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#1 |
Registered Member
Join Date: Jan 2001
Location: northwest fl
Posts: 14
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![]() I am installing a set of aluminum heads on my 89GT. I have a cobra intake and I wonder if there is anything to gain from plugging the exhaust crossover. The smog pump has been removed.
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#2 |
Registered Member
Join Date: Jun 1999
Location: Evansville, Indiana
Posts: 182
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![]() The exhaust crossover on the the H pipe section???
You never wish to plug this crossover. Crossovers are designed to aid in the equalization of the exhaust gas pulses and aid in creating a smoother exhaust flow out of the rear end. If you were to block such passage way you could possibly loose performance and I bet a noticeable degradation in exhaust sound quality could rear its head. |
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#3 |
Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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![]() I think he's referring to the air tube connecting the back of the heads. There's no point in having the air tube on the back of the heads if you don't have an air pump.
------------------ 351W 89 Mustang GT Convertible |
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#4 | |
Registered Member
Join Date: May 2001
Location: Tacoma,wa,usa
Posts: 41
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![]() Quote:
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#5 |
Don Corlione
Join Date: Jun 2001
Location: Omaha NE USA
Posts: 491
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![]() I've seen them plugged with bolts before. I'm not sure what size.
------------------ Eric - 89 Mustang LX coupe 302 - Cobra Intake - GT40p heads - TFS stage 1 cam - FRPP 1.6 roller rockers - Naturally Aspirated 3:73 gears - KYB shocks and struts - Eibach springs - HPM Mega-bite Jr lower control arms - HPM upper control arms |
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#6 |
or '331 LX Eric'
Join Date: Jan 1999
Location: Columbus, Ohio
Posts: 2,142
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![]() jimberg has it right.
I have TFS TW heads on my coupe and purchased the proper plugs directly from Trick Flow for like $6. E ------------------ 1991 5.0 LX Coupe - 38,000 miles 13.17 @ 106.14 mph w/ 2.138 60' |
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#7 |
Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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![]() The plugs for the front are the same plugs for the back. Short 5/8" coarse thread bolts should work.
This is what the real one looks like. ![]() ------------------ 351W 89 Mustang GT Convertible [This message has been edited by jimberg (edited 07-13-2001).] [This message has been edited by jimberg (edited 07-13-2001).] |
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Thread | Thread Starter | Forum | Replies | Last Post |
exhaust cross-overs?? | Simi Stang | Windsor Power | 7 | 12-09-2002 01:20 PM |
Speed Secret # 4 | jim_howard_pdx | Windsor Power | 13 | 11-10-2002 03:42 PM |
Speed Secret # 3 | jim_howard_pdx | Windsor Power | 13 | 11-09-2002 10:35 AM |
Header gaskets | Stang951 | Windsor Power | 18 | 11-01-2002 05:57 PM |
Can I plug H-pipe exhaust return? | sfinn1 | Windsor Power | 2 | 07-22-2001 09:19 AM |