Exhaust survey

[hdavis]

Time to confirm or kill a myth ina somewhat unscientific manner.

How many of your engines developed exhaust manifold leaks?
How many had cracked manifolds?
What Mileage?
What kind of driving?

For those who went to headers, do they eliminate the problem of leaks?
What kind of gaskets if any did you use when isntyalling headers?

E-mail me privately and I'll post the results.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com

 

[nate chase]

Henry,
I have headers (non ceramic coated) and have had leaks since I owned it. I
hoped they would have gotten sealed up during the motor change out but alas
no. I will redo them myself w/solid copper Mr. Gaskets (P/N 7170 $49.95).
Then I'll redo the exhaust later too. We'll see how this goes. I'll let
everyone know...

Nate '75GB (Added a nifty rock guard today for my lower radiator) Omaha
www.tconl.com/~chase

>

Date: Sun, 28 Nov 1999 08:58:54 -0800
From: Henry Davis
Subject: GMC: Exhaust survey

Time to confirm or kill a myth ina somewhat unscientific manner.

How many of your engines developed exhaust manifold leaks?
How many had cracked manifolds?
What Mileage?
What kind of driving?

For those who went to headers, do they eliminate the problem of leaks?
What kind of gaskets if any did you use when isntyalling headers?

E-mail me privately and I'll post the results.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com

 

[john wright]

Nate,
You can get those copper gaskets from Jeg's there PN for $33.99
+ s&h.
Call 1-800345-4545 or go to www.jegs.com.

J.R. Wright

>
> Henry,
> I have headers (non ceramic coated) and have had leaks since I owned it. I
> hoped they would have gotten sealed up during the motor change out but alas
> no. I will redo them myself w/solid copper Mr. Gaskets (P/N 7170 $49.95).
> Then I'll redo the exhaust later too. We'll see how this goes. I'll let
> everyone know...
>
> Nate '75GB (Added a nifty rock guard today for my lower radiator) Omaha
> www.tconl.com/~chase
>
> >
>
> Date: Sun, 28 Nov 1999 08:58:54 -0800
> From: Henry Davis
> Subject: GMC: Exhaust survey
>
> Time to confirm or kill a myth ina somewhat unscientific manner.
>
> How many of your engines developed exhaust manifold leaks?
> How many had cracked manifolds?
> What Mileage?
> What kind of driving?
>
> For those who went to headers, do they eliminate the problem of leaks?
> What kind of gaskets if any did you use when isntyalling headers?
>
> E-mail me privately and I'll post the results.
>
> Henry
>
> Henry Davis Consulting, Inc / new product consulting
> PO Box 1270 / product readiness reviews
> Soquel, Ca 95073 / IP reviews
> ph: (831) 462-5199 / full service marketing
> fax: (831) 462-5198
> http://www.henry-davis.com/ http://www.henry-davis.com

 

[nate chase]

John,
Now ya tell me...! Mine just arrived today and I had to prepay cause they
wouldn't order them in advance if I didn't. Oh well... live and learn. Geez,
I should be about 12 years old if that were the case .

Nate 75GB (Headed for some quality header fixin' time) Omaha