|
440-6 engine dyno????
#89708
07/17/08 08:40 AM
07/17/08 08:40 AM
|
Anonymous
OP
Unregistered
|
Anonymous
OP
Unregistered
|
I have a 70 cuda with 45 miles on it and on it I upgraded to pointless distr. At cruise I get a constant surge. I did the engine completly stock. I have been told to use the vacuum advance and no do not use the vacuum advance, set the timming a 18*BTDC not 10* as the bood says, its a carb problem and now the local guy says the only way to figure this out is to put it on a dyno. I sure don't like the way the engines sound on a dyno, is it safe and do you agree. Any ideas would really help right now. The guy with the dyno told me that setting the timming at 10* and the total advance at 36* and hooking up the vacuum and have the total advance pulled up to 52* is perfect.
|
|
|
Re: 440-6 engine dyno????
#89709
07/17/08 09:19 AM
07/17/08 09:19 AM
|
Joined: Jan 2003
Posts: 74,907 U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
|
don't take this the wrong way but ... you don't seem to have the skills to correctly tune it , and seriously sometimes i don't either so it will be money WELL SPENT to take it to a shop with a chassis dyno that can duplicate actual running down the road and tune out that surge , correct the A/F ratio and get the most power out of the engine . it's a no brainer
|
|
|
Re: 440-6 engine dyno????
[Re: JohnRR]
#89710
07/17/08 09:48 AM
07/17/08 09:48 AM
|
Anonymous
OP
Unregistered
|
Anonymous
OP
Unregistered
|
not taken the wrong way, thanks for your wisdom as I am a carpenter and not a mechanic
|
|
|
Re: 440-6 engine dyno????
#89714
07/17/08 05:08 PM
07/17/08 05:08 PM
|
Joined: Jun 2008
Posts: 3,913 usa
lewtot184
master
|
master
Joined: Jun 2008
Posts: 3,913
usa
|
Quote:
I have a 70 cuda with 45 miles on it and on it I upgraded to pointless distr. At cruise I get a constant surge. I did the engine completly stock. I have been told to use the vacuum advance and no do not use the vacuum advance, set the timming a 18*BTDC not 10* as the bood says, its a carb problem and now the local guy says the only way to figure this out is to put it on a dyno. I sure don't like the way the engines sound on a dyno, is it safe and do you agree. Any ideas would really help right now. The guy with the dyno told me that setting the timming at 10* and the total advance at 36* and hooking up the vacuum and have the total advance pulled up to 52* is perfect.
the 10-36-52 timing scenario is correct. you were given carb advice in a previous post. please use those jetting tips and your problems will probably be solved.
|
|
|
Re: 440-6 engine dyno????
[Re: lewtot184]
#89715
07/17/08 07:22 PM
07/17/08 07:22 PM
|
Anonymous
OP
Unregistered
|
Anonymous
OP
Unregistered
|
The new repo carbs come with 62 jets in the center carb--not enough--add some jet and that baby will do great--I agree that a 66 to a 69 is a good starting point depending on your type of exhaust etc
|
|
|
|
|
|