LS1 coil swap

[tmorgan4]

Has anyone successfully swapped the Infiniti coils for something like a LS1 coil that doesn't sit right over the plug? I'd LOVE to have a wire connecting the coil to the plug and not have to remove 4 bolts per coil every time I want to pull the plugs.

I've got a lot of things going for this....I broke 2 of my stock coils, the wiring harnesses are cracking and hard to source, a few of the bolts that hold the coils on are broken off in the valve cover, and it would save a ton of time when I need to pull plugs.

It doesn't seem very difficult, but if someone else has already done all the work......

[tmorgan4]

There are a few write ups that I've looked over that can be adapted to the V8s. It looks like they use the same ignitors so just need to make two of everything.

Can someone explain why the "Dwell" on the ECU needs to be modified after the coils are swapped?

[gs14racer]

i cant offer anyhelp on the dwell issue, but i can tell you that i only have one bolt holding each coilpack on for the last two swaps without any problems.

And for the harness , i had the same prblem and just madeone from scratch, much easier and looked better too

probably no help but just throwing it out there.

[tmorgan4]

Jerry you're always helpful whether you think you are or not! I do remember seeing the harnesses you built a while back and they looked great! I get a little jealous sometimes of the domestic guys that have websites that sell every single connector in the wiring harness. Oh well...easy enough to switch all my broken ones over!!!

I think I may swap coils anyway. It will probably only be a few hundred bucks and save a huge hassle in the end. Looks like LS2 coils are actually the way to go and there are sets on eBay for under 200.

I'd like to find what the coil dwell time is set at on an unmodified VH45 ECU. Sounds like a 5ms dwell is what these LS2 coils really want. If the ECU has a much lower dwell time than this, can it be upped with a re-flashed ECU?

[Chrispy300]

You can change dwell in Nistune, so should be easy enough.

[tmorgan4]

It just seems kind of crazy to be running Nistune on an otherwise completely stock engine but I guess I'd be ready to upgrade in the future. Want to sell me your ECU Jerry????

[tmorgan4]

Well it looks like I'm doing it. I'm the proud new owner of the sought after LS2 truck coils with the heatsink. Probably be a little while until they're installed but I'll try and take a few pictures and write a few things down if anyone is interested. Just need to figure out where to mount them!!!

[SSDwellah]

... I get a little jealous sometimes of the domestic guys that have websites that sell every single connector in the wiring harness....

I seem to remember these folks selling many types of connectors that are used for a lot of foreign cars, including Nissans. Not necessarily the cheapest though http://www.dataspares.com/

[hannibal]

It just seems kind of crazy to be running Nistune on an otherwise completely stock engine but I guess I'd be ready to upgrade in the future. Want to sell me your ECU Jerry????

I dont think its crazy at all. Getting to know the software and ECU and some practice tuning is not a waste IMO.

[darinz]

One thing I really like about the bolt down coils is they are very water proof. I've had mine running comletly submerged many times and never once had an electrical issue. I have my ecu mounted on top of the dash as on many occasions I've had water about half way up the doors on the inside of the truck. On the outside that normally means over the bonnet.

I know you guys love the factory ecu but going completly stand alone and doing a complete engine rewire makes things a lot simplier and far more reliable. I've got mine (well the old truck) so that there was plugs to the sensors, coils, injectors etc and then nothing until the ecu which is inside and away from all water, heat etc. A fair bit of work but so worth it if you are off road and in the mud and water like I am. (and I assume that is why you are building you Pathfinder )

[tmorgan4]

Thank you for all the replies!!!

Darinz.....I have really thought about going to a fully aftermarket engine management system but there are just a few things that I'm worried about. I've been watching your build on Pirate. My Pathfinder probably won't be seeing a lot of deep water and hopefully no mud since I'm really building it as a rock crawler. I can't wait to see how much torque I have with a 10.3:1 low ratio in my Atlas.

I guess I better start a new thread......