I know of a set of wide steelies for sale ,but you will end talking to yourself negotiating on price

WTB : golf, chin spoiler vic if anyone has one secondhand or new
cheers anthony

would be quite helpful to others considering you were making a choice between all 3 superchargers....what ever happened to that build D did you finish it ?

http://datsun1200.com/modules/newbb/v ... =ASC&type=&mode=0&start=0

Nick I have heard of the reputation that setup had :) which proves a well thought out kit will provide "great results"

Cheers

cool do we know what the engine spec may have been..?

Cheers mate that's it thankyou, I wondering what option other than twin su carbs were offered
Thanks again Anthony

I came across few pictures of a 120y sss does anyone know anymore of these little cars...?
All seem to have twin Su carbs but that all I can find about them.......

Cheers Anthony

Quote:
Yep, there are better options out there, absolutely, and there is no doubt this is not the ideal solution for all, however it is what it is and that suits me fine. I dont want big hp at big rpm.

I agree with you JD 100% you won't chase big Hp in part that was my point and if the consensus can see that good,increase in torque "yes" I know they will work to a point I had a Amr500 installed on A12 engine in my wifes car.

I have Always used CFM when calculating required flow of an engine for carbys as it's a multiple of capacity times RPM ,and when displacement is calculated for superchargers I change from CC's to cfm simple maths !




if the kit is capped at $300 Brilliant ! :)


If everyone that buy's the pulleys are aware that constantly pushing them past there design rpm will lead to failure of the coating and supercharger .."yes" do it......


enough said ;)

cheers Anthony

"Amr500 will give usable horsepower on a standard motor at a cheap price" ok

So will a j pipe turbo set up and probably for less than your kit which is $ ?

"Using larger blowers is fine for higher boost levels"

Boost is a measurement of restriction not the capacity of mechanical means producing it, small inlets ports, inlet valves can produce high boost I would expect this out of a std engine,does not mean fantastic Hp potential.

I would like you to educate prospective buyers, The "cheap kit" your flogging how much is the finished product for the diy to install ,and what are there Hp gains v $, I don't understand how someone can sell something that's in development stage that has proved nothing except a claim it's cheap !

personally I wouldn't bother purchasing a sc12 or 14 as Eaton and other positive screw superchargers can be had making far more Hp at any given boost / cfm level......but I do have one and a AMR500. I have never found anything to do with cars cheap and I'm struggling to have faith, when you surround every post with statements that are so vague with no commitment to fact or real life experience as such .....please prove me wrong with your own personal R&D and not Google Facts as to why the supercharger will give you 7psi and how you came to that figure.
I would love to see members getting what they want ,I encourage all to clarify and proven my statements wrong as I would like to see more blown A series cruise the street's and not blown motors from pulleys over speeding factory spec's amr500.

Nothing wrong with healthy discussion :)

Cheers

I have been away for a little while and just cam across this thread....

Have you honestly done the calculations on these superchargers .?

The displacement and inefficiency's of the Amr 500 work against it on the A12,they require over 3hp to drive at the 6000 rpm ,Have you considered those forces will be working on your shear pin and also the pitch of the thread ,one backfire will sort that out quick smart at least a serpentine belt will allow some slip

At a ratio of 2:1 the Amr is spinning at 12,000 rpm ,at that rpm depending on the fuel you use You are on the cuff of flow Vs heat....making them work harder will cause the coating to fail on the rotor's and spinning them hard will lead to them exploding past there designed max rpm.

Then consider this they are a positive displacement supercharger like Turbo's they can be pushed Harder ,but it doesn't mean the gains are there to be had as heat will force reduced timing to avoid detonation to the point were output is lower than using lower levels of boost, Amr500 will produce higher intake temps than a Turbo at the same given boost level that's why they have efficiency maps !



At a ratio of 2:1 the Amr 500 displaces 1 ltr which is .035 CFM , so at .035x6,000 rpm the charger displaces 210 Cfm at motors peak rpm range ,A12 requires 123 Cfm (max) at 6,000 rpm that's just 87 cfm @6000 rpm above whats needed Na, 14.5 Cfm per 1000 rpm that has the potential to add 21.75hp to the out put over stock, a more efficient head like h89 will drop that figure considerably meaning the real life gains will change as you reach peak port choke velocity and other mechanical losses of different heads and inlets.


Assuming 7psi is used on 9:0 .1 compression that will give a dynamic compression of 10.93:1 that's around 4% gain... 4% nearly 3hp (2.70) at 6,000 rpm would be drained by the hp to turn the amr at it's ratio.....

The A series motor will never be the restriction in these setups and will handle any boost these chargers can throw at them but not the superheated air associated with it or there small displacement

Same can be done with sc12 or sc14 on A12 where there displacement has a more positive effect to hp

Cheers Anthony

Hello Chaps , still doing bits and bobs from home quite busy of late,in the middle of machining hubs for larger s13/14 disc's , whilst everything is setup PM if you need any machined cheers Anthony

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