EFI Throttle linkage Problem (NOW WITH DESCRIPTIVE PICS!!!!)

marty_08 Seriously Crusin Dubber

191 posts · joined Dec 2004 · 12 Jul 2009, 6:30 pm

#723683

Not sure were to post this question but here it goes!!

I have quite tall manifolds from a set of twin IDF webers and have nearly complete a FI conversion. I have a set of injection perfection throttle bodies http://www.injectionperfection.com.au/content/view/21/71/ (didn't pay as much as stated thankfully). Great bolt on TBs.

THE PROBLEM: It's for a manx buggy, the tall manifolds are port matched to TBs and to my CB performance wedge-ported heads (so want to keep them + tall = more torque apparently!!) but i'm having difficulty with throttle linkage.
I have a hex bar linkage and a scat pivot linkage from carby setups. Due to it being a manx buggy there's not much room above the TB because of the body combined with the tall manifolds = difficulty with crossbar linkage. ALSO because of the tall manifolds the pivot linkage is "too low" and it doesn't turn the throttle arms in the opposite directions (needs clockwise on left and counter-clockwise on right/drivers side!!!).

What should i do!!!!?!????????

This is the last major difficulty i have with my conversion. Is there somewhere in sydney that does custom throttle linkage work like this that i should be chatting to (Carby services at burwood perhaps)?????? been on efihardware.com.au and they have the gear but not the bracketry to mate to the new TBs (need to talk with the guys from injection perfection too but thought i'd chat to you all!!!!)

Has anyone tried the Berg Fan Shroud Mounted throttle linkages?????????

Any help would be greatly appreciated - so close but soooooooo far!!!!.

Marty

😏 Gotta love a Buggy!!! 😏

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 12 Jul 2009, 7:45 pm

#723713

Hi

I saw setup once using push bike handbrake cables, not sure how well it worked.

Steve

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 12 Jul 2009, 7:59 pm

#723724

well i like the berg ones, nice and adjustable, easy to sync, plenty of travel......set and forget

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 13 Jul 2009, 7:47 am

#723807

Take the set up over to Boris at Vintage he has solved similar problems

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

reub VWRX is gone...

2,054 posts · joined Sep 2002 · 13 Jul 2009, 9:29 am

#723819

I wouldn't mind seeing photos👍

Reub

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 13 Jul 2009, 3:41 pm

#723869

Hi

I may not have read your problem correctly, but you said "(and it doesn't turn the throttle arms in the opposite directions (needs clockwise on left and counter-clockwise on right/drivers side!!!)."

All carburettors turn the same way, to get a left and right opening you normally turn one carburetor around, say an IDA or similar, you have all the mixture screws on the fan housing side, not the the left carburettor with the mixture screws facing the fan housing and the right mixture screws facing out wards.

Steve

HappyDaze Superannuated

2,887 posts · joined Jun 2009 · 13 Jul 2009, 3:54 pm

#723871

1303Steve wrote:Hi

I saw setup once using push bike handbrake cables, not sure how well it worked.

Steve

Cables could be trouble - they tend to become "sticky". They are about as nice as Tiltadoors!

Greg

I'd rather wear a Beetle out by racing it than by polishing it!

camando Commited Dubber

52 posts · joined Jun 2006 · 13 Jul 2009, 4:40 pm

#723876

I made twin bike cables for my carbs when I had the blowers on. They worrked fine and were dead easy to sync.
Now I have EFI, I stuck with the standard Ford cables in a twin setup.
If it was OK for them in 87 and they still work
I figure they will last me a while.

