8.5:1 compression in an RB25

[SLY33]

Anyone drop their comp. ratio to 8.5:1 in order to run more boost?

eg like JMS's red 33, using a thicker head gasket.

How does it drive off boost?

Does it significantly effect drivability at low speeds and thru traffic etc??

Cheers

SLY

[Merli]

I have a 1.6mm HKS Stopper-Type Metal Head Gasket sitting next to me, ready to go on when I put the forged internals into my RB25...

It's supposed to drop compression down to 8.6:1...

I too am interested in how it'll affect off-bost performance... Especially since I'm planning on changing camshafts, which will mean I have to lose NVCS (Variable Intake Cam) which will result in even more bottom end loss

[Sim88]

stop whinging bro ( although losing the nvcs might be worth crying over)

my compression is around 8.4 and bottom end power is still good

drives nicely and driving around off boost is still quite nice and bearable.

merli, systems are go for your bits