Yeah they were running pretty decent boost numbers especially for the time. It's crazy that the quickest thing on the road back then averaged about 200hp throughout it's glory years with 245 being...
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Yeah they were running pretty decent boost numbers especially for the time. It's crazy that the quickest thing on the road back then averaged about 200hp throughout it's glory years with 245 being...
I was gonna say around 80-81 by GM but I didn't know the GNX was the test bed for it. I do know that was right around the time that the RON numbers dropped quite a bit in the fuels available though.
Maybe in Europe but in the 80's Pretty much all BMW's had compression ratios of about 10:1 and lower. (from what I've seen anyways) But even if they were at 11.5:1 back then the premium fuel of the...
What I don't get is that it doesn't matter what form of motorsport it is all these guys that are forever tinkering or working on there stuff, complain so much about having to do a little more...
Yes those are two of the big reasons as to why Alcohol can make more power among other are oxygen is a byproduct of burning alcohol so it get a better burn, and it's also a lot easier to compress an...
I agree with Jeff on the extra cooling effects of the charge, but more so the fuel is only injected at the perfect time not allowing the charge to over-compress and pre-ignite, there's a reason these...
100% pure ethanol is less efficient BTU wise than gas. but at 113 octane lots of guys use as cheap race gas. But it can support more hp than gas everytime. If you were to actually build a motor for...
Well at 22% it's like saying your 200 merc turned into a 150 because you put 10% e-gas in it. So does your 80+mph boat now run only 60-65mph because you changed gas? I think not.
And even those...
For you guys running older stuff or higher compression ratio motors if you live where it's available run E85 as it's about 105 octane. And yeah until the entire fuel system on these older cars is...
Glad to hear I'm not the only one that doesn't really have problems with. I also don't see any loss of power or even mileage. And most people that do so because of altering factors. Kinda like saying...
True. But a lot of the problems that seem to occur are from people that don't do a couple simple things. Or different regions seem to have problems. I know we put about 2500 gallons through our boats...
Yeah but other than both being a form of alcohol Methanol and Ethanol are two completely different things.
You do not need Epoxy. Poly will bond to itself just fine, if you want you can use an etching style Vinyl for the first layer. (Poly doesn't stick to Epoxy) The etching vinyl will actually have the...
No i'm not saying oil slows it down throughout your system although it most likely does atleast minutely in a gravity fed system. What i'm saying as it will prove nothing to help in tuning as it will...
While the results of this test will be interesting i just don't see how it will help you decide on any tuning as it in no way replicates what your motor will be or is doing. To say that it takes...
Per his numbers if the slip isn't off the wall should be low to mid 70's.
I agree with everything you just said, but it would take a whole lotta paint to change that much. Most airbrushed helmets only nave an ounce or two of paint at most then a good clear.
Unless your buying a supercheap plastic helmut and the paint your using actually etches it with it's solvent there should be no way for it to be comprimised. That's like saying that after you build...
Sorry for your loss. My thoughts and prayers are with you and your family..
I agree it's not always the fastest that wins i was just commenting on why the pipes are the way they are. And as far as acceleration i'll stick with one pipe per cyl if possible especially on a...
I'm sure the pipes are that way for a couple of reasons, biggest being if two cyls fired into the pipe together the pipe would have to be quite abit bigger (extra weight) as it is designed around 1...
Not saying this motor doesn't have its problems. But how is 2 carbsand cages any worse than 2 carbsand cages for a 4cyl or 3and 3 for a six?
Did the big Strem run? And if it did how'd it run?
The boat is called a Visa the hull never even made it to production only 2 or three were built and none of them were actually ever truly finished. I believe this one is #1.
What boat is it?
The head pipe should be 12 inches.
I've always been told to the beginning of the diffuser. I'm probably almost around 20'' to fattest part of pipe.
Almost all my sleds tuned pipes measure right about there from the factory. The pipes for my Blizzard are just a bit over 13'' and that motor is 436cc's 95HP and runs at 9000rpm in sstock form.
Tuned pipes should be 12-13 inches from exh port to front side of chamber to work, And most factory tuned pipes do run right around that length.
There's tonnes of guys running Nitrous nowadays in drags and pleasurecraft. There's been a guy working on a twin turbo merc for a few years haven't heard much lately, this motor is from New Zealand
215hp out of a 800cc 4cyl is not the impressive They make that much with a 2cyl 800 mod and race it all day long.
Daves motors run excellant but they will not push a VooDoo no matter how light it is. It won't even mount right with a 9" mid. He's even in your backyard cavi he's in Kanata. Velocity stacks do...
I still think you could get a clutch system to work if set up right check out a sno-x sled there air as much or more than they're on the ground and they don't have too much troouble with all the...
Will if you tried the clutch setup and got to stay dry and tuned properly it shouldn't eat belts that bad, a champ sled spins about 10500rpms clutch engages about 7800rpms with a couple hundred 1" or...
The cases listed above run from 78-85 maybe even a few of the newr with same case.
If you want Rotax stuff there's still lots around all of the 340 440 and 521 bottom halves are the same and cylinders are out there along with heads. You might have a hard time finding many xenoah...
The new Rotax 1000 twin is about 170 hp with over 150ft/lbs of torque on premium gas it has sdi fuel injection with two 52mm dry throttlebodies would make a nasty lake or 1100 engine..
the old 440 rotax's made almost 100hp right out of the factory 25 years ago. And can go from there, they also have the ability too be turned with some serious rpm's for long periods of time. The 440...