xlwhellraiser

iTrader: (1)

I powerbrake the car and the car sits at 1000 RPM. Once I let off the gas she boggs and gets back on running right.
My flexplate is cracked and I need to replace it. I've heard that once the flexplate cracks the converter takes a hit.
I've done the tune up and new pluggs etc. I have a new flexplate and I am gettina new converter.

I also have a siezed rear caliper, would that stop me at 1000 RPMS??

I need help.

84z28350

well theirs alot of things according to your avatar thing that tells you why...


1) unless you have any mods or rebuild you have a very gutless worn out motor.
2) posi doesnt help you one bit when you are low on power trying to burnout
3) disc brakes on the rear further worsen the situation because they tend to hold a bit more than a drum would.

Xophertony

whats a pro-am?

84 Z-28 350

try doing it after it rains

dr1

isnt this like your 100th thread on the topic now, stretching on for months, and you've known you have a broken flexplate, and your still trying to blow it into as many peices as you can apparently

whats wrong with you ;0

83camaroMN

or try it on a gravel road

CrazyHawaiian

Burnout tech 101. Flexplate aside, its a simple matter of power vs traction. Either not enough power to spin the tires you got on, or another way to look at it, too much tire for the ammount of power you have. My old L03 was able to roast 195mm wide rear tires on the regular (look at my avatar, thats my old L03), downright ridiculous but it did roast em. Slap on some 195's and go for it, see if that flexplate will explode!

84 Z-28 350

he says he has a sezied rear caliper too...that could also be a problem....but why do burnouts anyways....tires get expensive after awhile, also if that flexplate goes it could damage the trans case, and running it like that is going to burn up the trans

87IROCZ350TPI

You don't like paint, huh?

84 Z-28 350

lol....'ol dukes of hazzard style...I used to do that when I was a kid

84z28350

haha.

well one of these times he will be posting from the hospital while the doctors try to reattatch his legs because the flexplate blew apart.

And buddy, you had better believe it. If that thing comes apart its going through that bellhousing and floorboard and through your legs if their in the way...

87IROCZ350TPI

Does that really happen? I didn't realize that it was that dangerous. I might check mine tonight.

84z28350

uhhh yes, of course its possible...

Steel pieces flying around at a million miles an hour arent going to stop too easily. especially by a piece of thin aluminum!


Do some searches, i dont know if youll find anything but their has been some pretty scary pictures posted. bellhousings look like swiss cheese after something like that!

mw66nova

iTrader: (13)

yes, that's why it's mandatory on all 9.99 and quicker cars to have a scatter sheild or blanket on the tranny, and suggested on 10.99 and quicker cars. though it happends on slower cars too.

84 Z-28 350

especally when the flexplate is already cracked

84z28350

and your trying to make it fly apart...

87IROCZ350TPI

hee, hee. Hey, thanks for the warning, I was completely unaware of this risk.

xlwhellraiser

iTrader: (1)

The flexplate is getting replaced. It could be my motor, but the last time I checked it had good compression. So, we'll see.

xlwhellraiser

iTrader: (1)

Could a gutless motor chirp tires from 1st to2nd?
Its like it has some kind of barrier beneath 15mph once I pass that she takes off like a bat out of hell. She is slow to get up, but in seconds she flies. Also, I noticed that I can do a burnout when she is warming up. Once she warms up no chance. The motor kinda chuggs along.
One day I was driving the car, and bam, the idle was fluctuating and I replaced everything I can and the car runs fine and drives great. Its just that off the line barrier that after about 15mph dissapears.

roachjuice

rev the hell out out the motor in neutral and throw it in drive... i guarantee the it will break something or spin the tires...

EvilCartman

iTrader: (1)

Yay for neutral drops! Awesome way to find the weak point in your drivetrain, see what explodes first. I tried doing a dry burnout today on the street with my sticky tires, too much traction. All it did was skid the front wheels hehe.

xlwhellraiser

iTrader: (1)

I am not too stupid to do that.

I think that the rear brakes are actually holding it back since one of the caliper has seized.

Anyway, today I tried doing a burnout and the car could not do it, but once I got off the brake she took off like a bat out of hell. I was suprised at how good she responded.
Flexplate is getting replaced tommorow, so don't write anymore coments about me wanting to brake/explode something. (Although they were funny).

CrazyHawaiian

How hard are you pressing the brake? You dont need to mash it to the floor, just enough pressure to keep the front wheels from rolling, thats all you need, like between 1/4 to 1/2 pressure. What size tires are in the rear? Open rearend or posi? Which side caliper is siezed?

Here's some video of me abusing my car w/ powerbrake and rear pads that were already gone, hopefully this will give you insparation to fix that flexplate and then go do some burnouts!! You can do it man!! (LOL)

http://www.powerslideways.com/video/Burnouts.zip

Xophertony

right now my car has the wrong prop valve on it's breaks (89+ rear discs, 88 combo valve) so i see WAY less break pressure then i should in the rear, this means i can do a burnout with less thenb 1/4 pedal pressure at like 1300 RPM.

i have my new adjustable proportioning valve sitting in my "to do" pile, along with half an LS1 brake conversion and new schocs... kinda waiting on the rest of the parts and wheels..

xwhellraiser.. if all else fails, chock the front wheels real well that way you need less brake pressure. AND FIX THAT CALIPER! that is downright dangerous, if it comes unfrozen while you are breaking and it suddenly grabs it could throw your car all kinds of funny directions, or the other side of the coin, if you only have one rear lock up (due to the other caliper not working) you will throw the car in an oposite but equally sucky set of crazy directions...

zacharyhorn

iTrader: (1)

I love smokey burnouts.

Zach

akafred

your probaby holding the brakes to hard.. let off till you just start to creep then press them just slightly harder... also throw some spare dougnut tires on there... lol