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Location:
Adelaide, SA
Registered:
October 2005
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Open Port for 20V Black Top
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Sun, 13 November 2005 09:50
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Hi, a mate of mine is very convinced in his theory that for a stock Black Top 20V 4AGE engine, you can remove the intake plenum and run with the 4-throttles with open-port configuration without having to tune it.
If that is not the case, how hard is to tune to get it runing perfectly?
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Location:
nelson, new zealand
Registered:
October 2004
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Re: Open Port for 20V Black Top
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Sun, 13 November 2005 11:14
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yes you can, its an easy and effective way of losing power.
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Location:
wollongong
Registered:
March 2004
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Re: Open Port for 20V Black Top
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Sun, 13 November 2005 11:39
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According to a g-tech:
AE82 blacktop 20v with full factory airbox = 15.2
AE82 blacktop 20v with open throttles = 15.7
You can feel the engine surging without the airbox, i don't know why but it's definitely slower, with open throttles on a stock ecu.
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Location:
Adelaide
Registered:
May 2003
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Re: Open Port for 20V Black Top
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Sun, 13 November 2005 12:08
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heatsoak
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Location:
Adelaide, SA
Registered:
October 2005
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Re: Open Port for 20V Black Top
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Sun, 13 November 2005 13:17
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Is it true to my understanding that, the response and power at the lower end range in the rpm will have to sacrifice for this setup but you can pull up to a higher limit in the rpm?
if I get a full stand-alone ecu, is it going to solve all the problems that might occur?
please help me clarify this, thanks a lot guys
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 01:14
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with the right tuning (haltech/ autronic/ motec) and a good cold air feed with alum shielding (to protect against heatsoak) :
response and torque will be greater over the entirety of the rev range
power will be greater over the entirety of the powerband
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Location:
nelson, new zealand
Registered:
October 2004
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 01:15
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this is assuming you are keeping the trumpets.....
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Location:
nelson, new zealand
Registered:
October 2004
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 01:40
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yes, or those!
i assume they have been dyno tested? just making pretty trumpets doesnt mean they'll be any good....
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Registered:
January 2004
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 02:09
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years ago on an engine dyno we found 11bhp at the top end and no loss anywhere with the right length ram tubes on a 20v.
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 02:15
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what was the length 170bhp?
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: Open Port for 20V Black Top
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Mon, 14 November 2005 08:14
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| Mr Revhead wrote on Mon, 14 November 2005 12:40 |
yes, or those!
i assume they have been dyno tested? just making pretty trumpets doesnt mean they'll be any good....
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i believe so
techno toy make a lot of good quality tried and true stuff on their own 4age's!
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Location:
NSW
Registered:
January 2003
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Re: Open Port for 20V Black Top
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Mon, 21 November 2005 10:40
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What about if you added a bonnet scoop for some cold air to feed in would this help minimise heat soak.
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Location:
nelson, new zealand
Registered:
October 2004
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Re: Open Port for 20V Black Top
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Mon, 21 November 2005 20:31
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yes, how ever there is a substantial power loss involved in removing the surge tank.
however if using the correvt style trumpets it may be ok....
but i find it interesting that TRD, TOMS and other race teams all used surge tanks.....
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