I have a couple of equal tube length Hooker headers that seem to work really
well on my car but stick out the bottom too far. I've bounced them off the
floor and cracked them a few times. I switched what may be a Monza because I
had it floating around the garage. I noticed the power loss. Thankfully Road
Atlanta allowed a lot more momentum carrying than TX World. I should probably
source a new TR4A header rather than scrounge up used stuff.
Sent from my iPhone
On May 4, 2012, at 10:40 AM, toodamnfunky@comcast.net wrote:
> Go with the ceramic coating, there is no justification other than budget to
not coat it.
>
> They all claim to improve the flow. My experience with Stahl is mixed for
the TR4/IRS.
>
> I had to mo dify my frame ( not so for the live axle car ) The general weld
and bend quality
>
> was good but fit up to the head was poor. Mine is coated inside & out and
engine bay
>
> temps were reduced.
>
> just my .02
>
> jim g
>
>
>
> ----- Original Message -----
>
>
> From: "George Harmuth" <harmug@us.ibm.com>
> To: fot@autox.team.net
> Sent: Friday, May 4, 2012 6:38:17 AM
> Subject: Re: [Fot] Fot Digest, Vol 66, Issue 9-Stahl header
>
> "the use of a Stahl in a Spitfire also requires some pretty
> good changes to the frame and right-side suspension upright.
>
> Thanks for the info everyone. My bell housing has a large notch in it and
> the frame rail looks like the flange was beat into submission sometime in
> the distant past. I'll bet there was a Stahl header installed by a PO. If
> not, I have a good start on the mods to put one on now.
> Follow up question, ceramic coating or not? My thinking is not to coat, let
> the gas cool quickly and contract, reducing the volume and back pressure.
> Less pressure == better flow?
>
> thanks
> mike h
>
> G. Michael Harmuth
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