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Old 26th December 2005, 21:20   #1
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Smile Rubber and alcohol

hello dudes,
i was planning to use ethyl alcohol with petrol in my maruti...
i have read it in some articles that ethyl alcohol may affect rubber....
so please tell me which all parts in the fuel line of a maruti 800 are made of rubber...
i think the float in the carburettor is made of rubber or rubber like material...
please specify some solutions...

please comment on my post and answer my queries...

thanks in advance,


pratheesh prakash
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Old 26th December 2005, 21:26   #2
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Float is made out of special plastic. This don't get affected by petrol.

Why do need to add ethyl alcohol with petrol?

As a whisky lover I don't like the idea at all.
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Old 26th December 2005, 21:28   #3
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Hey Pratheesh

If you mix only 5% of ethanol with petrol you wont face any problem for sure...
Anything above that can cause problems with elastomers (rubber) parts...which varies from vehicle to vehicle....

KP
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Old 26th December 2005, 21:38   #4
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Quote:
Originally Posted by Rudra Sen

Why do need to add ethyl alcohol with petrol?

As a whisky lover I don't like the idea at all.
ha ha ha!!! but i heard that ethyl alcohol ll help you to improve the octane number...... need to try it on my FERRARI(cough...cough..maruti)...

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Old 26th December 2005, 22:13   #5
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Quote:
Originally Posted by pratheesh
ha ha ha!!! but i heard that ethyl alcohol ll help you to improve the octane number...... need to try it on my FERRARI(cough...cough..maruti)...

Pratheesh Prakash
Hey...!

It wont increase your octane number by much.....

KP
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Old 26th December 2005, 23:22   #6
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float pin.. does it have rubber.. careful then?? dont recollect..

but still better idea is maybe get some octane booster and very honestly for a maruti assuming in stock compression as in heads, use IOC premium.. as good as it gets
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Old 26th December 2005, 23:25   #7
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if the mixing ratio goes wrong the mixture might damage the valves in your engine.
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Old 27th December 2005, 00:09   #8
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Why would you want to use any thing else other than petrol??? And if you want increased octane rating just get a higher octane fuel...

The 800's are set up to run with 87 octane, you can use 91 instead...

Last edited by Psycho : 27th December 2005 at 00:13.
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Old 27th December 2005, 07:58   #9
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Quote:
Originally Posted by Psycho
Why would you want to use any thing else other than petrol??? And if you want increased octane rating just get a higher octane fuel...

The 800's are set up to run with 87 octane, you can use 91 instead...
but its thrilling to use our own mixes...i read somewhere that ethanol has an octane rating of 127 (greater than toluene with 120) and also it will help in reducing HC and CO emissions because of extra oxygen content in it.

And of course, ethanol is a better fuel than any quality petrol


Pratheesh Prakash
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Old 27th December 2005, 09:43   #10
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So your whole point of adding alcohol is to improve octane number?
As Psycho said you can go for 91 octane or even 93 octane
M800 was designed to run on 87 octane after lets say 93 (though honestly I would say 87) octane number just becomes "number"
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Old 27th December 2005, 10:52   #11
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Along with this, try advancing the timing in your distributor and check if it gives you more pickup.
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Old 27th December 2005, 13:01   #12
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Quote:
Originally Posted by pratheesh
but its thrilling to use our own mixes...i read somewhere that ethanol has an octane rating of 127 (greater than toluene with 120) and also it will help in reducing HC and CO emissions because of extra oxygen content in it.

And of course, ethanol is a better fuel than any quality petrol


Pratheesh Prakash
OH yeah??
I've already experimented with this stuff and blew two japanese engines. U wanna risk it?? Pls show mercy on ur 800..
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Old 27th December 2005, 13:24   #13
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Quote:
Originally Posted by nitrous
OH yeah??
I've already experimented with this stuff and blew two japanese engines. U wanna risk it?? Pls show mercy on ur 800..
No offence, and I mean this in the nicest way possible, but if you blew engines then you don't know what you're doing.

Pratheesh, mixing your own fuel is ok but take note of the fact that on a stock 800 engine it won't give you any gains. If you use high quantities (>20%) you have to richen up the mixture therefore offsetting any cost gain you may have by using ethanol. Octane number will increase but it wont be of any use unless you modify the engine so that it needs the higher octane.

While mixing take note of the fact that ethanol is hygroscopic and will pull moisture right out of the air like crazy. You may already know the consequences of water getting into your fuel system. Also over 35% ethanol you will have problems with the fuels mixing together. You will see the fuel turn cloudy and even separate after a while.

I say use a good ready mix fuel like XTra Premium or Speed. 91 should be ok. Any higher and the extra octane is burning a bigger hole in your pocket.

My $0.2. If anyone has any petty issues with what I said hold your horses. I'm open to technical discussion only on this topic. Nothing else.
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Old 27th December 2005, 14:17   #14
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Sounds a bit pointless when you can buy 91/93 octane fuel at the pumps.
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Old 27th December 2005, 16:06   #15
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thanks ananthkamath, well i heard that anhydrous alcohol (200 proof) is completely miscible with petrol, but the presence of a small amount of moisture can cause the two liquids to separate.
Also, i ve heard that the amount of ethyl alcohol should not be greater than 20% of the total volume.

And nitrous, please tell me something more, what was the proportion you tried....
and, you did any modifications???

thanks everybody,

pratheesh prakash
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