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Post by Heath Daniel on Mar 13, 2009 22:41:54 GMT -5
Had a friend forward me the nitrous plate system tune-up that he got from Wilson Manifolds. Thought ya'll might want to check it out. It's awesome that they sent it in actually jet sizes and not just numbers so it can be crossed with any brand system. Thanks "friend".  Nitrous pro flo e85 plate tune up N20 jet HP Fuel Jet Fuel PSI Timing retard 0.050 100 0.052 10 3 0.056 125 0.059 10 3.75 0.065 150 0.067 10 4.5 0.073 175 0.076 10 5.25 0.078 200 0.085 10 6 0.082 225 0.120 10 6.75 Oh yea and by the way I recently had a rep. from a BIG time race fuel maker that doesn't make E85 tell me that nitrous and E85 work GREAT together.  I don't know why the chart is all bunched up, that's not the way it's typed in but the fuel pressure for all settings is 10 psi and the last set of numbers is the timing retard. |
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Post by blazingfast on Mar 14, 2009 9:20:48 GMT -5
Does anyone know how much more fuel jet to add if you drop the fuel pressure to 6.5 or 7?
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Post by Thad Cook on Mar 14, 2009 16:44:06 GMT -5
Heath, the best I can tell this is the difference.... they are taking timing away straight off the bat. Normally with a 100 shot you don't touch the timing. They are pulling out 3 degrees for a 100 shot. The fuel jet numbers seem to be small but they are useing more pressure than we usually run. For example, Our wagon had 73/82 jets in it with the fuel flowed at 6 p.s.i.. When I put it on E85 I did the math and used a 30% setting. According to that it would be a .100 jet, so I put in a 102 and left the psi the same. The car did fine but I'm still a little cautious with the tune-up. My mustang is the one that I'm chasing the gremlins with. And I think it is all in what me and you talked about in my fuel delivery and trying to supply both systems with one pump set for the carb. Also on regular race gas they have you take 2 degrees of timing out for every 50hp after you pass the 125 mark.
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Post by Heath Daniel on Mar 16, 2009 9:45:13 GMT -5
I think your right about the part about what you and I talked about on the Mustang being the problem. This chart is interesting because it's the first actual tuning recommendation I have seen from a company that sells nitrous kits. As you can see we are close on what we had figured and too you can use a little bigger fuel jet and not quite as much pressure and still come up with pretty much the same thing. What I thought was interesting is the timing. You know what kind of power we found when we started backing the timing off on Kirk Thompson's car on motor. I think you have to throw the gas/nitrous timing tune-up out the window when you shoot with E85 and back it off about twice as much. What do you think?
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Post by mickey on Mar 16, 2009 18:43:30 GMT -5
You think 3* is a lot of timing pulled on a 100 shot.?
The same tune up on race gas is 5-6*on a 100 shot....
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Post by Heath Daniel on Mar 16, 2009 21:02:33 GMT -5
Hey Mickey, welcome to the board. I got your main body and bowls today. I printed off a picture of your beautiful car just in case you decide to powder coat the bowls to match the car. Just let me know. Looks like you are going to be our resident n2o E85 dude so keeps us posted on how it goes man.
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Post by adamsvega on Mar 17, 2009 18:51:44 GMT -5
can you post up the jets and psi you used . my system runs on 6.5 and is never more than 70 h/p and as low as 30 ....... custom nx stuff for index racing dont ask ...can handle 250 with duel solnoids but we just use duel feeds at that level .  |
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