Considering a head swap, suggestions?

[Guest]

Could you enlighten me? Did YOU make the trigger, or adapt one from something else?

Made it. It was a colaboration between myself and my Grandfather, he's a Tool and Die maker by trade, though retired.

The genIII timing wheel behind the balancer is NOTHING like what you need to run teh coil packs.

The coil packs need a 7x reluctor, while the balancer mounted wheel is a 24x.

In this first pic, the notches were not cut, this was before the engine was installed.


Here the notches were cut:

[ForcedFirebird]

Again, you never cease to amaze me. What stopped you from using the 3.4 trigger? I have a friend that works in a CNC shop who is also a tool/die maker who's been helping me make parts. In fact, here's the flanges he made for boostedrs' manifolds...
http://www.thirdgen.org/techboard/at...d-100_2707.jpg

[Guest]

I have a 2.8 block.

3.4 blocks are expensive around here, it was much cheaper to build this crank trigger, whihc is also adjustable, than to spend $1000+ for a block, since I'd have to buy the complete long block, and all I needed was sthe block itself.

[SappySE107]

Would the trigger on the store work for a RWD setup?

[ForcedFirebird]

I have a 2.8 block.

3.4 blocks are expensive around here, it was much cheaper to build this crank trigger, whihc is also adjustable, than to spend $1000+ for a block, since I'd have to buy the complete long block, and all I needed was sthe block itself.

I guess what I am asking is if the 3.4 trigger could be used on the 2.8 or 3.1 block?

[ForcedFirebird]

Would the trigger on the store work for a RWD setup?

Looks like it, as long as the bolt pattern in the gen3.1 crank is the same (if not, that trigger could be easily modified).
Thanks for the heads up.

[94Camaro]

the 2.8/3.1/3.4 timing cover / water pump is identical. all you gotta do is use the timing cover / crank sensor from the 3.4L RWD engine and you are fine.

KISS philosophy.

-R

<--- 3.4L RWD Camaro w/ 3400 topend. the ONLY ONE I KNOW OF (fbody)

[ForcedFirebird]

the 2.8/3.1/3.4 timing cover / water pump is identical. all you gotta do is use the timing cover / crank sensor from the 3.4L RWD engine and you are fine.

KISS philosophy.

-R

<--- 3.4L RWD Camaro w/ 3400 topend. the ONLY ONE I KNOW OF (fbody)

Thanks!

EDIT: Boostedrs is building a 3400/3.1 hybrid now for his 3rd gen Camaro, and I'm looking for a good block to do the same . You may be the only one now (probably first) with a hybrid in your f-body, are you N/A or running boost/nos?

[94Camaro]

EDIT: Boostedrs is building a 3400/3.1 hybrid now for his 3rd gen Camaro, and I'm looking for a good block to do the same . You may be the only one now (probably first) with a hybrid in your f-body, are you N/A or running boost/nos?

yea i know i am on every board and i know who he is.

i am the first in the fbody world, i did this back in 2001 - and i dont know of anyone that has tried it since.

anyway... you wont have as many issues as ive had because your car is MPFI and not SFI. you might want to get custom headers made or go with ones from RKSport (the only company i know that fit the 3x00 heads)

good luck with it.
here are some pics:

http://camaro.adwire.com/modpics/

[Guest]

the 2.8/3.1/3.4 timing cover / water pump is identical. all you gotta do is use the timing cover / crank sensor from the 3.4L RWD engine and you are fine.

KISS philosophy.

-R

<--- 3.4L RWD Camaro w/ 3400 topend. the ONLY ONE I KNOW OF (fbody)

That WON'T work.

As I have already stated IN THIS THREAD, the timing chain crank sensor is NOT for the ignition, it is for the PCM, and is suppsed to decrease crank time at start up.

You can NOT just simply use the "3.4 crank trigger" in a 2.8/3.1 block, because these blocks do not have the crank trigger provison that the 3.4 block (and FWD blocks) has.

Do you really think I would have gone through all the trouble to make that external trigger, if I could simply have installed the sensor in the block? My crank (from a 3.1) has the trigger wheel in it, BTW.

[Guest]

Would the trigger on the store work for a RWD setup?

No, that won't work.

-The RWD balancer uses 4 bolts to attach the crank pulley.
-The trigger wheel would need to have a machined lip, on both sides, where the crank pulley gets centered. One side needs a lip, the other side a reciving groove.
-I don't know exactly how that sensor bracket is attached to the block, but may interfere with A.I.R. pump or other brackets. (I modified my A.I.R. Pump bracket to hold my alternator AND sandwich the sensor bracket to the block.
There are a bunch of accessor drive spacers that would be needed, including water pump spacer.

[CNCguy]

If I ever get caught up, I plan to work on several new items including a trigger setup for RWDs and engine mounts to put a LZ engine into a F-body. It just takes time and money.

[ForcedFirebird]

That WON'T work.

As I have already stated IN THIS THREAD, the timing chain crank sensor is NOT for the ignition, it is for the PCM, and is suppsed to decrease crank time at start up.

You can NOT just simply use the "3.4 crank trigger" in a 2.8/3.1 block, because these blocks do not have the crank trigger provison that the 3.4 block (and FWD blocks) has.

Do you really think I would have gone through all the trouble to make that external trigger, if I could simply have installed the sensor in the block? My crank (from a 3.1) has the trigger wheel in it, BTW.

What provisions are needed? Now I wish I would have pulled the timing cover off the 3.4 to look for myself. Since I'm installing MeagaSquirt, that RWD 3.4 trigger couln't be use still in my situation(if it sends signal, I can mod the MS to use it)? And could a FWD crank be used in my build to take advantage of the trigger on the store?

[Guest]

ARGGG, no.....

The crank trigger is in the MIDDLE of the block, IIRC between the 2main and #5 rod journals. The sensor will need to be installed in the side of the block, no where near the timing cover.

No the signal can not be manipulated to run the DIS ignition.

Even if you use a FWD crank, whichc BTW I AM, you still need to use the RWD balancer and pulley set-up, whihc is why the store crank trigger will not work.

But now I'm confused, are you using a 3.4 block or a 2.8/3.1 block?

[ForcedFirebird]

I want to use a 2.8/3.1 block, I have .030 forged pistons. You answered my question on what I thought was a crank trigger in a 3.4 I was taking apart.
EDIT: Well I guess finding something that can be adapted for the trigger is out of the question. Looks like I'll have to fab something ;p.