Wayne's boosted 8 project

[Mr Spiller]

When we get to a show or trackday ill bring em along for you.
I wouldnt use them on a renny powered 8 but a turbod rew powered 8 ...400plus should be able to get them hot enough.
Was fun with them on mine ....loose like every first lap.

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Sounds like a plan


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[Mr Spiller]

After a bit of research , not by me . It seems the alternator relocate bracket is made for FC not FD engine .
It sits back 28mm too far back .
So plan is to try and weld another wheel on front of the original , that will line up fine .
Hope it works , or maybe get a longer wheel from somewhere .

Does anyone have a broken alternator they have laying around that I could have / buy for the wheel ?
Please
In meantime will
Check if one of the RX8 is the same


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[Grant Monkhouse]

Which alternator bracket did you get?

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[Mr Spiller]

Which alternator bracket did you get?

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It was on the engine when I bought it , so would prefer to utilise it if I could .


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[Grant Monkhouse]

You could change the front timing cover to an FC and it would fit perfect it think.

That bracket is prety much the same as mine just a different company

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[Mr Spiller]

You could change the front timing cover to an FC and it would fit perfect it think.

That bracket is prety much the same as mine just a different company

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Hmmmm
Got me thinking now
If I changed to rx8 one and that worked , I’d have right plug for eccentric shaft sensor for the loom . I think it’s just a bit of machining go to side cover
Cold shout Grant


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[clive]

Wayne don’t fit the side mount, read my thread and you will see it was one of the biggest mistakes I made.

I didn't realise the ECU regulates the Alternator not from inside the alternator, if I had to do it all again, I would have engineered the stock alternator on the car.

Initially I wired up the stock RX-8 alternator wiring before making its own stand alone circuit, lucky I did just grenade the ECU.

The original thinking was from a Race car point of view, use a lightweight alternator  and keep the weight low in the chassis. The stock alternator wont fit down the side.

Also the small alternator had to be remanufactured to give more output as it could not keep up with the draw of two fuel pumps, damn thing ended up costing a fortune. 

Grant you may well have the same issues with your MX-5 car if the ECU regulates the alternator the same way.
Hope this helps

[Grant Monkhouse]

Wayne don’t fit the side mount, read my thread and you will see it was one of the biggest mistakes I made.

I didn't realise the ECU regulates the Alternator not from inside the alternator, if I had to do it all again, I would have engineered the stock alternator on the car.

Initially I wired up the stock RX-8 alternator wiring before making its own stand alone circuit, lucky I did just grenade the ECU.

The original thinking was from a Race car point of view, use a lightweight alternator  and keep the weight low in the chassis. The stock alternator wont fit down the side.

Also the small alternator had to be remanufactured to give more output as it could not keep up with the draw of two fuel pumps, damn thing ended up costing a fortune. 

Grant you may well have the same issues with your MX-5 car if the ECU regulates the alternator the same way.
Hope this helps

Clive I don't think I'm going to be running an alternator anyway as I have to mount the mechanical fuel pump in the side position where the side mount alternator kit would place it.

Although I have seen some trick things of having the alternator mounted at the rear of the car running a belt off the drive shaft I think nascars do it

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[clive]

The alternator off the prop is an old one from way back, lots of club car specials etc used  and I considered that at one stage when I was having issues,

But it would be a huge task as a metal prop would have been needed to mount a belt drive, plus a big hole in the floor in front of the fuel tank on the passenger side as there's no room under the floor, so effectively the alternator would have been inside the car with a box over it.

OK on a race car as all of this is not a problem,  but on a road car you could end up in traffic stationary and no charge coming out of the alternator.

p.s. it cant really run off the drive shaft because of the angle changes unless the alternator goes up and down in the same arc 

[Grant Monkhouse]

If it was mounted to the diff, the alternator would move with the movement of the diff?

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[clive]

Yes,  front diff flange (which is the normal way) or diff output flange, space is your enemy 

[lennycarloff]

I have seen you can get water pump delete with alternator mount from built2apex.com I have no Idea if there any good but it's an option.

[Mr Spiller]

I have seen you can get water pump delete with alternator mount from built2apex.com I have no Idea if there any good but it's an option.

Thanks Lenny
I’ll look into it


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[Mr Spiller]

Wayne don’t fit the side mount, read my thread and you will see it was one of the biggest mistakes I made.

I didn't realise the ECU regulates the Alternator not from inside the alternator, if I had to do it all again, I would have engineered the stock alternator on the car.

Initially I wired up the stock RX-8 alternator wiring before making its own stand alone circuit, lucky I did just grenade the ECU.

The original thinking was from a Race car point of view, use a lightweight alternator  and keep the weight low in the chassis. The stock alternator wont fit down the side.

Also the small alternator had to be remanufactured to give more output as it could not keep up with the draw of two fuel pumps, damn thing ended up costing a fortune. 

Grant you may well have the same issues with your MX-5 car if the ECU regulates the alternator the same way.
Hope this helps

Thanks Clive
I’ll look into it
Cheers


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[Mr Spiller]

Yes,  front diff flange (which is the normal way) or diff output flange, space is your enemy

Clive
A question for you , or any one else I guess regarding my track car .
Currently have japspeed ( crapspeed ) adjustable arms on the rear . One broke a while back so am tempted to go back to the standard ones with polybushes
Is the following good that it’s floating or bad because it moving ?
That’s just putting a spanner on the lower arm and moving gently back and forth when in the air

https://youtu.be/wHfdldd_Chw


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