so the pod filter wont do much for me?
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so the pod filter wont do much for me?
It doesnt even do much for FI...Quote:
Originally Posted by michael_antoi
Will fuel consumption go up in normal driving? I'm guessing it would a little for regular driving and a lot for spirited driving, but I'd like a little confirmation...
Also, if you permanently open the second down draught barrel, wouldn't that chew more fuel too?
All youve done so far is add more air, not fuel... more fuel will be added when you rejet the carb... all these little free tricks makes revving and response better... with the stock setup, any car is actually starved a little for air, all youre doing is optimising it.... freeing it upQuote:
Originally Posted by StOo
Ahh, I see.Quote:
Originally Posted by DualCarb
I'm reading through that D-Series.org thread that was linked... and man am I out of my league :p Wouldn't mind getting better breathing mods for my car though... Maybe after I'm done with uni for this semester. I've got an exam tomorrow that I *should* be studying for...
Good luck for the exams... and that thread is very helpful, lots of useful info for carbd cars there...Quote:
Originally Posted by StOo
Cheers :)Quote:
Originally Posted by DualCarb
Yeah, I've been trying to talk my mate into upgrading his engine so I can have his dual carbed 1.5...
I was also looking at getting a weber for my Civic, but found it a bit difficult to source. My other friend has a 74 Civic with an 81 or something engine in it that is nice and quick. Suprises a lot of people for a 50 odd kW car :p I think he can pull mid 17's, which I know doesn't sound fast, but for what it is, it's quite suprising.
a weber....what's that?
i couldn't find much info on rejetting.....can anyone explain it to me?
Webers are performance carbs made by a company called... WEBER... there are others also, like Dellorto, Mikuni and Keihin... the stock carbs in our Honda's are Keihin carbs...
the fuel delivery to your engine is controlled by jets in the carb, which open and close according to how deeply you push your accelerator... the deeper you push, the more fuel the jets deliver... but stock jets are jetted for economy, and not necessarly performance. In Oz, like in South Africa, there MUST be shops around that know their way around carbs. They could help you to rejet, meaning putting in a bigger jet for more fuel delivery... some bike performance shops may also be able to help....
just remember, you CANNOT have high performance AND economy, even with FI thats not possible... performance means cramming more air and fuel into your engine's combustion chambers...
so how much performance increase would rejetting get me?
and say i do 500km to a full tank what percentage decrease would i get?
Well... If you had a hole in your bonnet to suck air into the carb, and huge mofo jets, you'd get some decent performance gains :p It all depends on what you want. You could pump heaps of air into the combustion chamber, but if you don't have enough fuel, you'll lean out and risk destroying your engine. On the other hand, you could pump too much fuel into your engine bay and have your car smelling like a rotary :p
You'll have to match both. If done properly, I reckon you could increase response by leaps and bounds, while increasing performance from anywhere between 5% and what... 50%?
Of course, fuel efficiency will also vary depending on what you do... I'm getting about 500km a tank too, but I used to get 600 - 650km. I was considering getting my carb looked at to try to fix the problem... but for the price, I could almost afford a weber and adaptor plate... Anyway, if you want to do what the guys on D-Series.org are doing, expect a drop to about 300km per tank.
Edit: I'm not all that technically minded when it comes to cars, so please take what I've said with a grain of salt. I could be right... I could be wrong. Best to ask someone who knows :p
it also depends on how you drive... taking it easy and driving like miss daisy, you wont notice a difference... but if you push her hard, you can witness the needle falling... but like I said, that's the problem with performance... you sacrifice economy.... the best bet is to get a happy medium with both, performance you are happy with, knowing that someone out there is faster than you, and consumption you and your wallet are comfortable with...