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[GMCnet] Manifold or Headers [message #135716]

Sat, 23 July 2011 12:26

berndh

Messages: 33
Registered: January 2007

Karma: 0

Member

I took my leaking exhaust manifold off to replace gaskets and found out both
manifold were broken, and I broke off one of the bolts.

Any suggestions on installing headers or getting out the bolt?

Thanks,

Bernd

78 Royale 403

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Re: [GMCnet] Manifold or Headers [message #135718 is a reply to message #135716]

Sat, 23 July 2011 12:44

g.winger

Messages: 792
Registered: February 2008
Location: Warrenton,Missouri

Karma: 0

Senior Member

Headers,,,,I have a extra set laying around if you need some.,,60 miles w. of st. L.,,,,PL

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Re: [GMCnet] Manifold or Headers [message #135720 is a reply to message #135716]

Sat, 23 July 2011 12:54

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

I know lots of guys like keeping the manifolds. But, I am a fan of headers for no more problems. Fix that once and be done with it. There wont be any performance gain, just makes the future brighter. One less thing to worry with. Id jump on Paul's offer.
Dan

3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer

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Re: [GMCnet] Manifold or Headers [message #135752 is a reply to message #135720]

Sat, 23 July 2011 18:25

jaholland

Messages: 565
Registered: June 2010
Location: Sweet Home Alebamy

Karma: 0

Senior Member

Well Pleased With The Aluminum Intake Manifo;d
with blocked off exaust crossover
And Thorley Headers with Remflo Gaskets
on our '403 ~

~ Joe ~

/_]*[__][] *[__|] ~ * '73 TZE063V101887 "
" O----------OO--]* ~ '78 TZE168V100234 "
" " Joe & Lavelle " "
" 'sweet home alebamy'

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Re: [GMCnet] Manifold or Headers [message #135786 is a reply to message #135716]

Sun, 24 July 2011 02:21

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

Karma: -3

Senior Member

I don't know about the 403, but Jim K suggests that the center bolt (above all the rest) isn't necessary. Is that the one that broke?

If not I'm guessing you're in for some time with an EZ-Out or some other way to extract the problem child.

Larry Davick
The Mystery Machine

On Jul 23, 2011, at 10:26 AM, Bernd Hoffmann wrote:

> I took my leaking exhaust manifold off to replace gaskets and found out both
> manifold were broken, and I broke off one of the bolts.
>
> Any suggestions on installing headers or getting out the bolt?
>
> Thanks,
>
> Bernd
>
> 78 Royale 403
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: [GMCnet] Manifold or Headers [message #135881 is a reply to message #135786]

Sun, 24 July 2011 20:22

Mike Teets

Messages: 299
Registered: January 2004
Location: Dublin, OH

Karma: 0

Senior Member

Talked to a mechanic that frequently works on old vehicles... He suggested
taking a torch and burning off the heads BEFORE you attempt to remove them.
Then you can pull the manifolds/headers and soak in your favorite rust
breaker. I think he said he just welds a rod to each bolt. Claims he
never brakes one off in the head.

On Sun, Jul 24, 2011 at 3:21 AM, Larry Davick <ljdavick@comcast.net> wrote:

> I don't know about the 403, but Jim K suggests that the center bolt (above
> all the rest) isn't necessary. Is that the one that broke?
>
> If not I'm guessing you're in for some time with an EZ-Out or some other
> way to extract the problem child.
>
> Larry Davick
> The Mystery Machine
>
> On Jul 23, 2011, at 10:26 AM, Bernd Hoffmann wrote:
>
> > I took my leaking exhaust manifold off to replace gaskets and found out
> both
> > manifold were broken, and I broke off one of the bolts.
> >
> > Any suggestions on installing headers or getting out the bolt?
> >
> > Thanks,
> >
> > Bernd
> >
> > 78 Royale 403
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
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Mike, GMCing since 2002
77 Palm Beach, 260, 403
Dublin, OH
http://teamteets.com/gmc/

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Re: [GMCnet] Manifold or Headers [message #135913 is a reply to message #135752]

Mon, 25 July 2011 08:18

biggreen

Messages: 347
Registered: June 2011
Location: Northeast Florida

Karma: 1

Senior Member

Joe, which aluminum intake did you use. Did it come blocked, or did you use the block-off plates? Thanks

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Re: [GMCnet] Manifold or Headers [message #135918 is a reply to message #135913]

Mon, 25 July 2011 09:02

jaholland

Messages: 565
Registered: June 2010
Location: Sweet Home Alebamy

Karma: 0

Senior Member

biggreen wrote on Mon, 25 July 2011 08:18

Joe, which aluminum intake did you use. Did it come blocked, or did you use the block-off plates? Thanks

I used the Edelbrock Performer #27111 Olds 403 Aluminum Intake Manifold ~
W & D Tooling, {owned by my neighbor}, filled and plugged the exaust
crossover with Aluminum then machined the intake to specs `

I am well pleased with the results ~

{ scroll down to see the finished intake }
https://www.facebook.com/media/set/?set=a.1697369155175.2087795.1266255830&l=259797f926&type=1

~ Joe ~

/_]*[__][] *[__|] ~ * '73 TZE063V101887 "
" O----------OO--]* ~ '78 TZE168V100234 "
" " Joe & Lavelle " "
" 'sweet home alebamy'

[Updated on: Mon, 25 July 2011 09:06]

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