Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
PSA
Member Login

Site Notices
Arrow Left Previous Page
Page / 5
Posted: 7/17/2011 8:12:49 AM EDT
[Last Edit: 8/11/2011 8:44:21 AM EDT by Gtdhw]
...during the fist round launch. Came off the trans brake and at 5400 rpm, it made a very small noise and then died . All I know for now, is that the crank isn't broke. More details to follow when I get it home (later today).....


UPDATE: Here's what I got so far.....

Balancer turns
Distributer doesn't

# 3 Intake
#7 exhaust
#4 intake
#8 intake

These valves move when the engine is turned over. Not moving like they are supposed to, but minute movement from the piston hitting the valve (would be my guess).

#3 and #5 rockers slipped & jumped off as well.

Other than that, there is no movement up top.

So, that tells me it's either broken chain, broken cam gear bolts, or sheered key.

Up next is removing the water pump and timing cover to find out which one it is....




Link Posted: 7/17/2011 8:16:44 AM EDT
That sucks.
Link Posted: 7/17/2011 8:16:58 AM EDT
Check the timing belt.    

vmax84


Just kidding.   That sucks.   Nice looking ride but I can't even begin to imagine how much money it takes to keep running.   Hope it's nothing too serious.
Link Posted: 7/17/2011 8:17:52 AM EDT
So what was your R/T?



Posted Via AR15.Com Mobile
Link Posted: 7/17/2011 8:19:26 AM EDT
Awe it's just low on blinker fluid, top it up and it will be fine.
Link Posted: 7/17/2011 8:31:09 AM EDT
Originally Posted By Cole2534:
So what was your R/T?



Posted Via AR15.Com Mobile


Not sure, never made it the end to get my time slip. What's funny is I won the round against a red light...
Link Posted: 7/17/2011 8:35:21 AM EDT
[Last Edit: 7/17/2011 8:37:01 AM EDT by Silver_Surfer]
If you could here a noise @5400 it was'nt a small noise!

Maybe you got lucky and it's electrical!
Link Posted: 7/17/2011 8:36:40 AM EDT
sweet looking car..I remember the threads back when you were building it ...hope its not too bad
Link Posted: 7/17/2011 8:37:51 AM EDT
Aww man

Keep us upodated
Link Posted: 7/17/2011 8:38:26 AM EDT
Originally Posted By Gtdhw:
Originally Posted By Cole2534:
So what was your R/T?



Posted Via AR15.Com Mobile


Not sure, never made it the end to get my time slip. What's funny is I won the round against a red light...

Aw shit, hahaha.  



Posted Via AR15.Com Mobile
Link Posted: 7/17/2011 8:40:39 AM EDT
[Last Edit: 7/17/2011 8:53:27 AM EDT by Gtdhw]
Originally Posted By Silver_Surfer:
If you could here a noise @5400 it was'nt a small noise!

Maybe you got lucky and it's electrical!


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone. When it turns over, the balancer moves so I know the crank isn't broke. When I get it home, I will first see if it has oil pressure during cranking, then remove the dist. cap and see if the rotor spins during cranking. That should give good indication if it's the chain/cam. If it was the chain that let loose, at 5400, the heads and all the valves are shot.
Link Posted: 7/17/2011 8:42:29 AM EDT
[Last Edit: 7/17/2011 8:42:44 AM EDT by Kalahnikid]
Originally Posted By Gtdhw:
Originally Posted By Silver_Surfer:
If you could here a noise @5400 it was'nt a small noise!

Maybe you got lucky and it's electrical!


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone.


Im sure its just a headgasket.
Link Posted: 7/17/2011 8:42:32 AM EDT
[Last Edit: 7/17/2011 8:43:47 AM EDT by Silver_Surfer]
Originally Posted By Gtdhw:
Originally Posted By Silver_Surfer:
If you could here a noise @5400 it was'nt a small noise!

Maybe you got lucky and it's electrical!


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone.



