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Author 4.2.1 or 4.1???
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 09:58   View User's Profile U2U Member Reply With Quote
Wats a better manfold to put on my 1.6 16v sport
Jenko_Sport
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Registered: 25th May 06
Location: Stoke-on-Trent
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23rd Feb 11 at 10:05   View User's Profile U2U Member Reply With Quote
4-1 puts the power right at the top of the rev range and 4-2-1 gives you more mid to high rev range power.
shaunmods
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Registered: 12th Mar 07
Location: Glascote, Staffordshire
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23rd Feb 11 at 10:18   View Garage View User's Profile U2U Member Reply With Quote
4-2-1 gives more ground clearance as well.
philip2
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Registered: 1st Oct 06
Location: n.wales/chester
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23rd Feb 11 at 10:34   View User's Profile U2U Member Reply With Quote
4-2-1 you spend more time in mid range than full chat.
Toby
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Registered: 29th Nov 05
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23rd Feb 11 at 10:41   View Garage View User's Profile U2U Member Reply With Quote
Have you got an aftermarket inlet manifold?
Personally I would go 4 2 1 if you do to compensate the higher gains of an inlet however you may want a whack of power so a 4 1 maybe a better feeling for you
Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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23rd Feb 11 at 11:24   View User's Profile U2U Member Reply With Quote
Pointless if u haven't got an aftermarket inlet, or aren't planning to fit one.
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 11:44   View User's Profile U2U Member Reply With Quote
I have a dblis inlet piper cams daz tek uni chip rasied limted to 7500rpm cat back system powerflow sports cat lightend balanced fly wheel balanced crank ported polished gas flower head an also rasied the compression to 220 from the standerd 172 an i only need manfold now an didnt no weather a 4.1 or 4.2.1 would b best
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 11:46   View User's Profile U2U Member Reply With Quote
Will b puttin up a project thred when its finished
Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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23rd Feb 11 at 11:55   View User's Profile U2U Member Reply With Quote
Don't understand the compression? U mean you've raised the compression ratio? I'd for a 4-1 personally, make the most out of the raised rev limit
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 12:37   View User's Profile U2U Member Reply With Quote
Thats wat i said with out sayin ratio ha ha. U never see 4,2,1 there always 4.1 cheers ever1
nathy_87
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Registered: 14th Aug 08
Location: West Mids. Drives: Škoda Fabia VRS 5J
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23rd Feb 11 at 12:47   View User's Profile U2U Member Reply With Quote
If you use the friggin search then there was a thread about this last week.
shaunmods
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Registered: 12th Mar 07
Location: Glascote, Staffordshire
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23rd Feb 11 at 12:48   View Garage View User's Profile U2U Member Reply With Quote
Hmm personally I'd go with a 4-2-1 if you have an aftermarket inlet. Its going to be really flat lower down the revs otherwise as all the power is going to be from 5k onwards at least.

Plus even if your car is only slightly lowered your going to constantly scrape a 4-1 manifold off the floor as they hang very low down

[Edited on 23-02-2011 by shaunmods]
Chadicles
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Registered: 8th Jun 09
Location: Westbury, Wiltshire
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23rd Feb 11 at 12:54   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by shaunmods
4-2-1 gives more ground clearance as well.


i found this out the hard way!
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
User status: Offline
23rd Feb 11 at 13:36   View User's Profile U2U Member Reply With Quote
Ok i will search for a 4.2.1 i think any1 no were i can get 1 for a 1.6 16v sport
shaunmods
Premium Member

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Registered: 12th Mar 07
Location: Glascote, Staffordshire
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23rd Feb 11 at 13:41   View Garage View User's Profile U2U Member Reply With Quote
http://www.larkspeed.com/index.pl?a=i&p=JSEM466&part=Vauxhall-Corsa-B-Janspeed-Exhaust-Manifold

The photo is a bit decieving as its actually a mild steel manifold. Loads on here rate them though
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 13:43   View User's Profile U2U Member Reply With Quote
Cheers mate
Sport_1
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Registered: 2nd Feb 10
Location: Ellesmere port cheshire
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23rd Feb 11 at 13:54   View User's Profile U2U Member Reply With Quote
That aite has everything haha

 
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