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Post by kronnikracing on Jan 12, 2009 11:23:20 GMT -6
Well another year has come and gone for eagle river, again this year i drug the nitro 2 up there for another year of head scratching failure. However we took the 76 250 nitro up there after pulling it from the pines and restoring the sled in 3 weeks and making it race ready, it qualified for the finals but bent the bulkhead in turn 1 of lap 2(due to extremely rough track conditions) could no longer turn very well after that, but oh well at least that sled shows promise. Do you guys think after 4 years of that nitro 2 not performing, its time to put it on a shelf and put all the go fast parts on another sled. First 2 years it wouldnt steer, last year for some reason 2 minutes before the race i lost 1 cylinder and well you know the rest, this year it seemed stronger, but 3/4 down the straights it seemed to lose spark on one cyl and cut out, no it wasnt lean spark plugs looked good. what do you guys think. as of right now im likin the green drippers on the ovals, handled nice till bent bulkhead and stuck with a couple 250 Z's.
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Post by Ruppsforever on Jan 12, 2009 17:57:41 GMT -6
You know what I would do !!! LOL
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Post by kronnikracing on Jan 12, 2009 18:07:30 GMT -6
Yeah your right i know what you would do, stick a xenoah in it and make a real sleeper out of her. ;D
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Post by nitronate on Jan 12, 2009 18:19:30 GMT -6
Stick with the red. They were ahead of their time back then and they'll be ahead now if you persist. Nate
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Post by bankRUPPt on Jan 12, 2009 18:52:48 GMT -6
You know what I would do !!! LOL Get a Z??? ;D
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Post by wigman25 on Jan 12, 2009 19:20:19 GMT -6
I say slap a couple of gussets in the front end of that 250 and go out there and show 'em how these things run when you get them set up right!! ;D Wig
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Post by Ruppsforever on Jan 12, 2009 19:29:33 GMT -6
You know what I would do !!! LOL Get a Z??? ;D Funny Eddy!!! Very Funny !!! I wouldn't mind having a 250 or 440 Z though !!
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Post by romanowski on Jan 12, 2009 19:46:13 GMT -6
Hey Luke, How bout dropping the kohler powered rupp over at my place and I will work some trail twister majik all over that baby, Guaranteed to haul the mail when you get it back. Even though this is my class, I want to see you suceed. Paul
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Post by kronnikracing on Jan 12, 2009 21:47:10 GMT -6
Thanks Paul for the offer, but i am not sure if its a tuning issue, i think it might be something with the electrical, it may need some of that high tech nippen denso or hewtech stuff bolted on, but dont really have a clue about the denso stuff to know where to begin, i dont know this weekend hopefully we'll get em out on the test track and see what we can get accomplished, where is the next fun oval race at?
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Post by romanowski on Jan 12, 2009 22:31:12 GMT -6
Luke, trust me you will need dialed in real well if you want to compete at Eagle River, I use the nippondenso ign just because it is reliable, it is not anything hi-tech. My next race is Waconia, then ovals at Mole Lake. Give me a call if you want to make nitro II fly.
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Post by onlyhere4themoney on Jan 13, 2009 5:05:43 GMT -6
Luke toss out the ski spreaders get 75 F/A bulkhead convert it to a jackshaft and put your 76 nitro tunnel on it. Josh will know what to do from there.
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Post by kronnikracing on Jan 13, 2009 9:10:24 GMT -6
snosnake, if i put a fa bulkhead under it and the 76 tunnel, how would i get the panels and hood to fit, fa panels wont work with a liquid hood will they? too wide. we thought of that this last sunday when we were brain storming. Plus are you talking about the 250 or the nitro 2, the 250 is an easy fix im not concerned about that at all, that sled kicks azz just had it geared to tall this last weekend, the nitro 2 is the one im concerned with, we are sick of wasting our time with it, seems like everytime you turn your head the damn thing acts differently, last winter we were messing with clutch weights we'd go from extreme to extreme on it to find a difference, and it never changed rpms would maybe move a couple hundred at most, we know the tach is off, but it is consistently off, we checked it with our dyno, off 1000rpm.
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Post by romanowski on Jan 13, 2009 9:18:12 GMT -6
Hey snosnake, that would be the last thing I would do.
