914-6 conversion throttle bellcrank addition, Where to mount it? Options

[Jim2]

Would anyone have a picture handy which shows the factory location for the throttle bellcrank pivot shaft? I'm wondering if there is a usable boss on a regular -4 (HA?) transaxle which could be drilled to accommodate the shaft or if I need to come up with some other mounting arrangement.

Jim

[mepstein]

Early transmissions have a boss. Late ones don’t. Rich Johnson (a914guy@aol.com) makes an adaptor that bolts on and then the bell crank bolts on to the adaptor.

[Jim2]

Thank you, I see now looking at pictures of older transaxles where there is some meat for a boss, my is 1974.

[carr914]

I think I have one -6 Intermediate Plate left that has the boss

[mepstein]

I used a 911 intermediate plate (same as 914-6) on my conversion but when you change the plate you have to check the pinion depth. It’s not a quick switch. I had it done during the trans rebuild.

[brant]

I built my own linkage mount and bell crank that bolts onto the back cover plate.

Pics in my race car thread

[Jim2]

I built my own linkage mount and bell crank that bolts onto the back cover plate.

Pics in my race car thread

Brant sir, thank you for leading me to your race car build, that is one spectacular machine! I took advantage of your pictures and replicated the bell crank bracket, and with that out of the way I can forge ahead with one of many other outstanding items.

[brant]

I built my own linkage mount and bell crank that bolts onto the back cover plate.

Pics in my race car thread

Brant sir, thank you for leading me to your race car build, that is one spectacular machine! I took advantage of your pictures and replicated the bell crank bracket, and with that out of the way I can forge ahead with one of many other outstanding items.

Nice Work!

brant

[eyesright]

My 914-4 trans had a threaded boss for the pivot shaft. I purchased all the (used ) bellcrank parts and installed them. Worked fine, but the more I looked at it, the more I figured it was over-engineered. I took it off, made a mounting plated for the throttle cable that I anchored to the top of the engine case just in front of the sheet metal, and connected the throttle cable directly to the carb linkage. Worked great, nice solid feel, much simpler. Couldn't figure out why they didn't do it that way originally. Sorry I don't have a photo.

I sold the bellcrank parts long ago.

[mepstein]

Sometimes you can’t get enough cable travel at the carbs without the linkage.

[Jim2]

My 914-4 trans had a threaded boss for the pivot shaft. I purchased all the (used ) bellcrank parts and installed them. Worked fine, but the more I looked at it, the more I figured it was over-engineered. I took it off, made a mounting plated for the throttle cable that I anchored to the top of the engine case just in front of the sheet metal, and connected the throttle cable directly to the carb linkage. Worked great, nice solid feel, much simpler. Couldn't figure out why they didn't do it that way originally. Sorry I don't have a photo.

I sold the bellcrank parts long ago.

I'm transplanting this six from another donor 914. I drove the donor car which had a cable from the pedal right up to the carb cross bar. It behaved like the throttle return spring needed to be stronger as the throttle would lag and close slowly. I added more return springs but found the pedal effort to be unusual, uncomfortable. I decided to just go with the six arrangement since it's close to a 911, which simply works and has good feel. I figure only bit of sheathed cable will now be nearly straight and shouldn't hang like before, same as a factory 6 car.

[speed metal army]

I ordered a 914/6 cable from terry cable 14" longer than stock. This is my design, works mint! Just another way to skin this particular cat..

[brant]

I like being able to use stock parts... like a cable

I've had to replace cables at the track during a race.
you literally have 20-30 minutes to do the job before the next run at times...

certainly don't want to have to source custom parts under that time frame.
so helpful to use stock parts...

I imagine the same could be true at an event or in another state at an event with a street car.... it would suck to need to order a custom item and wait a week for parts to arrive when you have a failure.

[SirAndy]

No bracket needed. See if you can spot the throttle cable.
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[Jim2]

No bracket needed. See if you can spot the throttle cable.
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(IMG:http://www.914world.com/bbs2/uploads/post-179-1185423324.jpg)

This makes me wonder why my cable was hanging up. Behaved like the sheath was full of grease.

Andy, do you have a 901 or a 915 behind that 3.6?

[SirAndy]

Stock 901 which was meant to be temporary and to be replaced with a 915 i have on the shelf.

That was 15+ years ago and the 901 is still holding up.
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[Jim2]

Well, that certainly instills confidence in the 901, and I'm only going to be running a 3.0. I assumed there was no way the little 901 gearbox would stand up to a 3.6 and I was worried about my 3.0 combination.

[SirAndy]

Well, that certainly instills confidence in the 901, and I'm only going to be running a 3.0. I assumed there was no way the little 901 gearbox would stand up to a 3.6 and I was worried about my 3.0 combination.

One thing to note, i don't use 1st gear at all for normal driving. I take off in 2nd.

If you are trying to put some serious torque through 1st gear, your 901 will die quickly.
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[worn]

Well, that certainly instills confidence in the 901, and I'm only going to be running a 3.0. I assumed there was no way the little 901 gearbox would stand up to a 3.6 and I was worried about my 3.0 combination.

One thing to note, i don't use 1st gear at all for normal driving. I take off in 2nd.

If you are trying to put some serious torque through 1st gear, your 901 will die quickly.
(IMG:style_emoticons/default/popcorn[1].gif)

With a 3.2 first gear is one that you have to get out of in a hurry. Not sure why I even use it. For a power upgrade consider taller gears for fourth and fifth gears in the 901. Especially if you want to run it as a GT on the interstate. I have grown to love the 901 tranny.

[NARP74]

No bracket needed. See if you can spot the throttle cable.
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(IMG:http://www.914world.com/bbs2/uploads/post-179-1185423324.jpg)

This makes me wonder why my cable was hanging up. Behaved like the sheath was full of grease.

Andy, do you have a 901 or a 915 behind that 3.6?

@SirAndy , is that a stock 914 accel cable? Did you just run it up to the next bracket above the tin? What about the connection point, what did you use on the cable end?