Tom, Consensus thus far is that the BN/J7 system will have hanger issues.
Most are suggesting to drop the cross boxes, and have custom tail pipes made
that retains the around axle bend etc and exits on the drivers side with an
upturned tip to avoid digging in when reversing etc.
Apparently the increase in noise is acceptable and even good. So that seems to
be the easiest fix without disturbing the front end set up.
Robert N. Blair 65 Yellow BJ8 rnbmail@yahoo.com
--- On Sun, 10/26/08, T W <ah3000me@gmail.com> wrote:
> From: T W <ah3000me@gmail.com>
> Subject: Re: [Healeys] BJ8 exhaust questions ...
> To: "Healey List" <healeys@autox.team.net>
> Cc: rnbmail@yahoo.com
> Date: Sunday, October 26, 2008, 7:20 AM
> My BJ8's PO installed a custom system with glass packs
> under the driver's
> seat and straight pipes exiting on the driver's side.
> It's a bit noiser
> than the pre-BJ8 setups, and it does give me better ground
> clearance. I
> used to scrape the tips coming out of the driveway, but the
> driveway has
> ground the tips so that rarely happens now.
>
> My set up has a couple of problems. The pipes go straight
> back from the
> glass packs. The pipes don't make that dog-leg around
> the plate where the
> axle meets the springs, and I get some banging under there.
> Also, the PO
> didn't quite get manifold to pipe joint exactly flush,
> causing some leaking
> there.
>
> So, I'm think I'd like put a BJ7 system in mine,
> too. I prefer the BJ7/BT7
> sound to the BJ8 sound, and I'd rather not have the
> cross muffler in the
> back. I, too, am very interested if any BJ8 owners have
> installed the BJ7
> system.
>
> - Tom
>
>
> On Sat, Oct 25, 2008 at 10:32 PM, Robert Blair
> <rnbmail@yahoo.com> wrote:
>
> > Hi BJ8'ers
> >
> > We all know that the rear cross boxes on the BJ8
> catches the ground exiting
> > gas stations, especially when the rear end is lowered
> as mine is.
> >
> > Three questions are:
> >
> > 1. If the rear cross boxes are removed and replaced
> with straight pipes
> > emerging on the drivers side, is there a big increase
> in exhaust noise?
> > Anyone running in this configuration? Too noisy?
> >
> > 2. Are the front boxes and hangers of the BJ7 the
> same as the BJ8? ie can
> > the BJ8 system be replaced with the BJ7 thus
> eliminating the rear cross
> > boxes?
> >
> > 3. Who makes decent BJ8 steel branch manifold other
> than the expensive
> > racing
> > folks??
> >
> > Robert N. Blair 65 Yellow BJ8 rnbmail@yahoo.com
> >
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