Anyone Running a Speed Demon?

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Apr 14, 2009 | 03:41 PM

Binnie77

Thread Starter

Drifting

Joined: Jan 2001

Posts: 1,841

Likes: 3

From: Halifax, NS, Canada

Anyone Running a Speed Demon?

If you are running a Speed Demon I would love to pictures of your accelerator linkage

Apr 14, 2009 | 04:00 PM

gkull

Team Owner

Joined: Apr 1999

Posts: 21,953

Likes: 1,445

From: Reno Nevada

2024 C3 of the Year Finalist- Modified

I bought every kind of adjustable and finally figure out that the smart thing to do is just make your own.

I don't have a picture. My car is in a body shop right now

Apr 14, 2009 | 04:10 PM

BillysRed1980

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Joined: Apr 2009

Posts: 54

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From: Indianapolis Indiana

I have a 750 speed demon on my 1980. I didn't replace anything other than the Q-jet and intake when I installed it. I just bolted up the accelerator wire and the TV cable onto the speed demon, and it worked! I'll post some pictures later tonight for you.

Apr 14, 2009 | 04:24 PM

baxsom

Le Mans Master

Joined: Jun 2008

Posts: 5,284

Likes: 235

From: Rockledge FL

no pics but i just used the standard lokar cable and bracket and voila perfect.

it is on a th400 so no tv cable necessary but lokar has one of those as well

Apr 14, 2009 | 04:27 PM

Binnie77

Thread Starter

Drifting

Joined: Jan 2001

Posts: 1,841

Likes: 3

From: Halifax, NS, Canada

Here is a picture of my present setup. The outside cable is cruise control and the inside one is throttle. If I didn't have to have that pair of return springs on the front, I would be happy with what I have. In order to get the carb to return to idle I have to have a fair tension on those return springs which in turn makes for a pretty stiff pedal. Maybe I should be looking for another problem as with both cables disconnected and the springs unhooked, the carb will not return to idle.

Apr 14, 2009 | 04:46 PM

BillysRed1980

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Joined: Apr 2009

Posts: 54

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From: Indianapolis Indiana

Quote:

Originally Posted by Binnie77

If I didn't have to have that pair of return springs on the front, I would be happy with what I have. In order to get the carb to return to idle I have to have a fair tension on those return springs which in turn makes for a pretty stiff pedal. Maybe I should be looking for another problem as with both cables disconnected and the springs unhooked, the carb will not return to idle.

I have the idle problem too... same solution, lots of spring tension... oh well, gives the car the same feel as a euro sports car (my old Bimmer and my Dad's Jag both had rediculously heavy pedals).

Apr 14, 2009 | 04:48 PM

pauldana

Race Director

Joined: May 2003

Posts: 10,956

Likes: 409

From: California

I want your carburetor also! nice

Apr 14, 2009 | 05:30 PM

iNdigo

Pro

Joined: Nov 1999

Posts: 520

Likes: 5

From: Front Range

Quote:

Originally Posted by BillysRed1980

I have the idle problem too... same solution, lots of spring tension... oh well, gives the car the same feel as a euro sports car (my old Bimmer and my Dad's Jag both had rediculously heavy pedals).

WOW, okay this is very reassuring. Over the weekend, I tuned my setup, and the only way I could get the carb to hit idle was to push the butterfly linkage forward by hand. It seems as though there is ever so much play in the throttle linkage, perhaps by way of a weak butterfly return spring, that prevents the carb from idling down from acceleration.

Which is really irritating me, because I got the darn thing to idle at 500RPM, thanks to a fully balanced rotating assembly and proper mixture with my new Wideband O2 sensor. After light accel, it settles down around 1000 RPM. I want the car to stumble back and forth, rocking me gently to sleep! I want to hear the individual cylinders firing, as it does at 500RPM!

I'll have to try the heavier return spring, I'm just using some cheap (read: expensive) Lokar setup right now.

the blonde weasel