Duraspark 2 mpg tip

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Aug 10, 2011 | 09:08 PM

#16

Vanaroo

Junior User

Joined: Aug 2011

Posts: 65

Likes: 1

From: Mount Juliet, TN

Will the recurve job do anything for a stock engine or this more for modded engine?

Aug 16, 2011 | 12:07 AM

#17

seattle smitty

Senior User

Joined: Nov 2010

Posts: 458

Likes: 1

"Your results may vary". Recurving is even more important in modified engines, but I'd guess this is for a stocker. Nearly any smog motor of the '70s and '80s will see performance benefits from a similar proceedure.

Aug 20, 2011 | 04:38 PM

#18

Vanaroo

Junior User

Joined: Aug 2011

Posts: 65

Likes: 1

From: Mount Juliet, TN

Thanks SS! Hey, I don't mean to hi-jack this thread but I've got a duraspark question I'm hoping someone can answer.

I installed a duraspark 2 but I kept my tfi coil. Its been running great. Then I checked out the gofastforless.com site and he says the tfi coil won't work with the duraspark 2. Am I running the risk of burning up the module or?

Aug 20, 2011 | 09:28 PM

#19

Sw1tchfoot

Posting Guru

Joined: Oct 2010

Posts: 1,199

Likes: 1

From: Missouri

I believe the problem is that the timing is computer controlled on a TFI dizzy.

Aug 21, 2011 | 10:22 AM

#20

AbandonedBronco

Moderator

Joined: Dec 2007

Posts: 7,987

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From: Boise, Idaho

As far as I know, the coil used with the TFI setup is just a coil. If you have the DSII distributor and ignition module, everything should be okay.

Aug 21, 2011 | 02:38 PM

#21

Sw1tchfoot

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Joined: Oct 2010

Posts: 1,199

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From: Missouri

I wasn't thinking, I though he said he kept the old distributor.

The coil should be just fine to use.

Aug 24, 2011 | 10:11 AM

#22

Wyowanderer

Elder User

Joined: Jun 2010

Posts: 509

Likes: 4

From: Casper, Wyoming

Quote:

Originally Posted by Vanaroo

The TFI coil will work with DSII, but not for very long. Better to replace it with a round Ford coil.
And ignore the gofastforless site. It's a fix for a problem that doesn't exist.

Aug 24, 2011 | 10:32 AM

#23

nevrenufhp

Cargo Master

Joined: Feb 2003

Posts: 2,341

Likes: 5

From: Sacramento

Going from points to a dspark, the go fast for less would be a simplistic wiring option.

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Aug 24, 2011 | 02:02 PM

#24

gfw1985

Cranky Old Guy

Joined: Mar 2008

Posts: 3,562

Likes: 6

From: Raphine, Virginia

While I admit wiring is my strong point(if I have one), I've never understood why people think it's so hard to wire a DSII. Plugs are available at NAPA if needed. After about 76 it's plug and play. Two simple wires back to ignition switch and it's done.

Aug 24, 2011 | 04:06 PM

#25

nevrenufhp

Cargo Master

Joined: Feb 2003

Posts: 2,341

Likes: 5

From: Sacramento

Wiring is mine too. I didnt want just a dspark though. I went with an aftermarket box/ module to maximize its potential.

Aug 24, 2011 | 04:48 PM

#26

Vanaroo

Junior User

Joined: Aug 2011

Posts: 65

Likes: 1

From: Mount Juliet, TN

Quote:

Originally Posted by Sw1tchfoot

I believe the problem is that the timing is computer controlled on a TFI dizzy.

That's why I switched to duraspark 2. I had the tfi4 system and it looked fairly new but the more I read about it (I'm new to this stuff) I learned the timing was controlled by the computer. I could see that all the sensors and emissions stuff had been removed. I figured the computer was no longer getting the correct info it needed to adjust timing with. So I removed the computer and the tfi distributor and added the duraspark 2. It was an easy swap even for a beginner. I had the ds2 coil from the donor vehicle but I tried just plugging in to my old tfi coil and it worked so I kept it. I'm trying to squeeze all the mpg's out of this van that I can and that's what got me interested in the recurve mod. Last weekend I put in a can coil and I must say, I believe I notice a difference. I think the tfi coil ran better for me but I don't want to be frying ignition modules.

I'm learning a LOT on this site. Thanks guys for all the great info!

Aug 24, 2011 | 08:19 PM

#27

Harte3

Postmaster

Joined: Dec 2006

Posts: 3,603

Likes: 10

From: Spokane, WA

Duraspark_distributor_recurve_instructions_index

Read through that on recurving.

Sep 21, 2011 | 01:48 PM

#28

Sw1tchfoot

Posting Guru

Joined: Oct 2010

Posts: 1,199

Likes: 1

From: Missouri

Does anyone know if all Reluctor arms are welded equally? I swapped mine out like a month ago for another one that I limited the advance on (so I wouldn't have it sitting undrivable), but I never rechecked the timing. I just made sure I limited and used the same side so it wouldn't be 180 degrees off.

You know, you like look under it and you can see that the pieces are welded together; so I just wondered if they may possible that out of all the reluctors they made that different ones could be a couple of degrees off?

Dec 3, 2011 | 05:54 PM

#29

graflexmaster

Freshman User

Joined: Jun 2011

Posts: 49

Likes: 0

From: Tacoma Wa

Quote:

Originally Posted by BaronVonAutomatc

I've never used them before, but I'm going to send my dizzy to Advanced Distributors for a rebuild/recurve. They sound like they know what they're doing.

I've known Jeff at advanced dist for several years..and he is considered in many circles as the #1 Dizzy guru. I would recomend his work to anyone...

I would send my own dist work to hin, but I have my own Sun Dist mach. and do my own as needed.

Oct 25, 2014 | 09:43 AM

#30

juit

New User

Joined: Oct 2014

Posts: 4

Likes: 0

Im trying to do this mod on my 302 2121 edelbrock 600 cfm carb

I left the lite spring only

One is 10L And the other 15 L with 1 g weights

idle 12
1500 18
2000 21
2500 25
3000 30
3500 35

idles the same in city rich mixture

at 65 miles 5th gear the AFR leans too much that it dissapears :0

way too agressive

feals very strong at launching from 0

no pings no hessitations

but smells a lot of gas fumes because of the lean mixture

should I wait for the mr gasket springs?

after it warmed I had some problems starting it so I backed out to 12 again or I could leave it at 10 like the mechanic left it

What springs should i use?

Thanks

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