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rdjohnston50 · Posted: Wed Jun 25, 2008 1:19 pm Post subject: wastegate question

I'm rebuilding my blown wastegate and adding the 1 bar spring. Question - is it necessary to change the overboost sensor with this new spring?

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Nope.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Paul · Posted: Wed Jun 25, 2008 11:23 pm Post subject:

Nope but you better add an intercooler....I see a blown head gasket in your future.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Paul · Posted: Wed Jun 25, 2008 11:26 pm Post subject:

Nope but you better add an intercooler....I see a blown head gasket in your future.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

rdjohnston50 · Posted: Thu Jun 26, 2008 4:23 pm Post subject: wastegate question

geez, I'm glad I asked! I've already been thru one head-pull and would prefer not to do it again. I thought the 1 bar mod was a simple one. Didn't realize I needed to add the intercooler as well. Soooo, the modified WG will sit on the shelf for a few months till I can afford the intercooler.

Anyone out there care to offer suggestions on where to procure the intercooler and tips on installation>?

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

If Flosho still has his Thermal Hard Pipe for sale, that might be a really good option for you...he's in Wisconsin too! IMO, that would be the quickest, cheapest, easiest path for adding some charge cooling. At his asking price, it's not a bad deal either, although you'd need to source the rest of the setup (rad, pump, hoses, etc.). The other option would be to go with a PWR water-to-air IC like Eric did. May I suggest you take a gander at my Thermal Management post? More links to other options, and an overview of the relative merits to the various approaches. You could also consider a methanol injection setup, but IMO, you'd be better off with a liquid-to-air setup, unless you have the time, energy, and budget to install a 951 unit.
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erstwhile owner of just about every 924 variant ever made

rdjohnston50 · Posted: Thu Jun 26, 2008 6:39 pm Post subject: wastegate question

I appreciate the info. This looks to be a winter project

tuurbo · Posted: Thu Jun 26, 2008 8:11 pm Post subject:

Flosho's THP is a cool way to go. Don't need any extra plumbing or crap. Pump and heat exchanger - easy to fit in that cramped space.
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1980 924 turbo, MSD, Meth. Inj, otherwise stock.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

However tucking it in there near the turbo/mani is less than ideal for heat soak reasons.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

tuurbo · Posted: Fri Jun 27, 2008 7:55 am Post subject:

Or water/methanol injection!

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1980 924 turbo, MSD, Meth. Inj, otherwise stock.