some 3.6 conversion questions

[matty74]

I am doing a 3.6 engine build and it is going in my 74 but I am going to run PMO ITB's and megasquirt2, 2 x MSD and the stock dizzy.

Now thw MS2 kit comes with a harness, which I will set up myself but I am a bkit unsure about a few other things that I need to do as a part of the conversion.

1. Do I need fly wheel to mate up to the 915? Can I just use a 3.0 flywheel and put the rev sensor on the cam shaft or pully rather than the flywheel.

2. Do I still need a harness engine to car?

3. apart from oil likes etc.. what other conversion bits do I need?

help apprciated

Matt

[Kevin Stewart]

do a search you will find plenty on this

instant-g.com

also patrick motor sports hes kinda grumpy

you will need a flywheel

not sure on what you got going on the harness

you will need to change some sending units

exhaust is a bit of a hassle

altered cross member search my name i did a post on my 3.6 conversion, Kevin

[matty74]

exhaust wise I have a set of 1.75 headers and 2in/out muffler.

So I can't just use a stock 3.0 frly wheel and put the sensor on the pulley?

[Kevin Stewart]

when i changed my fly wheel i remember them looking totaly different, it may have a different bolt pattern. i know i put a 7lb flywheel in and took really heavy wheel out. i have never heard of putting a sensor on a 3.0 flywheel i suppose it could be done seems like a lot of work and a lot time when i lighten fly wheel will help the rotating mass.

big tail pipes LOUD car 2-2.5 lots quiter

[matty74]

I would'nt put the sensor on the 3.0 flywheel, but on the pulley or camshaft like the clewitt kit

[DW SD]

The 3.6 conversion flywheel has a different bolt pattern on the crankshaft and has the teeth for the flywheel position sensor. Yes, you'd need one compatible with the 915. Several companies sell conversion flywheels.

Jamie Novak told me you can likely program megasquirt to read the flywheel position sensors if you code in the profile of the teeth and tooth count, etc. It doesn't do this out of the box, but needs adaptation. This would seem cheaper not considering hours spent to adding another toothed wheel to the crankshaft. I have no idea how complicated this modification might be.

If it were me, I'd still use the factory engine harness. This would make future removals much simpler. Much of your factory sensors will still be used, as well, like:
temp, oil pressure, alternator connections, starter solenoid, etc.

I think you could probably use much of the factory harness, too. Factory uses connections to injectors, that would still be used.

Things like MAF, Idle air controller would be eliminated. But, other connections would likely be necessary, so maybe you could reuse some of the wiring?

Good luck, should be a fun project!
Doug

[matty74]

But can I run the rev counter off the pulley rather than the flywheel?

I'm asking this because the caseI have has slight damage being the flywheel sensor mount was broken off, so rather than trying to fix if I can run the sensor of the camshaft or pulley would solve my problem.

[Kevin Stewart]

i would say no because the pulley is smaller and the eye timing would be off, Kevin

[DW SD]

Originally Posted by matty74

But can I run the rev counter off the pulley rather than the flywheel?

I'm asking this because the caseI have has slight damage being the flywheel sensor mount was broken off, so rather than trying to fix if I can run the sensor of the camshaft or pulley would solve my problem.

Sure, you can run the one from Clewett or Smart racing, or a variety of other sources.
Even if you re-mounted the factory one or adapted a new one, it will still take some fabrication.
Plenty of options.

Regardless, you'll need a conversion flywheel. I was thinking it would be cheaper to adapt the factory flywheel sensor since the conversion flywheels will most likely have the teeth for the sensor.

Doug

[Joe Bob]

I wouldn't buy spit from Patrick Motor Sports.

Try Kennedy Engineered for a conversion flywheel....