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| Another manifold/exhaust tuning question; 16 valve manifold | |
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| Tweet Topic Started: Fri Aug 19, 2011 10:51 am (1,052 Views) | |
| Threepoint | Fri Aug 19, 2011 10:51 am Post #1 |
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Part of things
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I have studied previous topics, however I don`t seem to be able to find a definitive answer to the question: will a 8 valve 2.0 ltr benefit from a 16 valve manifold? I can see from previous topics that some have done it, others state that the hole diameter is different etc and although the 16 valve manifold can be adapted to fit, will it make any difference? I have taken the main cat off and I am trying to find a down pipe without pre cats at the moment, and would like to update the manifold as well. I can get a 16 valve manifold for £75, but am I wasting my money and time trying to adapt it and fit it? Many thanks in advance for your input. |
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| Neil | Fri Aug 19, 2011 11:04 am Post #2 |
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Newbie
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Not sure anyone in the UK has ever tried it. Judging by the popularity of individual headers as an upgrade on other 2-litre 8v motors (I'm thinking Golfs, predominantly), you'd think it could help in the overall quest for more response or maybe even a bit more power? Designed to ease the flow of exhaust gas out of the cylinders, so in theory there should be a benefit of some sort. So few people tune the 2-litres, there are many unanswered questions. |
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| 85matt190 | Sat Aug 20, 2011 8:05 pm Post #3 |
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WINNING!
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with no other modifications, fitting a 16v manifold will give you a little mre top end power, but at the cost of low down grunt. its up to you... |
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| alogaparaloga | Sat Aug 20, 2011 8:46 pm Post #4 |
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crazy mind
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^+1. Plus... it is always advisable to retune an engine that has significantly altered manifold designs in order to avoid the risk of leaning the mixture too much |
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| Threepoint | Sat Aug 20, 2011 8:54 pm Post #5 |
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Part of things
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Thanks for your input, guys, sounds like I`ll stick to just de-catting it. |
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| Neil | Sun Aug 21, 2011 10:03 am Post #6 |
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Newbie
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Wouldn't the KE-Jet system compensate automatically, taking info from the Lambda sensor? |
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| mazza | Sun Aug 21, 2011 10:33 am Post #7 |
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More than part of things
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Hi Supersprint, Sebring and Brabus made LHD manifolds for the 8v Units. So! like Neil said, its more of LHD thing. In terms of gains, IMO you will get gains both at low and high rpm...but high rpm will be your most rewarding. here's a video of a 2.0 with a full 16v exhaust inc manifold, sounds pretty good. http://www.myvideo.de/watch/5644934/Mercedes_Benz_W201_190E_2_0_mit_16V_Auspuffanlage_inkl_Faecherkruemmer mazza |
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| Will | Sun Aug 21, 2011 10:47 am Post #8 |
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Highly Addicted
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Most 190Es don't have lambda sensors - but otherise you're thinking along the right lines
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| Neil | Sun Aug 21, 2011 11:10 am Post #9 |
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Newbie
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Excellent! It's only taken me 7 years to work out what all those black plastic bits do ![]() I notice that many of the K-Jet Golf boys (after visiting Ashley Exhausts for a 4-2-1 system) have a Lambda plumbed in
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| Threepoint | Sun Aug 21, 2011 9:14 pm Post #10 |
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Part of things
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Hhhhmmmm, maybe not so straight forward as it would seem. Maybe for the cost of the manifold (£75) and the cost and time involved in adapting it it would be interesting doing it and post the result on here. Thankyou all. |
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| 85matt190 | Mon Aug 22, 2011 6:31 am Post #11 |
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WINNING!
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Even models equipped with a lambda sensor, use a narrowband sensor mainly only for idle control, but even then not much. Some cars had factoryy installed sensors wired to nothing. Or you open up some ECUs, and the sensor wires go to empty pins occasionally. CIS can do very little to compensate for modifications, which is why EFI is so popular |
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| mazza | Tue Aug 23, 2011 2:14 pm Post #12 |
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More than part of things
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Hi if you are having a 4-2-1 system made for your 190, make sure you add a lambda boss too...even if you dont have a lambda KE J. Always useful for diagnostics etc. is this why you were asking about the RHD/LHD differences??? mazza |
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| Threepoint | Tue Aug 23, 2011 8:55 pm Post #13 |
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Part of things
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The system I have is stainless from where the main cat used to be. It was made by Vortex http://www.vortex-performance-exhausts.co.uk/, and with the recent post called `Give your engine wings`which was about removing the pre cats in the down pipe, I got hold of a downpipe without cats, it should arrive sometime this week. A natural and reasonably cheap next move would be the manifold, but it seems to give an abundance of opinions. Would a rolling road tune up not be the way foreward after fitting manifold? I am not looking to gain a great amount and not looking to make any other engine changes. Otherwise it would be easier and cheaper to sell 2.0ltr and buy 2.3. Breathing properly is important for any engine, and it seems like a relatively cheap form of gaining a small improvement. However, I would rather have grunt than top end so it might be trial and error. |
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9:26 AM Jul 11