i installed the delteq/MSD DIS4 in the engine bay toward the end of this week.

I mounted the set of cadillac coils to the firewall on the driver's side behind the engine as far up as I could. it's completely out of the way and i don't have to deal with running the passenger side plug wires around the accessory bracket.

 

Got pix? I'd like to see how it fits. IIRC somebody mounted the 8 LTCC coils along the lower edge of the radiator. I don't mind having more coils, I just don't want to fight with more than the alternator to get the valve covers off.

http://para.noid.org/~lj/July2004.jpg

 

definitely isn't going to get in the way of pulling the valve covers... I'm getting ready to head out for the night, but I'll snap pics tomorrow and post 'em. it's pretty slick.

 

I am having a very similar problem. MSD Digital 6, HVC-II coil, my rotor looked worse than that.. I am running DFI Gen 7 .. I was getting arc-over that would cause the car to fire when it wasn';t supposed to. In a batch fire system, that can be a huge problem.

I just replaced my opti/rotor with summit's as MSD's is on back order and I promised my son a ride in my car for his birthday next a week from monday. Let me know how you make out.

Good luck!

--Sean

 

Fwiw, I use a stock opti (with riveted rotor contact), stock coil, MSD Digital 6, BS3 engine management, and all is well at 24psi.

IMO your ignition should be well up to task.

What does your valvetrain consist of? Have you tested a spring lately?

 

Now that you mounted them that far back...how is access to them in the event you need to change a coil? Any issues w/ heat being on the firewall now? I'd think I'd like to try that myself but wasn't sure of the clearance. You drop those in after the engine was installed or after? That's got to be a tight fit.

 

actually, I was wrong... I can pick the valve cover up, but not high enough to pull it over the exhaust rocker on #7...

I don't think I can move it over a half inch to give it plenty of clearance either. (Or if I wasn't using the DIS-4 Plus, it would probably fit too -- the coils are about 1.25" taller because of the MSD interface risers or whatever you call those things).

As far as a place where the coils won't get in the way, mine came with a bracket that mounts to the bottom of the passenger side fan... Since that fan sits up higher, the bottom of the coils would be as high as the bottom of the driver's side fan...

I'm going to try to give myself enough clearance to pull the driver's side valve cover off... If I get it to work, I'll snap some pics... If I can't do it, I'll try to mock it up down in front on the fan bracket in the middle of a mess of intercooler tubing.

 

I'm planning to try the Delteq (4 coils) system. I plan to mount them on top of the passenger side valve cover but they have several mounting options if that doesn't work for you. Here are some pics: http://elitesparkplugs.com/Projectcars.html

 

Well, my problem seems to have gone away with the new cap and rotor.. We'll see how long it lasts before it has to be replaced again. LJ, how you making out?

 

I have the delteq with no rev limiter and I need one, funny ha. LJ has an unwanted rev limiter. LJ can I borrow yours?

Anyway, this post caught my interest due to the rev limiter problem with the delteq, there is none, just the stock pcm one which cuts fuel?

Anyway, just glancing at the MSD DIS 4 units at Summit, they have a HO version, part #62153 which is made specifically for high boost/nitrous use. LJ you should check this out if you decide to go with the delteq. Also, I have a cadillac coil pack for you if you are interested.

BTW, I am extemely happy with the delteq ignition system. IT has worked perfectly, not 1 misfire yet and it revs to no tomorrow. I got the radiator mounted one, keeps the coils cool. I installed a new opti too at the same time while I was doing some other work on my motor.

The number one problem all these years with my gasoline engines is the ignition, no doubt about it.

 

I am also VERY happy with the Delteq. It made a HUGE difference. I ended up mounting it where the stock airbox was. Very easy to get to that way. I'm still getting some misfiring at WOT but I think the spark plugs are to blame. I've been told I need to run a colder plug. What are you guys running that's better than the NGK TR6?

 

The TR6 is really 2 steps colder than stock already. Why are you running them? N2O or blower?

 

Anything else required to go to MSD DIS 4 route? Just curious as to who has done it and what all is involved. Thanks.

 

Don't get the DIS-4 HO if you plan to daily drive it... If you read the forums, they are meant for drag race only and people keep burning up the boxes when they use them for daily drivers. Get PN 65152.

The DIS-4 gives you rev limiter, 2-step, and a one-wire ignition cut-off (works perfect with a fuel pressure safety switch).

For a nice clean installation, I used part #8870: http://www.msdignition.com/install_access_dis_1.htm

Those mount between the coils and the delteq mounting bracket to give you connections to and from the coils. They come with the correct size longer bolts for coil mounting.

Here's a pic of the components:

http://www.lt1.org/ignition.jpg

The pictures on MSD's site are not correct. Even though the picture above matches MSD"s picture for PN 65153, mine is PN 65152 (non-HO version)

 

Thanks Roadie. You think you could post some pics of your install when it's done? I'd just like to see how you mounted the coil rack way in the back of the firewall. Pretty sure it won't be the best picture but I'd still like to see. Thanks again.