S38 throttle linkage repair kit (pics up)

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mooseheadm5
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S38 throttle linkage repair kit (pics up)

Post by mooseheadm5 »

As seen in this thread:
http://www.mye28.com/viewtopic.php?t=86319

The problem? The main throttle linkage on your S38 is wearing out. Solution? Buy a new one. Umm, yeah. The part has been discontinued and costs $500 from the discount dealers if you can get it. Plus, it'll wear out again.

Image

The real solution:

Image
The old link is at the top. I had already broken the plastic bushings out of this one to see if I could bore it out enough for the bearings. I could not, so I had new links laser cut (middle link.)

Remove the slop in your throttle linkage for good. The worn plastic bushings and worn pivot pins are replaced with shielded stainless bearings. The replacement process is simple. Just grind or drill the pins out of the link and bolt in the replacement.

By Tuesday I'll have the replacement links in stock. The repair kit will consist of:
Laser cut, polished 304 stainless steel link
Ball bearings
Stainless shoulder bolts
Stainless nylock nuts
Two sizes of drill bit
Bronze bushings to replace part 2 in the picture above (plastic ones NLA from BMW)
Repair instructions

I only ordered 20 links this time and 3 are spoken for so there are 17 up for grabs.

No PMs, please, just post your questions and dibs here.

Cost: $70 shipped to the lower 48. Discounts on multiple kits (shipped to same address with only one set of drill bits) for those of you out there that are lucky enough to have multiple S38s.

Image
Try that with your linkage. If your linkage flops down, the bushings are worn.
Last edited by mooseheadm5 on Feb 15, 2011 12:23 PM, edited 3 times in total.
Mark in Toronto
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Post by Mark in Toronto »

I'll take one, cash in hand, pick-up at Vintage.

Can payment be processed through the Moose website?

Looking forward to seeing the picks.
mooseheadm5
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Post by mooseheadm5 »

I'll put your name on one to bring to Vintage.

As soon as I have all the pics and pricing info I'll set up a page for the group purchase of these so you can pay through the website.

I've already drilled out the pins on Philo's linkage, just waiting for the links to show from the laser cutter.
edlocke
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s38 linkage

Post by edlocke »

1 for me. p/u V@V. thanks!
Karl Grau
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Post by Karl Grau »

AKM5
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Post by AKM5 »

I want one set.
L_N_Love
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Post by L_N_Love »

Put me down for one please.
JBort
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Post by JBort »

I'll go for one.
Please add me to the list!
JBort
funfunfer
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Post by funfunfer »

I will take one.
Mark for pickup at "The V"
Thanks,
Jim
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Post by mooseheadm5 »

Thanks guys, keep the dibs rolling in. I'll post pics and price tomorrow or Tuesday as soon as I get the links from the cutter.
cgraff
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Post by cgraff »

mooseheadm5 wrote:Thanks guys, keep the dibs rolling in. I'll post pics and price tomorrow or Tuesday as soon as I get the links from the cutter.
Put me down for one also.

Thanks

-Chris
wjosh45
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Post by wjosh45 »

I'll take one also
MicahO
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Post by MicahO »

Hi Paul - put me down for one --
Ken H.
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Post by Ken H. »

Need one set.
Thx.
mooseheadm5
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Post by mooseheadm5 »

Just opened up a box of 20 links. Pics coming tonight!
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Post by mooseheadm5 »

Pics up!
Any questions?

Price shipped is $70 (lower 48.)
Price picked up at V@V paid in cash: $65. Bring your linkage up to the table and I'll even help you fix it.
Last edited by mooseheadm5 on Feb 15, 2011 12:24 PM, edited 1 time in total.
bac914
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Post by bac914 »

I feel obligated to buy one, but until I read this thread I didn't know I had a problem. After inspecting my linkage, there is definitely slop...if it's not replaced, will there eventually be a failure? Or if it is replaced, will there be a noticeable difference when driving?

Sorry for the dumb questions, just trying to get educated and manage my already long list of things I need to work on.

Thanks,
Brian.
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Post by mooseheadm5 »

The linkage isn't going to fall apart, but the more it wears the less your throttle opens at full throttle. It makes a huge difference for people running standalone fuel injection, too, because there is inconsistent throttle position signal.
Philo
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Post by Philo »

Mine is so warn I believe it's the cause of the dreaded low rpm herky jerky that I know a lot of you uys have experienced. :laugh: And yes.., if you have a stand alone or plan on migrating to one in the future this part is a must. My TPS voltage signal bounces enough to trigger my acceleration enrichment which cause a poor idle, surging at cruise and light throttle, and worst of all poor fuel economy.

Here's a datalog image that shows the havoc a worn linkage can cause.

This one is at 1500 rpm.
http://phil.files.infostreet.com/M5_Ima ... rSurge.jpg

This one at idle.
http://phil.files.infostreet.com/M5_Ima ... Surge2.jpg

Paul, confirming here that I need two
Last edited by Philo on Feb 15, 2011 1:58 PM, edited 1 time in total.
edlocke
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linkage fix

Post by edlocke »

Looks like a great fix Paul..! Now can you do something about that ugly thumb of yours....... :laugh:
Rich Euro M5
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Post by Rich Euro M5 »

Paul,

Put me on the list.

What is your PP addy?

Rich
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Post by mooseheadm5 »

No paypal yet for these, I am trying to see if I can drop the price a little with a different hardware supplier. Please stand by.
bac914
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Post by bac914 »

I have that subtle low rpm surge too. I can move my linkage maybe 1/4 inch before it engages the throttle. If a new linkage can fix that (and I can certainly see the possiblity there), then I'm in.

Put me down for one please.

Thanks,
Brian.
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Post by L_N_Love »

Noob question: So the linkage has to be removed from the car to perform the fix? If so, how difficult is that? Pitfalls?

I get a little concerned seeing those springs.
mooseheadm5
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Post by mooseheadm5 »

Hear that? Its the sound of the price dropping!

Leonard,
It does require removal of the throttle linkage, but it is easy. I will put up instructions this weekend. If you want to wait till Vintage, we can probably do the repair in about 20 minutes.
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