Did you remove the valve covers? Look at the rockerarms.  Valve bent?
Link Posted: 7/17/2011 8:44:36 AM EDT



Oooops..... Time to get out the gold card.

I only wish I could afford to race a car. Riding motorcycles is my hobby and they are all I can afford at this time.
Link Posted: 7/17/2011 8:44:36 AM EDT
Babnana in the tailpipe?
Link Posted: 7/17/2011 8:46:14 AM EDT
Maybe you got lucky and broke the timing chain/gear.
Link Posted: 7/17/2011 8:48:34 AM EDT
Originally Posted By fxntime:
Maybe you got lucky and broke the timing chain/gear.


In a 14.8:1 compression engine that would be lucky!

...but it would be very BAD luck    
Link Posted: 7/17/2011 8:52:38 AM EDT
[Last Edit: 7/20/2011 12:29:23 PM EDT by Gtdhw]
Originally Posted By Silver_Surfer:
Originally Posted By Gtdhw:
Originally Posted By Silver_Surfer:
If you could here a noise @5400 it was'nt a small noise!

Maybe you got lucky and it's electrical!


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone.



Did you remove the valve covers? Look at the rockerarms.  Valve bent?


I didn't look at anything other than to make sure there wasn't a hole in the block and that the crank was turning. I have another car that I race (Vega Wagon) in Sprortsman and had to still concentrate on losing in it. I loaded ithe Camaro up and put it out of my mind until this morning. Have to go the track later and bring it home. I drive the Vega there and back so the Camaro comes home on Sundays.

Link Posted: 7/17/2011 8:55:02 AM EDT
A broken timing chain is no luck thing on a high lift motor with high compression at 5,400 rpm.  Usually things meet.

Chains are usually pretty silent when they go, just hop you are loosing compression due to a valve being stuck open and not a valve head wedged into and being friendly with another valve.
Link Posted: 7/17/2011 8:56:58 AM EDT
I had the roll pin on the distributor gear shear one time-acted just like that.

No turny the distributor gear, no sparky=easy to crank.

Pull the cap and make sure the rotor is turning.



Nick
Link Posted: 7/17/2011 8:57:11 AM EDT
Did I make it before the Fuck GM crew?
Link Posted: 7/17/2011 8:58:27 AM EDT
Originally Posted By NwG:
A broken timing chain is no luck thing on a high lift motor with high compression at 5,400 rpm.  Usually things meet.

Chains are usually pretty silent when they go, just hop you are loosing compression due to a valve being stuck open and not a valve head wedged into and being friendly with another valve.


That would be ok, I needed to upgrade from those chineese made, bottom of the line, super flimsy, Brodix Track 1 heads anyway...
Link Posted: 7/17/2011 9:02:34 AM EDT
its a big block........?
anyway sorry to here it 's broke...
(i'mandoldhasbeen)racer
Link Posted: 7/17/2011 9:06:46 AM EDT
Originally Posted By Hunduh:
Babnana in the tailpipe?


Link Posted: 7/17/2011 9:06:56 AM EDT
That sucks, can't trust those damn GMs. Hope it's nothing serious.
Link Posted: 7/17/2011 9:10:02 AM EDT
[Last Edit: 7/17/2011 9:10:40 AM EDT by Gtdhw]
Originally Posted By sniper1target:
its a big block........?
anyway sorry to here it 's broke...
(i'mandoldhasbeen)racer


SBC 406

...and thanks.
Link Posted: 7/17/2011 9:11:02 AM EDT
Originally Posted By Commando_Guy:
I had the roll pin on the distributor gear shear one time-acted just like that.
No turny the distributor gear, no sparky=easy to crank.
Pull the cap and make sure the rotor is turning.

Nick


Usually the case when you loose spark or fuel the motor will crank fast, Not so much with high compression. Tho it cold be.


I would like to help you out with a new set of heads, I see a few hundred brand spankin new ones everyday at work. I think they would notice if I walked out with a set though. The guys who pack the finished ones are pretty sharp.
Link Posted: 7/17/2011 9:11:44 AM EDT
Originally Posted By Hunduh:
Babnana in the tailpipe?



