Thomas800
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We have had problems in the past with pushing the cylinder walls around under big boost (only when over 35). To alleviate this problem we bought cylinder liner blanks from Darton and I machined up a set of stepped liners, to tie the deck of the block together.
Jim Wanner of Jim’s Engines Ltd. in Prince George B.C. Canada, and his machinists Gerald and Bob did the rest of the installation. That included cutting the side flats on the liners, cutting them to length, boring the steps in the block to accept the new liners, setting and boring them, and finally decking the head surface. I did the head water passages here. My hats off to them for their top drawer machine work
We have a few passes on the first block now and so far the leakdown is 1 ½ to 2 %. We hope to run it again next weekend in Mission B.C. if the weather holds.
The first one was very costly, finalizing the dimensions and the installation procedure. Now that the procedure is worked out and all the dimensions are set, we may have the liners pre built to cut some of the overhead. We will be having a couple more blocks done for ourselves, but if any one else is interested in getting one, they can contact Jim @ 250-563-3320.
Thanks Tom
Jim Wanner of Jim’s Engines Ltd. in Prince George B.C. Canada, and his machinists Gerald and Bob did the rest of the installation. That included cutting the side flats on the liners, cutting them to length, boring the steps in the block to accept the new liners, setting and boring them, and finally decking the head surface. I did the head water passages here. My hats off to them for their top drawer machine work
We have a few passes on the first block now and so far the leakdown is 1 ½ to 2 %. We hope to run it again next weekend in Mission B.C. if the weather holds.
The first one was very costly, finalizing the dimensions and the installation procedure. Now that the procedure is worked out and all the dimensions are set, we may have the liners pre built to cut some of the overhead. We will be having a couple more blocks done for ourselves, but if any one else is interested in getting one, they can contact Jim @ 250-563-3320.
Thanks Tom
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Rx1M5
VIP Member
That looks serious. Just curious what kind of power does this engine make at 35 lbs boost and over?
Rx1m5
Rx1m5
Cool post Thomas! You don’t see to many other record setters posting pics of there internals.
Are you run a ice cooler on that monkey? Good luck in Mission, that track can have near perfect air this time of year.
Are you run a ice cooler on that monkey? Good luck in Mission, that track can have near perfect air this time of year.
Thomas800
Pro
- Joined
- Dec 17, 2004
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- Website
- www.snowmobiledragsters.com
The air is good, but we had serious problems with traction last year. The humidity can be quite high, being right on the river. If it stays overcast like last fall, the track doesn't come around till later in the day. On our first two passes there the car spun the tires right through the top end, kinda like a fuel car. I think it only went like an 8.30 something and Rusty was off the throttle 3 times. We have a better clutch to work with this year, but we don't plan on turning the wick right up. You sure can make power with that mineshaft air.
As for what kind of power, I would be guessing if I said. Hopefully we will have time to do some dynoing this winter. We are finally close on the fuel curve, but we are more interested in reliability than all out power (something new for us). We can probably make around 45 to 47 pounds with the current header/turbo, but we have to make sure that the fuel and ignition curves are right. At those boost levels it doesn't take long to make a bunch of junk if things aren't right (unfortunatly talking from experience). The proper way would have been to dyno for a day or two before putting it in the car.
Thanks
As for what kind of power, I would be guessing if I said. Hopefully we will have time to do some dynoing this winter. We are finally close on the fuel curve, but we are more interested in reliability than all out power (something new for us). We can probably make around 45 to 47 pounds with the current header/turbo, but we have to make sure that the fuel and ignition curves are right. At those boost levels it doesn't take long to make a bunch of junk if things aren't right (unfortunatly talking from experience). The proper way would have been to dyno for a day or two before putting it in the car.
Thanks
- Joined
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Simons CPR offers what they call a Superman block for big boost. Not sure how much boost you can throw at it, but I know they also offer one...BBY
Jeff never gave me an exact # for how much boost it can run. It was pretty clear though from our conversation that he has found and addressed a number of weak points in this block with his Superman kit.
Nice work Thomas!
Nice work Thomas!
