I've got msd on 75 spider, but it isn't the 7al-2, I'd like to see where this thread goes with the jacobs system.
Me too!! *fingers crossed*I'd like to see where this thread goes with the jacobs system.
Murray had a MSD fail on him, so I was trying to keep all equal. MSD 6AL is cheaper in price than the jacobs, but not up to snuff:Don't have any reason to think the MSD or the Jacobs to be superior than the other. The Crane is also digital.
In regards to the pricing...I have not researched what the 7AL-2 would provide over the 6AL. Pricewise the 6AL is actually cheaper to setup than the Jacobs. There are modules that you can add onto the MSDs for launch control studder boxes, or in cabin retard/advance control, etc. But they cost extra above the main unit. A MSD 6AL with blaster coil can be had for under $300 if you shop around.
It will be interesting to hear what you think of the Jacobs. I personally always thought that the Crane was a little better than the MSD performance wise...seat of the pants. But after having the Crane fail on me....I went with MSD and it has been durable and without issues. My perceived difference may have only existed in my mind....but if it was real then perhaps the digital vs analog.
MSD also makes the switch to automatically switch between the bad and good box, wonder why...Thank you for the input Murray, much appreciated in keeping this thread intelligent!I have to say that I wasn't to impressed with MSD. I had a MSD Dis-4 in my car and the dang thing fried after 4 months of use. After surfing the MSD Tech Forms I found that I wasn't the only one who had this problem either.
The MSD tech recommended that the box should not be placed in an enclosed area that it needs air flowing over it.
Have you ever watch Nascar? Ever wonder why they have 2 igniton control box's on the dash.................so when if one fails they can easly switch over to the other one.
I think that one needs to consider the placement of what ever ignition control box they get. There is quite a few race heads that say the engine bay is too hot for the ignition control box and they should be placed inside the car.
I didn't another MSD I went to an Autronic 500R CID. I'm running a direct fire ignition (one coil per cylinder) so that limited my choices for a replacement ignition.
JohnM is the intelligent one, I'm just blazing fast.MSD also makes the switch to automatically switch between the bad and good box, wonder why...Thank you for the input Murray, much appreciated in keeping this thread intelligent!
I love your sense of humor Murray-blazing fast-how fast??? J/K. John M is definetly an intelligent one as well for bringing up good facts on both.JohnM is the intelligent one, I'm just blazing fast.
I don't know my speedo reads fast but I don't know how much. I switched from a 4.10 to a 4.56, what that does to the speedo I'm not sure. But FWIW been over a hundred on a down hill entrance ramp.I love your sense of humor Murray-blazing fast-how fast??? J/K. John M is definetly an intelligent one as well for bringing up good facts on both.
I will never ever, disagree with you on that one!!!!! Changing from 4.11 to 4.56, will decrease your 0-60mph time, but kills your top end speed.the black Spiders are the fastest ones.
Enrique I must thank you for a very, very insightful post! Thank you!Alright, before David and Murray praise John too much, and it goes to his head , let's see if we can get back on topic!
I can't really comment on the MSD, but I did have a Jacobs unit in my '84 Bosch L-Jetronic Spider for 5 years. I was extremely impressed by the unit. I installed in NJ and drove to the Columbus convention, and then to Middletown. After a week of driving around town, I decided that it was time to re-gap the plugs and try a slightly different setting, as recommended by Jacobs. I had originally gapped the plugs at 0.055, but when I checked them, only one was at that setting. The other three were at 0.050, 0.035 and 0.030, but the car was running better than ever! (I was running one oversize cam back then, although it didn't have the lift of the ones that I use today.) So I find that their claim that they monitor each cylinder, etc. has to be true.
I tried different settings, but anything between 0.050 and 0.055 worked best. The L-Jetronics have a lag between the time that one presses the accelerator and the car actually responds. The Jacobs improved the response dramatically. Furthermore, the gas mileage went up by an additional 2 mpg, minimum. The car ran really well with the Jacobs, certainly much better than stock. What was also nice was that it just took a simple bypass of the Jacobs unit to return the set-up to stock. Then, in case of any emergency, and to avoid the issue of indexing the plugs, and having to re-gap dramatically, if the Jacobs unit was bypassed, I just went with Lodge plugs. Jacobs recommends using the simplest of all the plugs, and not something like the Lodges, but it handled them beautifully. Every time I checked them, they looked great.
The only bad thing about the Jacobs was that it failed a couple of months after the 5-year warranty had expired. In the end, I decided not to replace it due to cost (it was ~ $500 back in 2001/2002) and the fact that I would loose points at a concours for having a non-original unit under the hood. Just to clarify, the Jacobs doesn't require that one remove any of the Spider components; it just sits on top of them. I don't know if that has changed now, as I haven't kept up with the current version.
A final note, I didn't vote on the poll, since having no experience with the other products, I don't have a basis for comparison. Nonetheless, I don't see how anyone can go wrong with Jacobs.
You are welcome ... Just be careful with the "baby seal hunter" - he thinks that Luke Skywalker is on this Board, and that he is Obi One...Enrique I must thank you for a very, very insightful post! Thank you!
ROTFLMAO!!!! I'm not worried about the "Baby Seal", nor should anyone else. If nothing else, he presses the issues at hand for more info and that shouldn't be overlooked.You are welcome ... Just be careful with the "baby seal hunter" - he thinks that Luke Skywalker is on this Board, and that he is Obi One...
Good Lord have mercy....I hope John doesn't read this thread.JohnM is the intelligent one, I'm just blazing fast.
ROTFLMAO!!! I didn't know I was being recruited to the dark side, but you know, we do have the black spiders.... We must be in a cult!Be careful David of Enrique. He thinks that he is Darth Vader and even told Murray the other day the he was Murray's father...calling Murray Luke. Something about the darkside and to use his anger over being hunted as baby seal meat to strengthen his use of the force. And I don't think its a coincidence that Enrique has his car painted up to represent the Thialand Racing Team. Enrique has been referring to his car lately as the "Thai Fighter". Scary I know!
Could post a pic of your Jacobs? Why does conedriver have to go to your place, why not drive it out to his or John M's and have them hook it up? John has a very nice garage!!Good Lord have mercy....I hope John doesn't read this thread.
Conedriver runs a Jacobs ignition, my 86 has one mounted on the fender....just aint hooked up. It came that way, the P.O. put lots of real nice stuff into this car and he seemed to know what he was doing. I'm just waiting for Conedriver to drive down to my house and open the garage and hook up my ignition system, hopefully he will put the tools away when he's done...he can grab a beer or two if he wants.....when he's done of course.
Dang it guys....y'all know RED spiders are the fastest........