External Crank Trigger

[CNCguy]

ok so the trigger is for the 3500 crank because it has a diff setup that eliminates the in block sensor for the lobe on the crank is that right?

Correct... The 3500 has a 52X reluctor. Using the external trigger allows you to use an older ECM on the newer engine and also gives you the ability to change the initial timing.

Edit: Oops 56x like Brad said

[bszopi]

Yes. The 3500 trigger is a 56x trigger versus the old 7x trigger. You can fab a new trigger ring to put on the crank, and then fab a spacer to set the old style sensor the correct distance from the new trigger. Or, you can just buy the external trigger.

[gectek]

ok so has anyone tried test fitting on a 99+ ga?

[Superdave]

and yet another setback for me...



the TCE setup does not clear the Jbody rear mount. I'll have to redesign the body mount when i can get a spare one to hack up.

[CNCguy]

and yet another setback for me...the TCE setup does not clear the Jbody rear mount. I'll have to redesign the body mount when i can get a spare one to hack up.

How much does the frame need to be notched to clear the bracket? I cannot tell from the pic and but it doesn't appear to need much removed. Could the face of the UDP be cut off a little as well as the legs of the adapter? That would move the CPS closer to the block. Also, the reluctor wheel sits lower in stock dampner compared to the UDP unit, I would guess about 1/8" or so.

The original design didn't use a seperate reluctor wheel. Instead, notches were to be machined in the outside of the stock dampner. It kept everything about 3/8" closer to the block but left a small chance of spark error if the dampner moved. That would also be an option.

[Superdave]

I'm planning on cutting the mount and just bending it 90°, welding in a gusset and drilling a new hole to mount it to.

after measuring the TCE setup will clear the frame by about 1/8" or so but the mount has to be completely out of the way. I've got holiday stuff to deal with but Monday night i should be able to make it out there and make the adjustments.

I'll post pics

[Superdave]

here is a quick pic. I snuck out to the garage earlier and made some sparks fly...




i might bend it up a little more but right now it's dead on with a hole in the subframe that i can use to run a bolt through.

[93ztwo4]

crap eh. u think u could get a few more pics for me dave. u could even pm them to me on v6. is there anyways to use a universal external sencer

[Z2_4cams]

hey Dave. is that issue happen when using the TCE trigger with unmodified legs? when using the stock dampner the legs will have to be trimmed to get it to line up, I think that will let it clear the mount.

[Superdave]

Yah, i haven't touched the legs. It lines up perfect with my UDP so....


It's only 1/8" difference so i'm sure you'll have to modify that mount similar to what i did.

Mine still isn't enough to clear, I'm going to bring it to work and make some adjustments with the plasma cutter and test fit it again this week. I still need to weld that rear mount solid. I'll be cutting it close and i can't afford any engine movement.. lol

[SappySE107]

Maybe a custom mount would work then? It would work for all 87-94 J bodies correct?

[Superdave]

Maybe a custom mount would work then? It would work for all 87-94 J bodies correct?

5 speed ones.. the auto ones have a slightly different mount. Different part number atleast...

I'll get more pics up asap.

[Superdave]

ok, with the rear mount int he exact location it was int he previous pic... the engine actually fits but then i ran into another problem.



the TCE setup was dead against the body of the car. So after some work with my angle grinder and a BFH i made some clearance. I still need to make a little more but with solid mounts i'm not going to worry about it much more.

[wasas9]

icky dave! Looks like i get to have some fun in a couple weeks making that thing fit!!

[Superdave]

icky dave! Looks like i get to have some fun in a couple weeks making that thing fit!!

Get a BIG hammer.. my 10lb sledge had a hard time.. 20lb should do the trick


or a plasma cutter