914 2.0 throttle body, intake air leak Options

[Lulu13]

Hello
I have a Porsche 914/4 2.0 1974 with D-Jetronic, I have an intake air leak on my throttle body shaft.

Is it possible to overhaul this throttle body?
in order to eliminate intake air leaks?

thank you for your help

Sincerely

[chmillman]

Yes, it's possible and indeed necessary. I don't know however who here is doing them now, or what the recommendations for rebuild services in the US are.

Wait - I just saw your region is listed as "suisse". Are you in the French-speaking area of Switzerland? I am probably not far from you.

(IMG:style_emoticons/default/welcome.png)

[fiacra]

Hello
I have a Porsche 914/4 2.0 1974 with D-Jetronic, I have an intake air leak on my throttle body shaft.

Is it possible to overhaul this throttle body?
in order to eliminate intake air leaks?

thank you for your help

Sincerely

Yes. As far as I know not really a job you can do on your own, unless you are a machinist and have all the appropriate tools. I would recommend you send it to Bill Fowler at Sparxwerks. International shipping might be slow and expensive, but you'll get quality work. You have to contact him first and not just send it in.

I have two of his fuel pumps for my VWs and they are works of art. I have been planning on sending him my throttle body for restoration. Here's what he wrote to me about that service:

"I do rebuild lots of the Porsche 914 throttle bodies. With that said, I do advise customers to close the throttle plates on the throttle body. Stick a bright light under the throttle body and snap a picture. This shows how much wear there is on the throttle plate by the light coming around the plate and in the throat of the throttle body. Not all of those throttle bodies can be rebuilt/restored. If it is a high mileage throttle body, the throttle shafts or bores wear and the plate can then shift and rub against the side of the throat. In really bad cases, the throttle plate is too worn and there's a deep groove in the throat where the plate rubbed. I have a customers 914 throttle body here now. It has light to moderate wear in those parts. I'll install new throttle shaft bushings to remove that wear and vacuum leaks and he'll have just a bit of wear on the throttle plate and throat but it will still be adjustable on the adjustment screw and work fine.

If I ever find any free time, I'm going to try to get some new oversize throttle plates made. I can then bore out the throats of the throttle bodies and install the new throttle plates. The late Vanagon throttle bodies seem to all be really worn in that area.

I charge $250 to rebuild those throttle bodies. You can see a few of the 914 throttle bodies restored along with other restored parts on my instagram page- https://www.instagram.com/sparxwerksllc/

[DC_neun_vierzehn]

Wow. His work is beautiful.

https://www.instagram.com/p/DOI43kCEaxh/?ig...XUxbGF5aThxdQ==

[chmillman]

A little closer to home - if you are indeed “en suisse” - might be these guys:

https://www.prodat-racing.de/ShopProdat/pro...products_id=359

I have not used them personally, I had mine rebuilt by a friend of my FI specialist here who is a retired precision machinist. But the quality looks good and the price is reasonable. Wait time ~ 5 weeks though.

[Lulu13]

Hello

Yes indeed, I live in Switzerland near Lausanne, and you?

Thank you for your valuable information.

I'm going to contact this company in Germany (thanks chmillman)
which will certainly solve my little air intake problem.

My car runs very well, but my retarder is a bit too high and this air intake on my throttle shaft doesn't help me adjust it.

I'll keep you posted.

[chmillman]

Hello

Yes indeed, I live in Switzerland near Lausanne, and you?

Thank you for your valuable information.

I'm going to contact this company in Germany (thanks chmillman)
which will certainly solve my little air intake problem.

My car runs very well, but my retarder is a bit too high and this air intake on my throttle shaft doesn't help me adjust it.

I'll keep you posted.

I’m in St-Légier - about 20 minutes away. Also have a ‘74 2.0. I’ll send you a PM with my local coordinates !

[Lulu13]

on se connais (IMG:style_emoticons/default/biggrin.gif)

[JeffBowlsby]

A little closer to home - if you are indeed “en suisse” - might be these guys:

https://www.prodat-racing.de/ShopProdat/pro...products_id=359

I have not used them personally, I had mine rebuilt by a friend of my FI specialist here who is a retired precision machinist. But the quality looks good and the price is reasonable. Wait time ~ 5 weeks though.

Thx Mitch. I’ll add this to the European vendors list. Send me more if you have more.

[chmillman]

on se connais (IMG:style_emoticons/default/biggrin.gif)

Ahhh… ‘near’ Lausanne…. Comme un peu plus au nord? Lulu comme les premières deux lettres de ton prénom? (IMG:style_emoticons/default/beerchug.gif)