jpindy3
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| posted on 22/4/09 at 07:38 PM |
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dellorto turbo carbs
with std dellortos can you convert them to turbo ones by fitting a turbo gasket kit??or are thay compleatly diffrent.thanks jamie
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prawnabie
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| posted on 22/4/09 at 09:46 PM |
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depends if you are using them before or after the turbo id guess
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britishtrident
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| posted on 23/4/09 at 08:15 AM |
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Megasquirt it.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Rob Allison
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| posted on 23/4/09 at 09:31 PM |
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Dellortos are the only carb that can be correctly fitted up to run pressurised.
You need a turbo kit for them. It basicly connects the fuel bowl to the boost sid of the manifold.
Webers can be altered to run on turbos but they will take more work.
Dellorto kit here http://www.dellorto.co.uk/merchandise/products.asp?CategoryID=1&PartsectionID=1
Always run blow through. The draw through way is one mis-fire away from an engine fire.
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ss1turbo
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| posted on 24/4/09 at 09:29 PM |
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I always get the Dellorto codes mixed up (DRHLA/DHLA)...but bought one of the downdraught ones to replace a modified 32DFT Weber. As has been said -
apart from a odd batch of dig DCOE's many years ago (and another downdraught fitted to an early Lancia Delta) the only ones you can find are
Dellortos. It does have subtle differences to the normal spindles (twin seals, balanced) as well as rubberised gaskets and an air bleed into the
float chamber.
Long live RWD...
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prawnabie
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| posted on 4/5/09 at 11:55 PM |
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quote:
Originally posted by Paul TigerB6
quote:
Originally posted by prawnabie
depends if you are using them before or after the turbo id guess
Huh??? I'm confused by the above!!
The difference will be in the ability of the carbs to take the positive pressure so seals and gaskets etc.
A quick search suggests not and you may be better looking at other options such as Webers DCOE's or bike carbs to do a turbo conversion. DHLAs
fetch good money so you could be in profit if selling them and buying a Boggs bike carb manifold + carbs. Also these are more compact so more room for
a plenum chamber.
linky to PH
How to pressurise bike carbs - menu option on the left takes you to it - best to right click and [This Frame],
[Open Frame in New Tab] to view the section
[Edited on 22/4/09 by Paul TigerB6]
Simple question lol, is he planning on using the carb(s) before or after the turbo! The carb(s) will need to be able to cope with the pressure if they
are fed by the turbo, or not if they are before the turbo.
Agreed that your engine, car and possibly 90% of your skin covering is in the balance when using draw though but ive seen it used for a while on a
couple of drag beetles by me without problems!
Shaun
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Volvorsport
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| posted on 5/5/09 at 01:07 PM |
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early rx7 turbos used a 2 inch SU suckthrough and made plenty of power .
depends if you want an intercooler ?
then youll be using blow through carbs .
you could rob some from a lotus esprit , but theyre not cheap really , apart from the noise i cant see why you would want to over a cheap mapped ecu ,
which will be far easier to drive/setup .
www.dbsmotorsport.co.uk
getting dirty under a bus
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ss1turbo
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| posted on 5/5/09 at 07:38 PM |
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"Draw-through" carbs do add a bit of complexity (aside from being unable to run an intercooler) - the turbo needs to be sealed against the
petrol/air mix specifically and that isn't cheap.
Not sure if it applies in all cases, but a lot of draw-through applications can report poor running off boost/idle if the inlet tract length is over
about 12-18" as the fuel falls out of suspension in the air.
Blow through carbs are more complex, but better for the job by far.
I have a fully rebuilt twin downdraught Dellorto (with correct seals etc) which might be for sale...
Long live RWD...
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jpindy3
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| posted on 6/5/09 at 07:40 PM |
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go on then how much???
make me happy!
jamie
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ss1turbo
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| posted on 6/5/09 at 08:33 PM |
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Last time I heard a price, it was £300 (new) - that was about 10 years ago. At that time they would only sell them in pairs (so £600, even if you
only wanted the one, as I did). Its a wide-spaced carb (originally meant for an Alfa flat-4, but apparently they like using then on turbo-d
VW's as well). Did some measurements and it should fit onto a stock weber manifold with an adaptor plate..
I didn't pay cash for this one - it was a "favour for a favour" deal - and i'm not sure who got the better deal...
Make me an offer...but it'll have to be into 3 figures..
[Edited on 6/5/09 by ss1turbo]
Long live RWD...
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