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 Post subject: Re: Our little cultus racer
PostPosted: Thu Jul 05, 2018 6:50 pm 
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Joined: Mon Dec 19, 2016 10:40 am
Posts: 654
Location: NZ
Tidied up the fuel pressure regulator lines....they were a mess....the tomei fpr cones with 8mm barbs but they need to be 6mm.

Fitted a wink rear vision....awesome field of view.

Fitted the inlet air tube and the iat sensor....the boss has an o ring to seal it. Just needs another small ring to hold it down. It's a Honda system....hard to get something the perfect shape....but at least it's clear of the pulley do easy to set the timing.


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 06, 2018 5:55 pm 
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Location: NZ
so i got most of the remote reservoir sorted today...I had to use some brass 1/8 BSP right angles...ugly...but functional...and adapt them into the master cylinder tube adapters I made....one came loose in the lathe....it lost the battle and ended up in the bin.... :twisted: had to make a new one...

I made a bracket for the air inlet system...also made a plate to hold the IAT boss down...so now thats complete.

Refitted the bonnet with new hinges which were rooted....made new bosses to take the slop out.

seems like I have gone two steps forward and one step backward in the last few days....

tomorrow I will start wiring....he hopes... 8-[


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 Post subject: Re: Our little cultus racer
PostPosted: Thu Jul 12, 2018 7:35 am 
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Joined: Mon Dec 19, 2016 10:40 am
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Location: NZ
New battery coming. I'm sick of trying to seal and unseal the battery box with the wet lead acid battery in it. Got a high cca AGM battery coming. Weighs 7kg. Will sit it just behind the passenger seat. Shorter cable runs. No issues with the box....that can go.

This weekend....when I'm home from Canada....wiring. All fabrication done. Just wiring now.
Then dyno. :lol:


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 Post subject: Re: Our little cultus racer
PostPosted: Thu Jul 12, 2018 11:07 am 
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Joined: Tue Feb 23, 2016 5:38 am
Posts: 351
Location: Amberley
Sounds like a nice light battery. From memory I think my Varley Redtop is more like 10kg.


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 Post subject: Re: Our little cultus racer
PostPosted: Thu Jul 12, 2018 7:06 pm 
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Joined: Mon Oct 12, 2015 11:30 am
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Location: Napier
Ever thought of using a Supercapacitor setup for starting the car? Would be super lightweight, 2kg at most?!

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 Post subject: Re: Our little cultus racer
PostPosted: Thu Jul 12, 2018 8:28 pm 
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Location: Bunya QLD 4055
This is what I use but in the 16 cell. https://www.ebay.com.au/itm/Ballistic-P ... SwWxNYon6B

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Why dont they just call it "Womenapause" instead.


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 4:08 am 
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Location: NZ
I bet that lithium battery has some serious cranking amps.

Nope don't even know what a capacitor starter is!

Yep the battery is lighter than what I have and can be installed on its side...
HC20 Drycell 12V CA680 5 seconds - 20AH @ C20
181mm x 76mmx 161mm. Now that's not cold cranking amps....I found that is about 310 cranking amps at 0degrees c and 230 at -18. Considering I'd likely be in a different country at -18 I'd have at least 310 cca or more....mostly racing at 6 or 7 degrees and above it should start the 1300 no worries. Obviously I'd like the beast to fire immediately or there may be some voltage drop. But I can mount it close to the firewall and have short cable runs. It starts now on 300 cca so I'm not worried. I do know the link ecu won't like less than 7 volts.

It gets charged by the alternator somewhat but I'll definately do an AGM maintainence charge between events.

Pick it up this morning so I'll pic it later.


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 7:37 am 
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Location: Portugal
Are you already using a gear reduction starter? It requires way less amps from your battery, its also lighter


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 3:25 pm 
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Joined: Tue Feb 23, 2016 5:38 am
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Location: Amberley
Yip, I installed a Baleno one and that made starting easier and was 1.4 kg lighter.


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 5:19 pm 
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Location: NZ
where can i get one guys!


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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 6:05 pm 
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Location: Canberra
Talk to Bewitched Gti about starter, he sourced one for me.

On the battery, search around for LiFePO4 chemistry batteries. There are a lot more options out there and while better versions have balance charging needs the fact that they run around 13.2V for right size this means charging off the alternator works well. They also have awesome shelf life. I have used one which is around 1kg and more that fine to start and run the car while drag racing. Something with a few more amp hours would be appropriate for a road going vehicle or higher draw needs. Even the smallest will easily crank a 4 cylinder engine. They will also turn over the engine under very cold conditions.

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 Post subject: Re: Our little cultus racer
PostPosted: Fri Jul 13, 2018 9:36 pm 
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Joined: Fri Oct 10, 2014 4:53 am
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Location: Portugal
1.3 1.6 1.8l balenos use these starters


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Jul 14, 2018 4:58 am 
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Location: NZ
https://www.trademe.co.nz/motors/car-pa ... 87b301a31a

Yes guys?

