Wouldn't the heat be the ignition system's wattage (volts and current) ?
Testing the HiRev 7500
- Thread starter Newbomb Turk
- Start date
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The second diagram is what saved me last weekend. The start wire on the secondary side of the ballast is very important. It saves you jumping the box off the battery to get it started. A 5 post ECU on a 4 post system sure didn't help.
It's just another BS LIE!
LMAO!
Or sparkle pony? No wait. He'd have to be a chick for that. Well hold on......in this day and age he might be?
He does appears to be a little light in the loafers.
I've seen some pics where he appears to have some titties too. Niceuns. lolHe does appears to be a little light in the loafers.
That’s an MSD mag but there is a guy not far from me running a single 5 amp Mallory mag on fuel.
He passed on the HEI for that piece of **** mag. What a dumb *** he is.
I'm sure the MSD is all computerized and all that. Make sure you have an extra control box in the trailer!
@Newbomb Turk , This all has me wondering about the Lean Burn dual pickup distributors. Have you ever tested the advance difference between the 2 pickups? Were they a way to compensate for the slew rate in the system? If so, could a guy use an rpm switch to turn on the earlier firing pickup to put in more timing a little before peak power rpm?
Tony has a switch on his dual point distributor that can advance/de-advance timing (I believe 4*) He does it to pull timing out when he hits the NOS
This is what I always say to my customers.
So, what is the best economical ignition that's stable at 6500-7g? I have the grid with a 7al in one car, but my street ride uses the mopar oem distributor with an orange box. It always seemed like it didn't want to pull past 5800...yet its got deep enough gears and plenty of camshaft duration.
Hey someone to test your entire ignition system to see how much retard there is.
I’ve seen boxes that start retarding at 2k. If you don’t account for that you can lose power really quick.
Look in the mirror. All the retard you could ask for. lol
So, while "tuning" the van..... I brought the RPM's up to shift point (about 5000 rpms) and it didn't retard anything. This has the 4-pin HEI system.
the curve was all in about 3800-4000 rpm's. My wife was increasing the engine rpm's slowly, while i was trying to see around corners at the timing marks and the RPM's on the timing light. Got it all in and picked up more rpm's to see if it retarded, and then she cracked it quick and the mark didn't move but I couldn't capture what that rpm peaked. Again, very tough on the van to see the marks and look at the light rpm's. What I can tell you is it did not retard after the curve was in and to the above rpm point she cracked it to. I almost needed a 3rd person to watch the timing light rpm's while I watched the marks while she worked the throttle..... vans
I may get a 3rd person here and get more exact on the rpm's. But I feel we got a really good picture of the song it's singing.
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the curve was all in about 3800-4000 rpm's. My wife was increasing the engine rpm's slowly, while i was trying to see around corners at the timing marks and the RPM's on the timing light. Got it all in and picked up more rpm's to see if it retarded, and then she cracked it quick and the mark didn't move but I couldn't capture what that rpm peaked. Again, very tough on the van to see the marks and look at the light rpm's. What I can tell you is it did not retard after the curve was in and to the above rpm point she cracked it to. I almost needed a 3rd person to watch the timing light rpm's while I watched the marks while she worked the throttle..... vans
I may get a 3rd person here and get more exact on the rpm's. But I feel we got a really good picture of the song it's singing.
Is that with a stock Chrysler distributor? Are the springs stock?
This is with a stock Chrysler distributor. I "think" I left the springs alone, but man, I did that swap about 4-5 years ago??
That information on the springs may be in this video, I'll have to watch it and see what I did... LOL
Just watched ... I didn't mention springs, so I believe they are probably factory. Also, it had 18* of mechanical advancement. Worth mentioning, this system has been on there now for a while and has been without issue. I do carry a spare HEI with me
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What I have noticed on locked hei distributors on a running engine is that most if not nearly all the retard occurs below about 5000 rpm. This is part of the reason we have our customers set their timing at 5000 rpm on 602 crate motors. There are always exceptions.the curve was all in about 3800-4000 rpm's. My wife was increasing the engine rpm's slowly, while i was trying to see around corners at the timing marks and the RPM's on the timing light. Got it all in and picked up more rpm's to see if it retarded, and then she cracked it quick and the mark didn't move but I couldn't capture what that rpm peaked. Again, very tough on the van to see the marks and look at the light rpm's. What I can tell you is it did not retard after the curve was in and to the above rpm point she cracked it to. I almost needed a 3rd person to watch the timing light rpm's while I watched the marks while she worked the throttle..... vans
I may get a 3rd person here and get more exact on the rpm's. But I feel we got a really good picture of the song it's singing.
If you have a way figured out to record a timing light let me know how you do it. When ever I try that with my phone it skips a lot of the flashes.
I plan to redo this test, but better set up to capture the RPM's and the curve. More accurate so to speak.
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