View Full Version : 468 bbc lay over
wildchild71
07-12-2009, 04:49 PM
i have a 468 bbc with a rons toilet dart intake and oval port heads and it runs great but when i get on the two step and leave about 60 ft 100 ft it lays over all the way down the 1/8 mile any ideas ???
zipper06
07-12-2009, 10:08 PM
Sounds like the pump is not putting out at higher rpms, or you have a way too big return pill in the injection.
JMO
Zip.
hammertime
07-13-2009, 01:09 AM
i have a 468 bbc with a rons toilet dart intake and oval port heads and it runs great but when i get on the two step and leave about 60 ft 100 ft it lays over all the way down the 1/8 mile any ideas ???
What nozzel/pill & leak down on the barrel valve ?
What about knocking a sprag out in the converter ?
wildchild71
07-13-2009, 02:36 PM
brand new pump the toilet and every thing is brand new from rons 35 nozzles leak down done by rons the egt is perfect no wash down oil is perfect converter is new the tranny was just rebuilt ..bc i can't find were this problem is new case on the tranny new clutchs every thing new ...new car rebuilt the motor after 5 passes and it was new before the 5 passes ...went though every thing ...theres no popping ...the rons set up came from rons i told them every thing i had and what i was running and thats what they sent to me ....every thing in the heads are new and port and polished ..iron heads oval port ...i was only building a 6.0 motor for this car and had this same set up before ...i can't fidger it out i have changed every thing ...only thing i havn't done was put a gas carb on it ....and a differnt msd box ...other than that every thing is new??????
hammertime
07-13-2009, 04:29 PM
did it come from Rons in AZ or James Monroe a rons dealer ?
Whats the et and mph it runs ? Do you run a egt ?
wildchild71
07-13-2009, 05:22 PM
rons az i beleave ...yes i have an EGT ...it reads fine ..it's like it's not fuel bc every thing is perfect i even borrowed a pump to make sure ...i have no clue why it's laying over you can even feel it in the 2 step
hammertime
07-13-2009, 05:23 PM
Ignition or Converter then ..
whats the mph and et now ?
wildchild71
07-13-2009, 05:34 PM
new converter just changed it and it didn't change nothing ...haven't made a full pass bc when it lays over i cost ..1/8 mile 7.00
hammertime
07-13-2009, 06:13 PM
How about the pressure relief ball inside the barrel valve is it stuck ?
wildchild71
07-13-2009, 06:23 PM
thats what rons was asking me ...but the egt is reading fine and i change the valve out of my other toilet on my other car ..if it was stuck it would be to fat and the egt would show ..plus the oil would be shot
hammertime
07-13-2009, 06:42 PM
Should just remove it, no need to have it there. Do you run a crank trigger ?
wildchild71
07-13-2009, 06:50 PM
no i don't run a crank trigger
LuckyDawgRacing
07-14-2009, 01:43 PM
The leakdown was performed at Rons? did you take the car or engine there?What pill is in it?
wildchild71
07-14-2009, 02:08 PM
i've tired from the smallest pill to the largest pill nothing changes ...
zipper06
07-14-2009, 02:41 PM
You're running a front mounted tank,(right), also is the line feeding the pump at least a #10, also is the pump mounted below or level with the bottom of the tank. I had a friend who had the pump mounted too high, and on one run he forgot to refil the tank between rounds, luckly the other guy redlite, and my friend ran 4 ths slow, pulled plugs checked everything, not popping or anything. Then he slapped himself in the head, filled the tank and went right nack to the previous #'s. He's since remounted the pump below the bottom of the tank.
