RV* 4.6 Serpentine Trigger Wheel

garrycol · Post by **garrycol** » Wed Apr 06, 2016 6:35 am

A sort of related question.

Just at the stage of aligning the trigger wheel and the question is what to do with the mud/splash guard that fits between the crankshaft pulley and the block - designed to keep course mud etc away from the front crankshaft oil seal.

Maybe not so important on a road going engine but my engine is going in a full on 4wd.

So how important is the mud deflection shield. It will be just a bit time consuming to modify it to fit the the shield to the back of the trigger wheel so if not really needed I would prefer not to.

Thanks

Garry

Quagmire · Post by **Quagmire** » Wed Apr 06, 2016 11:04 am

Is this on your 101?

I'd say it'd probably be ok without it as the engine is relatively high, unless you are planning on doing some real mud plugging in it?

garrycol · Post by **garrycol** » Wed Apr 06, 2016 10:31 pm

Yes it is going into the 101 - my thinking was the same as yours but then I remembered the front diff is right under there and pushes water and mud vertically but then the pulley itself and the trigger wheel should provide some protection.

Thanks for the input.

Garry

unstable load · Post by **unstable load** » Thu Apr 07, 2016 7:28 am

What about a "splash plate" under the front of the engine to stop anything being flung up?
Depending on the level of mud plugging you plan on doing, it could also help with sticks etc being pushed up into the front of the engine area, too.

garrycol · Post by **garrycol** » Thu Apr 07, 2016 9:20 am

Yes thanks - that was something I was thinking about.

cheers

Ian Anderson · Post by **Ian Anderson** » Thu Apr 07, 2016 4:46 pm

I seem to remember Ralph from a few years back who had a flywheel, standard one from a landis from memory, that had the trigger wheel built into it on the engine side

That would avoid the front dress problems and mud ingress

Ian

unstable load · Post by **unstable load** » Thu Apr 07, 2016 5:12 pm

Ian Anderson wrote:I seem to remember Ralph from a few years back who had a flywheel, standard one from a landis from memory, that had the trigger wheel built into it on the engine side

That would avoid the front dress problems and mud ingress

Ian

Now that you mention it, the 4.6 Landies should have that flywheel as standard fit.

ChrisJC · Post by **ChrisJC** » Thu Apr 07, 2016 5:44 pm

GEMS engines have a 36-1 trigger wheel on the flywheel or flex-plate.

Thor has 60-1, so is a bit different (might be 60-2, I can't remember).

Chris.

DEVONMAN · Post by **DEVONMAN** » Fri Apr 08, 2016 8:03 am

These manual flywheels are pretty rare because most were auto boxes.
But, it must some how be possible to mount the bits from a flexplate onto the back of a manual flywheel

DaveEFI · Post by **DaveEFI** » Fri Apr 08, 2016 8:37 am

DEVONMAN wrote:These manual flywheels are pretty rare because most were auto boxes.
But, it must some how be possible to mount the bits from a flexplate onto the back of a manual flywheel

I'd say that would be more work than fitting a trigger wheel to the crank pulley?

On my SD1, I swapped the steering pump one which had the mud shield (or whatever) for a spare AC one which is the same but plain. That gave me room for a standard RV8 trigger wheel.

garrycol · Post by **garrycol** » Fri Apr 08, 2016 10:02 am

As I didn't have a 4.6 flywheel, crankshaft sensor and it is going EDIS 8 and MS3 it was cheaper and easier to go a trigger wheel.

You can take the little "trigger ring" off an auto ring gear/flex plate and rivet to any manual RV8 flywheel if you want to use an original crank sensor - the hardest bit is working out the positioning - still easier to put a trigger wheel on though.