new parts

[richracer1]

Originally Posted by bruteboy

what you mean convert them?

You have to convert the specs in the manual from the metric system to our system. For example, .020 of an inch is not the same as .020 of a millimeter. Here's a link to one of many conversion web sites on the net,

http://www.metric-conversion-tables....sionlength.htm

[Adirondack Man]

I run 91, or higher, octane in my Prairie and I have 11.5:1 compression pistons. Just run premium unleaded and you will be fine.

[NMKAWIERIDER]

Originally Posted by bruteboy

you cant put 93 right?

No way...not with that ratio.

[Adirondack Man]

Originally Posted by NMKAWIERIDER

No way...not with that ratio.

I don't mean to disagree, but have been using plain old PREMIUM unleaded in my Prairie for the last year and a half, and I have Wiseco 11.5:1 pistons, ported heads, and custom grind (AMR) cams. Flynt (popular builder on High Lifter), and VForceJohn, told me that I do not need race fuel with 11.5:1 ratio pistons. Anything higher than that ratio and they told me I would need racing fuel, but not with the Wiseco pistons.

[NMKAWIERIDER]

Originally Posted by Adirondack Man

I don't mean to disagree, but have been using plain old PREMIUM unleaded in my Prairie for the last year and a half, and I have Wiseco 11.5:1 pistons, ported heads, and custom grind (AMR) cams. Flynt (popular builder on High Lifter), and VForceJohn, told me that I do not need race fuel with 11.5:1 ratio pistons. Anything higher than that ratio and they told me I would need racing fuel, but not with the Wiseco pistons.

And no preignation? What is the total compression? The 12.0:1 I had in my LT1 had to have none less then 108. Bumping 200lbs with the shaved decks. She was sweet...but only when she was fed right. Hard to believe a .5 difference in compression can allow you to drop all the way down to 94. I guess it would depend on the actual compression.

[BrianMc]

It has alot to do with the cam design also. intake duration and lobe seperation play a big role in the fuel you need to run

[NMKAWIERIDER]

Originally Posted by BrianMc

It has alot to do with the cam design also. intake duration and lobe seperation play a big role in the fuel you need to run

Also plays a big roll in the size of the charge.

[bruteboy]

with the jets whats the best jets to buy and is it a pain to tune?

[NMKAWIERIDER]

Originally Posted by bruteboy

with the jets whats the best jets to buy and is it a pain to tune?

I recommend the Kiehin Jets. EHS racing has them. I get mine from PJs Yes, it can be a pain to tune.
Your Keihin-Mikuni Jets Store-Pjmotorsports.Com

[bruteboy]

have you figured out the best way to tune them or do you just play with it till get it??