I'm guessing it would take a dozen or so to stop up the collectors on chevy big block headers..........

Link Posted: 7/17/2011 9:12:15 AM EDT
Originally Posted By Gtdhw:


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone.


Sounds like it jumped time and bent a bunch of valves.  Is it a chain timing set, gear drive, belt setup?

Here's mine:
Link Posted: 7/17/2011 9:12:52 AM EDT
Originally Posted By Commando_Guy:
I had the roll pin on the distributor gear shear one time-acted just like that.
No turny the distributor gear, no sparky=easy to crank.
Pull the cap and make sure the rotor is turning.

Nick


Had that happen also and I was happy that it was vs motor grenade.
Link Posted: 7/17/2011 9:13:02 AM EDT
Originally Posted By DamascusKnifemaker:
That sucks, can't trust those damn GMs. Hope it's nothing serious.


Well, for the GM haters........I don't think there is one single GM piece in or on the motor.
Link Posted: 7/17/2011 9:15:41 AM EDT
You really need to be running a gear drive instead of a chain for the RPMs you are running.
I would bet it jumped timing.
Link Posted: 7/17/2011 9:16:00 AM EDT
Originally Posted By ReSSurrected:
Originally Posted By Gtdhw:


It cranks alot faster than it should. It is/was 14.8:1 and you could tell by the cranking that it was high compression. Now, it cranks fast and easy telling me that the compression is gone.


Sounds like it jumped time and bent a bunch of valves.  Is it a chain timing set, gear drive, belt setup?

Here's mine:
http://i272.photobucket.com/albums/jj167/ReSSurrected_SS/454/IMG_0763.jpg


NICE!

Chain & small block 406. It will have gears next.
Link Posted: 7/17/2011 9:17:18 AM EDT
Very nice car. Love the number on the windshield
Link Posted: 7/17/2011 9:18:44 AM EDT
Originally Posted By hobbsar:
You really need to be running a gear drive instead of a chain for the RPMs you are running.
I would bet it jumped timing.


True. The motor was in the car when it was bought.
Link Posted: 7/17/2011 9:18:56 AM EDT
What's puzzling me is that you indicated by the way it cranks that it still has high compression.





Did I read that right?  Fast, easy cranking doesn't go hand-in-hand with high compression.  Unless you're using a 100 HP starter.





I'm not going to try to diagnose anything other than "It's broke. Now investigate and find out WHAT broke.".   I just want to hear

the results of the investigation.





CJ
Link Posted: 7/17/2011 9:19:06 AM EDT
Worst I've ever done was float the valve train on a missed power shift and broke20 or so springs
in the heads (inner and outer) on both intake and exhaust side.  Thank God the keepers held the valve
stems from dropping into the bore and punching holes in the block (Got VERY lucky). I also broke
the lifter keeper in the lower intake one time and had 2 sets of roller rockers shift sideways and wipe
out the lobes on the camshaft. That also sent shavings throughout the motor so that was ANOTHER full rebuild.

Worst one I heard about was a roar racer guy at Bridgehamton lose the motor and the end of the long straight
due to overreving (too steep rear end gears for that course). He busted the crankshaft in 3 places, took out the
oil pan and oiled his rear tires at the end of a 130 mph straight. He ended up about 100 yards into the woods - but was OK
Link Posted: 7/17/2011 9:22:02 AM EDT
Originally Posted By tominjax:
Very nice car. Love the number on the windshield


It's on the both sides and bigger too, along with a 4" BFL on the rear.


Link Posted: 7/17/2011 9:24:51 AM EDT
Originally Posted By cmjohnson:
What's puzzling me is that you indicated by the way it cranks that it still has high compression.


Did I read that right?  Fast, easy cranking doesn't go hand-in-hand with high compression.  Unless you're using a 100 HP starter.


