Need help, head gasket mod 600 twin -98

[SamuelJackson]

Ok guys

I know when doing head gasket mod you remove some layer from gasket.

But what layer you have removed and how much thinner head gasket you are using.

Orginal gasket has 5 layers, 0.20 mm 0.19 mm 0.60mm0.19mm 0.20mm.

What i can remove, opinnions and experiences needed

And how much compresssion your modded engines have?

thanks

-sami-

 

[mmx600]

i used 2 layers on my 600 twin

 

[Snowbear]

i removed the 2 middle layers on mine and it seems good, no issues what so ever on it. My compression has not been measured but i do have lots more snap in the engine

 

[SamuelJackson]

i used 2 layers on my 600 twin

what 2 layers?

 

[SamuelJackson]

i removed the 2 middle layers on mine and it seems good, no issues what so ever on it. My compression has not been measured but i do have lots more snap in the engine

I suppose those 0.19 mm layers. Could measure compression for me?

-sami-

 

[mmx600]

i just used the 2 thin layers

 

[SamuelJackson]

I removed those 2 middle layers 0.19 mm each.

It gave about 1.0 bar more compression and its now 140-145 psi.

I can t remove middle 0.6mm thick layer because it has different water holes than any other layer.

piston wash looked ok

 

[sick srx]

will you have to rejet , run 93 octane fuel ? .

 

[SamuelJackson]

No rejet and I run always 98 oct fuel with 3% synthetic oil premix.

 

[sick srx]

the best pump gas around my area is 91 / 93 octane fuel, some of the bumpkin towns dont even have that. what would be fuel octane minmum requirements be for 140 -145 compression? my motor is .50 over would that also raise compression?

 

[sick srx]

does the 97 600 twin v max xtc have the same gasket as mentioned in thread

 

[ryan2001sx600r]

No rejet and I run always 98 oct fuel with 3% synthetic oil premix.

That actually makes you run leaner you know. Premixing oil with the gas.

 

[jasburrito]

90 to 120

I used 2 thin 1's comp from 90 to 120
runs better and freeze