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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 16, 2019 7:10 pm 
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Joined: Mon Oct 12, 2015 11:30 am
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Location: Napier
Rear header mount I suspect should be rubber. If it was solid, you would be putting a strain on the headers with the engine moving and the headers secured to the body.

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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 16, 2019 7:32 pm 
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Location: NZ
the headers will not be secured to the body....the headers are connected to the head and just behind the merge collector up to the rear engine mount so the headers move only with the engine...the flexible coupling in the exhaust provides the necessary movement for the rest of the system as does the resonator rubber mounts. The engine does not really move with the urethane mounts...however it does a bit....it vibrates somewhat because of the hard mounting....what I am really considering is the headers expanding and contacting its heat and if they are solid mounted at both ends I could cause them to be stressed causing cracking.....I guess maybe the rear header mount should have a little give in it.... 8-[


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 Post subject: Re: Our little cultus racer
PostPosted: Sun Feb 17, 2019 8:24 am 
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Location: NZ
So im onto various things today....LOT of sanding to do on the splitter you can see in the background....too much epoxy and the plastic was not the right stuff and caused more wrinkles than it helped with....ill do better on the top.

This is my new Xcel Arc helmet. it has a respirator....I am always holding my breath or trying to wear a mask with carbon pod in it to prevent the nasty fumes that come off while welding...also my speedglas is older tech and only has two light sensors...so this was the cheapest I could find but i have a mate that uses one in an engineering facility and he says apart from the cover being a bit weak....(holding the filters in) it works great. the helmet has 4 sensors and lots of controls...unlike the speedglas you dont have to turn it on.....I have been flashed a few times by the speedglas as it turns itself off after a bit of inactivity.

I put the helmet on and immediately the lens I put in fogged up....turned on the respirator and a nice waft of cool air entered the helmet and within seconds I had crystal clear views.

now when Tigging instead of reeling back from the fumes and having one sensor disappear behind my hand Ill be able to get in nice and close and see what the hell I am doing. next step is replacing the mig welder. Im making a new trailer soon....then ill have Xcel Arc tig, mig and helmet....yes its all chinese made stuff but all but ferronius is....yes even your precious lincoln! All mig and tig parts made in one of three factories in china....it comes down to it not being chinese but quality control...these are made for a local supplier who designed the machines and went to china...selected the components and oversaw the production. Xcel Arc has been around a while now and is good gear. it appears its so good you can levitate on your side .... 8-[


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 Post subject: Re: Our little cultus racer
PostPosted: Sun Feb 17, 2019 1:47 pm 
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Joined: Fri Sep 03, 2010 10:41 am
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Location: Bunya QLD 4055
I get a lot of vibrational sound through the video feed so I would go soft on mount, so rubber.

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If "X" is an Unknown quantity, and a Spurt is a drip under pressure, then an "EXPERT" is an "Unknown Drip Under Pressure".
Why dont they just call it "Womenapause" instead.


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 Post subject: Re: Our little cultus racer
PostPosted: Sun Feb 17, 2019 7:22 pm 
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Posts: 780
Location: NZ
Thanks for that....Ill post pics tomorrow of the solution if I get it done....


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 Post subject: Re: Our little cultus racer
PostPosted: Mon Feb 18, 2019 6:41 pm 
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Location: NZ
i got most of the rubber mount done but no pics.

just some pics of the splitter....lets seee what we have here???....lots and lots of sanding...thats what we have.... 8-[

will get into the moon suit tomorrow outside and get to it with the 80 grit orbital... :?


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 Post subject: Re: Our little cultus racer
PostPosted: Tue Feb 19, 2019 8:17 pm 
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Location: NZ
Getting closer...


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 Post subject: Re: Our little cultus racer
PostPosted: Wed Feb 20, 2019 3:30 pm 
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Joined: Mon Oct 12, 2015 11:30 am
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Location: Napier
Looks GOOOD!

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 Post subject: Re: Our little cultus racer
PostPosted: Wed Feb 20, 2019 5:25 pm 
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Location: Londoninium
Excellent work. Your get to and give it ago attitude is great.
What part number ARP head studs you using?
GTP


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 Post subject: Re: Our little cultus racer
PostPosted: Wed Feb 20, 2019 8:00 pm 
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Joined: Mon Dec 19, 2016 10:40 am
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Location: NZ
thanks guys...never got to sanding the splitter yet...
have a few other things on the go.

hey the studs Im using are Datsun 1200 ones and there is one "wasted" bolt for the oil feed on a Datsun 1200.... I have a mate with a set so I bought a standard stud off him so i dont need to use the wasted one...I bought the studs because they are cheaper than the bmw offering. the BMW has more studs in it. bmw kit...ARP 2014302 12-Point Head Stud Kit for BMW M50.
the datsun 1200 ones...ARP Pro Series Cylinder Head Stud Kits 202-4202....but you have to deal with the one stud being smaller in the middle....


