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My Ride; what I have been up to
Topic Started: Aug 21 2008, 11:55 AM (1,241 Views)
Kodiak_gbl
Slow Driver
fendy_kjg
Aug 26 2008, 09:50 AM
thats one just superimpose la ( photoshop ) but if u wan i got place where can make it use metal plate around 200-250 mar 4 all 4 pieces...

hmmm igot the supercharged from march my fren so i decided to try it ...
cause im using a15..how about the boost ?? 0.3-0.5?? iz it reliable
cause the internal of a15 is quite nipis..

for smaller pulley u can try kancil one... :P

Not bad your photochop works. hhahah.

Nissam March supercharger. What type is it? 0.3 to 0.5 ( im assuming is bar) should be good for the stock engine. Anything more and you might have to start looking into water injection and timing adjustment.

The problem with the kancil one is the houseing is too small to house the coil behind the pulley. I might need to have one machined up for use. Still looking around 1st :)


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fendy_kjg
Super Driver
ekeke thanks...

hmm i just afraid one thing only the engione blow but i plan either to use 0.3-05 boost je not more than that cause all internal stock la...
:unsure:
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ocphangaz
Member Avatar
Datsun Taikor
fendy_kjg
Aug 26 2008, 03:11 PM
ekeke thanks...

hmm i just afraid one thing only the engione blow but i plan either to use 0.3-05 boost je not more than that cause all internal stock la...
:unsure:

wah fendy you very very ambitious lar...

3 psi is only 0.2bar.. you wanna go for 0.5 bar with stock internals? even my RB running with 0.5 bar..

you'll need to reduce your engine's compression to 8.0:1 for 0.5 bar (7.25psi).
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SaMMie_gal_B310

Sorry, but may i know what's the compression ratio of the stock 120Y engine ( A12 )?

I have no experience using these engines before :(

Thank you
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fendy_kjg
Super Driver
ocphangaz
Aug 26 2008, 03:30 PM
fendy_kjg
Aug 26 2008, 03:11 PM
ekeke thanks...

hmm i just afraid one thing only the engione blow but i plan either to use 0.3-05 boost je not more than that cause all internal stock la...
:unsure:

wah fendy you very very ambitious lar...

3 psi is only 0.2bar.. you wanna go for 0.5 bar with stock internals? even my RB running with 0.5 bar..

you'll need to reduce your engine's compression to 8.0:1 for 0.5 bar (7.25psi).

thats y i ask before i fix.. la .. i know the boost not so big later njin blow la... or 0.3 je ... thast will be enough i think.. :unsure:
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terrorist
Member Avatar
P Driver
mmm very confius la, ur intallation supercharge look like after carb, which 1 better before or after carb? :wacko:
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ocphangaz
Member Avatar
Datsun Taikor
terrorist
Aug 26 2008, 11:48 PM
mmm very confius la, ur intallation supercharge look like after carb, which 1 better before or after carb? :wacko:

unlike turbo, supercharger is relying on the crank pulley to generate pressure. so location of supercharger mounting is limited... turbo you can easily route the pipings to suit your setup... so putting carb after SC will be harder. even now kodiak need to use 3 bracket to extend it's reach. this setup is already at a mechanical engineering limit.


for pros and cons; i've listed it before for drawthrough or blowthrough setup.
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ocphangaz
Member Avatar
Datsun Taikor
SaMMie_gal_B310
Aug 26 2008, 03:39 PM
Sorry, but may i know what's the compression ratio of the stock 120Y engine ( A12 )?

I have no experience using these engines before :(

Thank you

Standard A12 Engine:
Type: 4 cylinder in-line OHV
Bore: 73 mm (2.874 in)
Stroke: 70 mm (2.756 in)
Capacity: 1171 cm^3 (71.5 in^3)
Compression ratio: 9.0:1
Maximum hp: 68hp SAE @ 6000 rpm
Maximum torque: 9.70 kg/m @ 3600 rpm
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Kodiak_gbl
Slow Driver
fendy_kjg
Aug 26 2008, 03:11 PM
ekeke thanks...

hmm i just afraid one thing only the engione blow but i plan either to use 0.3-05 boost je not more than that cause all internal stock la...
:unsure:

Hi Fendy. Try going for 0.3bar 1st. Get the setup to run first to confirm everything is working well. Theres always other supporting things to settle when you do a mod like this. Then when its stable bump the boost up. I think its safe till 0.4 bar. Mine at 0.2 bar already got knocking sometimes, so tuning still needs to be done.

Too high boost too early + bad set up = fireworks.

So start small 1st. You can always change the pulley dimensions later to bump up or down the boost.

I think anything from 0.4 to 0.5 may require retarding timing, and a diff carb and also water injection to be safe.

Just do it my friend. Never know till u try.

:D
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Kodiak_gbl
Slow Driver
terrorist
Aug 26 2008, 11:48 PM
mmm very confius la, ur intallation supercharge look like after carb, which 1 better before or after carb? :wacko:

Yea its after the carb. Its a drawthrough set up. Its possible to set it up as blow through also. But you either have to box up the carb or get one uitable for boost. and you have to upgrade your fuel pump. I dont think either one of the set ups are better then the other. Just up to you and the resources available.
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washabushi
Member Avatar
Datsun Taikor
i tot our carb cant be used as blowthrough setup?
coz the jetting dont know wat edi...
cannot float then no minyak?
correct me
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fendy_kjg
Super Driver
Kodiak_gbl
Aug 27 2008, 09:37 AM
fendy_kjg
Aug 26 2008, 03:11 PM
ekeke thanks...

hmm i just afraid one thing only the engione blow but i plan either to use 0.3-05 boost je not more than that cause all internal stock la...
:unsure:

Hi Fendy. Try going for 0.3bar 1st. Get the setup to run first to confirm everything is working well. Theres always other supporting things to settle when you do a mod like this. Then when its stable bump the boost up. I think its safe till 0.4 bar. Mine at 0.2 bar already got knocking sometimes, so tuning still needs to be done.

Too high boost too early + bad set up = fireworks.

So start small 1st. You can always change the pulley dimensions later to bump up or down the boost.

I think anything from 0.4 to 0.5 may require retarding timing, and a diff carb and also water injection to be safe.

Just do it my friend. Never know till u try.

:D

interesting but i plan just to bot on nothing to be done like lubang minyak or whats so ever in other word everything stock ??

can or not about the boost mayb kecik la 0.2-0.3 je... iz it reliable ?? :unsure:
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Kodiak_gbl
Slow Driver
fendy_kjg
Aug 28 2008, 10:17 AM

interesting but i plan just to bot on nothing to be done like lubang minyak or whats so ever in other word everything stock ??

can or not about the boost mayb kecik la 0.2-0.3 je... iz it reliable ?? :unsure:

Well, you can. I didnt open up the engine or do any mods to the engine at all. I did change my exhaust, but that was leaking. When running like 2 to 3 psi, everything can be left as stock, whats important is the fueling. So far I havent had any breakdowns or failures yet, and its 2 months into the build. There will be other things to mod like your throttle cable and PCV hose and small items like that. Engine wise, all stock, no problem. Yours A15 right. The A15 has like 8.9 compression ratio compared to 9.0 for the A12.
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fendy_kjg
Super Driver
so any news ?? u wanna sale yor car why ??? that sc jual o me la ekekek
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washabushi
Member Avatar
Datsun Taikor
hmmm...yeah...y no update lately?
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