Luke, I'll make a standing offer, if you bring that thing over to my place this summer and let me dial it in, it will go back to you reliable, fast, handling awesome and you will be saying that is the best move I ever made.
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Post by romanowski on Jan 14, 2009 12:35:06 GMT -6
Luke, watched the dvd's of my races last night, over and over and over. I am rally satisified on the performance and handling of both my sleds, the wheelie in the final of 440 fan is the reason I was 3rd, my screw up, still very happy with that position when I was 7th coming out of turn 2 on the 1st lap. trail twisters took 1,2,3 and 5th place. Your nitro II has the potential, it just needs, a hex clutch and some more trail twister, sno-twister stuff grafted to it.
My 250 s/t will run with Niznik, he is a better racer than I, that guy is fun to watch and learn from. Jet your 250 compression up and you should do better.
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Post by kronnikracing on Jan 14, 2009 16:16:38 GMT -6
Yeah Paul we are trying to figure out how to get the comp up we have a couple of piston ideas, those were new pistons and rings in it, comp never got above 108 on either cyl, according to some people rupp did have oversize pistons for the 250 but no one has or can get rings for the damn things, so i think for this weekend we are gonna get it on the timing system, fine tune the carbs and clutching, and see what we can get the time down to in 450',shaving the head a hair would pssibly work for the rest of this season, that way we have all of next summer to find a new way to get comp up where it should be, another quick thing, what do you think the 250's are geared for at a track such as eagle river, we were geared tall hoping that it would work for speed but i dont think it had the power to do so, last night we dropped it a tooth, we are now at 35 on the bottom and 18 on the top, should be alot quicker.
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Post by wigman25 on Jan 14, 2009 17:05:51 GMT -6
If you are going to shave the head anyway, you can try the old trick of doubling up on the paper base gaskets to raise the ports and cut the head down .020 to compensate. If you want to raise the C.R. as well, you can cut it a little more but you'd have to measure it out. It works wonders on the 440's, we used to do it back in the day and it gave them more midrange and high end grunt. Killed the low end, tho, so we had to clutch them high out of the hole. I don't know if that is what you need for the ovals, it was good for the lakes. The liquids can't get a very good compression read because of the high exhaust ports and you can't turn it over fast enough by hand to get the correct reading. Wig
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Post by onlyhere4themoney on Jan 14, 2009 17:58:42 GMT -6
Hey snosnake, that would be the last thing I would do. Luke, I'll make a standing offer, if you bring that thing over to my place this summer and let me dial it in, it will go back to you reliable, fast, handling awesome and you will be saying that is the best move I ever made. Why Paul?
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Post by onlyhere4themoney on Jan 14, 2009 18:09:39 GMT -6
Luke the F/A and 76 magnum use the same bulkhead. I am giving you this idea because you bent a ski spreader and lost some places because of it. There gets to be a lot of pressure on the spindle when you use ski spreaders on a Rupp. Next time you might break a spindle wipe out and get hurt with the ski spreaders on.
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Post by romanowski on Jan 14, 2009 20:32:09 GMT -6
I'm geared 13/34 with 8 tooth 2.52 pitch drivers, I am shifted all the out at about 400 feet with the 250 merc. Cut your heads to get the squish about .040 your compression should come up. I run 150 -160 comp. You will need 7.50 second 500 foot times to say your 250 kicks azz.................. I'll bet your not even close now.
Please let me, tune up your kohler toilet, I will have it flushing all your xenoah turds down the drain.
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Post by Ruppsforever on Jan 14, 2009 21:37:25 GMT -6
Paul , thats great info. But one thing you have to realize is this: We put this whole sled together in 3 weeks with maybe 3 hours on the pond running it around on a little oval track with no stopwatch or timer. Paul I gaurantee we're not even close to 7.5 either. But to throw this thing together in 3 weeks and make it to the final race was a very good feeling. I mean Luke hung right with that 250 Z in the heat race and could of easily taken 4th place with a little more tuning on the sled. And in the final you can easily see that he had serious problems after lap 1. So to call it a Xenoah Turd doesn't really apply here. This little Xenoah got him to the finals with very low compression. And if it would of been tuned a bit better and without the bent ski spreader he would of had a top 5 with it.
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