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 399 Posts Member #: 793 Senior Member Milton Keynes |
7th Feb, 2014 at 12:42:53pm
A friend has a kit car with a tweeked turbo set up, he's looking into managment and injection (single throttle body). Now is it still necessary to fit a plenum, or is this obsolute once you go to an injection throttle body. http://i28.photobucket.com/albums/c248/spe...er1/mini007.jpg
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 3673 Posts Member #: 9300 Post Whore Quarry Bonk |
7th Feb, 2014 at 01:08:11pm
Not needed for injection as the fuel is always under pump pressure and not float bowl fed On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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 207 Posts Member #: 9045 Senior Member Wolverhampton, West Midlands |
7th Feb, 2014 at 02:52:10pm
. Edited by Pauly on 7th Feb, 2014. |
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 834 Posts Member #: 2017 Post Whore Warwick. |
7th Feb, 2014 at 06:13:24pm
sure about that? theres many a car out there which uses a plenum as well as injection. The plenum acts more like an air reserviour to hold the air before its drawn into the cylinder. There is a rule of thumb the Plenum should be roughly 1.5X the capacity of 1 cylinder, so your drawing from this rather than waiting for your turbo to supply the neccesary air. It also dampens out any pulses in the air caused by the turbo
On 7th Feb, 2014 Carlzilla said:
Not needed for injection as the fuel is always under pump pressure and not float bowl fed David. |
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 9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
8th Feb, 2014 at 12:09:40am
On 7th Feb, 2014 mini93 said:
sure about that? theres many a car out there which uses a plenum as well as injection. The plenum acts more like an air reserviour to hold the air before its drawn into the cylinder. There is a rule of thumb the Plenum should be roughly 1.5X the capacity of 1 cylinder, so your drawing from this rather than waiting for your turbo to supply the neccesary air. It also dampens out any pulses in the air caused by the turbo On 7th Feb, 2014 Carlzilla said: Not needed for injection as the fuel is always under pump pressure and not float bowl fed mini 93 is correct, however the mini plenum is literally just a restriction in air flow to ensure the fpr gets a slightly higher pressure signal than what is available to the carb if throttle body injection ( such as the specialist components kit ) is used the metro plenum is not needed a better designed inlet with correctly sized plenum would be beneficial no doubt Edited by Brett on 8th Feb, 2014. Yes i moved to the darkside |
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3673 Posts Member #: 9300 Post Whore Quarry Bonk |
8th Feb, 2014 at 11:07:15am
I think he was on about the metro plenum, which is why i replied no to avoid confusion On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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