Viper Cranks

V

vyper

New member
Joined
Jan 6, 2007
Messages
6
Location
Michigan
I broke a rod in my viper. Have been looking for an engine or bottom end. The more I check around I am finding other people with the same problem. I talked to a dealer who said the Yamaha rep has been seeing this problem. I have been twisting it to 9100 to 9300 with my Venom Kit. Any body else experiencing this problem or have a fix before I put it back together?
 

Crank Failure

How many miles do you have on it? I currently have 7800 miles and it been piped since day one. I also spin 9300 RPM. I wonder how long it can go before failure. I would like to know the cost if anyone knows of complete rebuild all bearing and rods trued welded ready to go?
 
I had about 7500 miles on it before it broke. It has been running great for 3 years...
 
They are expensive to fix, just went through it myself. Vyper, depending on what you need I may have some of the crank parts if you end up fixing yours.
 
Have you priced a rebuilt crank thru Atelier Adrian Bernard in QC? Buddy did his Doo crank thru them, good results and service. Stay away from the repopped cylinders though.
Personally 9200 rpm is a bit scary. Should rev 8600 or so. Mines got 15K Km so i'm xing my fingers.
 
ephnright said:
Have you priced a rebuilt crank thru Atelier Adrian Bernard in QC? Buddy did his Doo crank thru them, good results and service. Stay away from the repopped cylinders though.
Personally 9200 rpm is a bit scary. Should rev 8600 or so. Mines got 15K Km so i'm xing my fingers.
Click to expand...


Pipes need RPM's to work.
 
ephnright said:
Have you priced a rebuilt crank thru Atelier Adrian Bernard in QC? Buddy did his Doo crank thru them, good results and service. Stay away from the repopped cylinders though.
Personally 9200 rpm is a bit scary. Should rev 8600 or so. Mines got 15K Km so i'm xing my fingers.
Click to expand...

why stay away from their cylinders? they are a oem qualified company. i know they are really good, and have had them do work on my engine. i had 11000 kms on my viper engine and the bearings were begining to get loud so i had them replace all bearings necessary, cost me something like 110 bucks, and i know they replaced atleast4 bearings. i also had them do my cylinder and it is perfect. never had any problems with them. i know its my cylinder i got back because i had porting so i needed the same cylinder back.
 
redsnake3 said:
why stay away from their cylinders? they are a oem qualified company. i know they are really good, and have had them do work on my engine. i had 11000 kms on my viper engine and the bearings were begining to get loud so i had them replace all bearings necessary, cost me something like 110 bucks, and i know they replaced atleast4 bearings. i also had them do my cylinder and it is perfect. never had any problems with them. i know its my cylinder i got back because i had porting so i needed the same cylinder back.
Click to expand...

Glad yours worked out.
Cyls. are Not OEM qual from what I've seen. Have witnessed too many issues with them. I will only buy OEM only. As I said though, I'd buy their cranks.
 
You must log in or register to reply here.


Back
Top