FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#1
|
||||
|
||||
455 carnage
One of rod bolts broke and pretty much lost everything in the block. I was using 8740 bolts, eagle h beams . I know now i should have had 2000 bolts
Mostly due to flying debris the engine is toast, broke the main cap and bent the arp stud. 455 2 bolt caps. I had good oil pressure before this happened but the journal on the crank was almost black so figured it got hot. I was shifting at 6700 but on occasion got to 7k. There were no bearings to look at from that rod and havnt pulled it apart any furthur. I was running 20w50 vr1 I may use my 67 400 2 bolt block and do splayed caps and go from there.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#2
|
||||
|
||||
Sorry to hear and see this Bill, but to me pushing the factory 455 2 bolt main caps which are just plain gray iron up 7000 rpm is going to get you sooner or later, and with the Rod bolts if you do not change them out by every 4th torque up session then that's another potential red flag point also.
Which cylinder had the issue ? If the motor was detonating in the cylinder and pounded out that Rod Bearing which started the mayhem then you really can't blame the Rod for going south! Do any of the other rod Bearings show signs of excess load or movement?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
|
||||
|
||||
those 6.625 rods? if you have any ''good ones'' left PM me, i have a buddy trying to piece a budget build together.
Checn the block up thru the #2 main to the cam journal for a crack. Is that 3/4 rod that came apart first?
__________________
1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#4
|
||||
|
||||
Cyl 4 is what came apart. After seeing the other thread had we wondering because the the blackened crank.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#5
|
||||
|
||||
Ouch 7000 rpm. Curious if it was even making power to 7000 rpm? Time for after market block. Sorry to see this happen.
Nice times by the way. 10.48.. wow |
#6
|
||||
|
||||
Yea, it got away from me here and there on the burnouts, I had my rev limiter turned up and was trying different shift points also. I belong to an exhibition Gasser group that races heads up for fun so sometimes like to put out some big burnouts.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#7
|
||||
|
||||
I went to a 2-step rev limiter just for the burnout issue.
Set it at a reasonable limit then can go full throttle if wanted on burnout. A 4500/5000 RPM burnout should still be smoky. (and no watching or worrying about the tach reading) Sorry to see the carnage on your 455. I have seen a few of those unfortunately. Although most didn't destroy the block, but some did. Using the 400 block (smaller mains) seemed to help a lot. May have only had a couple with them. (and those may not have had good rods)
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#8
|
||||
|
||||
Im not too familiar with a 2 step but that would probably help with the burnout and also using the transbrake. But my stall is 5200 so would need to set it higher than that ?
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#9
|
||||
|
||||
For the Burnout?
It will hold at the RPM set on the 2-Step. (it just cuts the ignition, no brake) If the converter was around 3500 and you are on the tranny brake, that 5500 RPM may not work?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#10
|
||||
|
||||
Rod 4 and rod 1 get there oil from the number 2 main, so how does number 1 rod Bearing look?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#11
|
||||
|
||||
I haven't had the time to get it apart . Iv'e been putting a lot of other things off so I need to get caught up on that first. At this point it wont be quick to tear it apart because of the damage and be looking forward to a replacement.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#12
|
||||
|
||||
Im pretty sure I got the rod and journal too hot from oil starvation and rpm, and than it locked up and broke the bolts and rod. Judging by the looks of the crank journal.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#13
|
|||
|
|||
Just curious. Do you know what your water temp and/or oil temp were when you hit the water box at 6500 RPM? Interested in what the #2 main bearing looks like as well.
|
#14
|
||||
|
||||
Sorry to see and read that!
|
#15
|
||||
|
||||
I dont know the specific water temps, im still using the sender from 1955 lol. But it was warmed up i thought good enough and oil pressure is good.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#16
|
|||
|
|||
Thanks for the info. Was concerned it may not have been warm enough when you ripped it up to high RPM's in the water box. We had issues with thick oil and not enough heat killing bearings early on. If the #2 and #3 main bearings look oil starved, that may still be a minor concern.
|
#17
|
||||
|
||||
Im wondering if #2 main cracked and cap broke first than lost oil pressure to rod? Ill have to wait and see
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#18
|
||||
|
||||
That would be my guess?
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
#19
|
||||
|
||||
Quote:
FWIW: Eric
__________________
"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
#20
|
||||
|
||||
Ouch! Sorry to hear and see this
__________________
Jim Moshier 1971 Grand Prix 462ci SD Performance 6x heads 1962 Catalina 389 1968 Firebird 400-455 I haven't decided "If we ever forget that we're one nation under GOD, then we will be a nation gone under." - Ronald Reagan |
Closed Thread |
|
|