Throttle return spring 911SC

[kimlangley7]

Throttle Return spring 911SC /3.0 CIS [long spring]

After my rebuild of the throttle linkages for my SC – new bronze bushings – new throttle rod ball cups – new throttle return springs – it’s time to put everything back together.

Most everything went back without any issue – but one part – the long throttle return spring that connects the bell crank in the engine compartment with the anchor point under #2 intake manifold. It is the quintessential – brain surgery inside a phone booth.

I am asking for advise from Pelicans who have replaced this spring – for their elegant technique – process to affix the spring.

What side goes in first? The end under #2 intake or the throttle lever end?

Did you have to remove any of the intake manifold or the warm up regulator to gain access to affix the spring?

My understanding is that the long end of the spring connects to the throttle lever end- is this correct?

I’m currently using a couple of long hemostats to try to position the spring

The more I examine the limited access with the warm up regulator in place - the more I'm thinking I have to pull it to get decent access to the attachment point under #2 intake

[proporsche]

short side goes no No.2..if you remove the heater blower- i think you did ,reach from behind to install the spring

Ivan

[MichaelSJackson]

I connected the short side under the runners first. I have extremely long needle nose. One straight, the other with a 90 degree bend. I forget which did the trick.

[FL911SC]

I don't know if I can describe the technique I used, but I will try.
I can't remember if I had already removed the blower motor when I did this. It was removed after the engine when back in, but the missing spring may have been found first. Regardless, I agree that removing the blower would help.
For me, I took a long piece of dental floss (about 3 feet) and looped it through the front side of the spring (short side per Michael's post). I looped it through the first 2 coils, not the hook. I tied the two ends together so I had a 1.5 ft loop through the spring.
I then worked the spring to the back bell crank, working it under the runners, and from the top was able to get the long hook into the hole on the bell crank.
Then I pulled the floss so the spring came toward the middle runner. Once the hook got close to the hole in the runner, I was able to use a long screw driver (the long pliers I now own would have been better), and aligned the spring into the hole.
Then I cut the floss and pulled it through and out.

I hope all that makes sense. The worst part was getting the spring under the the runners to the back, but even that wasn't too bad.
If something doesn't make sense, let me know and I will try to clarify.

Good luck with it.

[kimlangley7]

Thanks All.. Got the spring connected..

Now to set a decent idle - decent initial crank - upon startup - my SC searches for idle - revs high - then low - high then low before it settles down.

wants to idle at 1100 rpm or so - I can blip the throttle and bring it down to 1000 rpm or so.


kgl