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> Carb Bellcrank Equation
Tbrown4x4
post Sep 13 2019, 03:02 AM
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QUOTE(porschetub @ Sep 13 2019, 12:29 AM) *

QUOTE(johnhora @ Sep 13 2019, 03:53 PM) *

Source for the CSP Mark mentioned...

https://www2.cip1.com/ProductDetails.asp?Pr...129%2D941%2D400

out of stock at the moment but they get more all the time.

I heard they are no longer being made in the 914 application (IMG:style_emoticons/default/confused24.gif) .
Been searching for a customer for sometime,plenty in the UK but the shipping is mental for me.


I didn't think it was a 914 application, just a Type 4 application. I bought Mark's bracket and took the cable up through the front engine seal. I also lengthened the rods so they would line up with the carbs better.
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Chi-town
post Sep 13 2019, 09:20 AM
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Type 4 with pancake fan I believe is the application description.
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914werke
post Sep 13 2019, 09:52 AM
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QUOTE(Tbrown4x4 @ Sep 13 2019, 02:02 AM) *
I bought Mark's bracket and took the cable up through the front engine seal. I also lengthened the rods so they would line up with the carbs better.

@Tbrown4x4 Thanks Todd that s info I was seeking (IMG:style_emoticons/default/beerchug.gif) How did you lengthen as the rods are L+R hand threaded, coupling nuts, weld?
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euro911
post Sep 13 2019, 10:54 AM
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Wow, old thread.

I used the CSP bell crank linkage on my 2056, and it worked great.

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Got it from Pierside Parts in Huntington Beach ... they had the best price ... https://www.piersideparts.net/CSP129941400.html
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Tbrown4x4
post Sep 13 2019, 05:28 PM
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QUOTE(914werke @ Sep 13 2019, 08:52 AM) *

QUOTE(Tbrown4x4 @ Sep 13 2019, 02:02 AM) *
I bought Mark's bracket and took the cable up through the front engine seal. I also lengthened the rods so they would line up with the carbs better.

@Tbrown4x4 Thanks Todd that s info I was seeking (IMG:style_emoticons/default/beerchug.gif) How did you lengthen as the rods are L+R hand threaded, coupling nuts, weld?


Coupling nuts and threaded rod with jam nuts. I'm pretty sure ACE hardware had everything. It was only temporary until I could get a left hand tap and make longer stainless rods. That was 2 years ago!

@mikey914 As a side note, I'm testing 914rubber's throttle cable. It needs to be about 4 inches longer to be routed through the tins like OE.
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bbrock
post Sep 13 2019, 06:15 PM
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QUOTE(Tbrown4x4 @ Sep 13 2019, 05:28 PM) *


@mikey914 As a side note, I'm testing 914rubber's throttle cable. It needs to be about 4 inches longer to be routed through the tins like OE.


@Tbrown4x4 thanks for this info. So I am clear, this would be about 4 inches longer than stock cable length for OE routing through the tin to connect with CSP linkage? I'm assuming Mark's cable is stock length. Also, this would be 4" longer for both cable and sheath, correct?
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Tbrown4x4
post Sep 13 2019, 07:53 PM
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Yes, 4 inches overall. That left a nice radius following the stock routing. I haven't reached out to Mark for a while, but I thought he already had a "carb length" cable ready. He was going to send me another to try out, but I think he's changing how the pedal end is swaged onto the cable.

I just thought of something: my car never had the "yellow" fabric cable retainer that goes on the ECM bracket. That could affect total length if someone had that on their car.

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porschetub
post Sep 13 2019, 11:24 PM
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Currently out of necessity building one from a chinese copy set up ,has no roller bearings in the bellcrack,and came with cup joints as per carbed VW/Porsche 911.
I have replaced the cup joints with mini CB Performance rose joints and set the geometry and it really works well and its so simple but you need to setup right IMO easier than a crossbar and less parts to wear.
Frankly McMark put me on to this and when you play with them you see why as compared to crossbar ,cheers man.
My CB Performance crossbar is up for sale no question,take it the way you want but bellcrank setup works.
[attachmentid=712046


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porschetub
post Sep 14 2019, 11:26 PM
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Speedworks (?) have one but its a front mount that means not on bellhousing bolts,wouldn't work for me with short manifolds,looks like a fine piece however.

IMO any setup @ the flywheel end of the motor is better and the one I showed is that,finished setting up and its not easy but it works great .
Full throttle achieved and no 'tip in issues',hardest part is getting linkages the same length...fine tuning.
Attached Image
It works very well and The Dellorto's have great throttle return springs so no third spring needed.
Ready for a flaming (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) .
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