OPTI - MSD or Dyna?
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
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From: Springfield PA
Philly 'Burbs Events Coordinator
OPTI - MSD or Dyna?
I've been battling poor drivability since last year.
http://forums.corvetteforum.com/show....php?t=1574890
I done a few things with no real fix. Took it to my mechanic today and he says its the opti. Now I'm pissed as it only has 30K on it since I did it 4.5 years ago. Seems it should last longer, I replaced the orig at 86K and it wasn't bad the water pump was, I just did the opti then for reliability.
When my mechanic called around for some pricing he was told that there have been some problems with some of the new OEM units. Since the opti is not as accessable as say a slave cylinder
and since the slave cylinder BS proved to me that just because it's new in box doesn't mean it's a good unit 
I want to get one that should last.
Should I go with the Dyna or the MSD, opinions please
Thanks in advance,
Rex
http://forums.corvetteforum.com/show....php?t=1574890
I done a few things with no real fix. Took it to my mechanic today and he says its the opti. Now I'm pissed as it only has 30K on it since I did it 4.5 years ago. Seems it should last longer, I replaced the orig at 86K and it wasn't bad the water pump was, I just did the opti then for reliability.
When my mechanic called around for some pricing he was told that there have been some problems with some of the new OEM units. Since the opti is not as accessable as say a slave cylinder
and since the slave cylinder BS proved to me that just because it's new in box doesn't mean it's a good unit I want to get one that should last.Should I go with the Dyna or the MSD, opinions please
Thanks in advance,
Rex
Last edited by Rex Ruby; Apr 18, 2007 at 01:45 PM.
Advanced
Joined: Dec 2004
Posts: 87
Likes: 0
From: Columbus Ohio
Rex,
I put in a Dyna-spark in my '93 a little under 18k. Not many miles since, but it seems tougher than the OEM. Hard to quantify.
What I liked most vs. OEM, was the cross ventalation. The Dyna comes w/ everything you need to plumb into the vacuum circuit and into the intake tunnel to grab the fresh air. Looks normal too, not added on, except for the line pulling in the air, but only a hardcore vette guy will notice.
My old OEM unit was pretty scuzzy inside due to no air flow, which no doubt killed it (rusty and all).
JMHO
I put in a Dyna-spark in my '93 a little under 18k. Not many miles since, but it seems tougher than the OEM. Hard to quantify.
What I liked most vs. OEM, was the cross ventalation. The Dyna comes w/ everything you need to plumb into the vacuum circuit and into the intake tunnel to grab the fresh air. Looks normal too, not added on, except for the line pulling in the air, but only a hardcore vette guy will notice.
My old OEM unit was pretty scuzzy inside due to no air flow, which no doubt killed it (rusty and all).
JMHO
Le Mans Master
Joined: May 2005
Posts: 7,328
Likes: 2,249
From: Central Maryland
The DynaSpark has been around longer, and has a good record in the field. I installed one on my '94 a few years ago, and it's been great. They sell direct. Last I heard, they were selling for around $600, but check that. Competition from MSD might have pushed their price down by now.
The MSD appears to be gaining traction in the marketplace. Last I heard, it was selling for around $500, but check that, too.
You'd almost surely be better of with either the Dyna or the MSD rather than the OEM Gen1 unit.
Be well,
SJW
The MSD appears to be gaining traction in the marketplace. Last I heard, it was selling for around $500, but check that, too.
You'd almost surely be better of with either the Dyna or the MSD rather than the OEM Gen1 unit.
Be well,
SJW
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
Rex,
I put in a Dyna-spark in my '93 a little under 18k. Not many miles since, but it seems tougher than the OEM. Hard to quantify.
What I liked most vs. OEM, was the cross ventalation. The Dyna comes w/ everything you need to plumb into the vacuum circuit and into the intake tunnel to grab the fresh air. Looks normal too, not added on, except for the line pulling in the air, but only a hardcore vette guy will notice.
My old OEM unit was pretty scuzzy inside due to no air flow, which no doubt killed it (rusty and all).
JMHO
I put in a Dyna-spark in my '93 a little under 18k. Not many miles since, but it seems tougher than the OEM. Hard to quantify.
What I liked most vs. OEM, was the cross ventalation. The Dyna comes w/ everything you need to plumb into the vacuum circuit and into the intake tunnel to grab the fresh air. Looks normal too, not added on, except for the line pulling in the air, but only a hardcore vette guy will notice.
My old OEM unit was pretty scuzzy inside due to no air flow, which no doubt killed it (rusty and all).
JMHO
The DynaSpark has been around longer, and has a good record in the field. I installed one on my '94 a few years ago, and it's been great. They sell direct. Last I heard, they were selling for around $600, but check that. Competition from MSD might have pushed their price down by now.
