Vmax xtc 1997
Member
Hi
does an opticool gasket installed up side down/ wrong side..... wrong way.... but still torqued to spec and proper pattern followed, caused a coolant leak in the cylinders.
I have pics in the build log if need be!
Thank you
does an opticool gasket installed up side down/ wrong side..... wrong way.... but still torqued to spec and proper pattern followed, caused a coolant leak in the cylinders.
I have pics in the build log if need be!
Thank you
Vmax xtc 1997
Member
You sure you have a leak ?
Guessing you may have gotten a lot of coolant in the bottom of the case when you removed the head?
Now maybe it’s pushing it out the exhaust.
Guessing you may have gotten a lot of coolant in the bottom of the case when you removed the head?
Now maybe it’s pushing it out the exhaust.
Vmax xtc 1997
Member
Well I purchased it with the middle cylinder blown. I wanted to learn how to rebuild a engine. Found out that a bearing on the crank was toasted. So got the crank rebuild, rebuilt the water pump since I was in there. I did cleaned the base clean.
I initially noticed that grey smudge in the middle plug and clutch side one after several remove and put back because I was purring a bit of mix gas in there for my initial start.
if it was coming from the base, would it not be equal in all cylinders?
I have install an opticool gasket, was not sure which side goes up.... could that cause a leak? but I respected the tork spec as well as the pattern....
The head as a tiny pit in it but the guys at the yamaha dealer here told me that it should not be a concerned, they have seen much worse.
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jarin12ga
New member
That pin holes defiantly not the cause of the coolant leak.The Walls are almost a 1/4 inch thick between the coolant side of the wall to the other.
Vmax xtc 1997
Member
I will be doing another attempt at starting it tomorrow. I have 2 manuals and 2 different torq spec.
I was torq at 17 and the other manual said 20.... so I re-torqed it tonight and installed another header since I found that the one on it was cracked/leaking....
I was torq at 17 and the other manual said 20.... so I re-torqed it tonight and installed another header since I found that the one on it was cracked/leaking....
Vmax xtc 1997
Member
UPDATE
tried to start with the rope and was not able to pull as if something was blocking.... tried with the battery (dead) but the battery was able to make a turn once, then I begun slowly to be able to make it turn with the rope. Took a few time and started to run but very poor and stop 1-2 second after.
Removed the plug and the same liquid was still on the top of the cylinder.
I opened the coolant cap and the level was extremely low. Was full last week. I suspect the head/combustion chamber was full which was making it hard to pull the rope and now the base is probably full of coolant????
back to the operation table
tried to start with the rope and was not able to pull as if something was blocking.... tried with the battery (dead) but the battery was able to make a turn once, then I begun slowly to be able to make it turn with the rope. Took a few time and started to run but very poor and stop 1-2 second after.
Removed the plug and the same liquid was still on the top of the cylinder.
I opened the coolant cap and the level was extremely low. Was full last week. I suspect the head/combustion chamber was full which was making it hard to pull the rope and now the base is probably full of coolant????
back to the operation table
While unlikely, I would not rule out porosity at the location you highlighted. It will cost you nothing to put the head on a level surface and fill the coolant passage and see if you get any liquid seeping through the pit. Or put the straw from a can of carb clean into the pit and look for spray in the coolant passage. The pit looks deeper than typical pitting from the shrapnel created during a burn down. It's a cast part, it can happen.
Vmax xtc 1997
Member
But, don't shoot yourself in the eye with the carb cleaner !
(Almost 100% chance..lol)
(Almost 100% chance..lol)
Vmax xtc 1997
Member
Safety glass!!! I experienced paint tiner once and felt like my eye was burning for almost half hour....
Vmax xtc 1997
Member
So I removed the head yesterday and it looked like that;
In the bucket is coolant that was in the pipe, approx 3/4 of a pint. The head was torqued as per specs in proper order.
When I look at the water rails in the cylinders they are all full off coolant and equal in all three.
Should I be concerned about coolant going down in the bottom, crankshaft area?
Thank you
In the bucket is coolant that was in the pipe, approx 3/4 of a pint. The head was torqued as per specs in proper order.
When I look at the water rails in the cylinders they are all full off coolant and equal in all three.
Should I be concerned about coolant going down in the bottom, crankshaft area?
Thank you
Mac
Member
Inspect that head closely. It may be warped and they are cheap to replace. I would drain the coolant prior to before taking the head off. Go slow when
pulling off the head off next time and try to isolate which cylinder is the leaker.
No concern with coolant down below as long as its not long term.
Below are the specs. I would torque a few extra pounds on that head and try again.
pulling off the head off next time and try to isolate which cylinder is the leaker.
No concern with coolant down below as long as its not long term.
Below are the specs. I would torque a few extra pounds on that head and try again.
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Vmax xtc 1997
Member
I use a lot of 1 layer head gaskets, so I find myself over torqueing head bolts all the time just for my own peace of mind.
If it asks for 27, I may do 35, maybe more, just depends how ornery I'm feeling that day. Lol
You can kind of "feel" when its enough, IMO.
If it asks for 27, I may do 35, maybe more, just depends how ornery I'm feeling that day. Lol
You can kind of "feel" when its enough, IMO.
Vmax xtc 1997
Member
I was thinking of putting a original gasket on instead of the opticool.... could the greater restriction caused by the smaller holes in the opticool forces more the coolant to leak or it should not be a concerned if torqued more?
Mac
Member
I doubt the opticool had anything to do with your troubles. I would suggest a good coating of copper spray. It helps to seal as well as helps to preserve that gasket for future disassembly.
Vmax xtc 1997
Member
Will go for copper. Did not thought about that.
Was putting it back together half hour ago with the torq wrench and one bolt stripped.... My torq would *click* on all bolts except 2... and one of them broke.
Whats odd about it is that when I attempted to drill into the broken part in the cylinder to remove it, it was completely loose. I was able to remove it just with my finger tips....
Was putting it back together half hour ago with the torq wrench and one bolt stripped.... My torq would *click* on all bolts except 2... and one of them broke.
Whats odd about it is that when I attempted to drill into the broken part in the cylinder to remove it, it was completely loose. I was able to remove it just with my finger tips....
The Viper has long bolts, and short bolts that are used in the head.
Did you maybe use one in the wrong spot ?
Easy way to tell which one goes where, is to just drop them all in their holes, they should all be sticking out about the same amount.
Did you maybe use one in the wrong spot ?
Easy way to tell which one goes where, is to just drop them all in their holes, they should all be sticking out about the same amount.
Vmax xtc 1997
Member
Yup did that before beginning! 6 long bolts that goes, 2 per cylinder on each side and the 12 others are the short one that goes in the other holes around....
Dont know if they are a bit ruined because of the heat of all those years, maybe have stretched a bit.... really out of idea.... but I just ordered all brand new.
That sled is making me go crazy!!!!