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400+hp on 92 octain pump gas??

A

adrenalator8

Extreme
Joined
Dec 18, 2005
Messages
51
After 3 days of dyno testing with one of Hurracain's Yamaha 1000's
Dave has proved it is possable to make over 400 hp on 92 octain pump gas with the use of meth injection.

Using one of his modified 1000's, running 25Ib's of boost and injecting meth, the out come was 454.1 hp and 289.6FPT.

Further tests are slated to be run in the near future , to further push the limits of this pump gas, meth combination.

At this point we believe 500hp and over 300FPT can be produced with out race fuel.

Cliff Yeatman
Advanced Dyno
 

That's great. Nice works guys! How did the plugs look? Did you get a chance to peek at the pistons and see if there was any detonation?
 
That is awesome!!! How much meth do these things use? I put a kit on my friends cummins and it uses a lot. Wondering if it is worth the money for a mountain sled, or if they are more for the drag racing applications. :Rockon:
 
There has been alot of discussion about the way Meth Injection works to control detonation for boosted snowmobile engines. As a result, I decided to dyno test a boosted 1000cc engine using Sunoco 93 pump gas. With the help of my friend Cliff at Advanced Dyno Service, we tuned the engine first using 116 race gas at 395 hp at 20lb boost. Not bad for the summer heat. We then drained the gas tank and filled it up with the pump gas. With the same engine tuning, we made 10hp less but at a very rich a/f of 10.5 so we turned up the boost. Two things happened,,the a/f leaned out as expected and the HP started to climb. We stopped at about 25 to26 lbs boost and made 456hp but what was really impressive to me was that the torque was up at 286pft.
In summary, it was proven that the meth injection totally eliminates ALL detonation and that there is more power in pump gas than in race gas as a result. The only other thing is that, in my opinion,the cylinder pressure is higher with pump gas thus contributing to the added power. :4STroke:
 
I would be curious how much meth it would consume at those levels. You would probably need a 200-300 mile range before a fill up would be possible (ie back at the truck after a couple days riding and stopping for fuel near the trails/play ground)
 
We made about 32 dyno runs under boost on about a quart and a half of meth. If meth is used on a trail sled,and you ride like a crazy @#$%er, you couldn't use a full 2 quart tank per fill up of gas. It's kinda like the oil injection on a 2 stroke.
 
Hurricane, thanks for the info.Using one of your meth kits on 92 pump gas canadian with low com p pistons 10 /1 and carlo rods with stock head gaskit and the right a/f would it be posible to run 20 psi .I don t have a msd to retard timing .It is very hard to get race gas my way .This is my third engine doing because of detonation.Hope to get it right this time around.Thanks again
 
HURRICANE said:
There are alot of variables that can limit boost,however,if detonation is one of those variables,meth injection ELIMINATES detonation.
Click to expand...

This is really cool stuff. Couple questions.
1. Were you using stright meth or 50/50 h20?
2. Were you pulling any timing?
 
I am going to be the opposition on this subject from a debate stand point and to further educate the public so they have all the tools to make a descision for themselves.

Your accomplishments with Water/meth or Meth injection, although new the the snowmobile world are not new at all, Water/meth injection was around back in World War 2 to prevent detonation on take off or during low elevation operation with high compression and turbocharging.

They also used NOS believe it or NOT.

With the internet we have seen a resurgence of Water/Meth injection in the car world over the last 5-7 years.

Popularity has risen and fallen many times during the last 70 years

Shoot, I had Water injection on my 71 Chevelle back in 1982 made by Edelbrock.

I tune at least 1 car a week that is equipped with Water/Meth injection and I also Sell kits for boosted vehicles that do NOT have intercoolers.

I call it a poor mans intercooler.

There is no debating it works but it is NOT all Peaches and Cream.

There are many kits on the market some of them good and some of them Not so good.

For a limited use vehicle like a Snowmobile, there are some downsides to water/meth or meth injection, Water in itself is corrosive, Methal alcohol is extremely corrosive, and can do a lot of damage to the aluminum, brass, or steel parts it comes in contact with.

So when the Snowmobile or any engine for that matter, sits, everything can turn to powder or RUST, insides of the intercoolers, carburators head ports,valves, piston rings, turbochargers, what ever it comes in contact with.

Some of the pumps that are being used in the kits are just modified chemical spray pumps from the farming industry, You get what you pay for Here So Buyer Beware.

Kits that use brass parts will be subject to corrosion, all metal parts must be stainless.

If you tune for high boost on pump fuel and Water/meth or meth and the pump fails or a nozzle clogs, Good bye Engine.

There are safety devices that can be incorperated in the system to turn the boost down in the event of a pump failure but Not a Nozzle clog.

If Intake air temps are a problem, Install a Bigger intercooler, it is fool proof.

Most of the intercoolers on the market are not efficient much above 10-12 psi for any length of time at full throttle.

It seems like an awfull lot of extra work, maintanence, and the risk is higher than using good old Race Fuel.

I already Know this post is going to upset someone somewhere but I feel strongly the consumer must have all info not just the positive stuff.
 
I love peaches and cream. I have been watching this subject wonderin if this is the way to go. I think the idea is brilliant, but just like nos or any other performance mod, if not maintained and looked over closely, regularly, can cause damage on any motor. If the cost to rebuild is over 6k, then this is a risky mod for the average mountain rider in my opinion. awesome, but still risky..
 
That is awesome!!! How much meth do these things use? I put a kit on my friends cummins and it uses a lot. Wondering if it is worth the money for a mountain sled, or if they are more for the drag racing applications.
Water or Water / Alcohol to Fuel Ratios are between 12.5% to 25%, so when in boost only you will use about 19% W/A to 100% fuel. I built a system for my buggy uses compressed air over W/A for the pump goes to a 12 volt solinoid for each motor and injects in the inlets of the carbs through nozzels. I have had W/A on 4 vehicles now and always use windshield washer solution, on my 11.9 sec street driven stealth I used the washer tank as my reservior with the factory low indicater light.
 
Well I trail rode a turboed nytro last winter with one of Hurricanes meth kits. It was perfect for me hands down with anything in life there can be negatives if not used in its intended perameter. Yes keeping the tank full is important and as for the pumps in the kits Hurricane sells , it is not cheap by any means. Sorry to be bone on this Ted but maybe you should stick to cars not turbo sled stuff. Your brilliant on the keyboard but not at sleds
 
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