Going to dual dells - what else do I need to set them up properly? Options

[terrymason]

I'm gathering parts right now. I've already bought:

2 newly rebuilt and synced dellortos
intakes
two new (square) air filters.

I now need linkage, and am thinking about this:
http://cbperformance.com/catalog.asp?ProductID=536

and since I'd like square filters, I think I want this model:
3134 Porsche Style Linkage - fits DRLA & IDF Carbs on upright engines w/large air cleaners

Am I forgetting anything else I need to get these guys going? I currently have a single weber, so I'm hoping to reuse my fuel pump (with a T in it).

[Twystd1]

What kind of fuel pump do you have?

If ya don't know the name.... Do you have a pic of it?

AS far as linkages are concerned.

The best is probably a bell crank linkage as opposed to a CB style Hex bar linkage.

They are MUCH more expensive. And much more accurate. And they don't need much adjustment from wear.

If you buy the CB style Hex bar setup... Coat the inside of the hex bar joints with wheel bearing grease. This will keep the linkage from wearing so fast and help keep the carbs in sync.

I found a belll crank setup at Jake's site.
Bell Crank

Someone here also knows another place to buy a similar setup...

Thats my .0002 worth.

Regards,

C

[ahdoman]

Hey Terry - I run Dellortos and found out that the right fuel pump is really critical. If your running a "Facet" dump it quick and use either the Carter (my preference) or the CB Performance. You won't need a high PSI pump (3 to 4 lbs is fine) but what you want is a high volume pump (50 - 60 GPH). That is why I like the Carter. I don't need a pressure regulator and my carbs seem to never starve!

[904svo]

You will also need a Uni-Syn tool to set up the carb's for the correct air flow.
Your local parts store should be able to get you one, Edelbrock Corp. makes one
thats what I use.

[Twystd1]

The Sync of choice

Get em at Evilbay or at any ACVW parts store.

This is the only one I have used that is worth buying. The rest is junk. IMnonHO.

C

[terrymason]

OK, i've picked up the sync tool. Does anyone have a link to the pump that I should pickup?

[jr91472]

If you haven't already, get Bob Tomlinson's Dellorto Tech Book. CB has them.

Also, before you start make absolutely sure of the following:

-car is properly timed
-valves are properly set
-beware of exhaust and intake leaks (they will haunt you)

I went through this same process early last year. The biggest improvement in my carb tuning came from upgrading my ignition. I dump my 050 dizzy and went with a 009 stock dizzy and upgraded it with a Crane Cam Fireball system.

After installing the Dells, I had alot of off idle sluggishness. The stock 009 with the vac advance connected solved everything. As far as stock dizzies go, I was told by long time Porsche mechanic Wes Heldreth that the best stock dizzy for carbs was the one the came on the 74 1.8L L-jet car. Took awhile but I eventually found one. I am sure that it is not as good as the more modern Mallory's and such, but it was alot cheaper.

good luck.

JR

[Twystd1]

Here is one of the many that work well with Dells or webers

C

[Aaron Cox]

what they said (IMG:style_emoticons/default/agree.gif)

BTW - how are the carbs synced without being on a motor? (IMG:style_emoticons/default/chairfall.gif)

[Twystd1]

Yeah... I forgot to ask that....

They might be flow matched.... If Art Thraen did the work.

Yet I B doubting Art did these....

C

AA. Phone is on now...!!!!!! I B Charged up.

[Flycut]

I bought the cb performance Linkage and found that the arms that go from the hex bar linkage to thr carbs are to long and hit the top of the engine lid, The empi manifolds and linkage fit perfectly.

[Aaron Cox]

I bought the cb performance Linkage and found that the arms that go from the hex bar linkage to thr carbs are to long and hit the top of the engine lid, The empi manifolds and linkage fit perfectly.

(IMG:style_emoticons/default/wacko.gif)

no way - were the arms pointing toward the front of teh car????

and which pivot position were you using?

i find that way hard to believe, and am 99 percent sure you installed them wrong

[terrymason]

Bought my carbs from this guy:
http://stores.ebay.com/ALFA1750S-CARBURETORS-PARTS-STORE

He claimed that all four barrels were synced before shipping.

[Aaron Cox]

synced on HIS motor..... not yours....

you get to do it on your motor.... too (IMG:style_emoticons/default/smile.gif)

[ahdoman]

If you haven't already, get Bob Tomlinson's Dellorto Tech Book. CB has them.

Also, before you start make absolutely sure of the following:

-car is properly timed
-valves are properly set
-beware of exhaust and intake leaks (they will haunt you)

I went through this same process early last year. The biggest improvement in my carb tuning came from upgrading my ignition. I dump my 050 dizzy and went with a 009 stock dizzy and upgraded it with a Crane Cam Fireball system.

After installing the Dells, I had alot of off idle sluggishness. The stock 009 with the vac advance connected solved everything. As far as stock dizzies go, I was told by long time Porsche mechanic Wes Heldreth that the best stock dizzy for carbs was the one the came on the 74 1.8L L-jet car. Took awhile but I eventually found one. I am sure that it is not as good as the more modern Mallory's and such, but it was alot cheaper.

good luck.

JR

Hey JR,
What is the part number of the Fireball System that you used? There are several listed on their site.

[Aaron Cox]

for the price of an 009 or an 050 + a pertronix or a crane...

you could almost buy a MALLORY... which btw is the shizzle... and be MILES ahead...

[jr91472]

I got the XR3000-0226 ignition sytems and the 730-0091 coil.

If you haven't already, get Bob Tomlinson's Dellorto Tech Book. CB has them.

Also, before you start make absolutely sure of the following:

-car is properly timed
-valves are properly set
-beware of exhaust and intake leaks (they will haunt you)

I went through this same process early last year. The biggest improvement in my carb tuning came from upgrading my ignition. I dump my 050 dizzy and went with a 009 stock dizzy and upgraded it with a Crane Cam Fireball system.

After installing the Dells, I had alot of off idle sluggishness. The stock 009 with the vac advance connected solved everything. As far as stock dizzies go, I was told by long time Porsche mechanic Wes Heldreth that the best stock dizzy for carbs was the one the came on the 74 1.8L L-jet car. Took awhile but I eventually found one. I am sure that it is not as good as the more modern Mallory's and such, but it was alot cheaper.

good luck.

JR

Hey JR,
What is the part number of the Fireball System that you used? There are several listed on their site.

[Twystd1]

since you live by magic mountain......

you need some help?

C

[jr91472]

for the price of an 009 or an 050 + a pertronix or a crane...

you could almost buy a MALLORY... which btw is the shizzle...

I paid ~$170 for the Crane Cam stuff at Summit Racing. And Britt did made me deal for the 009.


But I hear the Mallory rocks.

[ahdoman]

since you live by magic mountain......

you need some help?

C

Thanks for the offer. My biggest battle right now is getting my hydraulic lifters dialed in (not my choice the PO installed, see my thread this PM). I've also heard a rumor that Joe Sharp may have another team NARP BBQ around the new year. If he does that I'm brining my teener and the tri-tip.