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Thorley Header Project Update

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Old 11-11-2009, 11:09 PM
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Default Thorley Header Project Update

All,

I just wanted to provide an update....

I dropped the car off with Nick tonight and here is the schedule of events, so to speak:

-- The car will go in tomorrow morning. First up will be a few dyno runs on their Dynojet to establish a baseline.
-- Videos will be taken and posted on Youtube
-- Their R&D guru will begin to work his magic...they will start with 1.750" primaries and use 0.375" thick mounting flanges.
-- Once a preproduction set is done and all mounted up, the car will go back on to the dyno. The preproduction set is then removed and scanned, etc., for their various pipe bending robots.
-- Production sets will be ceramic coated inside and out.
Old 11-11-2009, 11:36 PM
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cant wait to see the finished product
Old 11-12-2009, 12:25 AM
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I'll be waiting patiently
Old 11-12-2009, 01:18 AM
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Sweet!!!!, BTW I'm in contact with Nick from Doug Thorleys....If you guys want in on our group list just PM me your contact info.......Thanks

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Last edited by williamGT; 03-15-2010 at 11:26 PM.
Old 11-12-2009, 07:25 AM
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Cant wait to get them on the SS
Old 11-12-2009, 12:40 PM
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Any idea on the potential (let's be conservative) gains?
Old 11-12-2009, 01:56 PM
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Thanks, they told me that the G8 GT made 30rwhp.
Old 11-12-2009, 02:14 PM
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William-- was that number with long tube headers?
Old 11-12-2009, 03:24 PM
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Yes, that's their LT headers on the G8 GT. I'm gonna guess and say 22WHP before tune with these. Just my guess, anyone else wanna play.
Tate
Old 11-12-2009, 05:00 PM
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Originally Posted by BuickRacer
William-- was that number with long tube headers?
Yeah.
Old 11-12-2009, 06:00 PM
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I'll go with an advertised 27 WHP
Old 11-12-2009, 06:26 PM
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I don't they'll be huge gains until an intake and a more aggressive cam are in. Those three together should yield a lot of gains.
Old 11-12-2009, 07:52 PM
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Damn I wish I could afford 600 bucks right now. I'd love a set of headers. I'll say 20 - 25 crank hp over stock manifolds. Can't wait to see the finished product.

-Mike
Old 11-13-2009, 08:25 AM
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Originally Posted by CenTexSS
I don't they'll be huge gains until an intake and a more aggressive cam are in. Those three together should yield a lot of gains.
Enough for ~400 bhp/lb·ft at the crank? Or would we need more displacement?
Old 11-14-2009, 08:35 AM
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Possible!!
Old 11-14-2009, 01:59 PM
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Quick update:

Just heard from Nick at Thorley-- The best "before headers" dyno run given my mods was 258 HP and 279 TQ at the wheels. I am no expert on dynos, but Nick said that Dynojets "tend to read a bit low." Given the crappy transaxle and high-stall TC on these cars I would think a 20% driveline loss figure wouldn't be too far out of line. I thought I would post this as a "FWIW".

Anyway, on to the next phase!

Morgan

PS: My car has the OEM downpipe & OEM cat, not a Hogan setup.
Old 11-14-2009, 04:29 PM
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That's about what people get.

http://www.knfilters.com/dynocharts/63-3059_dyno.pdf

It have a k&n and magnaflow?

Last edited by neilownz; 11-14-2009 at 04:35 PM.
Old 11-14-2009, 04:52 PM
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Nick said that Dynojets "tend to read a bit low."
I thought dynojets read high, and mustang dynos read lower?
Old 11-14-2009, 05:05 PM
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Originally Posted by neilownz
That's about what people get.

http://www.knfilters.com/dynocharts/63-3059_dyno.pdf

It have a k&n and magnaflow?
Yes, both of those and a tune.
Old 11-14-2009, 05:14 PM
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Originally Posted by bumpin96monte
I thought dynojets read high, and mustang dynos read lower?
You are correct, on average the Mustang dyno reads lower.

Dynos are only as good as the person operating them. The operator can set them up to read high or low. For power comparisons you need to use the same dyno setup before & after mods.

When I 1st dynoed my Wife's 06 V6 Mustang it pulled almost 400rwhp with only exhaust mods due to a wrong cal entered. The next 3 runs were 203-206 rwhp which was more of what I was hoping for.


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