No idea tbh, how do i tell the diff? I just thought i'd be a 2.0 one on it
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| Author: | georob [ Mon Oct 23, 2006 5:03 pm ] |
| Post subject: | Inlet Manifold |
Whats the diff with putting a 1.8 inlet on a 2.0 as i've noticed a few people have does this. Is there any gains from doing this? Cheers Geo |
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| Author: | onslack [ Mon Oct 23, 2006 5:05 pm ] |
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what inlet are you using for your 2.0 Si? i am using an RS1800 inlet its ment to flow alot better than if your were using the 1.6 Si inlet and the ports are bigger on the 1.8 inlet and slightly bigger still on the RS1800 inlet |
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| Author: | georob [ Mon Oct 23, 2006 5:06 pm ] |
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No idea tbh, how do i tell the diff? I just thought i'd be a 2.0 one on it
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| Author: | onslack [ Mon Oct 23, 2006 5:10 pm ] |
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nope the 2.0 inlet fowls the bulk head taken from the guide in the guide section: http://www.fiesta-si.com/forum/viewtopi ... 22&start=0 Inlet Manifold The Mondeo inlet manifold curves back down and basically just won?t fit in the Fiesta engine bay. The solution is to use the Fiesta inlet manifold so it will all fit in. One issue here is that the 1.6 inlet manifold is smaller than the Mondeo one and also the manifold ports are smaller than the 2.0 inlet ports which results in a step change out where the manifold meets the head. Some others who have done this conversion have smoothed out the transition by filing out the inlet manifold, however you are still stuck with the overall smaller manifold bore. I spoke to Dave Baker at Puma Racing who reckoned that the effort of smoothing out this transition was just not worth it as overall flow will be dictated by the manifold size and the step up where it meets the head will not have a marked effect on performance. What is not known is what effect the smaller manfold size has on performance but unless you felt like fabricating a custom manifold then there is really no choice in the matter. I reckoned that this manifold will happily flow 130BHP on the RS1800 engine so the effect may not be massive, unless I get the car on a rolling road I?ll probably never know. If anyone wants to offer me a free power run on a local rolling road I wouldn?t turn them down. take a look in here aswell i have a pic's of the Letter printer on the RS1800 inlet http://www.fiesta-si.com/forum/viewtopi ... 81&start=0 *i wish jd was here  , this is his area  *
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| Author: | georob [ Mon Oct 23, 2006 5:20 pm ] |
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Decent, thanks man, will have a squiz and see what one it is!! |
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| Author: | onslack [ Mon Oct 23, 2006 5:22 pm ] |
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no a problem, just hope i gave you the right answer to your question , not to good at this technical stuff even tho i did my conversion with a friend
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| Author: | georob [ Mon Oct 23, 2006 5:24 pm ] |
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| Author: | georob [ Mon Oct 23, 2006 5:27 pm ] |
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| Author: | onslack [ Mon Oct 23, 2006 5:32 pm ] |
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| Author: | james_rs [ Mon Oct 23, 2006 9:57 pm ] |
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My 1.6 has nothing on it. Current has S.O on it. Not got a clue what its from. I think its a 1.8 2i. |
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| Author: | jdfiesta [ Mon Oct 23, 2006 10:37 pm ] |
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I have a picture somewhere of the differences between RS1800 inlet and the 1.6 Si inlet JJ |
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| Author: | onslack [ Tue Oct 24, 2006 10:58 am ] |
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found them for you jd 
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| Author: | georob [ Tue Oct 24, 2006 12:06 pm ] |
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Thanx guys Do you notice a diff when the HO manifold or is it neglible? |
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| Author: | onslack [ Tue Oct 24, 2006 12:20 pm ] |
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| Author: | Mattyboy Esq [ Tue Oct 24, 2006 12:46 pm ] |
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| Author: | onslack [ Tue Oct 24, 2006 1:03 pm ] |
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| Author: | Mattyboy Esq [ Tue Oct 24, 2006 1:05 pm ] |
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| Author: | onslack [ Tue Oct 24, 2006 1:07 pm ] |
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