New Viper question or maybe concern

[Geezer]

Hello all,

My cousin (sidehil) bought a new viper with the turbo kit. We were able to get in a quick ride before the project started to install the turbo. We did about 38 mile that day and wanted to get a feel for the new sled before the turbo went on. Here is the question/concern i have. The sled flat would not rev up past about 8000 rpm when riding. We know all about the break in procedures and the 300 miles before normal throttle, but shouldn't it still rev up past 8000 rpm when riding? Is the computer limiting the engine rpms before proper break in or am I missing something? Could not find anything in owners manual about this. Thanks Terry G (Geezer)

 

[motojunkie101]

It shouldn't be the engine. What altitude are you riding at? The first thing I would look at is the clutch.

 

[up-high]

Probably only revs to 8600. Could be everything is still tight.

 

[yamahajohnson220]

Put the turbo on.

 

[yamahajohnson220]

I'm with moto as far as clutching being the problem. Get that turbo kit put on then test it and report back. You might see the opposite and go from there.

 

[sidehil]

Turbo done and if that sound isn't as good as elk bugling I don't what is)) and who on here poked one!

 

[CHAZWILDMAN]

Mine was low rpm first couple ride's, I only saw like 8200 at the most. After a 125 miles to 150 it started opening up more, then i started turning boost up. I'm around 11lbs boost with 430 miles on now and waiting for boost gauge to know exactly where im at but im over revving on trail and 8400 to 8600 up high. It was deep today and was only around 8100 to 8400 so need that boost gauge so i can finish clutch set up.

 

[thamax]

look and see what you have for clutching and report back. whats your elevation? 500 to 600 rpm low on a brand new sled is normal! 8800-9000 is the where you want to run. 9150 is the rev limiter

 

[Frankenstien]

Mine was low rpm first couple ride's, I only saw like 8200 at the most. After a 125 miles to 150 it started opening up more, then i started turning boost up. I'm around 11lbs boost with 430 miles on now and waiting for boost gauge to know exactly where im at but im over revving on trail and 8400 to 8600 up high. It was deep today and was only around 8100 to 8400 so need that boost gauge so i can finish clutch set up.View attachment 245379

Yamahas promo video, they didn't hold that much snow!

 

[stingray719]

CHAZWILDMAN is correct, the Viper can run almost 1000 rpm lower than it will after it gets 1k miles on it. New to 50 miles it can run really doggy don't worry about it, mine gained 300 rpm in one weekend when new.

I know people that claim they are still adding weight at 3k miles. Our first Viper I set at 50 miles on it and have added 7 grams now at 541miles and will end up adding more. Our second Viper I just set the weights heavy to start with and it is catching up to the weights pretty fast.

 

[Hornet]

Mine was low rpm first couple ride's, I only saw like 8200 at the most. After a 125 miles to 150 it started opening up more, then i started turning boost up. I'm around 11lbs boost with 430 miles on now and waiting for boost gauge to know exactly where im at but im over revving on trail and 8400 to 8600 up high. It was deep today and was only around 8100 to 8400 so need that boost gauge so i can finish clutch set up.View attachment 245379

How can you say you're at around 11lbs. when you have no boost gauge?

 

[Geezer]

Thanks everyone I was hoping it was do to just being a tight new motor. Also the clutching is stock whatever Yamaha set up is from the factory. We run elevations between 3000 and 6000 normally.

thanks Terry G

 

[CHAZWILDMAN]

Yamahas promo video, they didn't hold that much snow!

lol Im actually surrprised in how little is left on sled when we get back to the truck the guy that was on the pro actually noticed more on his tunnel and sled than mine. i could care less i own one of each and ride the piss out all of them no matter how much snow is stuck to them!! as long as there is snow to ride on is all i care about

 

[motojunkie101]

If the clutching is stock at that elevation you should be pulling higher rpm. Check for binding in the clutches or see if the dealer changed something prior to delivery. Stock clutching is setup for 8 to 10k feet without boost.

 

[Deep Powder Guy]

CHAZWILDMAN is correct, the Viper can run almost 1000 rpm lower than it will after it gets 1k miles on it. /QUOTE]

LMAO this is as funny as needing a boost gauge to tune your clutch.

DPG

 

[srxspec]

A quick easy change is to reset the secondary spring from 3-1 stock to 6-1 setting. This might make quite a bit of difference for you.

 

[CHAZWILDMAN]

CHAZWILDMAN is correct, the Viper can run almost 1000 rpm lower than it will after it gets 1k miles on it. /QUOTE]

LMAO this is as funny as needing a boost gauge to tune your clutch.

DPG

you ready to go on that ride yet or are you still breaking in your sled?

 

[Deep Powder Guy]

you ready to go on that ride yet or are you still breaking in your sled?

Come on down when you get your boost gauge & your clutch tuned.

DPG

 

[CHAZWILDMAN]

Come on down when you get your boost gauge & your clutch tuned.

DPG

I'm ready now where am i going

 

[Deep Powder Guy]

Perfect I'm in Wyoming come on down.

DPM