jstricker APR 07, 10:44 PM
I think I'd hestate running the battery cables in the interior of the car, but that's just me. The brake vacuum line runs inside the car on top of the center console.

There was discussion on booster size vs. which engine, the V6 and the 4 both take the same booster part number from GM on the 96 S10 so apparently GM doesn't think it's much of a factor. As kcfiero pointed out, besides the area, the gain ratio is important and it is, in effect, a controlled leak. Unless you design these things the only way to know if it helps or hurts is to just bolt one on and try it, as Phil did. In his case, he felt an increase in power assist so the gain ratio had to be greater than the stock Fiero booster.

All that said, you can get a pretty good idea on how things are going to work by looking at how they are sized on the vehicles and their intended use. A huge booster off of an '80's era Caddy, for instance, wouldn't real be an appropriate alternative. Although the designs vary, often they are subtle variances as long as you stay in the same size/weight/brake type arena with what you have now. Barring any earth shattering technological developments, we are dealing with physics here, and the laws of physics haven't changed much in quite a while.

John Stricker

quote
Originally posted by fierogt88:


This is very interesting. I didn't realize things like this even existed. This could be an upgrade for us all on it's own. By taking out the vacuum line running all the way down the car it can free up some room for other things like cables for a battery relocation, etc....

Good find!
vortecfiero APR 11, 09:19 PM
this article does look interesting...
since i have an engine out of an S10.. im sure it will work vaccum wise

------------------

GT just waiting for the conversion

84 Fiero Turbo Vortec 4300 Phantom GT
L35 block, Syclone Intake and ECM with Moates adapter
50lb injectors, 3 bar map sens, T04B H3 Turbo

www.cardomain.com/id/vortecfiero
Murphy's Constant Matter will be damaged in direct proportion to its value
Murphy's Law of Thermodynamics Things get worse under pressure.
Arthur C. Clarke "Any significantly advanced technology is indistinguishable from magic"

Phil APR 23, 09:09 PM
Just some input on the concerns of some folks about vaccum problems- I just did this conversion on my wife's 88 Duke at a tech session today and it works perfectly. I even left about 20 FT of rubber on the street by locking up the brakes at 35 MPH. I had done some test runs earlier in the week and I couldn't lock them up at 30. Granted I had to apply a GOOD force to the pedal but now I can lock them up if I want to. If a Duke can work the system so can any motor.
avengador1 APR 23, 09:18 PM
Here is proof of Phil's skid marks. I was there too.

Before the swap, Phil was saying that he couldn't get the brakes to lock up at 30 MPH. After the swap they certainly worked real good from the cloud of smoke and rubber marks he left.

[This message has been edited by avengador1 (edited 04-23-2006).]

GT40 Kit 3.8 SC APR 24, 09:31 AM
THANKS PHIL!!!
I just completed this mod to my 85 based GT40 Kit.
I already had the Berreta brakes and Blaser M/C. Even with those up-grades I could not lock the brakes. Now I can with a lot less effort.
The install on my kit was a bit difficult, since the new body work makes it hard to get to the bolts, but it was all worth it. I picked up a booster for $50.00. The only other thing i needed was 4- 10MX1.5 nuts to bolt the Fiero bracket to the new booster. I also cut the excess bolt thread off and tack welded the 4 nuts. (I couldn't find lock nuts)
There have been several, comments hear about details, formulas, etc., but the proof is in the results! This is the best $50.00 I have spent on my brakes!
Thanks again to Phil for a great mod!
Kevin

------------------
85 Fiero-based ASPP GT-40 MarkII. 3800 S/C, Auto, Held suspension all around with 2" drop spindles and sport fr. end. RCC bump-steer correction. Mr. Mike's interior.

avengador1 APR 24, 11:47 AM
For anyone interested here is a side by side picture of the orinal power booster and the S-10 one. You can see how much larger the newer one is. Phil told me he also painted it black to match the look of the original as they are silver in color when you get one.

[This message has been edited by avengador1 (edited 01-16-2009).]

Phil APR 24, 12:59 PM

quote
Originally posted by GT40 Kit 3.8 SC:

THANKS PHIL!!!
I just completed this mod to my 85 based GT40 Kit.
I already had the Berreta brakes and Blaser M/C. Even with those up-grades I could not lock the brakes. Now I can with a lot less effort.
The install on my kit was a bit difficult, since the new body work makes it hard to get to the bolts, but it was all worth it. I picked up a booster for $50.00. The only other thing i needed was 4- 10MX1.5 nuts to bolt the Fiero bracket to the new booster. I also cut the excess bolt thread off and tack welded the 4 nuts. (I couldn't find lock nuts)
There have been several, comments hear about details, formulas, etc., but the proof is in the results! This is the best $50.00 I have spent on my brakes!
Thanks again to Phil for a great mod!
Kevin



Very glad to hear that is also as effective on a pre 88s as it is on the 88s

[This message has been edited by Phil (edited 04-24-2006).]

GT40 Kit 3.8 SC APR 26, 09:27 AM
Bump to let more people see this. The more I drive with this mod the more I like it!
Kevin

------------------
85 Fiero-based ASPP GT-40 MarkII. 3800 S/C, Auto, Held suspension all around with 2" drop spindles and sport fr. end. RCC bump-steer correction. Mr. Mike's interior.

Phil APR 26, 09:58 AM
I would be very interested to know if anybody with a pre 88 and an otherwise stock brake setup has tried this. If you are adventurous and would like - just show up at my house with a pre 88 and bring along an S-10 booster with the 4 nuts and lock washers to fit the studs and I'll do the conversion for ya. Should only take a few hours.