[Healeys] exhaust header

[John Sims]

Posted on the Technical page of my site.

John Sims, BN6
Aberdeen, NJ
 
www.healey6.com

-----Original Message-----
From: Al Fuller [mailto:al at bighealey.org] 
Sent: Monday, April 27, 2009 10:47 AM
To: 'Alan Bromfield'
Cc: ahbn6 at verizon.net
Subject: RE: [Healeys] exhaust header

Thanks - very clear!!

Al

Al Fuller
al at bighealey.org
'62 BT-7
'65 BJ-8
'85 Rx-7


-----Original Message-----
From: Alan Bromfield [mailto:alan.bromfield at virgin.net]
Sent: Sunday, April 26, 2009 11:59 AM
To: al at bighealey.org
Cc: ahbn6 at verizon.net
Subject: RE: [Healeys] exhaust header

Hi Al.
See attached. I hope this helps. I've also copied JohnS as others may be
interested

I hope That's ok with you John - %^)

AlanB

-----Original Message-----
From: al at bighealey.org [mailto:al at bighealey.org]
Sent: 26 April 2009 14:19
To: Alan Bromfield
Subject: Re: [Healeys] exhaust header

Alan - can I get the pics too?
Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: "Alan Bromfield" <alan.bromfield at virgin.net>

Date: Thu, 23 Apr 2009 16:53:30
To: <Warthodson at aol.com>; <healeydoc at sbcglobal.net>
Cc: <healeys at autox.team.net>
Subject: Re: [Healeys] exhaust header


Hi Gary.

I'm not convinced that these new rubbers will settle very much. A sixteenth
maybe but not the half inch plus you are looking for.  My solution was a bit
different and can best be explained with the pics attached.  The list will
strip them for others so bear with me.

The clearance for the rebound rubber to the top of the engine mount rubber
is 1/22" (see clearance.jpg) and you are expected to shim that down to
reduce the gap.  The gap is enormous and will take more than shims!  1/22"
is less than 1mm and any settling in the engine mount would use up that gap
very quickly.  It certainly wouldn't settle further once the gap had closed
completely.  The diagonal offset I mentioned in the engine mount block,
presents an edge to the rebound rubber and not the pair of metal plates that
would be expected if the plates were parallel. My fix came in two parts.