2wd cos inlet manifold modifications
19-10-2008, 05:15 PM
#1
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2wd cos inlet manifold modifications
sure ive seen that for big(ger) power you need to do some mods to a std 2wd inlet.when is this a problem and what needs doing?any pics etc?rough prices?cheers
19-10-2008, 06:21 PM
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well basically nobody fucks about with the 2wd ones when they reach the limit, they spend Ł30 ish on a 4x4 one (which has a better elbow design) and throw the 2wd one away as they fit fine....
The only one i've seen lately with a modded elbow was a rs500 one which was modded to even out flow....
Basically change it for a 4x4 one when you need to as its not worth the bother messing with a 3wd one.
Cheers
Dan
The only one i've seen lately with a modded elbow was a rs500 one which was modded to even out flow....
Basically change it for a 4x4 one when you need to as its not worth the bother messing with a 3wd one.
Cheers
Dan
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19-10-2008, 07:32 PM
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ok fair enough, but why want to learn bout something thats not worth doing?
I'm sure any engineering shop would charge more than the cost of a 4x4 plenum to do any work.
Dan
I'm sure any engineering shop would charge more than the cost of a 4x4 plenum to do any work.
Dan
with this m8, im giving up now
19-10-2008, 07:55 PM
#14
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i merely wish to know,im not DEFINITELY gonna do it!
if we always just things like swap parts then we would never have tuned a single cosworth!we would just buy faster cars!its just something i want to look at as i have a 2wd inlet and may give it to someone to do rather than try find a decent 4wd inlet.its only a question.5 years ago people said it was pointless trying to get more power than a touring car 500bhp setup,it was impossible etc....now look at the scene,things move on,people look at different ways of doing things,its just what i get interested in,looking at things,figuring them out etc...
if we always just things like swap parts then we would never have tuned a single cosworth!we would just buy faster cars!its just something i want to look at as i have a 2wd inlet and may give it to someone to do rather than try find a decent 4wd inlet.its only a question.5 years ago people said it was pointless trying to get more power than a touring car 500bhp setup,it was impossible etc....now look at the scene,things move on,people look at different ways of doing things,its just what i get interested in,looking at things,figuring them out etc...
19-10-2008, 08:04 PM
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I'm not saying that it's not a good idea to learn how to modify inlets.....thats well worth the time and effort....Just not on a 2wd cossie inlet 
as its a no brainer tuning decision been made 1000 times over, all in favour of a different manifold.
Trust me mate...once you have fucked about with the 2wd and potentially fuck it up or cause inequal port flow you will wish you just swapped the cover
dan
as its a no brainer tuning decision been made 1000 times over, all in favour of a different manifold.Trust me mate...once you have fucked about with the 2wd and potentially fuck it up or cause inequal port flow you will wish you just swapped the cover
dan
19-10-2008, 09:33 PM
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he make it into a swedish style manifold for 175
then theres no limit to your power and helps the breathing 100000000%
you cant beat value like that
19-10-2008, 10:49 PM
#36
well im useing a t34.63 and had to dial more fuel in when i upgraded from a spaced 4x4 to a swedish then saying that i upgraded to the spaced 4x4 from a 2wd and had to dail fuel in so yes you will gain BUT get the fueling checked when changing inlets as it might get very lean at certain points on the map , and please dont just think oh ill turn the fpr up as it will more than likely richen the whole map up then itll just either bore wash or just loose power or both
19-10-2008, 10:54 PM
#40
Well i spoke to a very well respected tuner last week who told me that its not the elbow that is the restrictive part of a 2wd inlet manifold but the distance between the edge of the trumpets and the inner edge of the plenum cover.
I was told that a 10mm spacer would increase the flow by a lot although a 4x4 inlet is much better as standard.
I was told that a 10mm spacer would increase the flow by a lot although a 4x4 inlet is much better as standard.