LemonWedge
Well-Known Member
Yes it does. While there’s always the chance that the issue could be in the carb, my sense is it’s in the delivery system. I’ll check the bowls before Saturday night just the same to make sure all oks right.
June at Pacific Raceways; Here we go!
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Ok. Thought maybe that was a possible problem showing up. It will likely end up being a pump issue. I went with an Aeromotive and that works great. I have installed the same one on my Dart project it works so good.
PRHeads
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The carb isn’t going make the fuel pressure drop to zero.
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LemonWedge
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Saturday night was a mixed bag. Last week I replaced all the existing 1/2” hard fuel line with -8 braided hose and AN fittings up to the mechanical pump, and -6 from the mechanical pump to the carb. I also added the electric pusher back to the equation, and eliminated the check-valve bypass line. Not exactly sure why this worked, but it seems to have taken care of the problem. Car is holding 6psi driving around, and 4psi through the top of the track.
With consistent fuel pressure, came the return of Car consistency as well. (3) time hits: 11.351, 11.353, & 11.370. I can dial that!
Went a couple of rounds and was feeling real good when Murphy struck once again. Round 3: I rolled out of the water box and went to put the car in the beams. While turning off the line-lock and flipping on the 2-step, I decided to also pull on the running lights, as it was getting dark. As soon as I pulled the light switch, the car lost ignition and died immediately. Wouldn’t start, clearly no spark. Ugghh. After they pushed me back, I looked under the hood and immediately noticed that with the key on, I seemed to have everything except the ignition box. I run an MSD Digital 6-plus box. It has a light that confirms power, it was dark.
So.... this week it’ll once again be a mid-week chore, this time to find an electrical short. These are clearly the pitfalls of running a car that is essentially a survivor. It’s never been disassembled or re-wired. Each of these issues forces me to improve the car though, so I guess it’s the path I’m on. I’ll update back here when I find the issue.
With consistent fuel pressure, came the return of Car consistency as well. (3) time hits: 11.351, 11.353, & 11.370. I can dial that!
Went a couple of rounds and was feeling real good when Murphy struck once again. Round 3: I rolled out of the water box and went to put the car in the beams. While turning off the line-lock and flipping on the 2-step, I decided to also pull on the running lights, as it was getting dark. As soon as I pulled the light switch, the car lost ignition and died immediately. Wouldn’t start, clearly no spark. Ugghh. After they pushed me back, I looked under the hood and immediately noticed that with the key on, I seemed to have everything except the ignition box. I run an MSD Digital 6-plus box. It has a light that confirms power, it was dark.
So.... this week it’ll once again be a mid-week chore, this time to find an electrical short. These are clearly the pitfalls of running a car that is essentially a survivor. It’s never been disassembled or re-wired. Each of these issues forces me to improve the car though, so I guess it’s the path I’m on. I’ll update back here when I find the issue.
bearman
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lw your doing great times are looking good and of course problems so up. but you are handling them and making better improvements lets be happy it wasn't a rod in the bottom of the pan. your on a good path
PRHeads
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Are the big red and black wires from the msd box attached directly to the battery?
I believe that’s still their preferred way of hooking the box to power......... plus it eliminates any of the car factory wiring.
Then the only connection with factory wiring is the wire from the switch to turn the box on/off.
I believe that’s still their preferred way of hooking the box to power......... plus it eliminates any of the car factory wiring.
Then the only connection with factory wiring is the wire from the switch to turn the box on/off.
LemonWedge
Well-Known Member
The MSD box is wired to the hot side of the starter relay, and grounded directly to the frame. I am admittedly an imbecile when it comes to electrical systems, and don’t remember a damn thing about wiring this system up 9 years ago. I have contacted a buddy that specializes in wiring, he’s going to come look at it and I’ll try to sponge up as much knowledge as I can.
I’m hoping it’s something inexpensive like a coil or ignition module, as after the fuel delivery issue, I really don’t have another $400 if it’s the MSD box (although I will do whatever is needed to get the car back up and going).
The car actually started when I went to take it off the trailer on Sunday. But it was laboring and clearly not right. I got it into the shop where it died, then it would’t start again. I’ll know more within the next day or so.
I’m hoping it’s something inexpensive like a coil or ignition module, as after the fuel delivery issue, I really don’t have another $400 if it’s the MSD box (although I will do whatever is needed to get the car back up and going).
The car actually started when I went to take it off the trailer on Sunday. But it was laboring and clearly not right. I got it into the shop where it died, then it would’t start again. I’ll know more within the next day or so.
