Why has nobody done this exhaust mod on a Griff?
Why has nobody done this exhaust mod on a Griff?
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Discussion

SUPERCHARGEDEANO

Original Poster:

140 posts

204 months

Tuesday 21st June 2011
quotequote all
I have seen a modification on many yank cars where they have a cut off that cuts out the middle or rear silencers and therfore makes the car sound like a nascar! Or you can have the cut backs closed and the exhaust runs it's normal route through all silencers and sounds normal. These systems are sometimes manual and sometimes electric operating. Why has no one done this on a Griff? It would be awesome, quiet on the track, or motorway and noisy as hell when you want to wake the dead!!!

Slade Alive

784 posts

188 months

Tuesday 21st June 2011
quotequote all
Drag racing a (US)street legal car aside, it's a gimmick. When at Griff stage you've passed the Halford's bolt on boutique nonsense by some maturity, if that's where you started. Sadly some have! Griff's don't need to be pretentious. They left the factory as a lightweight plastic tub with an awful lot of power for what is a very very traditional British two seat sports car.

Filos Hippos

479 posts

261 months

Tuesday 21st June 2011
quotequote all
Slade Alive said:
Drag racing a (US)street legal car aside, it's a gimmick. When at Griff stage you've passed the Halford's bolt on boutique nonsense by some maturity, if that's where you started. Sadly some have! Griff's don't need to be pretentious. They left the factory as a lightweight plastic tub with an awful lot of power for what is a very very traditional British two seat sports car.
judging by the OP's profile I guess this was genuine question from a genuine petrolhead...

In aswer to OP: you could fit a pressure operated bypass valve as on a Jag XKR.

Understand you'dd want the full monty whenever possible but sometimes circuit laws leave us little choice. You could however also opt for the additional trackday silencers...



BliarOut

72,863 posts

268 months

Tuesday 21st June 2011
quotequote all
Slade in yet another open mouth before engaging brain shocker hehe

SUPERCHARGEDEANO

Original Poster:

140 posts

204 months

Tuesday 21st June 2011
quotequote all
So does the jag pressure bypass valve operate on exhaust gas back pressure? If you floor it you get the full monty. No, i'm not interested in Halfords specials, But yes, i do track days and sprints where the db limit is normally 98 or 105. Could fit an ACT y piece (would this make much difference to the sound? The precats were removed years ago.

dnb

3,330 posts

271 months

Tuesday 21st June 2011
quotequote all
I have an Edelbrock SRT "silencer" and 2.5" pipes all through my exhaust (except where it's 3").
It sounds sufficiently NASCAR like that I have no need of bypasses - a very different sound to other Griffs.

markreilly

795 posts

201 months

Tuesday 21st June 2011
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I seem to remember clive F was thinking of designing a similiar system awhile back,try him

DonkeyApple

69,781 posts

198 months

Tuesday 21st June 2011
quotequote all
'town and country' exhausts were deemed suitable by Mr Rolls and Mr Royce back at the start of the 20th century.

Back then cars had a little lever to muffle the exhaust when entering an urban environment.

There are a lot of modern exhaust companies that do them now as upgrades as well as manufacturers doing it as standard.

As far as I am aware it was never about performance but started out being about civility and now is about fun.

Milltek and Magnaflow spring to mind.

Not convinced it would work on something like the Griff which is not a Barry wagon like the others wink

Slade Alive

784 posts

188 months

Wednesday 22nd June 2011
quotequote all
Filos Hippos said:
judging by the OP's profile I guess this was genuine question from a genuine petrolhead...
I do apologise. I didn't read the OP's profile - thought the post was about 'enjoying' a louder Griff was all!

Slade Alive

784 posts

188 months

Wednesday 22nd June 2011
quotequote all
BliarOut said:
Slade in yet another open mouth before engaging brain shocker hehe
Go leach off someone else's comments. Your frequent quest to become part of some sort of PH 'in' crowd is rather nauseating.

Hoover.

5,993 posts

271 months

Wednesday 22nd June 2011
quotequote all
Moosehunter had/has has valvy thing on his exhaust to do something v similar

BliarOut

72,863 posts

268 months

Wednesday 22nd June 2011
quotequote all
Slade Alive said:
Go leach off someone else's comments. Your frequent quest to become part of some sort of PH 'in' crowd is rather nauseating.
Ahem, you'll find I already am part of the in crowd wink

If you stop gobbling off like a knobber I'll stop pulling you up on it...

clive f

7,259 posts

262 months

Wednesday 22nd June 2011
quotequote all
BliarOut said:
Ahem, you'll find I already am part of the in crowd wink

If you stop gobbling off like a knobber I'll stop pulling you up on it...
confusedwho the hell are you????

sounds a bit suspect to me, threatening to pull his knob an stuff.



hehe

Chimpafrolic

9,637 posts

208 months

Wednesday 22nd June 2011
quotequote all
How about this?


BliarOut

72,863 posts

268 months

Wednesday 22nd June 2011
quotequote all
clive f said:
BliarOut said:
Ahem, you'll find I already am part of the in crowd wink

If you stop gobbling off like a knobber I'll stop pulling you up on it...
confusedwho the hell are you????

sounds a bit suspect to me, threatening to pull his knob an stuff.



hehe
Oi, Grifters only wink

griffdude

1,926 posts

277 months

Wednesday 22nd June 2011
quotequote all
Hoover. said:
Moosehunter had/has has valvy thing on his exhaust to do something v similar
Saw this at the growl a few years ago...... It was REALLY REALLY loud!!!!!

PMSL just thinking about the sound roflrofl


MPoxon

5,329 posts

202 months

Wednesday 22nd June 2011
quotequote all
I did look into this as I quite fancied a cabin switchable bi-modal exhaust similar to that fitted to the VXR8.

I managed to find the company that supplied the cut out valves for Vauxhall:

http://www.dmhperformance.com/

Decided against it in the end. If I used mine as a daily I would most certainly consider it but seeing as mine is purely a toy I want it loud when I take it out. If I want quiet and civilised I wont take the Griff.

450Nick

4,027 posts

241 months

Friday 24th June 2011
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I did research this as well and found an off the shelf switchable 'y' section that could be used but there wasn't really much room to fit it in. Plus I realised that I'd never want it to be quiet so it was a pointless exercise hehe

jellison

12,803 posts

306 months

Friday 1st July 2011
quotequote all
SUPERCHARGEDEANO said:
I have seen a modification on many yank cars where they have a cut off that cuts out the middle or rear silencers and therfore makes the car sound like a nascar! Or you can have the cut backs closed and the exhaust runs it's normal route through all silencers and sounds normal. These systems are sometimes manual and sometimes electric operating. Why has no one done this on a Griff? It would be awesome, quiet on the track, or motorway and noisy as hell when you want to wake the dead!!!
I had a QTP (electronic cutouts) for my ChimZ06 but they were to big to squeeze underneath so sold em on.

It still sounded like a Nascar - none of this quitening for knobbing about on track days wink


Edited by jellison on Friday 8th July 14:30

Guillotine

5,516 posts

293 months

Friday 1st July 2011
quotequote all
Hoover. said:
Moosehunter had/has has valvy thing on his exhaust to do something v similar
yes