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 Post subject: Re: Our little cultus racer
PostPosted: Wed Feb 20, 2019 8:16 pm 
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Joined: Mon Aug 25, 2003 12:00 am
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Location: Londoninium
Thanks man!
GTP


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 Post subject: Re: Our little cultus racer
PostPosted: Wed Feb 20, 2019 8:28 pm 
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Posts: 780
Location: NZ
Also im assured by my mate that the datsun 1200 studs are the same as the bmw ones and work perfectly...still have to bring down the washers though...just like the BMW kit


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 Post subject: Re: Our little cultus racer
PostPosted: Thu Feb 21, 2019 6:22 pm 
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Joined: Mon Dec 19, 2016 10:40 am
Posts: 780
Location: NZ
my new Mig Tig Rig is all set to go.

here is the new fuel rail Lachie and I made up.


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 23, 2019 6:16 am 
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Joined: Tue Feb 23, 2016 5:38 am
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Location: Cust
The fuel rail looks good. How's the engine progressing?


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 23, 2019 8:36 am 
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Location: NZ
No idea Sam. I guess I’ll hear when I’m away in London next week. Work is stupidly busy so I’m not getting enough down time to get everything sorted. Won’t take long when I get it back ho e to be able to take it down for the retune. Then run it on the 5th April at Manfield.


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 23, 2019 9:40 am 
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Joined: Fri Sep 03, 2010 10:41 am
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Location: Bunya QLD 4055
Better not let the handbrake see you calling her a ho e.

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If "X" is an Unknown quantity, and a Spurt is a drip under pressure, then an "EXPERT" is an "Unknown Drip Under Pressure".
Why dont they just call it "Womenapause" instead.


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 Post subject: Re: Our little cultus racer
PostPosted: Sat Feb 23, 2019 10:23 am 
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Location: NZ
Haha....I wouldn’t dare....my super being cut in half would prevent it...lol 8-[


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 Post subject: Re: Our little cultus racer
PostPosted: Sun Feb 24, 2019 5:15 pm 
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friggin sims cancelled....rrrrgh....now all that $hit i studied ill have to do again in a month.

so I came home and got the FPR mounted with the fuel rail. here is the pics.


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 Post subject: Re: Our little cultus racer
PostPosted: Thu Feb 28, 2019 3:51 am 
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Joined: Mon Dec 19, 2016 10:40 am
Posts: 780
Location: NZ
So the race engine builder used a torque plate to hone the cylinders to the new forged pistons.
He didn’t think it would make any difference because of the floating type cylinders. But the bores went up to 3 thou out when torqued down. Interesting....

The king racing bearings supplied were at 3.5 thou.....rrrrgh.....too much. New tighter bearings being ordered.
Genuine Japanese graded bearings have NDC markings on them! Wtf? So did the previous builder ignore my bearings and fit ndc ones? Anyway....he doesn’t like them....he has shaved the caps and is going to line hone the caps for race bearings at 1.5thou. One main had been attacked with a scraper....maybe had a tight spot....he said it has to be perfect before it leaves as he provides a guarantee....so I hope I’m not going to lose my shirt over this engine.

Says the valve grind has really fat seat lines so is going to give them a “lick”

Meantime, I have fitted my “dumbing down” switch. Now we only have 1:25 A’s a goal. Lucky we have a link extreme with an electronic throttle. The lesser power and lower rev limit will serve to massively increase longitivity. Apparently we can also have a “push to pass” switch on the steering wheel....turns off the analogue input so we get 100% power while switch pushed.
Seems like cheating to me....but we spent all this coin to do 1:23 and the bloody goal posts have moved.

I figure if we can dial the power to a 1:25.5 that should be enough without any “cheats”. One guy I know for sure turns his boost up and down depending on traffic. I’m just against all that crap. No satisfaction....check book racers. I figure it’s best to just push them really hard so they have to go fast and can’t “drive down” to the lap time and cause them to blow out with a ten second penalty per lap they blow out.

Yet if we decide to see what the car can do on a simple car club day we can turn it up to max and have a good fang.


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 Post subject: Re: Our little cultus racer
PostPosted: Mon Mar 04, 2019 6:28 pm 
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Joined: Mon Dec 19, 2016 10:40 am
Posts: 780
Location: NZ
Pretty quiet round here on redline


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