MSD Opti worth the money??
Registered User
Joined: Jun 2002
Posts: 548
From: Mantua, NJ, USA
Referencing Injuner's description and Shoebox's picture, the MSD instructions tell you to pull the hose off that goes to the EGR control valve and insert the T between the fitting on the manifold and the elbow. No cutting of the exisitng vacuum line necessary.
The holes on the drivers side of the intake manifold are the same for all years. In the 93/94 cars, the lower/rear port is used for the PCV valve vacuum, connected by a short U-shaped hose. In the 95-97 cars, the vacuum for the PCV valve is run from a small port on the front of the manifold, under the throttle body. That frees up the lower/rear port on the side of the manifold for the Opti vent vacuum line. The port under the throttle body is there on the 94's as well, but it has a pipe plug in it. (Don't know if they had it on the 93's).
95-97 from Shoebox:
http://shbox.com/1/opti_vacuum_conn.jpg
95-97 from Shoebox:
http://shbox.com/1/opti_vacuum_conn.jpg
Registered User
Joined: Apr 2000
Posts: 1,070
From: Austin, TX or Texas State University at San Marcos
Well I went through 5 GM opti's in 5 years on my car and have been running the MSD with no problems yet. I couldn't get my car tuned right away and the option it has to add or take away timing on it is bad ***.
Registered User
Joined: Jan 1999
Posts: 225
We've been selling the Dynaspark version for a while and no complaints. It is a quality piece:
http://fasttoys.net/shop/product_inf...oducts_id=1253
http://fasttoys.net/shop/product_inf...oducts_id=1253
Thread Starter
Registered User
Joined: Mar 2005
Posts: 558
From: Columbia, MO
i just bought a complete MSD ignition system from summit. the sad thing about it was after i ordered it i was taking things off to get to the opti and right down by the opti in the vaccum line there was a hole burnt in the line....causing my opti problem. now that just sucks
Registered User
Joined: Jun 2002
Posts: 548
From: Mantua, NJ, USA
Will this part be avaialble for the 93-94 LT1? The description doesn't list it. Also, it is $90 more than the MSD which does support the 93-04 and adds the venting option. Not complaining, just noting the differences for anyone comparing.
Jeff
Jeff
We've been selling the Dynaspark version for a while and no complaints. It is a quality piece:
http://fasttoys.net/shop/product_inf...oducts_id=1253
http://fasttoys.net/shop/product_inf...oducts_id=1253
Registered User
Joined: Jan 1999
Posts: 225
Yes they have a 93-94 version as well shown in our catalog.
http://fasttoys.net/shop/product_inf...oducts_id=1252
http://fasttoys.net/shop/product_inf...oducts_id=1252
Last edited by Fast_Toys; Mar 7, 2007 at 11:41 AM.
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
The Dynaspark would appear to be a much more sturdy unit, billet case, upgraded bearing, etc. The MSD is closer to the stocker. I don't think I've ever seen anyone have a problem with the Dynaspark, but we've already had posts here about problems with the MSD.
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Joined: Jan 1999
Posts: 225
Dynaspark
Registered User
Joined: Dec 2006
Posts: 366
From: Michigan
I've been looking around for a new 94 opti as well, and here's what I've found: ac delco is $400-450, msd is about $500 or a little more, dynaspark is $600, also have heard good and bad about delco and msd but have not heard hardly any bad things about the dynaspark. For me, it makes sense to spend another 100 bucks to not have to replace it again in the near future.
Registered User
Joined: Jan 2007
Posts: 1,027
From: Lansing, MI via Bowling Green, KY: Dalton, GA: Nashville, TN & Atlanta, GA
Doesn't the MSD have a billet case and upgraded bearing? If they're comparable pieces, the MSD can be had for quite a bit less than the Dynaspark.
Last edited by BTC; Mar 9, 2007 at 08:10 AM.
Registered User
Joined: Jun 2002
Posts: 548
From: Mantua, NJ, USA
The MSD has a billet case but I am not sure about the bearing. I pulled my motor last week for a complete rebuild and I will be opening up my MSD (it has about 11,000 miles on it) to see how it is holding up. I will post what I find for anyone who is interested.