DRR S/Pro
| quote: Originally posted by johnracer:
I had a 7al2 do something similar years ago. I also had a worn distributor gear do it. I wasnt running a crank trigger at that time though.
Do you have access to a msd tester?
This box was in the car when I purchased it so I really don't know how old it is. If my testing Saturday doesn't show anything fruitful I will probably just put a new one in and have this one repaired for a spare, or to sell. |
| | | Posts: 3372 | Location: KIEFER, OK. | Registered: August 17, 2007 | 
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DRR Top Comp
| I recommend having a spare. I have had several go bad......... Techwest has repaired three for me but he is hard to get a hold of. All worked perfect after he did them. https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion |
| | | Posts: 4535 | Location: United States of Texas | Registered: April 02, 2011 |
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DRR Pro
| quote: Originally posted by CURTIS REED:
So I have been chasing a problem on my car and haven't been able to test enough to find it. Points races and Covid stoppage has me behind.
At around 7100-7200 my car will act just like it's on a rev limiter. I have to shift at 6900 and can't run 1/4 mile. Has anyone ever seen an ignition box act like that.
Things I have done:
New crank trigger pick up.
New distributor.
Shimmed springs first then changed springs.
Carb is different but have o2 data anyway.
I use a 3 step and have pulled the high side chip.
Made sure trigger wires are away from anything.
I was going to test Friday but they cancelled. I plan on pulling the three set plug out of the box. Other than that I will change the ignition as a last resort.
Yes!! 7-AL2 was "scattering" sparks, we discovered it trying to time the new engine.
"Despite the high cost of living, it remains popular."
Dave Cook
N375
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DRR Sportsman
| Not sure if you have access to an MSD tester. If you think the rev limiter is activating you could test that without wasting more test runs. If its a rev limiter falsly activating the tester will cut out above that rpm. While it wont let you test for a miss you may be able to prove or eliminate 2 step without going to the track.
B.J. Masiello
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| | | Posts: 250 | Location: Connecticut | Registered: November 27, 2007 |
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DRR S/Pro
| quote: Originally posted by MasRacing:
Not sure if you have access to an MSD tester. If you think the rev limiter is activating you could test that without wasting more test runs. If its a rev limiter falsly activating the tester will cut out above that rpm. While it wont let you test for a miss you may be able to prove or eliminate 2 step without going to the track.
Probably a good idea. I will have time to send it to MSD now. Engine is coming out. At the very least I wiped the coatings off and started to get into some bearings. |
| | | Posts: 3372 | Location: KIEFER, OK. | Registered: August 17, 2007 |
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