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headers already sent by (output started at [ROOT]/includes/functions.php:3815) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4670: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3815) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4671: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3815) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4672: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3815) Streetracing.co.za • View topic - Which cylinder head to use (Small port VS 20v Blacktop)
Post subject: Which cylinder head to use (Small port VS 20v Blacktop)
Posted: Sun Nov 08, 2015 8:47 pm
0.5 bar boost
Joined: Sun Mar 25, 2012 8:42 pm Posts: 820 Location: Kimberley
Hi guys I have two heads 1 smallport which is ported and flowed with 280deg cams and a 20v blacktop head. I wana know which one must I use for my 4agte build? I have heard some people say the blacktop head can't take any boost. I'm not sure if I must use the smallport head because of the cams being 280deg.
Oh ja I must anyway build a intake because of space issues.
People who say the blacktop head can't take boost is blowing smoke out their asses. There's absolutely no logical reason why it would not be able to take boost and in fact lots of guys over seas are extracting incredible amounts of power from them.
_________________ My garage is so leeg soos 'n hoer se hart...
Joined: Fri Apr 11, 2008 8:08 am Posts: 3353 Location: Cape Town
Boksie, I think he might be referring to the valve spring in the 20v head that need to be replaced if you wanna run higher levels of boost
_________________ '89 RSi Twincam 16v - 4A-GTE Project - The Toy is a Toy! '06 Honda Accord 2.4 Type S - this is my Slow Family car '07 Citi .:R - The Daily - EX - No Comment
Joined: Fri Apr 11, 2008 8:08 am Posts: 3353 Location: Cape Town
_________________ '89 RSi Twincam 16v - 4A-GTE Project - The Toy is a Toy! '06 Honda Accord 2.4 Type S - this is my Slow Family car '07 Citi .:R - The Daily - EX - No Comment
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Thanks for the info Boksie