PLENUM

MANDALAY · 10-23-2009, 07:43 PM

Out of curiosity does anyone have a picture inside the plenum of the Black Top ?
Gee if anyone can explain why given the RED TOP and the BLACK TOP are vertually the same why they would hace different volumes of air ?

Celica RA45 · 10-23-2009, 08:27 PM

the auto black top is the same as the red top motor the manual has higher comp and bigger and lighter valves and also has a higher red line as well 7800rpm
the difference is most likely a extra cam control ,bigger butterfly as well and the different exhaust header
altezza1
its roughly the same size with ram tube runners like the red top

MANDALAY · 10-23-2009, 09:55 PM

Cool, how about the altezza plenum , thats totally different to both the RT and BT, But has vertyally the same engine ?
Its volume has to be different, does that have trumpets inside ?

Roman · 10-25-2009, 06:30 PM

Yep trumpets in it.

Straighter intake runners.

It has a resonance chamber built into it as well, presumably tuned to eliminate a dip in the powerband or something.

Made a thread about difference in measurements etc a while back

http://www.mr2.com/forums/beams/Toyo...omparison.html

10-23-2009, 07:43 PM	#1 (permalink)
MANDALAY Beams Owners Group Join Date: Feb 2007 Location: victoria AUSTRALIA Posts: 4,210 Thanks: 136 Thanked 112 Times in 107 Posts My Google Map iTrader Rating: (6/100% )	PLENUM Out of curiosity does anyone have a picture inside the plenum of the Black Top ? Gee if anyone can explain why given the RED TOP and the BLACK TOP are vertually the same why they would hace different volumes of air ?

10-23-2009, 08:27 PM	#2 (permalink)
Celica RA45 Beams Owners Group Join Date: Aug 2006 Location: sunny australia Posts: 628 Thanks: 0 Thanked 44 Times in 40 Posts My Google Map iTrader Rating: (0/0% )	the auto black top is the same as the red top motor the manual has higher comp and bigger and lighter valves and also has a higher red line as well 7800rpm the difference is most likely a extra cam control ,bigger butterfly as well and the different exhaust header altezza1 its roughly the same size with ram tube runners like the red top Last edited by Celica RA45; 10-24-2009 at 10:38 PM..

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10-23-2009, 09:55 PM	#3 (permalink)
MANDALAY Beams Owners Group Join Date: Feb 2007 Location: victoria AUSTRALIA Posts: 4,210 Thanks: 136 Thanked 112 Times in 107 Posts My Google Map iTrader Rating: (6/100% )	Cool, how about the altezza plenum , thats totally different to both the RT and BT, But has vertyally the same engine ? Its volume has to be different, does that have trumpets inside ?

10-25-2009, 06:30 PM	#4 (permalink)
Roman Beams OCD Support Group Join Date: Feb 2006 Location: Auckland, NZ Posts: 946 Thanks: 23 Thanked 56 Times in 36 Posts My Google Map iTrader Rating: (2/100% )	Yep trumpets in it. Straighter intake runners. It has a resonance chamber built into it as well, presumably tuned to eliminate a dip in the powerband or something. Made a thread about difference in measurements etc a while back http://www.mr2.com/forums/beams/Toyo...omparison.html