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   All Posts (coxsteve)


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Re: Substitute for CA18 engine mounts
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For anyone needing Engine mounts look up Mackay Rubber products an Australian company who make mounts and hoses for almost anything.
For competition use look at doing what Ford used on the RS1800 rally cars,they made a mount with a tubular section to which they fitted Ford transit leaf spring front Rubbers this gives you the absorbtion of rubber but being fully enclosed the rubber will never tear as can happen with traditional mounts especially when Rallying,the mechanics of design will vary with the application but can be adapted to most engine requirements for a pretty much trouble free setup as long as your welding skills are up to scratch.

Posted on: 2010/5/1 1:28
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Re: should i go mild cam or stock cam on a14 with twin hitachi's?
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Regarding Cam grinds for any Engine that uses a vacuum dependant Carburetor you need to maintain good Vacuum or these will respond poorly to throttle input.
By all means go to a different Cam for improved performance what style you will need is a short duration big lift type cam,a good example of these is what Brock used on the group 3 Commodore.
The reason why is a longer duration cam extends the inlet valve closing point,this means the piston is further up the bore when the valve shuts resulting in less effective compression,less vacuum draw on the carburetor Piston and poor response.
This is the reason why when going to a longer duration cam you also need to increase compression to maintain some low end torque and good engine response
In Australia you could talk to CamTech in Sydney, Waggot Cams in Alstoneville north of Newcastle,Ivan Tighe Cams in Brisbane or Wade cams in Melbourne.
Wade actually were the suppliers for Nissan sport Australia when running the Bluebird turbo's at Bathurst,I have used Waggot cams with good results and Camttech in Sydney is quite happy to look at doing oddball configurations as well.

Posted on: 2010/5/1 1:19
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Re: Topgear LSD's- H145, H165, H190, R180, R200... who's interested?
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Thought this Topic needs a bump,but rather than just do that I could offer some advice for people building or having a Differential center built,many years of building these for both circuit and rally use gives me some experience here,most mechanics do not build Differential Centres generally only specialists.
1:Generally use factory settings for setting up your crown wheel and pinion for road use .
2:If the crown wheel and Pinion are somewhat old have them inspected for wear on the hardening,if not too severe they may be lapped for a noise free road diff.
3: I do not recommend lapping for competition use,better to use new Gearsets.
4:When building a centre for a high horsepower use it may pay to set the Differential Pinion a little deeper into mesh with the Crown wheel this then results in the Gearset being in optimum mesh under maximum power such as in Drag Racing as when under power the Pinion tends to be driven out of mesh.Logic will tell you that you want optimum Gearset mesh under maximum power for best results regarding power loss and Crownwheel and pinion life.
Being a geared Torsion style LSD Centre these are the most maintenance free units you can have,there is no need to play with Ramp angles or Plate preload to adjust the LSD for optimum handling,the ramp angles are what the Japanese aftermarket suppliers refer to when they talk about 2 way 1 way and 1.5 way LSD centers.
* 2 way has ramps that will lock the LSD under both Acceleration and Decelleration.
* 1.5 will lock better under Acceleration but not as well under Decelleration.
* 1 way locks only under Acceleration
The reason for this is that if an LSD is set very tight on plate preload they will induce understeer going into corners hence why the various options are made,the Torsen style is rather unique in how they work and is Ideal for front wheel drive and very driveable in rear wheel drive cars in varying conditions.
Viscous type LSD units are very much influenced by temperature and can be quite erratic and are best limited to moderate road use only for those who may have considered one of the Subaru types for an IRS Datsun.

Oils are important when I was rallying a Stanza most people were replacing the crown wheel and Pinion due to the pinion turning blue with heat about 2 to 3 times a season,I was using a special Castrol oil known at the time as AH3976 thanks to a sponsership deal,this is now actually sold as Castrol Differential oil Number 1 and contains a lot of Moly and other specialised additives this oil rsulted in no wear on the gearset and a loss of only 2 pounds of LSD plate preload over a full season,others such as Redline also do good products do not cut corners here.
Hopefully this will enlighten some of you on why you would like an LSD,what it will do for you and how to specify or set it up for your application. Cheers coxy
Just had a look at the Tech Wikki maybe this could be added there as it is relevant in that area of the site

Posted on: 2010/5/1 0:52
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Re: question about tranmission tunnel
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You can use almost any tunnel if your fabrication skills are good enough ,the last one I did was a Z18 turbo using a Bluebird Tunnel (Jap import front cut used the tunnel as well as the firewall section)also used a Girling remote master cylinder setup as used on formula Fords etc,master cylinder was mounted on top of the steering column mounting section and the original 1200 clutch pedal cable hookup lines up perfectly to actuate a master cylinder mounted in reverse position,This particular Ute was a Burgundy colored one featured in Fast Fours and rotaries that I built with the Owner a mate of mine and when it was sold the new owner put it in the Mag and claimed he and his mates built it.Magazine ran a retraction apology about the article 2 months later small print on like page 67 if anyone remembers that particular car,also done CA 18 turbo and 4AGE conversions in 1200's back in the early 90's,as well as preparing a number of competition 1200's over the years

Posted on: 2010/4/30 23:36
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Re: Anyone know these flares?
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Having owned a genuine TE27 that is what they are for sure,the last people i knew that made them was a mob called GS motor bodies at carlton in Sydney not sure if they are still around or trading under another name though.

Posted on: 2010/4/30 23:18
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