1st 16 turbo / Engine Failure

[InRBigness]

This makes no sense to me. You are saying you have now blown up 3 motors? Mine has been running strong for 1400KMs. I have disconnected my EABC so I am restricted to 4.5lbs. Bob Apex is your EABC disconnected or disabled?

 

[Bob Apex]

first motor blown second motor no oïl presure third motor blown all that with only 200km on sled and boost only at 4.5 Yamaha rep said i was good too go every this was good too go

 

[bbquadrider]

Yamaha warranted 97 venture two years after my warranty ran out because the problem with my smart carbs was documented at the dealer.....that's warranty ....good warranty

via big bad phone

 

[cannondale27]

Yamaha warranted 97 venture two years after my warranty ran out because the problem with my smart carbs was documented at the dealer.....that's warranty ....good warranty

via big bad phone

Have seen that type of service many times.

 

[staggs65]

first motor blown second motor no oïl presure third motor blown all that with only 200km on sled and boost only at 4.5 Yamaha rep said i was good too go every this was good too go

Do you have boost and AFR gauges Bob?

 

[mshabaz]

So is this the good motor? Couldn't find the build date.

 

[cannondale27]

That would be the newest motor.

 

[staggs65]

That would be the newest motor.

I thought the new motor didn't have the hump in the cover?

 

[Dirtbikekid1998]

Cannondale27 you should make a sticky that has a pic of old motor and a new motor. Then make it so no one can post on it. I just think that would be easier for the new 2016 guys so they don't have to read 20 pages to see what motor they have.


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[cannondale27]

I thought the new motor didn't have the hump in the cover?

No. Old motor has the rubber plugs in valve cover.

Old Motor

 

[cannondale27]

Cannondale27 you should make a sticky that has a pic of old motor and a new motor. Then make it so no one can post on it. I just think that would be easier for the new 2016 guys so they don't have to read 20 pages to see what motor they have.


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I did make whole thread a sticky but I agree question comes up alot. Will add the pics to first post in sticky and hopefully everyone will read first and last page.

 

[cannondale27]

Here in FAQ First thread
http://www.ty4stroke.com/threads/2016-5-late-build-viper-changes.137648/

 

[Dirtbikekid1998]

Here in FAQ First thread
http://www.ty4stroke.com/threads/2016-5-late-build-viper-changes.137648/

that works! i did not know that existed.

 

[staggs65]

No. Old motor has the rubber plugs in valve cover.

Old Motor
View attachment 114876

I guess I still don't get it. Mshabaz pic looks just like that pic to me? I guess I'm not looking at the right thing

 

[staggs65]

Never mind, I see it now. I thought from the diagram pics posted in earlier threads that the new head was flat without that dip at all. Now I know