cutting heads down .030

[2ooosrx]

I have heard of many people cutting down there heads on there srx .030 for more compression and power. I am wondering how much more compression would that add to my motor if I am a 130. Also if I cut my heads this much would I have to run with premium fuel. Thanks

 

[Turk]

The squish is allready very tight on the 00-02 700 SRX. You can cut 10-15 thou on the 98-99 but for trail riding you will detonate unless you run 100 octane cutting off 30 thou.

 

[SHAMARKEN]

don't do it if you buy gas from different places.Did the heads on my srx & twice I blew up due to bad gas,never had that problem until I cut my heads.get a second set if you want to for racing & a stock set for trail.......my02 cent

 

[MrSled]

if you take .030 off the surface its best to take .020 out of the squish

 

[x2ryder]

anywhere upto 160 psi you should be safe with 91-93 octane

 

[x2ryder]

I ran 160 on my 1004 t-cat and was fine. with 91-93 octane

 

[BETHEVIPER]

also depends on the angle of the compression band and squish band. i think where you see people cutting that much off stock head on a stock motor is when they lift the cylinders with base gaskets to raise the ports.