Interesting development 4 valve heads

OLD FART · Post by **OLD FART** » Fri Aug 31, 2012 8:07 am

http://www.motortecmagazine.net/article.asp?AID=1&AP=1

popup · Post by **popup** » Sat Sep 01, 2012 2:33 am

Interesting, but guess its only worth it if you are trying to wring out as much HP as possible. For most people turning up the boost is probably easier :P

OLD FART · Post by **OLD FART** » Sat Sep 01, 2012 5:01 am

Agreed but for me it was all about improving the efficiency of the 4 v heads .If one reads the article they recessed the seat of one valve and had different inlet valves and ported it accordingly along with the exhaust side to get a better flowing head to produce more power at the same boost.
On my racing budget I will just turn up the boost another 5 psi

Post by **Alspos** » Sat Sep 01, 2012 10:48 am

I think the point was not for outright power but to improve the driveability of small capacity 4 cylinder engines as Rad said. The fact that your race engine will also benefit from the changes is a byproduct.

thrash · Post by **thrash** » Sat Sep 01, 2012 3:40 pm

yeah there's not enough focus on efficiency in the aftermarket.. people are too busy chasing power and being cheap about it lol

OLD FART · Post by **OLD FART** » Sat Sep 01, 2012 4:55 pm

thrash wrote:yeah there's not enough focus on efficiency in the aftermarket.. people are too busy chasing power and being cheap about it lol

You calling me cheap :glare: :glare:

thrash · Post by **thrash** » Sat Sep 01, 2012 6:55 pm

rofl

no, i'm saying that your priority is power and reliability, not efficiency

OLD FART · Post by **OLD FART** » Sun Sep 02, 2012 6:13 am

thrash wrote:rofl

no, i'm saying that your priority is power and reliability, not efficiency

Thrash sorry mate It's all done in good fun. I just can't help myself at times.Was just winding you up :D

thrash · Post by **thrash** » Sun Sep 02, 2012 9:13 am

lol, no apologies needed, i know you were just having a go

popup · Post by **popup** » Mon Sep 03, 2012 10:07 pm

Must be great to have access and time to do all that sort of stuff.

I always hoped variable compression ratio engines would get developed. I think the closet/best solution was one done by Saab.

coop1er · Post by **coop1er** » Tue Sep 04, 2012 6:13 pm

Needs an independent review; The author is writing about his own patent,
on his own website.

I suspect there isn't much gain over conventional setups.

Austarion

Interesting development 4 valve heads

Interesting development 4 valve heads

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