360 rear silencer

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Carl
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360 rear silencer

Post by Carl » 27 Jul 2004 07:56 pm

The rear silencer on my 360 is a crap design IMHO. If you didnt know, the inlet and outlet of the silencer are both at the engine end, meaning that the outlet then bends itself back round the silencer and out of the back of the car. Does anyone know if someone makes a more conventional silencer for it?

I'm pretty sure the 1.4/1.7 models dont have this design, but i would assume the exhausts are a smaller diameter than the 2.0, so i cant just use a silencer from them. Can anyone confirm this?

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Carl

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Post by jtbo » 27 Jul 2004 10:44 pm

I have fitted generic silencer.

I cut old silencer out with metal saw and then welded with mig new one to replace it, I used old exhaust pipe part that goes over rear axle. Then I build also new attachment to rear part.
Silencer I used was bit short so I welded also little more pipe to it.
New silencer is freeflow type so engine is now more responsive too ;)
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Re: 360 rear silencer

Post by Duvel78 » 27 Jul 2004 11:37 pm

Carl wrote:I'm pretty sure the 1.4/1.7 models dont have this design, but i would assume the exhausts are a smaller diameter than the 2.0, so i cant just use a silencer from them. Can anyone confirm this?
Right, they don't have this design, we had a topic about that in the past, with a picture:

Image

A question always in my mind: WHY this design??

If you want I can compare my old 360 GLT exhaust with the one on my 340 DL and give an answer about the diameter.
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Post by 5lab » 28 Jul 2004 12:18 am

why not? allows for a longer pipe..
Siddy-'87 360 Glt lhd convertible
Swapsea-'89 360GLT-swapped!
Leah-'84 340GL-sold! Maisie-'85 340GL-sold!
Snowy-'88 360GLE-killed by a truck! Dougle-'89 360GLT-dead&stolen!
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Post by V6 Man » 28 Jul 2004 12:49 pm

IF I remember correctly (It's been a while!!) the B19 exhausts do not have that silly arrangement, maybe you could try one of them?
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Post by Carl » 28 Jul 2004 05:38 pm

I have got an answer from elsewhere that the Renault engines had smaller bore pipes as i expected. But the B19 exhuast is of a more normal desgin so i think i will look at getting one of these and giving it a try.
Then a set of Mintex M1144 pads, a fluid change to dot 5.1, and a few othe rminor fixes (head gasket, cambelt that sort of thing :wink: ) and my first road rally in the beast is the middle of semptember.

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Post by 5lab » 28 Jul 2004 06:03 pm

what do 240s have?
Siddy-'87 360 Glt lhd convertible
Swapsea-'89 360GLT-swapped!
Leah-'84 340GL-sold! Maisie-'85 340GL-sold!
Snowy-'88 360GLE-killed by a truck! Dougle-'89 360GLT-dead&stolen!
Nessy-'86 340GL-foggy's! Grace-'86 360GLT-gone!

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Post by Duvel78 » 28 Jul 2004 08:10 pm

It's very easy, you can use the 360 GLT exhaust that was installed from 1982 to 1984 (used for the B19). It's also the same exhaust for the 345 / 360 GL, GLS with carb.

Summary about the exhausts possibilities:

Image

Image
Collection: '78 343 Black Beauty, '82 345 GLS, '83 340 DL 2.0, '84 340 DL vario, '88 360 GLT 5d (2x) & 4d (2x), '89 GLT, '91 340 vario
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Post by Fuse » 29 Jul 2004 09:16 pm

Stock rear silencer is kinda crap. So upgrading the exhaust system should be started by replacing the rear silencer. In GLT I have about 3" downpipe (not sure, could be a bit more than that) and 2.5" exhaust pipe with generic silencers. GL has 2.5" piping all the way and also generic silencers.

Offtopic in finnish.. ;) Jtbo, näkyyhän täällä "tuttujakin"... ;)
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Post by jtbo » 30 Jul 2004 06:12 am

Fuse wrote:Stock rear silencer is kinda crap. So upgrading the exhaust system should be started by replacing the rear silencer. In GLT I have about 3" downpipe (not sure, could be a bit more than that) and 2.5" exhaust pipe with generic silencers. GL has 2.5" piping all the way and also generic silencers.

Offtopic in finnish.. ;) Jtbo, näkyyhän täällä "tuttujakin"... ;)
You had turbo also in you glt? :)

OT reply: Makkiver pyörähtelee myös joskus ;)
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Post by Fuse » 30 Jul 2004 09:28 am

jtbo wrote:
You had turbo also in you glt? :)

OT reply: Makkiver pyörähtelee myös joskus ;)
Yeah. http://koti.mbnet.fi/mtn/images/autot/GLT Some bad pics. Even though it is a injection engine, GL is still surprisingly faster. :D GLT though "leaks" a bit between the exhaust manifold and turbo so it makes little power-loss. I got new seals waiting, but haven't had them installed yet.
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Post by 5lab » 30 Jul 2004 09:37 am

is that 2tone paint job on the gl origional? i never seen it on a 340
Siddy-'87 360 Glt lhd convertible
Swapsea-'89 360GLT-swapped!
Leah-'84 340GL-sold! Maisie-'85 340GL-sold!
Snowy-'88 360GLE-killed by a truck! Dougle-'89 360GLT-dead&stolen!
Nessy-'86 340GL-foggy's! Grace-'86 360GLT-gone!

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Post by Fuse » 30 Jul 2004 02:34 pm

5lab wrote:is that 2tone paint job on the gl origional? i never seen it on a 340
It is not original, that blue color is the original color.
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Post by Lonewolf » 07 Aug 2004 03:16 am

The B200E Exhaust is definately not as good as the B19E, they were both the same diameter of 2" (on mine anyway) but the B19 setup was better performing and sounding, more so on mine since the rear muffler was scrapped in favor of a resonator (aka 'hotdog'), it was a nice combination, although the front muffler was off a V8 holden (probably the prior owners attempt to save a few $$$) but all up the setup worked well and i'm going to change my b200's exhaust to a similar setup when i get round to it, but with a 2.5" rather than 2" diameter

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Post by foggyjames » 10 Aug 2004 01:37 am

I think you're looking at this from the wrong angle. The designers obviously made it that way on purpose....so WHY?!

My theory is that its there to a) provide greater pipe length, and b) increase backpressure, thereby increasing low RPM torque. So if you want better flow at high RPM, swapping to a 'straight flow' rear box MIGHT be an upgrade.

Having said that, I don't design exhaust systems for car (and I bet none of you guys do either :-P), so I'm gonna leave well alone....until I fit the turbo motor, then I'm taking it to someone who knows what they're doing with exhausts...and I don't mean Powerflow!!

cheers

James
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