the many more 4AGZE questions topic

[oldeskewltoy]

ditn Wrote:since i have alot of questions(again),i hope to collect them in this topic

engine
I want to do the same like hks did with there supercharger kit for the 4AGE instead of pushing the boost up with other pulleys and abv mod,...
i want to make the cr a bit higher and maintain all oem parts.
Now i have 8,9 , how high could i go safely 9,5?

Send the head to me...(or buy one from me...) [email protected]

I'll do the following....

1) Deshrouding the combustion chambers will remove most of the sources for pre-ignition(ping). This will allow you to safely run added compression


With you already having determined the piston(8.9 to 1), you have a choice as to other methods of boosting compression....

2a) having the heads surface machined(shrink the combustion chamber), 2b) have the blocks surface machined(smaller "deck") 2c) use a thinner head gasket 2d) a combination of a,b,and c (see photo below)



The easiest method would be for me to supply you with a head with 33cc chambers*, and for you to have the blocks surface machined for a .010"(.25mm) deck, then use the OEM gasket.

* you will be REQUIRED to use correctly set adjustable timing pulleys. This is because the distance between the camshafts and the crankshaft is shrinking(head cut and block cut) and because the gap between the cams and crank has "shrunk"... you need to adjust the camshafts to compensate.

3) In addition I will also re-taper the exhaust port to improve flow out of the head.


deshrouding



Chamber volume difference



exhaust port re-taper and polish