[fcperformance]

sleeper7, on Jun 9 2003, 10:57 AM, said:

Judge Ito
That is a interesting comment you made about tunning a 6 port vs a 4 port motor. I have been boosting a 86 n/a motor for the last 9 months with a T3 60-1 at 19-21 psi with good resutls I feel. 11.61et at 124.89mph with 1.89 60 foot. 400rwhp. car weighs 2720lbs. For the last month I have since changed my set up to a T4 T66 .96a/r p-trim, 86 turboII motor with large street ports and small bridge on the the secoundaries. 23psi. This set up seems slower and less responsive. Yes the higher rpm range is nice but the trottle response is not the same. My ET times seem to be the same but my mph is down a few.12.01et at 123mph with a 2.05 60 foot. No I did not clearance everything inside, did use the atkins two peice seals. Shifting at 7500rpm's. A/F ratio is a little richer, egt temps are 50-100f deg lower. Timing, air temp and water temp are the same. Any advise would be thankful. sorry to ask questions on some elses post.
chuck

was the old set up ported

[homebrewed]

I know that combining the secondaries and aux ports is a bad idea for street engines, but I'm building an engine that will only be used in autocross. I am making my own manifold w/ Hayabusa ITB's so the whole system will have pretty high flow. I want my redline to be somewhere around 8500 so I want my peak to be around 8000. Since I can't keep the 5 & 6th port actuators working anyway, would I benefit from hogging out the secondary and aux ports into one big port? I don't see the point of keeping them divided if my runner from the manifold is undivided. Thanks.

Steven

[Judge Ito]

diabolical1, on Jun 20 2005, 03:02 AM, said:

2 years down the road ...

any results on those 6-port streetports?

5 years later, yes have some 6 port templates.. :wacko: