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ed	posted on 11th Jan 10 at 12:31
	Or you can have a draw through setup where the turbo is behind the carb. I've no idea why you'd do that though because the turbo will get fucked. We had to mount the throttle body in front of the turbo on one of our race cars to get through scrutineering, worst idea everrrrrr! [Edited on 11-01-2010 by ed]
ed	posted on 11th Jan 10 at 12:29
	quote: Originally posted by DaveyLC quote: Originally posted by ed I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work. The fuel pressure is easy to over come.. Just use a standard regulator the delivered pressure is relative to manifold pressure. You've got to pressurise the float chamber because you wont get a venturi effect if the pressure is lower in the float chamber than it is in the venturi. You also need to seal it all otherwise you'll get air leaks and fuel will piss out all over the place. Some carbs already have bearings and joints that are sealed well enough to be able to handle boost, Delortos being one.
ed	posted on 11th Jan 10 at 12:26
	quote: Originally posted by lostboy I've also heard alot of bad and good things about megasquirt, although I've seen more good than bad, but it is known as a cheap system, but tbh not everyone can afford the best, I've been looking around and a DTA S40 system starts at £545, Go-Tech wasn't much cheaper at around £400. I'd shop around but decent management isn't cheap. Megasquirt isn't really meant to just be a cheap system. An ECU is going to set you back $400 then you'll need all the bits like the loom and sensors. The point in it is you can get the software and set it up yourself, there is support available on the forums as well as maps to get you going. If you bought a GoTech, EFI Technologies, DTA e.t.c... and you wanted support the advice would be to go see someone. The choice is DIY or pay an engine builder to do it for you. In the world of hobbies I think it's much more fun to build the thing myself, where as other people might just be interested in driving the thing :)
DaveyLC	posted on 11th Jan 10 at 12:22
	quote: Originally posted by ed I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work. The fuel pressure is easy to over come.. Just use a standard regulator the delivered pressure is relative to manifold pressure.
ed	posted on 11th Jan 10 at 12:19
	quote: Originally posted by Nic Barnes quote: Originally posted by ed I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work. was it delorto or webber made turbo carbs? used on an old lotus engine? carb turbo. I think it was Delorto. I saw an Escort RST on carbs ages ago at Max Power live, think I've got a pic somewhere....
lostboy	posted on 11th Jan 10 at 00:17
	I've also heard alot of bad and good things about megasquirt, although I've seen more good than bad, but it is known as a cheap system, but tbh not everyone can afford the best, I've been looking around and a DTA S40 system starts at £545, Go-Tech wasn't much cheaper at around £400. I'd shop around but decent management isn't cheap.
metterz123	posted on 11th Jan 10 at 00:14
	i havent got management yet and i am after advice about it.i think i am goin the turbo route first as i have the turbo anyway and so i ordered the manifold. What happens if i put a 1.8e head on with the turbo?? with the inlet mani? jus wandering
Nic Barnes	posted on 9th Jan 10 at 21:37
	ps, seen as you have management, why are you not using bike throttle bodies? gsxr or something? seems daft to go with programmable ecu then carbs. far more benefits using tb's.
Nic Barnes	posted on 9th Jan 10 at 21:36
	quote: Originally posted by ed I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work. was it delorto or webber made turbo carbs? used on an old lotus engine? carb turbo.
scottyp1989	posted on 9th Jan 10 at 21:31
	quote: Originally posted by ed I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work. well then like i said you can do it but with work to trumpets ect, you said you cant do it
gazza808	posted on 9th Jan 10 at 18:47
	also get on www.vaux-extreme.com all about 8v turbo's and most running megasquirt.
gazza808	posted on 9th Jan 10 at 18:44
	quote: Originally posted by Linch quote: Originally posted by metterz123 after good advice on here (cheers ed) i am going the megasquirt route. I can Tell you now that's bad advice! No offence to ed, but there are much better After market management systems than that! Megasquirt is terrible! who says that?? probably some one trying to sell you an ecu? it actually has most options that most ecu's have and more than some main stream ones, there's alot of people using it no problems, also two people i know running a 8v turbo mk2 astra and tigra running 10's and low 11's so can't be bad aye ;) oh and i've also got megasquirt ecu :) [Edited on 09-01-2010 by gazza808]
ed	posted on 9th Jan 10 at 18:18
	You can, you can do whatever you want to them too. As it's an open source project there are loads of mods available for them so you can get a nicely suited setup: http://www.diyautotune.com/catalog/index.php
Sportycorsa86	posted on 9th Jan 10 at 18:16
	mega squirt is good if your on a budget! dont you get the option before you buy to build it yourself or buy on pre made ??
ed	posted on 9th Jan 10 at 18:16
	I never said it was impossible, he will have had to do extensive modification to the carbs to get it to work.
andyc1234	posted on 9th Jan 10 at 18:02
	quote: Originally posted by ed How does a carb suited for an n/a application work when the pressure in the venturi is higher than the pressure in the float chamber? my boss is using a carb fireblade lump with a turbo in a kit car so it does work
Olsrey	posted on 9th Jan 10 at 17:50
	quote: Originally posted by ed There are a lot of people who use it with great success who would disagree with you. [Edited on 09-01-2010 by ed] Agreed, djivesp over on MIG has a turbo 8v and he has success.
ed	posted on 9th Jan 10 at 17:44
	How does a carb suited for an n/a application work when the pressure in the venturi is higher than the pressure in the float chamber?
scottyp1989	posted on 9th Jan 10 at 17:21
	you can use carbs with turbo but cant use the standard trumpets. and there is a lot of aftermarket management out there, if i was you i would read up on all of them and see wich one suits you best
ed	posted on 9th Jan 10 at 17:00
	Also, as I said in your other post. You won't get bike carbs to work with a turbo because normally carbs will only work on n/a applications. You also don't need management with carbs, you just need something to control the ignition.
ed	posted on 9th Jan 10 at 16:58
	There are a lot of people who use it with great success who would disagree with you. [Edited on 09-01-2010 by ed]
Linch	posted on 9th Jan 10 at 16:43
	quote: Originally posted by metterz123 after good advice on here (cheers ed) i am going the megasquirt route. I can Tell you now that's bad advice! No offence to ed, but there are much better After market management systems than that! Megasquirt is terrible!
metterz123	posted on 9th Jan 10 at 16:30
	Let me lay down the plans.... I have a corsa with a c20ne engine from a calibra, as of yet i have had it chipped, kent cam, lightened and balanced flywheel, induction kit, 4-2-1 manifold bla bla bla. I am looking for xe plusplusplus power so i decided to go bike carbs, since that decision i have now aquired a garrett turbo and ordered a t25 manifold, after good advice on here (cheers ed) i am going the megasquirt route. I am 1st of all in need of advice regarding going the yamaha r1 bike carb set up, i.e is this possible? is it a mission? has it been done? Secondly is there anywhere i can go to have the management set up regarding the carb and turbo together. Does this seem a good idea to do, any ideas regarding the set up? Thanks guys.