Turbo head gaskets

[Feetsbig]

I am going to use 3 Yamaha gaskets,should I use a sealer between them,or something like Hi-Tack spray,or nothing?

 

[Blue shadow]

By using the three stock head gaskets with out sealer it will be fine.Did not have any problems with mine.

 

[sledheadgeorge]

By using the three stock head gaskets with out sealer it will be fine.Did not have any problems with mine.

No problems here neither.

 

[peteracing]

You should re-torque head after 500 miles . Studs stretch and gasketsss
compress with heat cycles...

 

[RED]

I have 3 in mine, did 3 other sleds the same way, so far no problems. Have couple of buddies with that did this 3 years ago with no issues yet on the headgasket, seem like Yamaha gaskets are better than the aftermarket ones.

 

[Feetsbig]

Thanks guys,dry it will be.

 

[Jack_Shaft]

Any particular reason why you guys opted to stack gaskets 3 high as opposed to using the machined shim?

 

[Skydog]

I think the machined shims are more prone to leak. What kind of gains do you realy get from lowering the compression? What kind of boost can you run on pump gas then? With three gaskets? 12-13 psi??

Thank you Skydog

 

[Travis Moore]

You guys do realize that you are going to create more 'lag' with the lowered compression ratio, dont you? Personally i dont think that one of these engines running 12lbs of boost on pump gas with 3 head gaskets would outrun one running 8 or 9 pounds with one headgasket...IMO the list goes on and of for a stock motor to just keep one gasket and wait for rebuild time to lower the C/R the correct way.

 

[Turbo Tim]

Travis , have you ever been on one with stacked gaskets at 14 p.s.i.?..................They Crank !

 

[Travis Moore]

Travis , have you ever been on one with stacked gaskets at 14 p.s.i.?..................They Crank !

I'd rather ride one at 14psi with stock stuff and the proper octane fuel

 

[Turbo Tim]

Travis , have you ever been on one with stacked gaskets at 14 p.s.i.?..................They Crank !

I'd rather ride one at 14psi with stock stuff and the proper octane fuel

Who says I don't have proper octane fuel.?

 

[Jonny Rocket]

Last year I ran my sled w/about 40% 116 octane and 60% 92 w/stock motor at 10 #'s boost. I was racing against some other turboed sleds that had low comp pistons. They were running 10PSI also. We raced many times and they could take me off the line and pull me for the rest of the time, so from what I have seen, having lower compression does not affect the lag.

 

[Skydog]

Jonny, i see you are from Spokane! I am in Oak Harbor right now, just got done doing a Turnaround at Shell. Will be driveing home this Sat.!! To ILL.

Skydog

 

[snowy1]

I ran 14-15lbs with the gt25 on stock motor with strait 110 until I put the bigger turbo on then I did three head gaskets at 18-20 lbs. I put pistons in this year so I will be running 18lbs with 50/50 is the plan.