Lowering Compression To Pump Gas HELP!

[tc14]

I have a 93 Mint Blaster with a 6 mil stroker on a set of racing jugs hitting 200PSI. I need to run half Race fuel and half Premium. I'm looking at adding a thick base gasket to raise the jugs and lower compression since I don't race and this blaster is UN-necessary powerful. What size thickness base gasket should I be running to attain PUMP gas compression? 1.00 maybe 1.25 or larger ?

 

[Scraggly]

i would leave the base alone and get new domes for the head. what head is it?

 

[ADDict]

I'm no expert but I would think a thicker base gasket would change port timing, squish and compression. Scraggles is right, you need larger domes.

 

[tc14]

I'm not to keen on changing the domes. I was told by multiple racers to add the thick gasket and it shouldn't change port timing a ton. Also not a huge concern since its heavily ported already and I don't race.

 

[Scraggly]

it will change port timing. it also may not matter, but it will

 

[mindless]

I have a 93 Mint Blaster with a 6 mil stroker on a set of racing jugs hitting 200PSI. I need to run half Race fuel and half Premium. I'm looking at adding a thick base gasket to raise the jugs and lower compression since I don't race and this blaster is UN-necessary powerful. What size thickness base gasket should I be running to attain PUMP gas compression? 1.00 maybe 1.25 or larger ?

Maybe my English is bad, but what does "UN-necessary powerful" mean?

 

[tc14]

So if I add .50 of height but its ported .75 lower then stock it will change no doubt but what would that matter if I dont race ? Little lower response time ?

 

[Scraggly]

we need more specs and info on the engine to really help you.

 

[tc14]

mean I don't race and it wants to pull away from me if I touch the throttle. I don't need a racing Blaster for my leisurely riding.

 

[wanderer1]

PM me your number and I'll put you in touch with a guy in Michigan that will probably help ya out. I agree that the dome cc should be altered rather than changing a base gasket. At 200psi with any timing on a blaster I'd be running straight 110, but thats just me.

 

[kieran79]

I run 200psi in my blaster and only run pump gas 98 octane but never wot

 

[ProSouth]

110 on 200psi for sure. Or AV fuel. Lowering it down to pump gas won't change much. I'm confused on your terminology of it wants to run away from you.

 

[Waveblaster785]

Sounds like you should probably just trade me for a stock 701.

Domes are a faster and easier way to address the issue and you don't have to pull the jugs. Honestly you're probably not far off 50/50 territory but hard to tell without knowing he port timings.


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[tc14]

Ok thanks for the input and Waveblaster785 I will be looking in to getting a stock blaster soon. Cheers

 

[Freakrider]

Have a engine builder cut your domes for MSV (maximum squish velocity) along with taking out between 1 to 2 cc's so you get down to 180-185 cranking psi.

 

[Aaron Jaworowski]

I wouldn't mess with the base gasket I assed a copper base gasket to one of my skis and it put my timing off and I lost a lot of power. I think domes are your best bet