Talk Morgan Forums Morgan Sports Cars Morgan Aero 8, 2012< Plus 8, SuperSports, Coupe & Aeromax 92 plus 8,Upgrading standard single exhaust

Hi All,
I absolutely love my 92 Plus 8, bought the begging of Feb this year. BUT! I am a little underwhelmed by the standard SS single exhaust note. I am about to invest in a Librands twin system with SS manifolds. Spoke to Nick, lovely guy, spent a bit of time explaining options to me. I have ordered what he recc based on wanting to have a fruity note, but not a headache. Waiting on parts to be assembled currently. In the meantime, another owner has said he was a bit disappointed with this setup and has since gone for something with more deci balls and is delighted. Its a fairly sizeable chunk of money to invest so want to get it right first time. Any experience/advice would be much appreciated. I live in Cork, Southern Ireland, so these beasts are just not around to compare.

Any help would be much appreciated.
Barry

I have the early version of the Librands exhaust where the primary pipes cross over under the sump. This may be marginally more efficient, But it is a nightmare when you need to replace a leaking sump gasket. It is also prone to air leaks. The side exit primaries of the current system don't lose much, and are much easier to maintain.

Librands used to do two versions of the silencer , one louder than the other (not sure if that is still the case?) . I have the "soft" version and it suits the sort of motoring we do , ie long distance touring. If I was wanting to be more of a hooligan, I would specify the louder version.

However another couple of pieces of general advice. The resonators on the tail pipes do absorb quite a bit of noise so either make sure these are NOT included or be prepared to by-pass them , either by sleeving with a suitable solid pipe , OR better still using side pipes which exit in front of the rear wheels. The latter will certainly a lot of "brio" to the V8 orchestra, and is only really intrusive when accelerating hard or lifting off , at cruising speeds it is pretty quiet.

On my 94 +8 I have side pipes exiting in front of the rear wheels, I also have straight through pipes from the Cats with no silencer as we don't have any restrictions, makes a great sound. This coupled with a non restrictive air intake and Tornado Chip made a noticeable difference in performance.

You're in luck Rick/ I had my 1990 system on my UK Plus 8 (an aftermarket single ss system) swapped out for a twin system. I was fortunate to find a branch manifold MMM set (1977 to 1986) on ebay.co.uk in the Rover parts-for-sale section, though they could not serve Rovers or LRs. 20 quid!! I bought rest in the higher grade ss that one must be careful in buying. The cheaper stuff shears. Been there. Some Morgan sellers sell lower quality at the same price as higher quality. Looks the same.

You have this one I believe.

You have been advised already about the stuff to buy already. Just in case, there are two different types of silencers you will normally be offered. They are very different but look identical. They change bhp to a different degree and sound as well. Your choice must be specified on order.

Your luck continues because I had my swap done by Kevin Vernon, who used to be UK's Tudor Motors before retiring to private race preparation. I then have done, myself, the same swap in Canada, for free, for two pals with Plus 8s, 1993 and a 1995. (we removed the lambdas (not a possibility for the UK) and re-chipped both the lambdas on your car are merely a choice of downpipes.
I wrote the swaps up in an article with pictures on gomog. With that article, any local competent mechanic or machinist with minimal welding ability can do the job on your valences.

A most important note. Though an exhaust note (I am very picky about just that as you are) can be affected by many things, its tone change is most remarkably improved with the choice of resonator, whether it is a twin or single system. Resonators (often called exhaust tips), deal with high pitched sounds. In the case of manufacturer, exhaust sound is regulated and monitored by bureaucrats & politicians, who do not always choose the sound we may like. For example, I do not like a LOUD sound. But I do like a DEEP one I can manage with my use of the accelerator. V8s are world famous for their exhaust notes. I simply bought clamp on sets ((they are cheap and pretty from the US) until I had exactly the tone I wanted, and then bought the weld-on version .

Lorne

Barry

One very important question I forgot to ask , does your +8 have catalysts? 1992/3 are the changeover years so you may , or may not , have them fitted as standard.

If there are absent , then you will automatically get a much more melodious tone , as the cats do absorb a lot of sound. If this is the case I would not be too concerned about fitting the quieter exhaust option.

If you do have cats then the louder option is probably going to suit you better.

Just another thought , most of the race cars use a repackable silencer, which as the name implies can be packed with differing amounts of absorbent mesh. They use less mesh for the circuits where noise restrictions are not stringent , and more for those where there is tighter control . This could be an option for you.

Barry, I have the dual Sports Librand fitted to my Catted 1999 Plus 8 and it's fairly noisy and suits me fine but as my wife is not a Morgan fan we don't tour in it at all and my runs are within the county in general.

On the occasions that I have taken it across country on the A and Motorways it really is too much of a droning noise to be honest with you and my hearing is poor, good luck with your choice, great cars these enjoy.

My first Plus 8 was a single sided standard exhaust and as you say is a whispering sound.