The MSD appears to be gaining traction in the marketplace. Last I heard, it was selling for around $500, but check that, too.
You'd almost surely be better of with either the Dyna or the MSD rather than the OEM Gen1 unit.
Be well,
SJW
The MSD appears to be gaining traction in the marketplace. Last I heard, it was selling for around $500, but check that, too.
You'd almost surely be better of with either the Dyna or the MSD rather than the OEM Gen1 unit.
Be well,
SJW
THe accel is only offered for Gen2
Race Director
Joined: Sep 2001
Posts: 14,653
Likes: 750
From: NEwhere Ohio
I've been battling poor drivability since last year.
http://forums.corvetteforum.com/show....php?t=1574890
I done a few things with no real fix. Took it to my mechanic today and he says its the opti. Now I'm pissed as it only has 30K on it since I did it 4.5 years ago. Seems it should last longer, I replaced the orig at 86K and it wasn't bad the water pump was, I just did the opti then for reliability.
When my mechanic called around for some pricing he was told that there have been some problems with some of the new OEM units. Since the opti is not as accessable as say a slave cylinder and since the slave cylinder BS proved to me that just because it's new in box doesn't mean it's a good unit I want to get one that should last.
Should I go with the Dyna or the MSD, opinions please
Thanks in advance,
Rex
http://forums.corvetteforum.com/show....php?t=1574890
I done a few things with no real fix. Took it to my mechanic today and he says its the opti. Now I'm pissed as it only has 30K on it since I did it 4.5 years ago. Seems it should last longer, I replaced the orig at 86K and it wasn't bad the water pump was, I just did the opti then for reliability.
When my mechanic called around for some pricing he was told that there have been some problems with some of the new OEM units. Since the opti is not as accessable as say a slave cylinder
and since the slave cylinder BS proved to me that just because it's new in box doesn't mean it's a good unit I want to get one that should last.Should I go with the Dyna or the MSD, opinions please
Thanks in advance,
Rex
I can attest to some major issues with MSD products. Specifically Digital 6 plus ignition boxes that failed after 20-30 miles (3 in a row actually) and also brand new MSD 8.5mm wires that spark arc'd against the water pump housing.
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Joined: Aug 2006
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From: Stuttgart
I installed the MSD about 6 weeks ago. I liked the quality of the MSD unit, and so far have had no problems...but we are only talking a couple of hundred miles. The one thing I did make a mistake on was ensuring the cap was on completly. The o-ring seal is pretty thick and the torex screws can be a pain in the *** to tighten down with the simple tool they provide. IMHO no a reason not to buy.
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From: MANDEVILLE, LA La
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If cost is no object, go with the Dynaspark.
If you're a little more budget-minded, do the MSD.
Of the two, my nod goes to the Dynaspark, but both units are superior to the O.E.M. AC/Delco Optis.
If you're a little more budget-minded, do the MSD.
Of the two, my nod goes to the Dynaspark, but both units are superior to the O.E.M. AC/Delco Optis.
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
I decided on the MSD. Main reason was with the Dyna you have to uninstall it and send it back if you ever want to put a new cap on.
I'll let you all know how it goes, going out to the garage now to tear things down, part will be in at 11AM tomorrow and am planning on having things all back together mid afternoon. Alos I am going to replace the coil with an MSD unit.
Thanks for all the input
I'll let you all know how it goes, going out to the garage now to tear things down, part will be in at 11AM tomorrow and am planning on having things all back together mid afternoon. Alos I am going to replace the coil with an MSD unit.
Thanks for all the input
Melting Slicks
Joined: Apr 2001
Posts: 2,877
Likes: 7
I decided on the MSD. Main reason was with the Dyna you have to uninstall it and send it back if you ever want to put a new cap on.
I'll let you all know how it goes, going out to the garage now to tear things down, part will be in at 11AM tomorrow and am planning on having things all back together mid afternoon. Alos I am going to replace the coil with an MSD unit.
Thanks for all the input
I'll let you all know how it goes, going out to the garage now to tear things down, part will be in at 11AM tomorrow and am planning on having things all back together mid afternoon. Alos I am going to replace the coil with an MSD unit.
Thanks for all the input
Hey John,
Let me know how it goes. I am about to take the front of my motor apart and was going to do an upgrade to the opti while in there. Since my opti is still fine with only 5k miles it will probably make sense to look into the delteq and go that route.
I think Frank (mr mojo) runs this in one of his cars and likes from what I can remember
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Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
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From: Springfield PA
Philly 'Burbs Events Coordinator
Here is what I am thinking,
Maybe the fuel pump is going or maybe it's the computer