This is the part number on my one now...
31100-82011


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Jul 14, 2018 1:08 pm 
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Joined: Mon Oct 12, 2015 11:30 am
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Location: Napier
The supercapacitor takes the place of the battery, as they are energy storage devices. Apart from requiring a balancing circuit, they are lighter than a normal acid battery and start the car just as well. They power stored does not deplete like a regular battery either.

FYI - voltage drop usually is only a concern when running very long runs of wire, 20m+
An extra meter here or there will not cause enough of a voltage drop to impact any electrical circuits.
If the voltage drops below 7v, then something is really wrong. Most engines will not crank over past about 11v, so you will be safe.

If you are running an alternator, no need for charging between events. Just use the battery kill switch.

300CA is more than required for the little 1300.

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 Post subject: Re: Our little cultus racer
PostPosted: Sat Jul 14, 2018 5:38 pm 
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Location: NZ
thanks Michael.

Here are two other starters I have.

The one in the car is definitely a 31100-82011

Only two jobs today...slow as... 8-[

1. Fitted the clutch switch for the blipper...AC Delco item..had to make a new thread and its adjusted so only 8mm of clutch movement activates the switch.

2..tried to find a good place to fit the new battery...moved the passenger seat forward bt battery too tight to fit behind...thought about rear of the boot...but more cable needed....just behind the passenger seat on the farthest right hand side is best i think...shorest cable length while still moving any weight away from the drivers side...yes its only 7 kg...but if i put it on my fat arse side then its like a 14kg change....so i think 7kg on the far right is better in the long run.

Now just trying to make sure its mounted real secure...don't want that flying around the cabin. 8-[


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 Post subject: Re: Our little cultus racer
PostPosted: Sun Jul 15, 2018 8:57 pm 
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Location: NZ
The battery ended up here....easier...just use bigger cable. Nice to get to. Weight in the right place I guess.


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 Post subject: Re: Our little cultus racer
PostPosted: Tue Jul 17, 2018 5:56 pm 
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Location: Amberley
That starter part # isn't the GTi starter so it could be a reduction starter. The one I took out is 31100-82612 so that's the heavy one. Can't see the part # on my reduction drive starter without removing it but I'll record it next time I have it out.

I have my battery directly behind the navigators seat. It's quite a good spot as it's low and you can secure it to two panels. Check the rules because I think from memory your bracket must secure the battery on all planes and the + terminal needs to be insulated from the bracket. I guess your base kind of does that but might be better to have another strap. This is what mine looks like:
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 Post subject: Re: Our little cultus racer
PostPosted: Wed Jul 18, 2018 9:04 am 
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Joined: Mon Dec 19, 2016 10:40 am
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Location: NZ
Thanks Sam....it would be easy to throw another strap over the top. The strap I have is metal not Ali and it's 3mm. It would take a few tonnes to break loose...the weakest point would be the single 8mm high tensile bolt on the far side.

Where is the best place to get 16 gauge automotive wire in nz? The good stuff not super cheap or rip every poor c off. (Repco) like txl or gxl wire? I did not get wire for the runs from the ignition relay to the coils nor the power wires to the injectors. I was told to join the wires together using a parallel splice close to the source....much easier to problem solve if issues...makes sense. But requires each wire to be a metre or so long.

Question...due to deadtime and the injectors needing the same voltage I would need to ensure all wires are the exact same length? Yes? My injectors will run peak and hold...4 amps peak. I guess really 18 gauge would be more than enough. As far as the Toyota Yaris coil on plugs go I do not know the size needed for the power and earth. Searching has bought up very different results. The signal wire is small but does bugger all. I guess each coil might draw 7 amps max? 18 gauge is good for 7 amps so 16 would be more than enough.

It's a small amount of weight to ensure power delivery is not an issue. Whaddayah think?


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 Post subject: Re: Our little cultus racer
PostPosted: Wed Jul 18, 2018 5:06 pm 
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Joined: Mon Oct 12, 2015 11:30 am
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Location: Napier
Try these guys, website looks legit anyway although I have not dealt with them personally.
https://tycab.co.nz/automotive-cable/

Current draw on the wire to the coil is less than 10A, so 16 gauge would be fine.

Being pedantic: I would have all injector wires the same.
My gut says it would make no difference with an extra 10cm of wiring but I guess it adds up after the 4th injector. Probably only talking microseconds but hey, this is a precision machine of speed and aerodynamics we have here! Nothing but the best!

FYI - here is a link to the Supercapacitor setup I mentioned earlier. As my battery has just died, I might look into building one of these.
http://laserhacker.com/?p=98

I am quite interested in the starter motor info, would be great to fit a lighter, reduced gear/more powerful starter :D
The ones from the Baleno right?

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 Post subject: Re: Our little cultus racer
PostPosted: Wed Jul 18, 2018 7:26 pm 
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Joined: Tue Feb 23, 2016 5:38 am
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Location: Amberley
I don't think there's much danger of your battery bracket breaking. I'm really meaning to avoid the conversation with the scrutineer by meeting 5.5 3(b) rather than having to argue that your installation will withstand 25g.

Can you get electrical wire from work? Even if they can't sell you a few metres at staff rates I'm sure they could tell you where to buy aircraft quality. Failing that I guess talk to a local auto sparkie. If I was doing the same here I'd get what I needed from NZEFI.


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