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.
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JohnM is the intelligent one, I'm just blazing fast.
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 always chicken out trying to find the top end of it but I'll tell you one thing the black Spiders are the fastest ones.
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.
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.
Best regards,
, 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.
Best regards,
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
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.
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.
Best regards,
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... Best regards,
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
Best regards,
Good Lord have mercy....I hope John doesn't read this thread.JohnM is the intelligent one, I'm just blazing fast.
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........
.
Ah.......you guys are so Sweet.
See...they are all programmed to fail. Murray lost that high end MSD 4edis...I lost a crane Hi6....Enrique lost the Jacobs. Nascar has always ran two ignition boxes, two batteries, and too left. Now if they had a Jacobs in there...there would be two as well.
I think the higher end you guys go you had better be worried about heat and placement........either that or you'll be worried about replacement! Murray I hope that autronic holds up....for my own selfish reasons!
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!
Best Regards,
John M
See...they are all programmed to fail. Murray lost that high end MSD 4edis...I lost a crane Hi6....Enrique lost the Jacobs. Nascar has always ran two ignition boxes, two batteries, and too left. Now if they had a Jacobs in there...there would be two as well.
I think the higher end you guys go you had better be worried about heat and placement........either that or you'll be worried about replacement!
Murray I hope that autronic holds up....for my own selfish reasons!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!
Best Regards,
John M
ROTFLMAO!!! I didn't know I was being recruited to the dark side, but you know, we do have the black spiders....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!
Best Regards,
John M
We must be in a cult!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 garageGood 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........
.
!!I thought in another thread we realized that the red ones were only faster if the driver was Italian....
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