924Board.org

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

It is not simple. You need to port out your intake with a dremle like Joe says and also do one of two things. Weld up your intake to create more landing for the idle bypass or make a plate to act as a new landing.

Newspeed makes a plate for this. There is an Audi throttle body of the correct vintage on ebay now.http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33558&item=2417605529

If you want to see the welded ported intake go to my site.
www.geocities.com/eturbo924
Look under my projects the engine section. You will see what I have done.

Here is one on ebay that has the mounting plate. Would be a good score.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33558&item=2417936858

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

Joes924Racer · Posted: Thu Jun 05, 2003 4:27 am Post subject:

Im using that one right now 78 924 na its made by weber redline
I got it from jpab. Turbo I didnt have to do any welding. just
ported out the intake throat to it and installed with out welding .I
saw your site you did a lot of welding.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Joe it was not very much welding. Chris at Advanced made a mistake and welded up the wrong side first. So I got the bonus plan.

Anyway if you are using the same basic throttle body you should have dangerously thin amount of material to seal the edge where the idle air bypass is.

Hey were you not the one thinking you had a intake leak. Backfires or some thing?

Think that is your issue. Take another look at your throttle body interface and you will see what I mean. The bypass is sticking out over the edge of the stock intake manifold. I think we calculated approx .050" or less of wall to seal that edge.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

78porsche924 · Posted: Mon Jun 09, 2003 2:03 pm Post subject:

I noticed in mine that there seems to be a restrictive ring installed in front of the smaller butterfly that says 25 on it. Different metal so i dunno if it is stock. Would it be safe for me to yank this and is this a stock thing?
_________________
90 944 S2
78 924 NA <---now sold and killed by new owner
snailshell trans
Bae turbo kit
to check out my 944 S2 http://www.cardomain.com/member_pages/view_page.pl?page_id=388139

78porsche924 · Posted: Mon Jun 09, 2003 2:04 pm Post subject:

I noticed in mine that there seems to be a restrictive ring installed in front of the smaller butterfly that says 25 on it. Different metal so i dunno if it is stock. Would it be safe for me to yank this and is this a stock thing?
_________________
90 944 S2
78 924 NA <---now sold and killed by new owner
snailshell trans
Bae turbo kit
to check out my 944 S2 http://www.cardomain.com/member_pages/view_page.pl?page_id=388139

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Yes you can knock it out. Check out the bolt on Bonanza article and they talk about your throttle body.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

78porsche924 · Posted: Tue Jun 10, 2003 5:13 am Post subject:

Thanks. Does it really make much of a difference anyway?
_________________
90 944 S2
78 924 NA <---now sold and killed by new owner
snailshell trans
Bae turbo kit
to check out my 944 S2 http://www.cardomain.com/member_pages/view_page.pl?page_id=388139

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Your engine will breath better but it will not make any appreciable effect. You need to port and polish your head and put in a better cam to see any improvement. Of course more compression also helps.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

Joes924Racer · Posted: Thu Jun 12, 2003 5:46 am Post subject:

No no I had it on last year the back-fire was a lean mix issue had the co adjusted. Now I have the redline single throat on. and its nice. The audi tb didnt require welding to my knowledge. I matched the tb to the intake or should I say the intake to the tb.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

81turbo · Joined: 03 Nov 2002 Posts: 1065 Location: Oakland, CA

Hey Joe can we get a picture of the Redline single throat to see how you installed it?

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Ok I made a copy and paste picture to show you what I am talking about. [/url]http://photos.yahoo.com/bc/eturbo924/vwp?.dir=/My+Photos&.dnm=ported+copy.jpg&.src=ph&.view=t&.hires=t

Take a look at the picture. I cut the air bypass off the manifold of the old throttle body and put it on the new opening. See how it is basically at the edge? If you do not look for this you will miss it. If you simply port out the intake and put the throttle body on you will not notice the issue. The air by pass basically is about out in the air. Maybe .050" or less. I do not recall the exact measurement I got.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

Joes924Racer · Posted: Fri Jun 13, 2003 2:38 pm Post subject:

[img]http://photos.yahoo.com/bc/eturbo924/vwp?.dir=/My+Photos&.dnm=ported+copy.jpg&.src=ph&.view=t&.hires=t
[/img]
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

78 924 N/a · Joined: 20 Mar 2003 Posts: 769 Location: Pacific N.W.

Could you guys fix these links, they don't work.
_________________
1978 924 n/a

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

here try this. go to my site

http://www.geocities.com/eturbo924/

then click on the picture of my car ... upper right.

then scroll down through the pictures until you see the intake and check it out.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

If you look at the photo and the theoretical end of the intake. (with out the weld that is there) You will see the wall is basically not there to seal the throttle body. Most never notice this because when you have a gasket on the throttle body it covers the air bypass but does not properly seal.

Eric
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!