Tex013
Well-Known Member
earth to frame may not be good enough . I always run earth to battery or a common earth cable that then connects to battery , like a boat . doesn't take much resistance to ruin your day
Tex
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The good from this is that it’s not intermittent, you’ll find the problem quicker.
bearman
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Question with all this stuff that is going to the battery direct should we have a remoter positive and negative studs mounted on frame or firewall. So the the battery isn't sitting there with 20 different positive and negative wires on them. Also if your battery is in the truck what do you do. I guess I would want a circuit breaker box or relay box to put these wires in. But will that cause issues for msd efi etc.
LemonWedge
Well-Known Member
We bypassed the MSD, and it fired right up. So, bad ignition box. It was a Digital 6-plus box that I bought it used 10 years ago. Since my 2-step is integrated into the box, I sorta need a new one. I just got off the phone with Summit and have a new 6al-2 box headed my way. It’ll be here Friday, I’ll once again be in the garage thrashing away on Friday night in order to race on Saturday.
Anyone have one of these 6al-2s, reviews?
Anyone have one of these 6al-2s, reviews?
Tex013
Well-Known Member
LemonWedge
Well-Known Member
Well, It’s been a thrash. That’s for sure. In the garage until 11:30 last night installing the new MSD ignition box. Go to start it: nothing. Ughh. Luckily it’s a night race, so I had the morning. Slept on it and back out this morning at 8:00 am. Got the ignition figured out (I’ll explain that later) only to run into a carb issue. Rear floats stuck ?!?!?! Re-set the float levels. Re-set the timing. Loomed all my wiring.... I think I’m ready. Car is loaded up and I’m headed out on time (miracle).
If effort and perseverance counts.... I should be in the winners circle sometime soon! .
If effort and perseverance counts.... I should be in the winners circle sometime soon! .
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Things will go well for you LW! Looking forward to seeing you go some rounds! Our entire race weekend is cancelled due to rains.
LemonWedge
Well-Known Member
Saturday night was fun. The car ran great! 5 passes:
11.289
11.289
11.268
11.253
11.233
All runs followed the weather to a T. Went a couple rounds then lit the red bulb, and badly. Before my foot was even off the brake pedal I knew I was WAY early. Oh well. Happy with the cars performance. I’ll just clean it up and get back after it next weekend.
Regarding wiring an MSD with a Mallory 57-series mag pickup distributor: For some reason, it wires up as if you were using a points distributor. MSD lists a wiring diagram for a mag-pickup dizzy, but it apparently doesn’t apply for the distributor I use. MSD tech on the phone told me they get this very phone call quite often. “Why don’t you list it in the directions and diagrams then”, I asked. “I dunno” was the response.
In any case, the big LemonWedge 67 has gotten through multiple issues recently and continues to answer the bell. Next week let’s see if the Driver can keep his act clean!
11.289
11.289
11.268
11.253
11.233
All runs followed the weather to a T. Went a couple rounds then lit the red bulb, and badly. Before my foot was even off the brake pedal I knew I was WAY early. Oh well. Happy with the cars performance. I’ll just clean it up and get back after it next weekend.
Regarding wiring an MSD with a Mallory 57-series mag pickup distributor: For some reason, it wires up as if you were using a points distributor. MSD lists a wiring diagram for a mag-pickup dizzy, but it apparently doesn’t apply for the distributor I use. MSD tech on the phone told me they get this very phone call quite often. “Why don’t you list it in the directions and diagrams then”, I asked. “I dunno” was the response.
In any case, the big LemonWedge 67 has gotten through multiple issues recently and continues to answer the bell. Next week let’s see if the Driver can keep his act clean!
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Good job LW, and that sure is some nice consistency! We all knew you would do well this weekend!
PRHeads
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I guess for me the question is....... would the original box have worked using the points wiring?
Btw.......Nice consistency !!
Btw.......Nice consistency !!
gtxracer
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Good consistent numbers Gary... If ya don't light the red bulb every now and then, ya ain't trying hard enough.
Bob
LemonWedge
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Well Dwayne, that would be the both embarrassing and worrisome part. The short answer is No, this wasn’t the issue with the other box. You see, nearly 10 years ago when I installed it, I ran into this same issue when I couldn’t get it to work. I called the MSD tech line back then.... that’s the phone call I reference in my earlier post. The fact that I did not in any way remember this as I was wiring the new box, and up until about the 5th crankshaft rotation with no fire evident was not only embarrassing and frustrating, but it actually made me think introspectively about my mental health. I literally never thought of it, but when the memory finally did come back, it hit me like a 5-lb hammer. Suddenly the whole wiring diagram was right there in my brain. (Use the points hot lead instead of the mag-pickup connection , with no tie from the distributor to the coil).
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