| NITROUS OXIDE ( nos / n2o ) advice forum http://nitrous-advice.org/ |
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| disa manifold http://nitrous-advice.org/viewtopic.php?f=28&t=7574 |
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| Author: | teddybare [ Tue Sep 24, 2019 8:21 am ] |
| Post subject: | disa manifold |
hi alex or anyone thats reading  Looking at this thread viewtopic.php?f=28&t=7508 , i sold my mini and now have a e82 with the n52 NA engine it has a disa valve inlet manifold im pretty sure the same as the z4 (could be wrong) so my question do i have to go direct port or can i do the easier single crossfire throttle body pipe  cheers ted |
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| Author: | teddybare [ Tue Sep 24, 2019 12:26 pm ] |
| Post subject: | Re: disa manifold |
i just found this quote ... the DISA's main effect is on intake harmonics..which is only really present at low RPM. at high RPM, and with a turbo, the DISA's benefit is minimal to non-existent due to forced induction not really giving a damn about harmonics when it comes to intake runner design(hence why you then run an open plenum)..it at that point is all about air volume and velocity. so im hoping i can get away without direct port 
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| Author: | teddybare [ Wed Sep 25, 2019 1:24 pm ] |
| Post subject: | Re: disa manifold |
right in case anyone was wondering just spoken to trev and i can use throttle body set up  soooooo quiet here 
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| Author: | Turbobox [ Wed Sep 25, 2019 9:59 pm ] |
| Post subject: | Re: disa manifold |
I checked the forum yesterday and your post wasn't made yet lol. For a low dose, a single crossfire would do OK. Probably 75 progressive or so. Higher doses would need a pro series (3 pair pulsoid) or D-block setup. I'm working on my own I6 project using twin crossfires for a low dose up to 150 BHP and later on a Pro Series Triple Pair Pulsoid setup for a much bigger nitrous dose. |
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| Author: | teddybare [ Thu Sep 26, 2019 1:01 pm ] |
| Post subject: | Re: disa manifold |
im well happy i can do the simple set up.... 
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| Author: | Turbobox [ Thu Sep 26, 2019 7:24 pm ] |
| Post subject: | Re: disa manifold |
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| Author: | teddybare [ Thu Sep 26, 2019 7:59 pm ] |
| Post subject: | Re: disa manifold |
oh alex forgot to ask Back in my mini thread i got a 4an adapter for the fuel rail...do you think i will touch lucky that the n52 rail will be the same 
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| Author: | Turbobox [ Fri Sep 27, 2019 3:03 am ] |
| Post subject: | Re: disa manifold |
I haven’t the slightest idea about that. Im sure you can exchange it for the appropriate adapter if need be. |
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| Author: | teddybare [ Fri Sep 27, 2019 7:42 am ] |
| Post subject: | Re: disa manifold |
ok
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| Author: | teddybare [ Sun Oct 06, 2019 2:15 pm ] |
| Post subject: | Re: disa manifold |
i've made a start https://ibb.co/Z8mvnt1 https://ibb.co/P1Nb8tN https://ibb.co/vd9cx3v https://ibb.co/WkgftyB |
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| Author: | Turbobox [ Sun Oct 06, 2019 8:15 pm ] |
| Post subject: | Re: disa manifold |
Nice! The short pipe work is gonna have an instant response.
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| Author: | teddybare [ Mon Oct 07, 2019 8:17 am ] |
| Post subject: | Re: disa manifold |
shortest pipe i've ever made alex
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| Author: | Turbobox [ Mon Oct 07, 2019 8:09 pm ] |
| Post subject: | Re: disa manifold |
I looked and the manifold again and it may be an additional benefit to angle the crossfire about 45* - 65* to create the vortex and mix the N/F more effectively. Plus it will remove a lot of the momentum of the plume so that the mix is more likely to change direction when it gets to the back of the TB opening. The manifold is going to force the mix to change direction by 180* towards either side and then it has to travel upwards, so angling the crossfire is what I would do. More so, it will smooth out the pulses from the minimax further reducing the amount of engine stress below that of NA than the system already would! https://www.youtube.com/watch?v=RoJT8I6h6oE Skip to 3:45 Pay attention to the 45* angle test and you'll see where I'm getting at. |
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| Author: | Turbobox [ Mon Oct 07, 2019 8:26 pm ] |
| Post subject: | Re: disa manifold |
You'll be happy to know that if you wanted more than 75 bhp, there is the option to use a y-block and 2 crossfires in the plenum tubes (since they split evenly to feed 3 cyls at a time). This will give you the distribution and reduce the chances of fuel dropout for a higher nitrous dose! It's certainly much less expensive and less complex than a direct port. Attachment: disa spray.jpg [ 59.18 KiB | Viewed 61710 times ] |
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| Author: | teddybare [ Mon Oct 07, 2019 10:36 pm ] |
| Post subject: | Re: disa manifold |
many thanks for the insight alex ...
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| Author: | Turbobox [ Mon Oct 21, 2019 12:32 am ] |
| Post subject: | Re: disa manifold |
Did you get it done, yet? 
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| Author: | teddybare [ Tue Oct 22, 2019 8:35 pm ] |
| Post subject: | Re: disa manifold |
hi alex Sadly i was just about to do the electrics when the car developed a cas unit fault which stops the car from starting it came with 6 months warranty which was a bonus but it means bmw now have the car for repair already been warned a complete coding of the car will happen so goodbye to the remap i had done only a few weeks ago  will be in touch hopefully when i'm back on the road
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| Author: | Turbobox [ Tue Oct 22, 2019 8:58 pm ] |
| Post subject: | Re: disa manifold |
That's a shame for sure. Hopefully, it all get fixed. |
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| Author: | teddybare [ Sun Nov 03, 2019 6:34 pm ] |
| Post subject: | Re: disa manifold |
Hi alex Got my car back and is running well, just wired the bottle heater and will do the rest after another re-map its my first automatic car so i will make an assumption you have driven many , it's the step auto type fitted to many bmw's so my question is do i drive with nitrous as a normal MT car in manual mode it has paddles too or auto sport mode which holds the changes for longercheers |
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| Author: | Turbobox [ Tue Nov 05, 2019 2:08 am ] |
| Post subject: | Re: disa manifold |
I’ve driven plenty of autos, but not of the types with physical clutches. If the shift is not instantaneous, then it would be a good idea to cut nitrous off just before the shift with the window function. I’d do that with any factory auto regardless to take stress off during the shift. I worked racing auto can handle plenty of nitrous during the shift. |
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| Author: | teddybare [ Tue Nov 05, 2019 8:07 am ] |
| Post subject: | Re: disa manifold |
ok thanks for that...
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