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Author Bastuck Exhaust System - 2.5" bore problems on a 1.2.
Git
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Registered: 3rd Apr 03
Location: Swansea
User status: Offline
2nd Oct 03 at 11:49   View User's Profile U2U Member Reply With Quote

I'm looking at getting one of these bad boys.

http://www.regal-shop.co.uk/asps/ShowDetails.asp?id=1718

Only thing I read somewhere that you can lose performance by having an exhaust with such a big bore. Is this true? I've got a 1.2, so performance isnt a big factor, but am I going to get any other problems with this exhaust?

Ta.
chrissri
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Registered: 8th Nov 02
Location: cardiff
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2nd Oct 03 at 12:16   View User's Profile U2U Member Reply With Quote

nah shouldnt do, my mate had a sebring oval on his sri. As far as i know there was no difference, besides that tailpipe isnt THAT big!!
Ringo Sting
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Registered: 17th Sep 03
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2nd Oct 03 at 12:19   View User's Profile U2U Member Reply With Quote

Course you loose power you dweeb, your engine needs back-pressure to work properly
ffls
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Registered: 29th May 02
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   2nd Oct 03 at 12:20   View User's Profile U2U Member Reply With Quote

With a standard engine you will get + 0 BHP
That type of exhaust is for high rev engines/Group A, powerful engines.
Mine is a 1.4 16v with 115 bhp, the engine revs faster, but the power stayed the same.
Those exhausts are expensive (if Stainless), if you want power get an inlet manifold from DBilas +20 bhp
Git
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Registered: 3rd Apr 03
Location: Swansea
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2nd Oct 03 at 12:36   View User's Profile U2U Member Reply With Quote

Did I say I wanted performance? no

I asked would I lose power. I plan engine mods as well by the way. But not quite yet.

And STFU Sting.
Ringo Sting
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Registered: 17th Sep 03
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2nd Oct 03 at 12:37   View User's Profile U2U Member Reply With Quote

of course you'll lose power
M4tt
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Registered: 18th Apr 03
Location: Potters Bar
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2nd Oct 03 at 13:16   View User's Profile U2U Member Reply With Quote

you'll lose low down torque, but gain power higher up the rev range.

Gambit
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Registered: 5th Jun 00
Location: Common Sense HQ
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2nd Oct 03 at 14:15   View User's Profile U2U Member Reply With Quote

2.5 inch is far too big for a 1.2
Git
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Registered: 3rd Apr 03
Location: Swansea
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2nd Oct 03 at 14:39   View User's Profile U2U Member Reply With Quote

Should I be looking at just getting the backbox then? or just forget about Bastuck altogether and get a Scorpian system when they finally announce one?
Git
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Registered: 3rd Apr 03
Location: Swansea
User status: Offline
2nd Oct 03 at 17:30   View User's Profile U2U Member Reply With Quote

bounce
ArdenSXi
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Registered: 12th May 03
Location: Stirling,Scotland Drives: 2.0 16v Corsa b
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2nd Oct 03 at 17:41   View User's Profile U2U Member Reply With Quote

Got my Bastuck system delivered yesterday, not had it fitted yet so dont know what it will be like. Been told by a few people ill lose low end torque but will gain power higher up the rev range.
Git
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Registered: 3rd Apr 03
Location: Swansea
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2nd Oct 03 at 18:25   View User's Profile U2U Member Reply With Quote

You can tell us what it runs like
wytey
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Registered: 9th Jun 03
Location: On a shelf in W.Y. :)
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2nd Oct 03 at 23:59   View User's Profile U2U Member Reply With Quote

aye I second that, coz I'm considering one too, bloody exp, n long drive just to find out it's crap tho
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Oct 03 at 08:07   View User's Profile U2U Member Reply With Quote

2.5" bore is usefull when you have 200bhp+.
Git
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Registered: 3rd Apr 03
Location: Swansea
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3rd Oct 03 at 12:28   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by miles
2.5" bore is usefull when you have 200bhp+.


What about 75 or 105?
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Oct 03 at 13:43   View User's Profile U2U Member Reply With Quote

will be a burden.
Git
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Registered: 3rd Apr 03
Location: Swansea
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3rd Oct 03 at 13:45   View User's Profile U2U Member Reply With Quote

I wish Scorpian would announce a system for the C, hate waiting
ArdenSXi
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Registered: 12th May 03
Location: Stirling,Scotland Drives: 2.0 16v Corsa b
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3rd Oct 03 at 16:34   View User's Profile U2U Member Reply With Quote

Ill let u know what its like, getting it fitted on thursday hopefully, got it in a box beside me the now and the bore looks huge The back box behind the tail pipe sits at a funny angle tho. Normal back boxes sit horizontal, this one sits vertical. The tailpipe still sits horizontal tho.
luca2020
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Registered: 26th May 02
Location: Maidstone, Kent
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3rd Oct 03 at 20:11   View User's Profile U2U Member Reply With Quote

lol 2.5" bore is way way to big for a little 1.2 mate, either get a backbox or go for a aftermarket system if they do them for ur car
Git
Member

Registered: 3rd Apr 03
Location: Swansea
User status: Offline
3rd Oct 03 at 22:00   View User's Profile U2U Member Reply With Quote

Would getting just the Bastuck backbox be a problem then?
PainZ
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Registered: 28th Jun 02
Location: Camberley, Surrey - Drives a Black Vectra VXR Esta
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3rd Oct 03 at 22:03   View User's Profile U2U Member Reply With Quote

no would be no problem

i would get the system, i was also thinking of going down to regal and getting one from them, however i decided to get the irmscher back box in the end,

To be honist you wont notice much of a difference in the bore sizes in a 1.2

I would get the whole system, but dont expect the gains advertised on their site, as they tested it on a 2.0 Astra coupe, so hardly anything to benchmark it against a 1.2 16v

Hope this helps

Pete
Git
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Registered: 3rd Apr 03
Location: Swansea
User status: Offline
3rd Oct 03 at 22:09   View User's Profile U2U Member Reply With Quote

I think in a way I've already set my heart on getting one, just wanted someone to say what you just have
PainZ
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Registered: 28th Jun 02
Location: Camberley, Surrey - Drives a Black Vectra VXR Esta
User status: Offline
3rd Oct 03 at 22:14   View User's Profile U2U Member Reply With Quote

They do offer a fitting service of it also,

and you can choose any tail pipe you want if you go there and they fit it

They are good chaps down regal, i was down there yesterday to pick something up for my car

bit of a secert mind
Git
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Registered: 3rd Apr 03
Location: Swansea
User status: Offline
3rd Oct 03 at 22:17   View User's Profile U2U Member Reply With Quote

I was thinking of going down the engine tuning road as well mind you.

Inlet manifold, chip, nos etc, sounds a bit fun.

Just got to wait till this free insurance runs out. And arrange a few days off for a treck to Southampton
PainZ
Member

Registered: 28th Jun 02
Location: Camberley, Surrey - Drives a Black Vectra VXR Esta
User status: Offline
3rd Oct 03 at 22:19   View User's Profile U2U Member Reply With Quote

Yeah they are very helpful down there, and they will do all that kinda thing for you,

They had the inlet manifold on disply there in a glass case, Looks very basic for 850 quid

Just tubes of metal welded together

hehe,


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