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Author 4-2-1, 4-1, or DBlias Flowtech, What next ?
Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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14th Jan 06 at 17:32   View User's Profile U2U Member Reply With Quote
Right im a bit stuck on what to get next performance wise, got about £200 ish to spend....

looking at either:

Janspeed 4-2-1 Manifold
Autosprint 4-1 Manifold
Dblias Flowtech forced induction - http://www.regal-shop.co.uk/asps/ShowDetails.asp?id=5285

Current spec is full system with de-cat, drilled airbox with pipercross panel filter and Dblias Inlet...

Not really sure which of the above i would benefit from the most so any help is appriciated

willay
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14th Jan 06 at 17:34   View Garage View User's Profile U2U Member Reply With Quote
janspeed manifold?
CorsAsh
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Registered: 19th Apr 02
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14th Jan 06 at 17:35   View User's Profile U2U Member Reply With Quote
The inlet system looks good mate
Rob B
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14th Jan 06 at 17:36   View User's Profile U2U Member Reply With Quote
I thought that too, it looks like proper forced induction , its dblias aswell so probably built for use with my inlet..

this manifold looks tasty..
http://cgi.ebay.co.uk/Vauxhall-Corsa-B-Tigra-1-4-1-6-16v-Exhaust-Manifold_W0QQitemZ8028883583QQcategoryZ72205QQrdZ1QQcmdZViewItem
Wrighty
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14th Jan 06 at 17:37   View User's Profile U2U Member Reply With Quote
you have all other performance exaust bar the manifold rob? if so id go for manifold
RobHayes
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14th Jan 06 at 17:38   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Rob B
I thought that too, it looks like proper forced induction , its dblias aswell so probably built for use with my inlet..

this manifold looks tasty..
http://cgi.ebay.co.uk/Vauxhall-Corsa-B-Tigra-1-4-1-6-16v-Exhaust-Manifold_W0QQitemZ8028883583QQcategoryZ72205QQrdZ1QQcmdZViewItem


u f*cking dare!!!

Rob B
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14th Jan 06 at 17:38   View User's Profile U2U Member Reply With Quote
i was more intrested in the gains i would get ... as after this im going to concentrate on the exterior.
cash_2_my_corsa
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14th Jan 06 at 17:42   View User's Profile U2U Member Reply With Quote
u will find that fitting a manifold will be the best mod u can do as std 1s r restricted.ask any rolling road garage.

my m8s 2.0xe made 160bhp from a 4 branch+system

mine makes 165bhp + thats with cams+gas flowed big valve head john nobles set up+said if i fit a 4 branch i will make 10bhp more
Rob B
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14th Jan 06 at 17:43   View User's Profile U2U Member Reply With Quote
right thanks for the info mate
Chris F
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Registered: 26th Dec 05
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14th Jan 06 at 17:51   View Garage View User's Profile U2U Member Reply With Quote
manifold if it was me..4-1 one!!
Dave A
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14th Jan 06 at 17:52   View User's Profile U2U Member Reply With Quote
4-2-1 is the way to go. 4-1 will lose you mid range torque
vibrio
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14th Jan 06 at 17:54   View User's Profile U2U Member Reply With Quote
get the 4-2-1 an the inlet, get it mapped and raise limit uped too
Rob B
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14th Jan 06 at 17:55   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by vibrio
get the 4-2-1 an the inlet, get it mapped and raise limit uped too


All ready got the Dblias Inlet... 4-2-1 help increase low/mid range torque then ?
Fad
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Registered: 1st Feb 01
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14th Jan 06 at 17:56   View User's Profile U2U Member Reply With Quote
Need a set of 264 cams and a ported head
Rob B
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14th Jan 06 at 17:57   View User's Profile U2U Member Reply With Quote
Im not made of money
Fad
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14th Jan 06 at 18:02   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Rob B
Im not made of money


Get a set of 1.6 cams and get them re profiled lot cheaper. Or buy a second hand head and just take it in to be ported and flowed and get them to fit the cams in then just fit it all in an afternoon so your cars not off the road at any point?

Seriously these cams will make a lot of difference in the way the car drives and picks up
Rob B
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14th Jan 06 at 18:03   View User's Profile U2U Member Reply With Quote
Ok cool ill have a think about it, my mate reckons it had new cams when it was rebuilt cause there are little circles on it if that makes sense and on his x16xe its all smooth.
Dave A
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14th Jan 06 at 18:05   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Fad


Seriously these cams will make a lot of difference in the way the car drives and picks up



only if you fit verier pulleys and get it mapped tho.

[Edited on 14-01-2006 by corsa808]
Stu_22
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15th Jan 06 at 01:10   View User's Profile U2U Member Reply With Quote
http://cgi.ebay.co.uk/Vauxhall-Corsa-Gsi-Astra-Janspeed-Exhaust-Manifold_W0QQitemZ8029774807QQcategoryZ38786QQtcZphotoQQrdZ1QQcmdZViewItem

Thats what you want
Rob B
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15th Jan 06 at 01:36   View User's Profile U2U Member Reply With Quote
Rusty and painted red No thanks
Butler
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15th Jan 06 at 02:00   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by cash_2_my_corsa
u will find that fitting a manifold will be the best mod u can do as std 1s r restricted.ask any rolling road garage.

my m8s 2.0xe made 160bhp from a 4 branch+system

mine makes 165bhp + thats with cams+gas flowed big valve head john nobles set up+said if i fit a 4 branch i will make 10bhp more

I thought the inlet manifold was the restricting factor on x16s? I suggest a 4-2-1 rob, and saved up and get some head work done.
Paul_J
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15th Jan 06 at 02:58   View User's Profile U2U Member Reply With Quote
4-1 will rob a bit of mid range torque - but shift it higher up the rpm range...

so you'd make more power but at 7500+ (stupid rpm) too peaky too.

4-2-1 however, will improve mid range and still give reasonable gains at top end power.

I'm getting a 4-2-1 for mine next
Rob B
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15th Jan 06 at 11:13   View User's Profile U2U Member Reply With Quote
Cheers Paul, and everyone think thats pretty much explained the difference for me, looks like a 4-2-1 it is and then that DBlias Flowtech cause it looks funky
Nick A
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15th Jan 06 at 11:34   View User's Profile U2U Member Reply With Quote
rob - going back to the top of your threas reagarding the Dblias Flowtech forced induction.

obvioulsy this is proven stuff that will work its full potential with all the other dblias parts. But will this improve the cars performance on its own?

for a 1.6 sport btw
Dave A
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15th Jan 06 at 11:40   View User's Profile U2U Member Reply With Quote
a 4-2-1 manifold only gained 2 bhp on mine. its a bit poinltess without headwork in my opinion. the ports on the x16xe are very narrow at the throats, this is where your biggest 'mechanical' restriction is at the moment. sbd even claim that the standard manifold is quite good. dont expect to fit it and notice a difference.

personally i would spend the money on a re-map. you will actually 'feel' a difference in the car and it will be running a lot better. also you would have the benefits of a raised rev limit so you can make the most out of the dbilas. it will also run a lot more economicaly.

have you got arp rod bolts or sbd rollers yet?

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