I'm not going to try to diagnose anything other than "It's broke. Now investigate and find out WHAT broke.".   I just want to hear
the results of the investigation.


CJ


Will update as stated. No, it cranks like there is NO compression (or nowhere near what it should be).
Link Posted: 7/17/2011 9:25:16 AM EDT
Broken camshaft ................that sounds like what it is to me.
Link Posted: 7/17/2011 9:26:56 AM EDT
RS/SS there pard?
Link Posted: 7/17/2011 9:28:40 AM EDT
Originally Posted By Gtdhw:
Originally Posted By DamascusKnifemaker:
That sucks, can't trust those damn GMs. Hope it's nothing serious.


Well, for the GM haters........I don't think there is one single GM piece in or on the motor.


Not a hater just poking fun. I can't be a hater I drive an AMC Javelin and some time in the future a Gremlin



Link Posted: 7/17/2011 9:29:55 AM EDT
Originally Posted By DamascusKnifemaker:
Originally Posted By Gtdhw:
Originally Posted By DamascusKnifemaker:
That sucks, can't trust those damn GMs. Hope it's nothing serious.


Well, for the GM haters........I don't think there is one single GM piece in or on the motor.


Not a hater just poking fun. I can't be a hater I drive an AMC Javelin and some time in the future a Gremlin

http://adw.go-gbs.com/IMG_3926c.jpg

http://adw.go-gbs.com/IMG_3728c.jpg


Sweet.
Gremlins are fun with a 401 Go-Pack motor.
Link Posted: 7/17/2011 9:36:28 AM EDT
Originally Posted By DamascusKnifemaker:
Originally Posted By Gtdhw:
Originally Posted By DamascusKnifemaker:
That sucks, can't trust those damn GMs. Hope it's nothing serious.


Well, for the GM haters........I don't think there is one single GM piece in or on the motor.


Not a hater just poking fun. I can't be a hater I drive an AMC Javelin and some time in the future a Gremlin

http://adw.go-gbs.com/IMG_3926c.jpg

http://adw.go-gbs.com/IMG_3728c.jpg


Wasn't directed at you, just a blanket statement. BTW, I like AMC's too!

Link Posted: 7/17/2011 9:37:25 AM EDT
Low compression? Meh, just dump in a can of Restore and it'll be fine.
Link Posted: 7/17/2011 9:40:18 AM EDT
I recommend gear drive for all race engines.   Noisy as hell but its a race car.  Sorry bout your engine though.
Link Posted: 7/17/2011 9:40:39 AM EDT
Bummer. Looks like a lot of fun!
What class? Typical pass times/speed?
Link Posted: 7/17/2011 9:42:36 AM EDT
Originally Posted By vmax84:
Check the timing belt.    


Don't you mean timing gears?  It is a Chevy, after all...
Link Posted: 7/17/2011 9:47:36 AM EDT
Originally Posted By Powderfinger:
Bummer. Looks like a lot of fun!
What class? Typical pass times/speed?


Super Pro.
1/8th - 6.50's @ 103mph
1/4    - 10.30's @ 138mph
Link Posted: 7/17/2011 9:50:04 AM EDT
Originally Posted By DamascusKnifemaker:
Originally Posted By Gtdhw:
Originally Posted By DamascusKnifemaker:
That sucks, can't trust those damn GMs. Hope it's nothing serious.


Well, for the GM haters........I don't think there is one single GM piece in or on the motor.


Not a hater just poking fun. I can't be a hater I drive an AMC Javelin and some time in the future a Gremlin

http://adw.go-gbs.com/IMG_3926c.jpg

http://adw.go-gbs.com/IMG_3728c.jpg


I always have loved the interiors of late 60's and early 70's AMC cars..........about 8-10 years ahead of the times.
Link Posted: 7/17/2011 9:56:13 AM EDT
I remember when you rolled out the blue painted headlight doors. Many here said how shitty it made the car look.  
Arrow Left Previous Page
Page / 5
Top Top