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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
27th Feb, 2006 at 01:40:22pm
On 26/02/2006 18:12:47 pot_dan said:
i have one similar to this. MBC cracks at the desired pressure i beleive and jimmy used one on his mini and we dident like it would hold 4 psi untill 9psi was available and then bang, all at once full boost. the bleed valve was much nicer in both our opinions. tho i tried the MBC and the bleed valve on my nova and oculdent notice a difference for some strange reason :S Dan The above was from the for sale section. I don't understand this, dosen't the MBC stop the pressure exceeding 9psi (in this case) rather than giving you it when available? Also, not exactly sure how the MBC works. Because if you set it to (say) 15psi on a 10psi actuator, then you'll have afully closed wastegate untill 15psi, then a 10psi actuator will suddenly see 15psi. This will surely open the wastegate too much reducing boost pressure below 15psi quite quickly. This will result in the MBC closing allowing the boost to rise again. Full boost would be really wobbly with eth MBC chattering away like mad. Or have I got it wrong and the MBC is controlled via a bleed valve adjustement? Wil Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 4559 Posts Member #: 786 Post Whore Bermingum |
27th Feb, 2006 at 08:08:29pm
Hi,
Edited by Bat on 27th Feb, 2006. VEMs Authorised Installer / Re-seller. K head kits now available!
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 928 Posts Member #: 326 Post Whore bradford, west yorks |
27th Feb, 2006 at 08:47:06pm
it could well have been on the wrong way round, i know jimmy was new to turbos and things when he put it on the mini, so its posible but it did still set the boost but it gave it all in one big hit. the beled valve was much more progresive. but as i said i used the MBC on my nova and i couldent tell the difference between the MBC and bleed valve while driving that and was running over 20psi.
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4559 Posts Member #: 786 Post Whore Bermingum |
27th Feb, 2006 at 08:52:57pm
Hi,
Edited by Bat on 27th Feb, 2006. VEMs Authorised Installer / Re-seller. K head kits now available!
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 3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
2nd Mar, 2006 at 01:58:56pm
On 27/02/2006 20:47:06 pot_dan said:
it could well have been on the wrong way round, i know jimmy was new to turbos and things when he put it on the mini, so its posible but it did still set the boost but it gave it all in one big hit. the beled valve was much more progresive. but as i said i used the MBC on my nova and i couldent tell the difference between the MBC and bleed valve while driving that and was running over 20psi. Dan The mbc was connected the right way round lol, i may have been new to turbos but i wouldnt guess at stuff like that... There was a large arrow on the bottom of it anyway and good instructions so you couldnt get it wrong lol I had my engine in bits many many times too and would have noticed it on the wrong way one way to test it anyway, when this engines finished ill try it out on that both ways round :) Edited by jamesfawcett on 2nd Mar, 2006. Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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928 Posts Member #: 326 Post Whore bradford, west yorks |
2nd Mar, 2006 at 07:44:45pm
im not sujesting anything jimmy i had to think twice about wich way the arrow should go when iput it on my nova and if it did what it sounds liek it did on the other cars omg i blagged my own head. sorry cant continue. lol
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