Hi guys. I wanted to share my pics of the 1grfe. We've torn down the longblock so we can build the heads with a heavy porting, more aggressive cams, 1mm oversized exhaust valves, and stiffer valve springs.
Here are the valves, stock is 36.5mm (massive) and 29mm exhaust. We plan on upgrading the exhaust to 30mm.
Something we did to fit larger valves in a similar toyota.
Onto the valve springs. We have a set of springs here that we're using with the more aggressive cams. The stiffer springs are 80lbs on the seat and 140lbs on the nose, and allow up to 10mm lift without coil bind
Is this for an X-runner? Either way, WOW! Keep us updated on the final horsepower and torque one completed. Oh and since you are changing the valve springs (i think) tell us what that thing can redline to. I wish I had the resources to do something like that.
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"If you don't like it, change it, if you can't change it, change the way you think about it."
Very interesting!!! Looking forward to more development on this motor build.
What vehicle will this go in?
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