OEM gave up on linkages in the 70's

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 13 Jul 2009, 6:49 pm

#723899

yeah, somewhere i have seen a "splitter" box that took the main accelerator cable and split for two out the other side........not sure if it was a motorbike accesory or mountain bike, but this would be handy if you go that route

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 13 Jul 2009, 6:54 pm

#723900

I run my EFI to the throttle using a cable through a 8 mm SS tube

works well with a nice smooth radius and a few small bends to align the tube to the stock opening and to the throttle body butterfly have added a bit of oil n grease t othe inside of the tube make it run SM OOT TH

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

camando Commited Dubber

52 posts · joined Jun 2006 · 13 Jul 2009, 8:31 pm

#723921

I had a look at
torana handbrake cable splitter
or a freestyle bmx brake cable splitter off the neck swash plate.
in the end just mounted the cables and used a cable clamp to join the 3 together

Gracey Wolfsburg Wizard

511 posts · joined Feb 2003 · 13 Jul 2009, 8:56 pm

#723931

CSP centre pull linkage, works with CB big beef manifolds, and is the easiest linkage to sync.

If you go with cables, show us some pics.

ian.mezz I never said, I could write or spell

3,913 posts · joined Sep 2004 · 14 Jul 2009, 12:21 pm

#724007

but not sure how 🤪🙅🤪

1303Steve wrote:Hi

I saw setup once using push bike handbrake cables, not sure how well it worked.

Steve

😂🤪😂🤪😂
car forums. where a lot of peoples good intentions end up taking a good old car off the road forever never ever to see the road again. 🥲

marty_08 Seriously Crusin Dubber

191 posts · joined Dec 2004 · 19 Jul 2009, 1:36 pm

#724802

Hey everyone, thanks for the suggestions and advise.

Tried fitting up the Scat centre pull linkage and as thought couldn't get enough angle on the right side to come even close to the throttle arm as it would hit the bottom of the alternator as it travels under it. (SEE PIC)

In the pic you can see how far the right throttle body sits towards the rear of the car, this looks to be much further than i've seen on other cars in pics. Is there a problem?? My Manifolds are identical, should they be???????

Hopefully the pics help everyone understand what problems i'm having. Any further suggestions before i think about a gene berg shroud mounted unit????

Marty

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😏 Gotta love a Buggy!!! 😏

marty_08 Seriously Crusin Dubber

191 posts · joined Dec 2004 · 19 Jul 2009, 1:44 pm

#724803

note that the manifold aren't bolted up tight hence the slight lean in the pics that i didn't have enough hands to hold the camera, scat linkage arm and manifold/throttle body.

See pic 'from left to right 2 you (the last one) you can see how far rear-ward the right manifold and throttle body are, is this normal???

Is there 'sides' to manifolds, heads etc etc??????? as had to mod the old empi hex bar linkage when i put it on this new engine!!!!! 🤪

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😏 Gotta love a Buggy!!! 😏

marty_08 Seriously Crusin Dubber

191 posts · joined Dec 2004 · 19 Jul 2009, 1:47 pm

#724806

This is the pic (wouldn't fit in last post!!!) AND i did have it rotated when i uploaded it so sorry if anyone gets a sore neck (tilt head right)

Because of this position difference i'm a little worried about
a) this scat linkage working
b) even a berg shroud mounted one working
c) is there a prob with the manifold or head that i have on that right (drivers) side????

Marty

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😏 Gotta love a Buggy!!! 😏

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 19 Jul 2009, 2:48 pm

#724813

Gracey Wolfsburg Wizard

511 posts · joined Feb 2003 · 19 Jul 2009, 6:58 pm

#724849

In the pic you can see how far the right throttle body sits towards the rear of the car, this looks to be much further than i've seen on other cars in pics. Is there a problem?? My Manifolds are identical, should they be???????
Marty

The reason for the above is because your using non offset manifolds.
As I said above CSP linkage works with these manifolds, that is what I'm using on one of my dubs on the other one I'm using the Scat linkage.
I had the same problem as you, only in a different place. I had to bend the passenger side linkage arm to work with a stock fanshroud, I bent it under the airhorn for the heater. That might work for you.

Gracey Wolfsburg Wizard

511 posts · joined Feb 2003 · 19 Jul 2009, 7:04 pm

#724851

Ahhhh, I just noticed why your having problems.

The throttle plates are higher in the throttle body, compared to carbs, where the throttle plates are at the bottom, closer to the manifold.

Crossbar linkage may be your best bet.