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Silber Pro running on only 1 cylinder..HELP

I'm not looking for dinner, thats just a matter of saying around here.
I just find it odd that so many people want to run these things on straight pump gas, or minimum race/av.
For testing purposes and first time rides, they should have 100% av in the tank, tune the sled to your desired boost, and then ween it off always correcting the the high side of octane. Even at 5-6# and 10k elev you will need a couple gallons of Av just for safety EVERY RIDE.
I don't want to get into the whole fuel issue again, I'm just saying that I see alot of guys on here having problems with det, and when you ask them how much octane they are running they say 50% at 10# or 12#, they've been given BAD advice.


I agree . Seems pretty silly to take chances for the price of the fuel. Im just running staight avgas or race gas Period! I say run the fuel that allows you to get what you paid for . all of it.

But then there are people with boosted sleds who are to cheap to pay for the membership to see page 2 of this forum. This is confusing for me.:face-icon-small-con
 
My riding buddy has a very high quality tester for gasoline used for aviation, and we take fuel samples from all the local 91 selling gas stations in the area as well as av gas samples and race fuel....and i'll tell ya this from our own tests..91 octane pump gas is CRAP period, and varies amost 20 points in specfic gravity from sample to sample, and that my friends is $hit. so on 1 day you get true 91 and your sled runs ok, the next ride you get 91(thats really 85ish) and you blow the pistons out and you wondering what happened.

I have seen 91 non oxy pump register .38 specific gravity on our tester while our control sample pulled a .76 (vp c14) and local 100ll at .68

Now do you still want to trust pump gas in your 20,000.00 turbo toy??? Do your self a huge favor and buy good fuel.
 
I'm not looking for dinner, thats just a matter of saying around here.
I just find it odd that so many people want to run these things on straight pump gas, or minimum race/av.
For testing purposes and first time rides, they should have 100% av in the tank, tune the sled to your desired boost, and then ween it off always correcting the the high side of octane. Even at 5-6# and 10k elev you will need a couple gallons of Av just for safety EVERY RIDE.
I don't want to get into the whole fuel issue again, I'm just saying that I see alot of guys on here having problems with det, and when you ask them how much octane they are running they say 50% at 10# or 12#, they've been given BAD advice.

What are your thoughts on running 10-11# running a 50/50 of premium/race fuel for a good 100 octane at 6000 feet that is what I plan to run. Right now I have straight 110 to tune it in.
 
IMHO any boost at all...100% av gas...more boost 100 % C16

Look fact is this 100ll at 5.50 a gallon is CHEAP for what you get, sorry if thats a hard line for some but 20k in a sled you run good fuel....:face-icon-small-win

I don't mind the cost of AV gas, its more of the convienience of being able to have a drum of race fuel at my house then having to carry jugs down to the local airport.

I pay about $8 a gallon for race plus whatever the premium is so I think the 100LL would be about the same. I'll have to see if my airport allows it.
 
Went to the mountains a few weekend ago and my AV fuel I brought was .50 less a gal than pump prem. The best thing about AV gas is it is stable, have had VP go skunky on me before :face-icon-small-fro
 
I don't mind the cost of AV gas, its more of the convienience of being able to have a drum of race fuel at my house then having to carry jugs down to the local airport.

I pay about $8 a gallon for race plus whatever the premium is so I think the 100LL would be about the same. I'll have to see if my airport allows it.

thats understood, now what race fuel are you buying? its perfectly fine to mix fuels to obtain the proper octane needed....perhaps I was not as clear as i should have been, mixing true 110 octane or better with 91 pump is very very different from mixing 100ll with 91 for many reasons. In fact some blends with race gas I like better than av gas.
Just that you have to assume that the 91 you are buying is at the lower end of the scale when you figure your blend, that way if you get a sub-par load of 91 you are still in the proper octane range. Hope that makes better sense
 
thats understood, now what race fuel are you buying? its perfectly fine to mix fuels to obtain the proper octane needed....perhaps I was not as clear as i should have been, mixing true 110 octane or better with 91 pump is very very different from mixing 100ll with 91 for many reasons. In fact some blends with race gas I like better than av gas.
Just that you have to assume that the 91 you are buying is at the lower end of the scale when you figure your blend, that way if you get a sub-par load of 91 you are still in the proper octane range. Hope that makes better sense

I run a standard sunoco 110 is what they have around here. Usually I am more than 50/50 mix, at least I always was on my apex. Usually would always put a 5 of race and would take 3-4 gallons of premium. The 100 octane was normally my minimum I would go, then every 3-4 tanks I would put another 10 on race so it stayed above that 50/50 mix.

Thanks for the info.
 
Fuel

I just filled up a 30 gal drum at the airport for 4.75 a gallon and I would guess that regular gas on the mountain is over 4.00. At that price I might as well run straight AV gas at any boost level.
 
What are your thoughts on running 10-11# running a 50/50 of premium/race fuel for a good 100 octane at 6000 feet that is what I plan to run. Right now I have straight 110 to tune it in.

My thoughts are start with your straight 110 and ween it off. If you det at 50/50 then turn the boost down until it doesn't. Next ride add more race. 50/50 110 and 91 non eth fuel won't be 100 octane. The factors are age and probably ethanol with the 91 octane, when you blend the 110 and 91 your octane is always going to favor the lower number.
There isn't a set value of what the perfect blend is, or what the perfect boost is, each machine is going to have a sweet spot for where it runs best boost/fuel.
 
has anyone had this issue
i have to have iridum plugs gapped down to 10 thou for the sled to run good..
now here is where i ahev a problem it wont idle very well or at all.
and on the trail it loads up and getsa boggy.
so do i have bad ignition coils?
also it gets worse the more elevation i go up.??? and when shes in the boost oh ya pulls good..so at 20 thou or even 12 sled runs bad with boost and without.. but idles good..
tps is spot on
 
has anyone had this issue
i have to have iridum plugs gapped down to 10 thou for the sled to run good..
now here is where i ahev a problem it wont idle very well or at all.
and on the trail it loads up and getsa boggy.
so do i have bad ignition coils?
also it gets worse the more elevation i go up.??? and when shes in the boost oh ya pulls good..so at 20 thou or even 12 sled runs bad with boost and without.. but idles good..
tps is spot on
What elevation and how much race fuel? I ask because I had this similar problem on my dragon and figure it was to much octane I was running straight avgas at 9,000 feet. When I left the parking lot at 6,000 it was fine but when I got up to where we ride I was having similar issues. Then I toned fuel mix back to a 50/50 mixed and solved the problem. Not sure if this helps. Just a thought.
 
i am runnig 91 non ethonal.. mixxed with torco fuel accelorator to a 102 octane mix
we start at the trucks around 2800ft and make our way up tp 4500-5500ft
now to make this more of a pain in my a$$ my buddy and i have same sleds same milage same clutching turboed same time same fuel and his runs unbelivable..
 
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