Just a thought
Zip.
wildchild71
07-14-2009, 03:22 PM
lol yeah i have seen that before ...but i have the #10 and i have the pump low ...i have a toilet on my other car also ..it runs and wins great leading the 7.0 points right now...but this other car is well i have no idea any more
zipper06
07-14-2009, 08:18 PM
O'K partner, i was just checking, very well could be MSD problem, i had a new 2 step that was bad once , and the car sat on the line and jumped up and down on the trans brake without breaking the beams, i have a vid of it but i'm too embassased to post it, took 3 trips to the track before i figured it out. I'm the opitidy of stupidity, and now i have a spare of everything, but i might not be able to figure it out in time to race the same nite. O'h by the way do run a 4.1 toilet bowl so i am familar with them.
Zip.
wildchild71
07-16-2009, 05:29 PM
im thinking it's in the tranny now ....going to swat the msd first ....has anyone ever had a tranny hold it back like your pulling a sled down the track?
suicidebomb
07-16-2009, 06:30 PM
I had a transbrake switch short out intermittatly, turning the tranny brake on and off going down track, felt just like I was dragging somthing. VERY hard on powerglides.
wildchild71
07-16-2009, 07:29 PM
was it doing something in high gear? i know low gear it will lock up the tires..i have forgot to put my car in low after the burn out and hit the transbrake just to fly out of the lights ...that suck lol ...thanks for the info im going to check it tomorrow ...im putting on a race here ...my first one out of my pocket just hoping people show :) "BEST OF THE BEST " race
dparker
07-16-2009, 08:34 PM
i've tired from the smallest pill to the largest pill nothing changes ...
If you've changed from the smallest pill to the largest pill and no changes. Thats a problem in itself, should have been major changes in the car.....
You may need a high speed lean out. Kinda weird some need it some don't. Are you using a 0-.5 pump or a 0 pump. Do you have a 50% reduction in the crank gear to the pump gear? If you pull the chips out will it stall up on the converter right.....and to the right stall rpm?
wmeabates
07-17-2009, 04:05 AM
Wild,Try this,Put trans in reverse, back up,take trans out or reverse or release brake button if pro brake.If car still seams like it wants to move backwards the reverse clutches are not releasing.Bill.
suicidebomb
07-17-2009, 04:37 AM
was it doing something in high gear? i know low gear it will lock up the tires..i have forgot to put my car in low after the burn out and hit the transbrake just to fly out of the lights ...that suck lol ...thanks for the info im going to check it tomorrow ...im putting on a race here ...my first one out of my pocket just hoping people show :) "BEST OF THE BEST " race
Yes it was trying to apply the revese clutches. It smoked the reverse and high clutches. Won't lock up the rear tires at 80 mph, but it will try to apply the reverse.
dparker
07-17-2009, 07:09 AM
was it doing something in high gear? i know low gear it will lock up the tires..i have forgot to put my car in low after the burn out and hit the transbrake just to fly out of the lights ...that suck lol ...thanks for the info im going to check it tomorrow ...im putting on a race here ...my first one out of my pocket just hoping people show :) "BEST OF THE BEST " race
Yes it was trying to apply the revese clutches. It smoked the reverse and high clutches. Won't lock up the rear tires at 80 mph, but it will try to apply the reverse.
That would be easy to check just launch your car on the footbrake and see if it lays down like it does with the transbrake.
Hey suicidebomb, how far are you from St. Louis???
suicidebomb
07-17-2009, 07:30 AM
was it doing something in high gear? i know low gear it will lock up the tires..i have forgot to put my car in low after the burn out and hit the transbrake just to fly out of the lights ...that suck lol ...thanks for the info im going to check it tomorrow ...im putting on a race here ...my first one out of my pocket just hoping people show :) "BEST OF THE BEST " race
Yes it was trying to apply the revese clutches. It smoked the reverse and high clutches. Won't lock up the rear tires at 80 mph, but it will try to apply the reverse.
That would be easy to check just launch your car on the footbrake and see if it lays down like it does with the transbrake.
Hey suicidebomb, how far are you from St. Louis???
DP, I'm 236 miles west of St. Louis, on I-70, about a mile northeast of the Truman sports complex. C'mon by!!