Thread: Autech GTi -SR20DE UPDATES

The car:


The first engine upgrade to this car was swapping the original cylinder head for something a bit more special, along with some valvetrain goodies. Pictures from the head swap are below...

Removing the Autech SR20DE 53J Head














The Replacment Cylinder Head - This is a 53J head prepared and stamped by Janspeed. Its has some nice porting work done to it, and has modifications to improve oil flow around the head. Its also has a very heavy skim, netting a combustion chamber volume of 36cc (stock DE is 46.5cc).














Intake Manifold Clean up









Cylinder Head Refurb and Build up

nice work!

loving the janspeed head

did this used to be a 10:1 comp?

cause they dont look look like 10:1 pistons

Sorry to be off-topic but You can use a VE cover on a DE? Does that eliminate the need for the OEM catch can?

Very nice. What pistons are those? Ve ?

Im patiently watching this build, because ive already started working on my own DE build and i want to make my lowport head similar to yours. Thanks for inspiration.

they are Autech pistons basically flat top with notches, in the Autech motor they give 11.5:1 compression.

a VE rocker cover is the same as a Roller Rocker cover essentially and yes it allows you to remove the stock from catch can.

is the autech head skimmed then cause surely the compression would be the same if they are just flat tops??

yeah Autech head is skimmed

Looks good. Excited to see how much power you pick up from just the headswap...

yes boi