Tri-z compression advice needed.

[clutchcargo]

Hi guys, I need advice and opinions on an engine that I bought. It appears to have been built well, but it has 220lbs. of compression. So I'm assuming it has a shaved head. Is it safe to run, if I use race gas? Or should I do something to lower the compression? It does have the "Hot Rods" connecting rod in it also.

[Bryan Raffa]

just to be safe,, I would run Race gas in that or mix race gas with 98 oct at 50/50(50% race gas-50% 98 oct) should be fine..dont mix it with anything less than 98 tho..and then you can probley ween it off the race gas as the compression drops over time

[clutchcargo]

Should I run a hotter plug also? And, can I get away with using octane boost if race gas isn't available?

[J.D.]

Octane boost is a joke. There is some stuff called Octane Supreme 130, it has real lead in it and you mix in different parts to get a 2-16 REAL point boost on your fuel. Usually with a higher performance engine you want to run a colder plug.

[Tri-Z 250]

I'm not to sure how booster mixes with premix oils (check it out call manufacture). You can get VP fuels via UPS worldwide shipped to your door.

[Bryan Raffa]

you can also get Klotz fuel shipped too your door also..

http://www.klotzlube.com/

[1BFC]

Wow that Klotz fuel is extremely expensive. 5 gal for $64.00? that's over $12.00/gallon.

You should be able to pick up 100LL at a local airport (small airports) for $4.50 to $5.50 gallon.

100LL is rated at 100 to 130 octane depending on the lean/rich conditions the fuel is used in.

edit: I'll say, however, that purpose blended racing fuels like VP and Klotz stuff is probably better if you are racing. However, for recreational use I don't think the cost difference is worth the 1-3% hp improvement.