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Fat Boy Dave
PostPosted: Tue Sep 22, 2009 2:26 pm 
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Anyone used one? I remember seeing somewhere where a guy had created a whole box for the carb on a blow through setup, but it might have been a Weber...

I know they used Dellortos on the turbo Lotus (I assume this was a blow through as well) and that they used a different type of float to cope with the pressure from the turbo.
Could you use a normal DHLA Dellorto and just fit a seal kit like this:
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http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=DHLAturbokit&CategoryID=1&PartsectionID=1

How would this type of carb work with a blow through supercharger setup (due to the higher pressure at idle and when the thrttle is closed)?
Done some searching on the web and most of the stuff that comes back is for Holly's and big blocks. :roll:

I know a few of you knowledgeable people on here are Dellorto fans, so I thought I'd pick your brains. :D

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
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drmini in aust
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PostPosted: Tue Sep 22, 2009 4:07 pm 
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A bloke named Jukka (in Finland?) did a blow-thru 45DHLA setup years ago, it went well after he sorted out a few teething problems.
He has a website somewhere...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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awdmoke
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PostPosted: Tue Sep 22, 2009 4:30 pm 
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Indeed he did : http://www.geocities.com/jharkola/1380turbo4.html

and there are others around: http://www.autosportlabs.org/viewtopic.php?t=1761

but
Quote:
Having said that (and done the Dellorto option), you will hardly gain anything by swapping the SU HIF to Weber or Dellorto, only extra cost and fabrication.
Jukka

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Fat Boy Dave
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PostPosted: Tue Sep 22, 2009 5:57 pm 
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That's the one I was thinking of, geocities sites seem to be blocked at work. :?

Does anyone know what all the different type of DHLA dellorto carbs are? Presumably the turbo ones and the pollution ones are different but how?

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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drmini in aust
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PostPosted: Tue Sep 22, 2009 6:55 pm 
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Not sure about the turbo ones..
Emission ones have the idle mixture screws in towers, also there are 4 (DHLA40C) or 6 (DHLA40E) big progression holes instead of 3 or 4 small ones. So progression from idle to main circuits is leaner. Not good for a competition motor. According to Des Hammill's Weber & Dellorto book.
However, I have used emission 40DHLA carbs on Minis with no problem.
One is on Spiro the Moke (owned by Mini Mad), with a tired 1152 motor last year? it still made 47HP ATW at the ausmini MRC dyno day.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Fat Boy Dave
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PostPosted: Tue Sep 22, 2009 8:26 pm 
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Do you know what "DHLA 'F' " would be?

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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drmini in aust
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PostPosted: Tue Sep 22, 2009 8:32 pm 
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Fat Boy Dave wrote:
Do you know what "DHLA 'F' " would be?

Quote from Hammill's book p40-
"C and E model Dellortos are universal performance non-emission models, while the F, G, H, L and N are emission carburettors".

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Fat Boy Dave
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PostPosted: Tue Sep 22, 2009 9:36 pm 
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Ahh Poo! :?

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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drmini in aust
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PostPosted: Tue Sep 22, 2009 9:46 pm 
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You can still make them work... :wink:

I'd buy Hammill's book- "How to build and power tune weber & dellorto carburettors".
Mine came from www.pitstop.net.au but search the web for cheaper.

I have other Weber & Dellorto books but find this one best.
http://www.pitstop.net.au/view/products ... plu/12993/

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Fat Boy Dave
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PostPosted: Wed Sep 23, 2009 9:43 pm 
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JUst to let people know, these kits to make Dellorto's into blow through carbs are no longer available from the link above. :cry:

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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sgc
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PostPosted: Wed Sep 23, 2009 9:53 pm 
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Dave, just go the HIF44 and save yourself the trouble :lol:

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Fat Boy Dave
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PostPosted: Wed Sep 23, 2009 9:54 pm 
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Pfft spoil sport, can't justify buying one of thse when I already have one. :D

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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drmini in aust
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PostPosted: Wed Sep 23, 2009 9:59 pm 
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sgc wrote:
Dave, just go the HIF44 and save yourself the trouble :lol:

When I dynoed my 1412 stroker at GR's, we tried both a single HS6 on RE7" manifold, and the 45 Dellorto with 38mm chokes (on a ported & gas flowed Redline 3005 manifold) off my 1360.
The SU made 113.6HP at 6000, the Dellorto made 114 at 6500. So, a whole 0.4HP gain at max revs.
But, all the way up to 5500, the SU killed the Dellorto for power and torque... :lol:
As sgc said, I'd use an SU and save yourself the grief, I doubt there is any worthwhile HP gain from using a Dellorto for forced induction. And I'm a Dellorto lover... 8)

<edit> I bet you could sell the Dellorto 45 for about what an HIF44 would cost you, or more.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


Last edited by drmini in aust on Wed Sep 23, 2009 10:28 pm, edited 1 time in total.

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Fat Boy Dave
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PostPosted: Wed Sep 23, 2009 10:04 pm 
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Pretty hard to argue with that.

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...
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jbeenz
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PostPosted: Mon Sep 28, 2009 4:52 pm 
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I beleive the early ERA turo cars - the ones they used to scare the living sushi out of Japanese dealers - used a blow through webber, but they reverted to the Mtro Turbo SU.

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